Operation - Endress+Hauser iTEMP HART TMT 182 Bedienungsanleitung

Potential levelling

6 Operation

Presettable parameters
Standard settings
14
Please take note when installing the head transmitter remotely in a field
housing: The screen on the 4 to 20 mA signal output must have the same
potential as the screen at the sensor connections!
When using earthed thermocouples screening of the output 4 to 20 mA
cable is recommended. In plants with strong electromagnetic fields
screening of all cables with a low ohm connection to the transmitter housing
is recommended.
Setting up of the transmitter is done using the HART
®
HART modem COMMUBOX FXA 191 and PC operating software (e.g.
COMMUWIN II, FieldCare or ReadWin
module DXR 275/375. These units are available as accessories. (See
"Accessories" on page 15).
The following table shows the structure of the PC configuration software
®
ReadWin 2000 interactive menu operation:
• Sensor type
• Connection (2-, 3- or 4-wire connection)
• Units (°C/°F)
• Measurement range start (depends on sensor)
• Measurement range end (depends on sensor)
• Coefficient X0 to X4 (on sensor type polynom RTD/TC)
• Temperature compensation (on sensor type polynom TC)
®
protocol using the
®
2000) or the hand operating