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May 29, 2011

Hello.
The facility is equipped with PREM Du 50, 12 volt power supply, factory impulse 2.5 l / imp.
At one point, both PREMs suddenly stopped emitting impulses.
When power is connected, the signal LED in each flow meter initially blinks three to four times in a row, pause, once, and goes out.

The pulses from the flow meters start to go like a jump when the power is turned on, and then stop. The flow meters operate at a basement temperature of 60 degrees, without ventilation. The power supplies are in good order, changed to new ones. When voltage is applied, there is a drawdown from 12.7 to 12.1 approximately, but then there is practically no power consumption - when the power is turned off, without disconnecting the power supply unit from the flow meter, the voltage slowly drops - i.e. flow meters do not consume power in the process for calculation, or work, as is usually the case.

I tried to connect with the Pult program, but I could not connect, and, as far as I remember, a password is needed there to adjust the parameters.
The NP-4 console also does not see them through the interface adapter, but not a fact - as far as the console has tried, none of the flow meters can be seen as a rule, and the remote control program usually communicates with 2-3 out of ten flow meters, also a paradox of some kind

Please tell me, is it possible to repair them yourself, under normal conditions?
Is there a workshop, with equipment, or after replacing the DAC (if it burns out), will you have to program?

The object is budgetary, healthcare, without heating it cannot stand even an hour, there is no reason to send it for repairs as such, if there is no opportunity to repair it, I will buy new ones. I agreed with heating networks for 14 days without readings in the printout, they will recount, i.e. term for repair or replacement - 10-12 days, including delivery and payment

None of the devices in the photo are CONNECTED, and therefore cannot measure anything. They didn't even have food! Thus, the readings that the technician allegedly takes from the flow meter are the purest water Tilia Cordata, "handmade", Filkina Gramota and outright defonation. The applied pressure and temperature sensors, even when turned on, do not provide information storage, and without their readings, the flow meter readings (even if they WERE and accumulated) are only the flow rate of the coolant, and therefore they do not say anything to anyone: if you supply the coolant with temperature +2 degrees, will someone get warmer? Yes, even for unconnected grounding wires on the flow meter, it is already possible to challenge the bills in court, because this fact allows us to talk about the inconsistency of the installation of the flow meter with the technical requirements, which MAY affect its readings (in fact, it practically does not, because water is a very good electrolyte, but the reason for there are disputes).

So, if the sinecure, supposedly removed from the flow meter, allows you to save money, you can continue to close your eyes to the facts. If you think that you are at a loss - immediately picket the entrance to the entrance, so that after the fact you do not end up as camels, call an independent examination and, with its conclusions, go to court! (Or vice versa - first - to the court, then - the examination? Well, I'm not good at mulberries, I haven't graduated from universities and a dark man, a lawyer to help you!)

PS: but in general it is not good to engage in provocations ... Judging by the state of the node, you are just THINKING how to insure yourself against unwinding of the counter by tenants .. .Type, collecting statistics - who and how ...
😉
And in general, in both photos - DIFFERENT nodes from DIFFERENT basements.
😛

ATTENTION.
Diagnostics are included in the cost of repairs.In case of refusal to repair, its cost is 400 rubles.
A duplicate for a lost passport is issued during verification.
PREM power supplies are not repaired (warranty - replaced after diagnostics).
For the retrofitting of PREMs that have come for repair and (or) verification without grounding wires and terminal blocks, an invoice is issued (ground wire - 200 rubles, terminal blocks - 150 rubles).

Welcome to the website of Exergia LLC.

LLC "Exergia" performs all the work on a turnkey basis: inspection, design and approval of design and estimate documentation, equipment, construction, installation and commissioning, organization of collection, processing and transmission of information to the control room, commissioning. The company is a partner and service center of Teplocom holding, and provides warranty and service maintenance of devices manufactured by ZAO NPF Teplokom and NPO Prompribor, as well as supplies of equipment.

The issue of energy saving is highly relevant. This is because in the face of constantly rising prices, as well as the depletion of natural resources, it is necessary to look for energy efficient technologies.

