822-1002-C01 Datasheet, PDF (27/40 Pages) Magnetrol International, Inc. – Kotron® Sentinel Models 822, 832 and 842

2.5 Advanced Calibration
Use these procedures in conjunction with standard calibra-
tion procedures already observed.
2.5.1 Calibration with No Level Change
1. Single Point: Accomplished in Section 2.3.2, Program
Path 2 — Single Point procedure.
2.5.2 Tank Commissioning
Initial calibration in water (conductive medium) with final
use in a non-conducive medium. If final medium is also
conductive, no calibration change is necessary
2.5.2.1 Single Point
1. Water (commissioning medium): Follow standard calibra-
tion procedure.
2. Final Process Medium (non-conductive): In Single Point
program, change MDIA (media) from COND (conductive)
to NONC (non-conductive)
2.5.2.2 Multi-Point
NOTE: Proper probe choice is critical. If final medium is conductive
(i.e., dielectric is >10 or conductivity is >10 micro mho/cm),
any insulated probe may be utilized. If final medium is non-
conductive (i.e., dielectric is <10 or conductivity is <10 micro
mho/cm), an insulated stilling well probe must be utilized
(models 8XA-XAXB-XXX or 8XB-AAXB-XXX).
1. Water
a. Establish PRLO point (refer to Section 2.4.2, Program
Path 3 – Probe Calibration). With probe installed and
NO liquid in the vessel, enter PRLO point. This value
should equal the distance of the tip of the probe from
the bottom of the vessel, plus one inch.
b. Establish PRHI point (refer to Section 2.4.2, Program
Path 3 – Probe Calibration). Raise level of the commis-
sioning liquid (usually water) to the highest point
possible. Enter PRHI point.
c. Complete relay calibration (refer to Section 2.4.2,
Program Path 3 – Probe Calibration).
2. Final Process Medium
With commissioning liquid removed and final process
medium in the vessel, reestablish PRHI point (for best
results at least 25% of the probe should be immersed).
Relay control parameters are now calibrated to the new
process medium.
50-621 Kotron Sentinel Models 822, 832 and 842 RF Point Level Switches
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