Rtd Calibrate Menu Structure; Rtd Calibration By Data Entry; Ice Bath Rtd Calibration - Siemens SITRANS F Operating Instructions Manual

Section 4
RTD CALIBRATE MENU STRUCTURE (Single Channel 1010)
RTD Calibrate

4.5.6 RTD CALIBRATION BY DATA ENTRY

The RTD Calibrate menu allows you to adjust the intrinsic RTD reading to match an external reference
thermometer by directly entering its reading. Only perform this procedure while the RTD under test is
installed and currently measuring a known temperature.
To enter the current RTD temperature:
Move the highlight to the RTD you want to calibrate (RTD1 or RTD2).
To access the RTD option list press
Move the highlight to [User Cal] or [Factory] Cal then press
window:
To enable numeric entry press
(e.g.72.0):
To recalibrate the RTD sensor press
Data] to check the current RTD output. Make sure it coincides with the reading of the reference ther-
mometer. Repeat for the other RTD, if necessary.
NOTE: Factory Calibration provides an additional prompt after 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.

4.5.7 ICE BATH RTD CALIBRATION

Use distilled, deionized water and ice mixture at 0ºC (32ºF) equilibrium for an ice bath. Ensure tem-
perature with a reference thermometer. Siemens can not assume responsibility for the incorrect de-
sign, construction or operation of an Ice Bath.
CAUTION: DO NOT ALLOW AN RTD SENSOR TO MAKE DIRECT CONTACT WITH
ICE DURING AN ICE BATH CALIBRATION.
To perform a 32ºF (0ºC) RTD calibration:
Immerse RTD sensor in deionized water and ice mixture. Stir the mixture constantly.
Move the highlight press
To access the RTD option list press
This triggers the pop-up window.
RTD 1
RTD 2
Calib @ deg F
=32.0
, then type in the reading of the reference thermometer
Calib @ deg F
=72.0
ENT
. To verify the calibrated reading, go to [Diagnostics/Liquid
to the RTD you want to calibrate (RTD1 or RTD2).
. Move the highlight to [User Cal] then press
4-11
Factory
User Cal
Factory
User Cal
ENT
. This triggers the pop-up
1010PFM-3G
ENT
.