Precision Water Level Instrument
Unidata Manual 6293 - Precision Water Level Instruments Issue 2.1
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4.9 Bench Testing the Instrument System
If practical, assemble the equipment in the housings and on the mounting you will be
using at the field site. This will ensure you have everything you need. When you
have connected the instrument to the logger and selected the correct settings, you
load the scheme into the logger.
Connect your PC to the logger and select the scheme you have prepared. Select
“Program Logger with Scheme”, then “Scheme Test Mode”. The screen display
should show the correct scheme details and the same value as displayed on the
instrument LCD. When you change the level displayed on the LCD by rotating the
float pulley wheel, the PC screen display should update each scan and display the
correct value.
If you have a suitable test facility, set-up a temporary float system and install your
instrument system. If possible, cause the “water surface” to slowly rise and fall and
log the data. Check that the water level and the values on the LCD and PC test screen
change in synchronisation.
After logging some data, unload and review it using the scheme report. Ensure the
data you require is being logged and that the system is operating accurately.
Dismantle the system and pack it for transport to the installation site.