This problem is relevant both for private homeowners and individual entrepreneurs, and for large industrial enterprises. One of the options for reducing energy costs is the installation of heat meters. Such devices help to reduce the cost of paying for heat energy by 20-50%, which makes it possible to recoup the equipment in the shortest possible time.

The heat meter consists of several elements:

• heat calculator;
• temperature transducer;
• pressure transducer;
• flow transducer PREM.

Electromagnetic flow converters or flow meters are used to convert the consumption of thermal energy and the volume of electrically conductive liquids into numerical values, as well as to record and output the results to external devices.

Converters can be used for monitoring and metering in a heat and power complex, at industrial enterprises and in housing and communal services.

1. displays readings on the built-in scoreboard;
2. archives measurements and diagnostic results;
3. outputs measurements and diagnostics results to external devices via unified output signals.

• nominal bore diameter;
• a class that defines the range of conversion of the flow rate;
• the presence of an additional pulse output;
• presence or absence of an indicator;
• output signal nomenclature;
• design feature.

Execution classes: B1, C1 and D.

Based on the experience of using PREM, it can be concluded that these devices are reliable and stable in operation, have a wide measurement range and low pressure losses, thanks to which they confidently won their positions in the market.

The flow meters are powered by 5 W DC power supplies with a nominal voltage of 12 Volts.

The interval between verifications is 4 years, and the countdown must start from the date of manufacture of the device, and not from the moment it was put into operation.

• temperature regime 1-150 degrees Celsius;
• ambient temperature -10 - +50 degrees Celsius;
• pressure does not exceed 1.6 MPa;
• non-aggressiveness of the medium to the material from which the pipe and electrodes are coated from the inside.

Any PREM converter has an independent archive where all changes made to the settings and software are stored. Of course, such a device can be hacked and these parameters can be changed. However, during verification during visual inspection, the inspector will be able to see damage or signs of burglary. And any unauthorized interference is fraught with large fines, and is also the basis for initiating a case under the Criminal Code of the Russian Federation.

To avoid this, you can install special protection. So, for example, by installing a monolithic plastic casing, it is possible to ensure decent safety of the electronic unit of the converter.The monolithic coating prevents penetration to the board connectors, which excludes the possibility of hacking the device without violating its integrity.

For several years now, the Teplochet company has been successfully offering on the market reliable electromagnetic flow meters PREM and other equipment for heat metering at the most attractive prices. We guarantee an individual approach, transparent terms of cooperation, as well as discounts for large orders. Do you want to save on energy consumption? Then welcome to us! By choosing us, you are choosing a reliable and reliable supplier of heat metering devices!

Participant

Joined: 01 Nov 2005
Category: Russian Federation
Online Status: Offline
Publications: 51

Newbie

Joined: 24 May 2006
Category: Russian Federation
Online Status: Offline
Publications: 15

Probably, you need to carefully look through the information.

Electromagnetic flowmeters PREM have electrical output signals:

• pulse number, proportional to the volume of the measured medium;
• digital signal in the RS485 interface standard;
• current in the range of variation (4-20) mA, proportional to the flow rate of the measured medium.

Participant

Joined: 01 Nov 2005
Category: Russian Federation
Online Status: Offline
Publications: 51

Originally posted by m1khey

Probably, you need to carefully look through the information.

Electromagnetic flowmeters PREM have electrical output signals:

• pulse number, proportional to the volume of the measured medium;
• digital signal in the RS485 interface standard;
• current in the range of variation (4-20) mA, proportional to the flow rate of the measured medium.

You probably think that you have provided comprehensive information, according to which the programmer should sit down and write a program module for the controller. What is “digital signal in RS485 interface standard”?

Flowmeters PREM 2 and PREM 3 were discontinued in 2006. They can be replaced with updated PREMs without any problems. What do you need to pay attention to?

Each flow meter has a Qmin and Qmax parameter - the minimum and maximum flow rates that this device can monitor.

In the interval from Qmin to Qmax, the flow rate is calculated with different errors. An error of 2% is considered acceptable. At what costs it will be 2% depends on the metrological accuracy class of the PREM.

The figure shows the intervals of flow rates for which the error is 2%.

