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User calibration – Carbolite 2116 used as an indicator User Manual

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2132/2116 Indicator


MC06 – 1.03

3

2

U

SER

C

ALIBRATION

The indicator is calibrated for life at manufacture against known reference sources, but there may
be sensor errors or other system errors. User calibration allows compensation for such errors, and
the 2132 or 2116 allows for a user 2-point calibration. This setting is password protected to avoid
accidental alteration.

Page to

iP

, scroll to

CAL.P

, and use Up  to alter the password. The password is

3

. If the correct

password is entered, the display shows

PASS

. Scroll to

CAL

and use  or  to observe the setting

FACt

(factory values, as manufactured) or

USEr

(user values). Change to

USEr

.

NOTE: before checking the calibration of the indicator, or of the complete system, remember to
reset the 2132 or 2116 to factory calibration values by setting the

CAL.P

parameter to

FACt

.

To enter a user calibration, scroll to each or the following parameters in turn and set the desired
values.

Pnt.L

low temperature for which an offset is to be entered

OFS.L

offset value for the low temperature

Pnt.H

high temperature for which an offset is to be entered

OFS.H

offset value for the high temperature

Example: the controller reads 3°C low at 400°C, and 5°C low at 1000°C. The parameter values
should be

Pnt.L=400

,

OFS.L=3

,

Pnt.H=1000

,

OFS.H=5

.

Negative or positive values can be entered: if the controller is reading high, negative offsets
would be appropriate.

Fig 4 gives a graphical representation of the 2-point calibration.

This manual is related to the following products: