MTE HYDROCAL 1001 Plus - Page 76

HYDROCAL 1001+ Installation and operation manual Page 74/76
Communication
 ETHERNET 10/100 Mbit/s modem copper-wired / RJ 45 or fibre-optical / SC Duplex (proprietary
or MODBUS
®
TCP protocol)
 RS485 communication interface (proprietary or MODBUS
®
serial RTU/ASCII protocol)
Operation principle
 Diffusion principle with gas-permeable TEFLON membrane
 Fuel cell-gas sensor for H
2,
CO, CH
4
, C
2
H
2,
C
2
H
4
and C
2
H
6
 Thin-film capacitive moisture sensor for H
2
O measurement
Notes
1)
120 V  120 V -20% = 96 V
min
120 V +15% = 138 V
max
230 V  230 V -20% = 184 V
min
230 V +15% = 264 V
max
2)
Related to temperatures ambient +20°C and oil +55°C
3)
Accuracy for moisture in oil for mineral oil types
4)
Relay 1: Gas Hi alarm
Relay 2: Gas Hi-Hi alarm
Relay 3: Moisture alarm
Relay 4: System alarm (Function)