To replace PREM 2 or PREM 3 with modern modifications of PREM, it is necessary to compare the flow ranges in which the flow meter error does not exceed the required 2%.

In the figure, the values ​​of flow rates Q are used for devices du32. The intervals of expenses for other ducts are indicated in the instructions:

The correspondence of the classes of produced PREM to the classes of modifications PREM-2 and PREM-3 is given in the table.

M .: Energoatomizdat, 1985, - 328 pages.

Metrology
Temperature measurement
Measurement of pressure
Level measurement
Flow measurement
Analysis of the composition of the media

The collection is compiled in accordance with the program of the course "Heat engineering measurements and devices" in the specialty "Automation of heat and power.

M .: Mashinostroenie, 1990 .-- 208 p., Ill.

Descriptions of instrumentation for measuring temperature are given. Their devices and principles of operation are considered. The technical characteristics of the devices are given and the areas of their application are indicated. The questions of installation, repair and adjustment of devices are stated. The main faults are described.

Repair of PREM (electromagnetic flow transducer)

Repair of KTPTR (set of platinum technical differential thermometers)

Repair of VKT (heat calculator)

Repair and adjustment of measuring instruments

Repair of the VPS flow transducer

Repair of KTSP-N (set of resistance thermometers)

Repair of the Master Flow meter

Repair of the TMK heat calculator

Repair of measuring instruments, measuring instruments

Repair of thermal converters of resistance TPS

Compact heat meter
Pressure sensors PD-R
Pressure switch RD-2 (DEM)
Pressure gauges DM2010 (ECM)
Pressure gauges NMP-52M2
Difman. ДСП-80,160
Temperature relay TAM-T
Kits KTPTR-01-80
Level switch ROS-301
Flow switch FS-1R (FIR)
Flowmeters Univers. RS01
Power supplies BP 24V, 36V
Measuring-regulators TRM-1
Executable MEO mechanisms
Connecting sleeve 55004
Small-sized microprocessor.
four-limit sensor
ZOND-10-DI-1025m

The group of companies (GC) "Prompribor" / "Teplopribor" are instruments and automation for measuring, controlling and regulating the parameters of technological processes (flow metering, heat control, heat metering, etc.). Products of both our own production and partners - leading factories - manufacturers of instrumentation and automation. The shortest terms of production and delivery (much is in stock), delivery and shipment throughout Russia.

Balancing, steel, welded

WITHOUT REGISTRATION OF A DUPLICATE PASSPORT

WITH REGISTRATION OF A DUPLICATE PASSPORT

VERIFICATION OF SPECON CONTROLLERS

1. Repair of flow converters (flow meters) PREM
(the cost is indicated depending on the type of repair, rubles excluding VAT)

Repair of flow meters
PREM-DU

REPAIR OF A CHANNEL WITH A PERFORMANCE

CHANNEL REPAIR WITHOUT REFUELING

BOARD REPAIR WITH REPLACEMENT OF ELECTRONIC COMPONENTS

2. Scheduled repair of PRMT flow meters

3. Repair of VKT calculators (the cost is indicated depending on the type of repair,
rub. without VAT)

BOARD REPAIR WITH REPLACEMENT OF ELECTRONIC COMPONENTS

4. Repair of SPECON controllers

Only devices of our own production are accepted for verification.

When handing over devices for verification, you must have a passport for the device and a letter of guarantee with the payer's details.

Devices delivered without a passport are not covered by the warranty.

A duplicate for a lost passport is issued during verification.

PREM power supplies are not repaired (warranty - replaced after diagnostics).

For the retrofitting of PREMs that have come for repair and (or) verification without grounding wires and terminal blocks, an invoice is issued (ground wire - 200 rubles, terminal blocks - 150 rubles).

