User Manual

Power supply
Operating voltage
- Non-Ex instrument 12 … 36 V DC
- EEx-ia instrument 12 … 30 V DC
Operating voltage with lighted indicating and adjustment module
- Non-Ex instrument 20 … 36 V DC
- EEx-ia instrument 20 … 30 V DC
Permissible residual ripple
- < 100 Hz U
ss
< 1 V
- 100 Hz … 10 kHz U
ss
< 10 mV
Load see diagram
1000
750
500
250
12 18
1614 20 22 24 26 28 30 32 34 36
Ω
V
4
1
2
3
Fig. 21: Voltage diagram
1 HART load
2 Voltage limit EEx-ia instrument
3 Voltage limit non-Ex instrument
4 Operating voltage
Electrical protective measures
Protection
- Housing, standard IP 66/IP 67
14)
Overvoltage category III
Protection class II
14)
Instruments with gauge pressure measuring ranges cannot detect the am-
bient pressure when submerged, e.g. in water. This can lead to falsification
of the measured value.
50 Process pressure transmitter IPT-11 Vers. 4.0 - ceramic sensor • 4 … 20 mA/HART
10 Supplement
31546-EN-090130