Products and solutions Product Catalogue Heat and Water Meter SVTU-10М Performance specificationPerformance specification for SVTU-10М
- SVTU-10М (М1, М2) - up tо 2 heat measuring channels with up to 2 flow measuring channels;
- SVTU-10М (5М1, 5М2) - up to 4 heat measuring channels with up to 5 flow measuring channels;
- Nominal bores of the flowmeters - from 20 to 1000 mm inclusive;
- The permissible flow rate of the heat-carrier fits with the velocity 10.0 m/s;
- Flow measuring range - 1.0...100%;
- Heat carrier temperature measuring range - 0...150°С;
- Permissible temperature difference in supply and return pipelines 2.5...150°С;
- Operating pressure up to 16 bar (16 at);
- Accuracy range :
- for absolute temperature measurement - 0.2°С;
- for temperature difference measurement - 0.1°С;
- for measurement of the flow rate, volume and mass of a heat-carrier
2.0 (3.0 for Qmin...Qt) % for models М2, 5М2;
1.0 (3.0 for Qmin...Qt) % for models М1, 5М1; - for measurement of heat capacity and heat energy - 2.5 (4.5 for Qmin...Qt) %. Meters of variants 2, 5, 6, 8 correspond to accuracy class 2.5, meters of variants 4, 7 , 9 correspond to accuracy class 4 EN1434;
- for time measurement - 0.01%;
- Parameters of power line 50Hz 24/36/220V±15%, power consumption - 7 VА (М1, М2), 15 VА (5М1, 5М2);
- Ambient temperature at humidity less 80% - 0...50°С;
- Measuring results can be represented in measuring systems SI or CGS;
- Built-in power backup module - SVTU-10М (5М1, 5М2) - operating time not less than 8h.
The additional errors caused by influencing parameters like temperatures, ambient humidity and supply voltage in operational ranges of their change are absent.
The calibrated platinum temperature sensors are used. Their connection is carried out by a four-wire cable. Connection with flow sensors is carried out by the standard shielded cable. The maximal length of connecting cables - up to 100 metres.
Connection with external devices is carried out via RS-232 or RS-485. Direct computer or modem connection via RS-232.
The length of communication line RS-232 is up to 200 meters (at the minimal rate of exchange 2400). The length of line RS-485 is up to 2 km. Combining of meters in groups when communication is carried out through any chosen one meter is possible. Thus the remote reading via RS-485 is realised. For example, it is possible to contact several meters via one modem .
The delivery set for a single-channel meter includes the calculating device, anticorrosive flow measuring section, flanges, fixture, ultrasonic flow sensors and temperature sensors with plugs, sealing linings, connecting cables.
For flowmeters with DN 50 and more pressure losses do not exceed 0.007 bar, for flowmeter with DN32 pressure losses do not exceed 0.085 bar.
For power standby the external power backup module is used in models M1 and M2 and the built-in power backup module is used in models 5M1 and 5M2 ; a direct output on the telephone or radio modem is carried out by the built-in unit MDM ; formation of control signals for regulating valves, pumps, recording and threshold devices is carried out by the built-in unit REG .
MEASURED PARAMETERS AND VARIANTS OF SUPPLY
Meter SVTU-10М (М1, М2) has two independent heat measuring channels and is applied for measurement of:
- Temperature of the heat-carrier (water) in supply and return pipelines, in feeding pipeline and also an ambient temperature (four independent channels of temperature measurement);
- The volume, flow rate and mass of the heat-carrier in supply and return pipelines;
- The heat capacity and heat energy;
- The mass and volume water leakage;
- The internal pressure in two independent points of the pipeline;
- Total time of powering.
Оne calculating device of heat meter SVTU-10М (М1, М2) realiszes 11 typical variants of supply.
Meter SVTU-10М (5М1, 5М2) has four independent heat measuring channels and is applied for measurement of:
- Temperature of the heat-carrier (water) in supply and return pipelines, in feeding pipeline and also an ambient temperature (eight independent channels of temperature measurement);
- The volume, flow rate and mass of the heat-carrier in supply and return pipelines;
- The heat capacity and heat energy;
- The mass and volume water leakage;
- The internal pressure in four independent points of the pipeline;
- Total time of powering.
Every heat measuring channel irrespective of other heat measuring channels can have a configuration in accordance with following variants of supply: 1, 2, 2/1, 2/2, 4, 5, 7, 9, 10, 11, 11/1, 12. The set of channel configurations is limited only by number of channels for measurement of the flow rates, temperatures, etc.
Variants of supply (configuration) for heat meters:
