Mass flow meter MFM 2120

for gasRS-2325 VDC

The MFM 2120 is a standalone meter. Its purpose is to be a ready-to-use gas flow meter with standard gas fittings. According to the needs of the customer, the data output can be read in analog (voltage or current) or digital using RS-232 (EIA 232) with direct connection to the PC. Analog voltage or analog current input / output is selected as default at the factory level when ordering. The way the customer wants to communicate with the device, analog or digital, can be set later at any time with the corresponding digital command. This configuration is stored in EEPROM making the device starting always in the same configuration. The analog output is the gas flow measurement value. Voltage (0…5 V) or current (4…20 mA) outputs are available. They are configured at the factory level. The digital communication in customer mode offers additional information (see chapter 6 how to code – decode the digital data): Read Data: - Gas flow (depending on the request with single, multiple or continuous output data) - Temperature - Serial number (unique for each device) - PCB number - Software version - Offset value - Gas type that is currently measured (in case of multi-range and/or multi-gas calibration device). Up to 8 ranges for one device can be calibrated. - Calibrated gas information (gas type, full scale range, calibration conditions…see chapter 6 for more details) Write Data: - Channel selection (in case of multi-range and/or multi-gas calibration) - Offset zeroing