Endress+Hauser iTEMP TMT112 - Page 18

Commissioning iTEMP TMT112
18 Endress+Hauser
For detailed operating instructions for the PC configuration software, please read the
documentation (Readme.txt) contained in the PC software (see folder "Doc").
Customer-specific linearization
Customer-specific linearization and sensor matching are activated after the POLYNOM RTD
sensor type is selected. Pressing the “LINEARIZATION” key starts the SMC 32 module. The
sensor's support points and temperature deviation are entered in the SMC 32. Pressing the
“CALCULATE” key calculates the linearization and “OK” adopts it into the PC configuration
software. Linearization coefficients X0 to X4 are entered into the operating matrix or in
the ’HART® Communicator’.
7.2.3 Description of unit functions
The following table contains a listing and description of all unit functions of the HART®
protocol that can be used for setting up the DIN rail temperature transmitter.
Factory default values are shown in bold text.
The ’HART® Communicator’ display is indicated by the following symbol .
PV (Primary value) Display of actual measured temperature.
Display: 7-digit number with floating decimal point and engineering unit.
(e.g. 199.98 Ω; –62.36 °C, 407.76 °F)
Int. temperature Display of the actual measured temperature of the internal comparison measurement
point.

Display: 7-digit number with floating decimal point and engineering unit.
Damping
Filter time
Digital filter selection 1
st
grade.
Input: 0 to 100 seconds
0 sec.
Cold junction
RJ Mode
Selection of internal (Pt100) or external (0 to 80 °C (32 to 176 °F)) cold junction
compensation.
Entry: internal; external
internal

Entry only possible on selection of thermocouple (TC) in unit function SENSOR
TYPE.
1)
External temp.
RJ external value
Entry of external cold junction value.
Entry: –40 to 185 °F(–40 to 85 °C) (°C, °F, K)
0 °C

Entry only possible on selection of an external cold junction compensation in unit
function RJ MODE.
Offset
Bias input
Entry of zero point correction (Offset).
Entry: -18.00 to 18.00 °F (10.00 to 10.00 °C) (°C, °F, K)
0.00 °C

Entry returns to factory default values when changing sensor type!
Sensortype
Sensor input
Entry of sensor used:
Sensor type Range start Range end value