In detail: do-it-yourself PREM repair from a real master for the site my.housecope.com.
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Date of registration on the forum: 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
Video (click to play).
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.
displays readings on the built-in scoreboard;
archives measurements and diagnostic results;
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!
