Endress+Hauser iTEMP TMT162 - Page 72

Operating menu and parameter description iTEMP TMT162
72 Endress+Hauser
Options • Sensor 1 (measured value)
• Sensor 2 (measured value)
• Device temperature
• Average of the two measured values: 0.5 x (SV1+SV2)
•
Difference between sensor 1 and sensor 2: SV1-SV2
• Sensor 1 (backup sensor 2): If sensor 1 fails, the value of sensor 2 automatically becomes
the primary HART
®
value (PV): sensor 1 (OR sensor 2)
• Sensor switching: If the value exceeds the configured threshold value T for sensor 1, the
measured value of sensor 2 becomes the primary HART
®
value (PV). The system
switches back to sensor 1 if the measured value of sensor 1 is at least 2 K below T:
sensor 1 (sensor 2, if sensor 1 > T)
• Average: 0.5 x (SV1+SV2) with backup (measured value of sensor 1 or sensor 2 in the
event of a sensor error in the other sensor)
The threshold value can be configured using the Sensor switch set point
→  76parameter . With temperature-dependent switching, it is possible to
combine 2 sensors that offer advantages in different temperature ranges.
Factory setting Sensor 1
Lower range value
Navigation Setup → Lower range value
Expert → Output → Lower range value
Description Use this function to assign a measured value to the current value 4 mA.
The limit value that can be set depends on the sensor type used in the Sensor type
→  69 parameter and the measured variable assigned in the Assign current
output (PV) parameter.
User entry Depends on the sensor type and the setting for "Assign current output (PV)".
Factory setting 0
Upper range value
Navigation Setup → Upper range value
Expert → Output → Upper range value
Description Use this function to assign a measured value to the current value 20 mA.
The limit value that can be set depends on the sensor type used in the Sensor type
→  69 parameter and the measured variable assigned in the Assign current
output (PV) parameter.
User entry Depends on the sensor type and the setting for "Assign current output (PV)".
Factory setting 100