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11. Measuring with the measuring menus
1. Setting up a means of calibration for the zero point:
Function Select setpoint 1 Setpoint 1:
Zero-point adjustment by pressing
Adjustment value is retained
In the case of pH probes you can by pressing
default values, base value 7.00 and gain -0.1689.
2. Setting up a means of calibration for the slope:
Function Select setpoint 2
Gain adjustment by pressing
Adjustment value is retained
Gain shows approx.
The gain error shows the deviation from the
rated value and thus the status of the probe. Gain error
If sensors are locked they can be temporarily unlocked by pressing
<FREE>
11.2.4 Two-point adjustment with setpoint entry
In menu
U1 Measured value correction
formed for other sensors. In addition to zero-point adjustment11.2.2gain is also
corrected in the
correction factor is calculated automatically at the touch of a button and stored
as factor on the sensor connector.
1. Zero-point adjustment
Put sensor in its zero status
(icy water, unpressurized, etc.)
To set measured value to zero (see 11.2.2) press
2. Final value correction
Adjust sensor in a defined setpoint
(boiling water, known weight, etc.)
With ALMEMO force transducers
activate calibration resistance (see Man. 3.6.2)
Enter setpoint in function ´Setpoint´
Adjust measured value in function ´Setpoint´ :
The measured value shown should then be the setpoint. 00: 100.0 °C
If the sensor is locked at level 4 the correction factor is programmed
as ´Factor´; if the sensor is locked at level <= 3 or temporarily un-
locked by pressing
gain correction (see 12.3.7).
34
ALMEMO
.
function by means of a second measuring point. The
Setpoint
<FREE>
®
5690-2M
07.00
pH
<ADJ>
00:
07.00
Setpoint 2
<ADJ>
00:
10.00
Gain :
two-point adjustment can also be per-
<ZERO>
00: 098.7 °C
<ON>
Setpoint :
<ADJ>
, the correction factor is programmed as
pH
º
<CLEAR>
restore the
10.00
pH
pH
º
-0.1689
9 %
/
<ADJ>
,
PROG
or
<OFF>
100.0 °C
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