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Isco 4700 Refrigerated Sampler
Section 5 Maintenance
SELECT DIAG: (<-->)
LOADED BATTERY VOLTS
LOADED BATTERY VOLTS
__._ V
5.2.13 Analog Input
SELECT DIAG: (<-->)
ANALOG INPUT
ANALOG INPUT:
__._ mA
5-12
Note
Repeated use of the Loaded Battery Volts diagnostic will
shorten the battery life.
To display the loaded battery voltage:
1. Select the LOADED BATTERY VOLTS option and press
Enter.
2. The display shows the voltage at 1 second intervals for 15
seconds. You can abort the test by pressing the Enter but-
ton.
If the voltage is below 2.2 VDC, the internal battery should be
replaced. Contact your authorized Isco service facility or the
Teledyne Isco factory for assistance.
Note
Should there be a loss of AC power and the internal battery's
loaded voltage is below 2.2 VDC, the sampler might lose data
and settings from its memory. It is recommended that you
retrieve the data and record the program and configuration set-
tings in case of memory loss.
The ANALOG INPUT diagnostic displays the 4-20 mA current
loop input to the sampler. This diagnostic tool is helpful when
troubleshooting an analog input from a flow measurement
device.
When you start this test, the sampler will display the current
reading until you press the Stop or Enter button. There is no
pass or fail.
To display the analog input current:
1. Select the ANALOG INPUT option and press Enter.
2. The display shows the current reading until you press the
Stop or Enter button.
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