Hach Ultra ORBISPHERE 510, Operator'S Manual

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76 of 138 Inputs/Outputs Menu - Orbisphere 510/511/512 Analyzers
Operator Manual
ORBISPHERE
6.4.4 Direct Test
6.4.5 Characteristics Test
Test to check the calibration of the analog outputs. A
precision ammeter connected at the corresponding
analog output connection point is required.
Select a value (4, 12, 20 mA available) and compare
this value (+ 0.02 mA) with that which the ammeter
shows.
A calibration is required if the value on the ammeter
differs from the current selected (+ 0.02 mA).
Note:
It is possible to test one analog output without interfering with the others. During the
test, the other analog outputs will continue to indicate the measurement.
This is a test for the correct operation of the peripherals
connected to the analog outputs, by verifying that the PLC
computes the correct value.
The analog output will send the current corresponding to
the value entered in the text boxes.
Type in a test value for the analog output to be tested,
and check for the related action on the peripheral.