Functions
7.11 RTD Calibration
FUE1010 IP65 NEMA 4X
128 Operating Instructions, 12/2014, A5E03086491-AC
5. To enable numeric entry <Right Arrow>, then type in the reading of the reference
thermometer (e.g., 72.0).
6. To recalibrate the RTD sensor <ENTER>. To verify the calibrated reading, go to the Dual
Path Flow menu [Diagnostic Data/Liquid Data] menu to check the current RTD output.
Make sure that it coincides with the reading of the reference thermometer. Repeat for the
other RTD, if necessary.
Note
Factory Calibration provides an additional prompt aft
er a new temperature is entered:
[Are you Sure? No Yes]. It is recommended that you use [User Cal] to avoid alteration of
preset factory calibration.
Use distilled, deionized water and ice mixture at 0°C (32°F) equilibrium for an ice bath.
Ensure temperature with a reference thermometer. Siemens can not assume responsibility
for the incorrect design, construction or operation of an Ice Bath.
If RTD sensor makes direct contact with ice during an ice bath calibration procedure the
sensor may be damaged and the calibration results will be incorrect.
Do not allow an RTD sensor to make direct contact with ice during an ice bath calibration
procedure.
To perform a 0°C (32°F) calibration:
1. Immerse RTD sensor in deionized water and ice mixture. Stir the mixture constantly.
2. In the [RTD Calibrate] menu move the highlight by pressing <Up/down Arrow> to the RTD
you want to calibrate (RTD 1 or RTD 2).
3. To access the RTD option list press <Right Arrow>. Move the highlight to [User Cal] then
press <ENTER>. This triggers the pop-up window.
4. When you are sure that the RTD Sensor is at 0°C (32°F), press <ENTER> to recalibrate
the RTD sensor.
5. To verify the calibrated reading, go to Dual Path Flow [Diagnostic Data/Liquid Data] menu
to check the current RTD output. Make sure that it coincides with the reading of the
reference thermometer. Repeat for the other RTD, if necessary.
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