This section presents a wholesale price list (cost, availability in stock, production time, etc.) for the following equipment:

1. Calculators of heat (heat calculators) VKT-5, -7 and the amount of gas VKT-2, -3T.
2. Primary converters (sensors) of PREM flow (flow meters).
3. Mounting kits (MK) for PREM flow meters.
4. Ultrasonic heat meters ULTRAHEAD-2WR6, UH-50; flowmeters 2WR7.
5. Controllers SK1, SK2, SK3, SK5, SK6, block BSK-2.
6. Service devices: NP-4A drive, BU-2 control unit, GSM modems, MPD module, CMM cabinet.
7. Pressure sensors and thermal converters.
8. Control valves KZRUS, KZRPS, KST, KZR and hydraulic elevators RG.
9. Ball valves JIP-WW, -FF, KSH, KSHG, VEXVE.
10. Magnetic mesh filters FSMch, FSch and filters-dirt separators FGf (ETON).
11. Services: verification of PREM, PRMT flow meters, VKT calculators, SPEKON controllers.
12. Services: repair of PREM, PRMT flow meters, VKT calculators, SPEKON controllers.

Calibration of heat metering devices

Prices are indicated without taking into account the dismantling of the heat meter

Sensors and tamper. and pressure

Registration of a duplicate passport

Replacing the battery (battery)

When handing over devices for verification, you must have: a passport for the device and a letter of guarantee with the details of the enterprise.

For devices declared for warranty repair, but received without a passport, warranty obligations do not apply.

A duplicate for a lost passport is issued after passing an extraordinary verification. Power supplies are not repairable.

An invoice is issued for the completion of warranty PREMs that have come for repair and (or) verification without grounding wires and plugs.

Cost from 16,000 rubles. VAT included

PREM flow transducer - a device designed to convert the volumetric flow rate and volume of electrically conductive liquids into their readings. PREM serves for registration and presentation of measurement results of volumetric flow rate and volume of electrically conductive liquids in their readings, registration of these readings and presentation of measurement results to external devices (heat calculators, regulators, centralized control devices and other secondary devices).

• A single type (there are no PREM modifications).
• Three performance classes with different dynamic ranges B1, C1, D.
• Various forward and reverse dynamic ranges.
• Additional current output or RS 485 interface.
• The number of pulse outputs have several modes (reversible, taking into account the direction of flow; comparator; measurement error indicator), adjusted when ordering; the default is reverse mode.

• Executions: "sandwich" or flanged.
• An arrow on the body indicates the forward flow direction.
• PREM can be equipped with a built-in indicator for displaying measurement results.

• PREM has hardware protection against unauthorized changes in calibration coefficients.
• Access to changing the tuning parameters of the PREM is limited.
• The impulse weight is unchanged (set by the manufacturer when ordering).

PREM transducers are used to measure the volume flow rate of water and other homogeneous liquids with specific electrical conductivity from 10-3 to 10 cm / m.

The devices are intended for operation when exposed to the following external factors:

• Measured medium, non-aggressive to the material of the inner pipe coating - fluoroplastic Ф4 and electrodes - steel 12Х18Н10Т;
• Temperature of the measured medium in the range from 0 to + 150 ° C;
• Ambient temperatures from -10 to + 50 ° С;
• The working pressure of the measured medium is up to 1.6 MPa.

The converters are powered from a direct current source with a nominal voltage of 12 V and a power of 5 W.

The minimum length of straight pipeline sections before and after the converter is 2 DN.

Nominal diameters (DN) of the transducers and the corresponding maximum flow rates (Q_max) regardless of the direction of flow of the measured medium correspond to the values ​​given in table 1.

PREM is a device, the main purpose of which is the transformation of such indications as "volumetric flow rate of an electrically conductive liquid substance", as well as the "volume of a liquid substance" itself into its value. Also, PREM will allow you to record these readings and send the results obtained to devices that are external to the PREM (in particular, we are talking about heat calculators, CC devices, various regulators and other devices).

In most cases, devices of this type are used at enterprises of the fuel and energy complex or in the industrial sector in the housing sector.

Gauge pressure transducer (4-20) mA for 1.0-4.0 MPa (accuracy class 1.0%). Calibration interval - 2 years.

- lack of modification varieties;

- the presence of three classes (options) of performance (each characterizes its own dynamic range - some models belong to the D-class, others to the C1-class, and the third to the B1 class);

- the difference in the ranges in terms of their dynamics, due to the choice of direction (direct or, conversely, the opposite);

- the presence of one more current output along with the main one (it is also possible to have an interface of the RS 485 modification)

- the variability of modes of such an important component as the number-pulse output (on some models, an indicator is configured that responds to measurement errors, on others - a comparator, and still others work in a reversible mode, taking into account the direction of the flow). The initial setup takes place immediately after ordering the converter.

