i
The measurement/alarm/range values output through the interface are always out-
put in the adjusted display unit!
Attention: When using the interface, the auto-range-function should be
turned off. If auto-range is activated, the returned value are based on the
resolution of the smallest range, there may be returned extreme values
like 123400.0 µS/cm instead 123.4 mS/cm.
9.2 Analogue output
An analogue voltage of 0-1 V can be tapped at the universal output jack (Out dAC setting).
With DAC.0 and DAC.1 the analogue output can be scaled very easily.
It must be ensured that the analogue output is not too heavily stressed, otherwise the output
value can be falsified and the power consumption of the device increases sharply. Loads of
up to approx. 10kOhm are harmless.
If the display exceeds the value adjusted with DAC.1, 1V is output.
If the display undercuts the value adjusted with DAC.1, 0V is output.
In the event of an error (Err.1, Err.1, etc.), a voltage slightly above 1V is output at the ana-
logue output.
Attention: We suggest to choose a fixed unit for the display (e.g. "InP
cond") when using the analog output. If "InP SEt" is chosen instead, this
may lead to unpredictable behaviour of the output.
10. Adjusting the temperature input
With offset and scale, the measurement inputs can be adjusted, both for the voltage meas-
urement and the temperature measurement. Requirement: Reliable references are available
(e.g. ice water, regulated precision water baths, etc.):
If an adjustment is made (deviation from factory setting), this is signalled with the message
"Corr" when the device is switched on.
Standard setting of the zero point and slope values is: "off" = 0.0, which means no correc-
tion has been made.
Only offset correction:
Offset = measured value – setpoint
Offset and slope adjustment:
Setpoint = (measured value – OFFS)
.
(1 + SCAL / 100)
(Display °F =(measured value °F - 32°F - OFFS)
.
(1 + SCAL / 100 ))
Setpoint
Measured value - OFFS
SCAL =
.
100 -100
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