AV-2 output controller is designed for use with Irga-2 computers, Irga-RV flow meters (vortex flow meter), or Irga-RS (jet flow meter).
AV-2 output controller is designed for use with Irga-2 computers, Irga-RV flow meters (vortex flow meter), or Irga-RS (jet flow meter).
The versions intended for operation with the computer (V version group) and for operation with the flow meter (R version group) differ in software settings.
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Overall dimensions |
no more than 70x95x60 mm |
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Weight |
no more than 0.2 kg |
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DC power supply |
12 to 24 V |
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Power consumption |
no more than 1 W |
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Ambient temperature |
- 25 to + 50 °С |
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Warranty life |
50,000 hours |
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Mean operating time |
12 years |
wired
wireless using a radio channel
V version group (compatible with the computer):
VCH - frequency signal, 0 to 2,000 Hz
VT1 - current signal, 0 to 5 mA (only for wired version)
VT2 - current signal, 0 to 20 mA
VT3 - current signal, 4 to 20 mA
VI - impulse-number signal, (only for wired version)
R version group (compatible with the flow meter) (wired only):
RT2 - current signal, 0 to 5 mA
RT3 - current signal, 4 to 20 mA
When operating with the computer, the controller receives digital information about the current tracking parameter and transmits it as a frequency, an impulse-number or current signal via a communication line or using a radio channel (depending on version).
AV-2 wireless version using a radio channel consists of two units: transmitter - AB-2P (A) and receiver - AB-2P (B).
The information between the AB-2P (B) and the AB-2P (A) is exchanged over the air at a frequency of 433 MHz
Installed power of the radio transmitter - 10 mW
Transmission distance in direct visibility - from 1 km to 4 km (AN-433-type directional antennas)
The AB-2P (B) unit requests the computer to read the tracking parameter value
(instantaneous gas volume flow reduced to standard conditions for gas metering units, or instant mass steam consumption for steam metering units)
The computer provides the requested value in digital form after the next cycle of measuring the environmental parameters and calculating the new value of the tracking parameter
The AB-2P (B) unit receives this information from the computer and encodes it for wireless transmission
The AB-2P (А) unit receives wireless information, decodes it and determines the frequency or current of the output signal
It is possible to develop and produce other versions of the controller, in accordance with the customer's operating conditions
The controller can be used in automated systems for accounting and control of energy and energy resources, taking into account the thermal and hydraulic heat supply and heat consumption systems in technological processes
Polling the wired computer and obtaining the instantaneous value of the required parameter
Generation of a frequency, impulse-number or current signal proportional to the parameter, with the conversion coefficient specified in the computer settings
Polling the wired flow meter and obtaining an instantaneous value of volumetric gas discharge or steam mass flow
Generation of a current signal, which is proportional to the flow
The type of the output signal when operating with the computer (DC power, the frequency of a periodic signal such as a meander or an impulse-number signal) is determined when configuring the computer.