- an arrow-shaped pointer located on the transducer to indicate the forward direction of the current;

- variability of execution (type of "flange" or the so-called "sandwich")

- an indicator built into the PREM and showing the results of measurement data (acts as an additional option).

- reliable hardware protection that does not allow changes in calibration coefficients by a third party,

- unchanged impulse weight (installation by the manufacturer immediately after ordering the converter),

- the ability to change the converter settings is in limited access.

Heat meters, water meters in Novosibirsk Sale, installation, repair, calibration, design of metering units

Electromagnetic flow converters - PREM are designed to convert the volumetric flow rate and volume of electrically conductive liquids into their readings, register and present the measurement results to external devices.

The converters can be used for control and accounting, including for accounting and settlement operations, volumetric flow rate and volume of liquids at the facilities of the heat and power complex, at industrial enterprises and in the housing and communal services.
Prices for electromagnetic flow meters PREM
FUNCTIONAL POSSIBILITIES:

Constructive designs of PREM (Doc, 56 Kb).

The converters, regardless of their design, have a pulse output. The presence of other output signals is determined when ordering them (the order card is filled in).
MAIN TECHNICAL CHARACTERISTICS:
Performance characteristics

Specific electrical conductivity ……………………………………………… .. from 10-3 to 10 S / m;

Neutrality to materials fluoroplastic F4 and stainless steel 12X18H10T;

Measured medium temperature ………………………………………………… .. from 0 to 150 ° С;

Working pressure of the measured medium, no more …………………………………. 1.6 MPa;
Operating conditions

Ambient air temperature ………………………… from minus 10 to plus 50 ° С;

The degree of protection of the case …………………………………………………… IP55 according to GOST 14254
Electrical parameters

DC supply voltage ……………………………………………………. 12V;

Power consumed from the power source, no more than ………………………………. 5 VA

The nominal diameters (DN) of the transducers and the corresponding maximum flow rates (Qmax), regardless of the flow direction of the measured medium, correspond to the values ​​given in Table 1.

Electromagnetic flow converters PREM are designed to convert the volumetric flow rate and volume of electrically conductive liquids into their readings, register and present the measurement results to external devices (heat calculators, regulators, centralized control devices and other secondary devices).

The converters can be used at the facilities of the heat and power complex, at industrial enterprises and in the housing and communal services.

• single type (no modifications);
• three performance classes with different dynamic ranges B1, C1, D;
• different dynamic ranges in forward and reverse directions;
• number-pulse outputs have several modes (reversible, taking into account the direction of flow; comparator; measurement error indicator), adjusted when ordering; the default is reverse mode.

• executions: "sandwich" and / or flanged;
• the presence of an arrow on the body indicating the forward direction of flow.

Protection against unauthorized interference:

• hardware protection against unauthorized changes in calibration coefficients;
• limited access to changing the tuning parameters;
• the impulse weight is unchanged (set by the manufacturer when ordering).

PREM transducers are used to measure the volume flow rate of water and other homogeneous liquids with specific electrical conductivity from 10-3 to 10 S / m.

PREM converters are designed for operation when exposed to the following external factors:

• measured medium, non-aggressive to the material of the inner pipe coating - fluoroplastic F4 and electrodes - steel 12X18H10T;
• temperature of the measured medium in the range from 0 to + 150 ° C;
• ambient temperature from -10 to + 50 ° С;
• working pressure of the measured medium up to 1.6 MPa.

The converters are powered from a direct current source with a nominal voltage of 12 V and a power of 5 W.

The minimum length of straight pipeline sections before and after the converter is 2 DN.

Nominal diameters (DN) of the transducers and the corresponding maximum flow rates (Q_max) regardless of the direction of flow of the measured medium correspond to the values ​​given in table 1.

