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The transmitters PRE-28.Modbus have two operating modes, configuration mode and Modbus mode. The configuration mode
is used for changing settings and detailed diagnostics of the transmitter. In this mode you can also activate a current loop
compatible with a 4-20 mA current output.
Technical data
Accuracy Ł ±0,1% of calibrated range
Long-term stability Ł accuracy for 3 years
(for the basic range)
Thermal error < ±0,08% (FSO) / 10°C
max. ±0,3% (FSO) in the whole compensation range
Thermal compensation range -25...80°C
Zero shift error for static pressure
0,01% (FSO) / 10 bar for ranges no. 3, 4, 5, 6, 7
0,03% (FSO) / 10 bar for range no. 8
0,06% (FSO) / 10 bar for ranges no. 1, 2
Zeroing the transmitter in conditions of static pressure can eliminate this error.
Error due to supply voltage changes 0.002% (FSO) / V
Materials
Wetted parts and diaphragms: 316Lss
Casing: 304ss (optional: 316ss)
Electrical parameters
Power supply 4…28 V DC
Exia version: 4…10 V DC
in 4…20mA mode (only non Exia version): 5..28 V DC
Transmission range 1200 m
Output MODBUS RTU or 4…20 mA
Address space 1…247 devices address
Transmission speed 1200, 2400, 4800, 9600,
19200, 28800, 38400, 57600, 115200 bps
Parity transmission no parity, odd, even
Frame transmission 10…11bits (1, 2 bit-stop)