Endress+Hauser Proservo NMS81 Technical Information page 21

Proservo NMS81
Endress+Hauser
"4-20mA HART" I/O module (Ex d/XP or Ex i/IS): Technical data
General data
No. of units Max. 6 instruments per loop
Baud rate 1 200 bit/s
Cable Two-wire, twisted pair screened cable;
Core cross section: 0.2 to 2.5 mm
Topology • Serial bus
• Tree structure
Transmission distance Maximum 1 200 m (3 900 ft)
Instrument address Each transmitter on a signal loop has an individual bus address. This is defined within
the transmitter software and / or auxiliary configuration environment such as host
system or Field Communicator 475.
Isolation Bus inputs are electrically isolated from the other electronics
Input data
Input operating modes
Internal load (to ground)
Measuring range
Accuracy
Connection of a Prothermo NMT
Connection of a RTD temperature
probe
Output data
Output operating modes
Output current
Accuracy
Error on alarm
2 (24 to 13 AWG)
• 4..20mA input (1 external device)
• HART master+4..20mA input (1 external device)
• HART master (up to 6 external devices)
400 Ω
0 to 26 mA
±15 µA (after linearization and calibration)
The measured level is transmitted to the Prothermo. Prothermo uses this
level to calculate the average temperature of the product.
2-, 3- or 4-wire connection
• 4..20mA output
• HART slave +4..20mA output
3 to 24 mA
±15 µA (after linearization and calibration)
HART error message classified according to NAMUR NE 107
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