1 ELECTROMAGNETIC FLOW CONVERTERS PREM Installation instructions RBYAK IM Edition 4.7 RUSSIA, St. Petersburg, Vyborgskaya nab., 45

2 c.2 Instructions for installing PREM Contents 1 Preparing for installation General requirements Specific features of executions Choosing the installation site General provisions Requirements for the installation site of PREM Requirements for the length of straight sections Consideration of the direction of flow of the measured fluid Requirement for pipelines Installation method Mounting Composition of the mounting kit Composition of the KM mounting kit Recommendations for the manufacture of the mounting kit Installation of the mounting kit on the pipeline Installation of the PREM in the pipeline Installation of the PREM of the "sandwich" version Installation of the PREM of the flanged version Potential equalization Installation of electrical connections Electrical connections Requirements for connecting wires Commissioning and maintenance Appendix A Requirements for the length of straight sections Appendix B Overall simulators PREM Appendix C Types and sizes of gaskets ATTENTION! WHEN PERFORMING ELECTRIC WELDING WORKS AT THE SITE OF OPERATION OF THE INVERTERS, it is NOT ALLOWED: the presence of supply voltage on them; the flow of welding current through their body. ATTENTION! It is forbidden to install the PREM with the electronic unit down! ATTENTION! It is forbidden to connect several PREMs to one power supply unit!

3 PREM Installation instructions p.3 1 Preparation for installation 1.1 General requirements PREM transportation to the installation site should be carried out in the original container. After transporting the PREM at negative temperatures, it is necessary to keep the PREM in the package for at least 8 hours at normal temperature. When unpacking, the PREM is released from the container, the appearance, the safety of the seals and the completeness are checked in accordance with the passport for this device. PREM must not be lifted by the electronic unit, and also installed with the electronic unit down (Fig. 1). Picture 1

4 c.4 Installation instructions PREM 1.2 Features of the versions PREM is produced in the following modifications: "Sandwich" without lining protection; "Sandwich" with lining protection; Flanged design. "Sandwich" without lining protection PREM without protection during transportation has special plates at the ends, tightening the protruding lining. The plates should be removed immediately before installing the PREM in the pipeline or for a period of no more than 30 minutes. It is forbidden to touch the surface of the electrodes with metal objects (including hands). The tightening bolt and plates should be kept for their further use in case of transportation of the PREM for periodic verification or repair. "Sandwich" with lining protection PREM with protection has non-removable casings at the ends to protect the lining. ATTENTION! IT IS FORBIDDEN TO REMOVE THE PROTECTIVE COVER WITH THE PREM! Flanged design In order to prevent damage to the lining, protective washers are used that are installed on the PREM flanges. ATTENTION! IT IS FORBIDDEN TO REMOVE PROTECTIVE WASHERS WITH PREM!

5 PREM Installation instructions p.5 2 Choice of installation site 2.1 General provisions For the normal functioning of the PREM, the following conditions must be met: The PREM must be constantly filled with the liquid to be measured; There must be electrical contact between the PREM and the measured liquid. In case of incomplete filling (airing) of the channel, measurement errors appear. Therefore, during installation, you should adhere to the following recommendations: Do not install the PREM at the highest point of the system channel; Do not install PREM in an open-ended pipeline. Examples of flow meter installation are shown in Fig. 2. Figure 2 Examples of PREM installation If it is impossible to install PREM in the recommended places, installation at the top point of the system is allowed. In this case, it is necessary to provide for the installation of an air valve (air vent) to release air into the atmosphere.The valve should be located above the top of the flow path of the flowmeter, for example, in a bent pipe, pipe expansion, etc. (fig. 3). Figure 3 Installation of PREM at the upper point of the pipeline

7 PREM Installation instructions c Requirement for pipelines Deviation of internal diameters of pipelines in straight sections before and after PREM should not exceed the values ​​given in table. 1. In the event of a discrepancy between the pipeline DN and the DN PREM, it is necessary to install concentric transitions in accordance with GOST at the inlet and outlet of straight sections. Table 1 DU PREM Internal diameter of the pipeline, mm ± 1, ± 1, ± 1, ± 1, ± 2, ± 2, ± 2, ± 3

8 c.8 Installation manual PREM 3 Installation method PREM is installed between two flanges and tightened with pins (bolts), depending on the version (Fig. 5). Figure 5 PREM installation method Flanges, studs, nuts and washers are included in the mounting kit supplied by separate order. ATTENTION! When installed on an inclined or horizontal pipelines, the PREM must be positioned with the electronic unit upwards! A deviation from the vertical axis by no more than 30 is allowed (Fig. 6). x-axis of electrodes Figure 6 Installation on horizontal ducts ATTENTION! It is forbidden to install the PREM with the electronic unit down!

9 PREM Installation instructions p.9 4 Installation Installation of PREM is carried out in the following sequence: assembly of the mounting kit; installation of the mounting kit on the pipeline; installation of PREM on the pipeline; installation of electrical connections. 4.1 Composition of the mounting kit To install the PREM into the pipeline, use the KM mounting kit manufactured by ZAO NPF TEPLOKOM (RBYAK TU), or an assembly kit made of separate elements (not included in the delivery set for the PREM) Composition of the KM mounting kit Straight sections ( pipes according to GOST 8734 or GOST 8732); Flanges in accordance with GOST 12820; Dimensional simulator PREM; Concentric transitions in accordance with GOST 17378, if the DU of pipelines and PREM do not coincide; Protective conductor. The external view of the mounting kit "KM" is shown in Fig. 7. Figure 7 Exterior view of the KM The dimensions of the KM set are given in the document “Set of pipelines assembly KM. Installation drawing ".

10 c.10 Instructions for installing PREM Recommendations for the manufacture of a mounting kit When making a mounting kit yourself, you must: Weld flanges to straight sections of the pipeline in accordance with GOST or GOST for Ru 16 kgf / cm 2. If necessary, weld concentric transitions in accordance with GOST Assembly of joints for welding and the dimensions of the welded seams must comply with GOST. Requirements for the accuracy of flange installation are shown in Fig. 8. Figure 8 To connect the equalizing conductors of the PREM (see Equipotential bonding), it is necessary to make holes in the flanges for the M5 screw or weld on the M5 screw (Fig. 9). Figure 9

11 PREM Installation instructions with Installation of the installation kit on the pipeline ATTENTION! In order to avoid damage to the PREM, installation and welding work should be carried out using the dimensional simulator of the PREM. The dimensions of the simulator are given in Appendix B Overall simulators of PREM. Before installation on the pipeline, the mounting kit and the PREM dimensional simulator must be assembled into a single structure using studs or bolts. The number of gaskets between the overall simulator PREM and each of the flanges depends on the type of flanges of the mounting kit and the type of PREM (Fig. 10). Figure 10 Installation options for the PREM dimensional simulator Note An additional gasket during PREM installation without lining protection should have a thickness of 3 mm.

13 PREM Installation instructions with Installation of PREM in the pipeline Installation of PREM in the pipeline should be carried out after completion of all welding, flushing and hydraulic works Installation of PREM of "sandwich" design When installing PREM of "sandwich" version, the types of used paronite gaskets are given in the table.PREM type Flange type With lining protection Without lining protection KM flanges KM gasket KM gasket Flanges according to GOST PREM gasket Note The types and sizes of gaskets are given in Appendix B. Options for installing PREM into the pipeline are shown in Fig. 11. Figure 11 Installation options for the "sandwich" PREM

14 c.14 Installation instructions for PREM Installation of PREM is performed in the following sequence: Lay gaskets. ATTENTION! The gaskets installed between the flanges must not protrude into the flow path of the pipeline along the inner diameter beyond the boundaries of the sealed surfaces. Place the flow meter between the flanges and secure it with studs. Center the inner holes of the pipeline and PREM. The alignment of the PREM and the flanges is ensured by the same distance between the protective casing of the PREM and the boundaries of the flange mirror. Tighten the stud nuts. Tighten the studs and nuts securing the PREM on the pipeline evenly, alternately, in diametrically opposite pairs. In this case, it is necessary to avoid the use of excessively large forces in order to avoid deformation of the PREM lining. The nuts are tightened in three passes. For the first pass, tighten with a torque of 0.5 MK, for the second pass 0.8 MK and for the third pass 1.0 MK. The moments of force when tightening the nuts are given in table. 2.Figure 12 Table 2 Recommended moments of force when tightening nuts DN Bolts Moments of force when tightening nuts Mk, (studs) Nm 20 4M M M16 or M M20 90

15 PREM Installation instructions c Installation of flanged PREM Installation of PREM is performed in the following sequence: Place gaskets supplied with PREM in flanges when using flanges in accordance with GOST or KM gaskets when using KM mounting kit. ATTENTION! The gaskets installed between the flanges must not protrude into the flow path of the pipeline along the inner diameter beyond the boundaries of the sealed surfaces. Place the flow meter between the flanges and fix it with bolts. Tighten the bolt nuts. Figure 13 Installation options for flanged PREM Tighten the bolts and nuts that fix the PREM on the pipeline evenly, alternately, in diametrically opposite pairs (Fig. 12). In this case, it is necessary to avoid the use of excessively large forces in order to avoid deformation of the PREM lining. The nuts are tightened in three passes. For the first pass, tighten with a torque of 0.5 MK, for the second pass 0.8 MK and for the third pass 1.0 MK. The moments of force when tightening the nuts are given in table. 2.

16 c.16 PREM installation manual 5 Potential equalization For normal operation of PREM, it is necessary that the potentials of the electronic unit of the flow meter and the measured liquid are EQUAL. ATTENTION! IT IS FORBIDDEN TO CONNECT ANY EXTERNAL CIRCUITS TO THE EQUALIZING CURRENT CONDUCTOR OF THE PREM! Depending on the type of pipeline, potential equalization is performed in the following ways: For metal pipelines that do not have an internal coating, by connecting equalizing conductors between the PREM electronic unit and adjoining flanges. 1 electronic unit; 2 screw М5; 3 equalizing conductor For metal pipelines with an inner coating or plastic pipes by connecting equalizing conductors between the PREM electronic unit and the alignment rings. 1 electronic unit; 2 screw М5; 3 equalizing conductor; 4 leveling rings; 5 spacers Alignment ring Note Alignment rings are not included in the scope of delivery.

17 PREM Installation instructions p.17 6 Installation of electrical connections You should start connecting electrical circuits after finishing the installation work. 6.1 Connection of electrical circuits Connection of external devices to the converter is carried out using cable communication lines using terminal blocks-sockets included in the delivery set.The electrical circuits of the PREM should be connected in accordance with the diagram shown in Fig. 14. The output pulse signal is generated at the PASSIVE OUTPUT provided by the opto-relay. Figure 14 PREM connection diagram

18 c.18 PREM installation instructions The layout of the connectors on the PREM electronic board is shown in Fig. 15. Figure 15 Connector layout The cable entry into the electronic unit of the converter is carried out through sealed PG7 glands, designed for cables with a diameter of 3 to 6.5 mm. In this case, the lower sealed lead-in is used to connect the line from the power supply, and the upper one is used to connect the signal lines. ATTENTION! It is forbidden to connect several PREMs to one power supply unit! When connecting, the signal and supply wires must have the form of a "U loop" so that water that gets on the wires does not penetrate into the electronic unit. ATTENTION! At the end of the installation, use an ohmmeter to make sure that the signal lines and power lines are not shorted to the pipeline!

21 PREM Installation instructions p.21 Appendix A Requirements for the length of straight sections (mandatory) Straight section is a straight section of the pipeline that does not contain local hydraulic resistance (narrowing, expansion, gate valves, valves, thermal converters, etc.). Note The lengths of the straight sections are indicated in the DN of the flow meter.

22 p.22 Installation instructions PREM Appendix B Dimensional simulators PREM Dimensional simulator of PREM For PREM of "sandwich" design Dimensional simulator IAP For PREM flanged DU IPS IPF L -0.4, mm L -0.4, mm

23 PREM Installation instructions p.23 Appendix C Types and sizes of gaskets Gasket material PON-B GOST Working pressure not lower than 2.5 MPa (25 kgf / cm 2). Dimensions of gaskets: KM gasket DN D1, mm D2, mm It is allowed to use gaskets of version B in accordance with GOST Gasket PREM Dimensions of gaskets correspond to version A in accordance with GOST

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