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19
5.0 OPERATION
5.1 INITIAL BENCH TESTING
New units may be tested on the bench before installation, if desired.
For units consisting of the Probe only –
1. Connect a proper Power Supply to the correct wires.
Caution: Observe polarity!
2. Using a DC Voltmeter, measure the 0 to 10 Vdc Output and confirm that it
corresponds to the room condition. (Humidity, Temperature, etc.)
For systems consisting of the Probe and the Electronics Unit –
1. Connect the Probe to the Electronics Module.
2. Connect a proper Power Supply to the correct terminals.
Caution: Observe polarity!
3. Measure the 4 to 20 mA Output as above, or read the Digital Display.
Confirm that the reading corresponds to the room condition. (Humidity,
Temperature, etc.)
5.2 NORMAL OPERATION
Note:
This section assumes that all required electrical wiring and mounting has
been completed. See the Installation section for further information if
necessary.
Use of the HX80 series of probes is extremely simple. There are no controls to operate
during normal use, as these devices are designed for long-term unattended operation.
With the Analog Outputs, Digital Outputs, and/or Alarm Relays connected to a Data
Acquisition System, Recorder, Process Controller, Computer, or Terminal, the user has
only to periodically monitor the system for normal operation.
5.3 FACTORY DEFAULT RANGES
The scaling of the default measurement ranges may be changed in the field via the
Serial Port if required. See Section 5.4 below for range-changing instructions.
The following ranges are set at the Factory. They correspond to the three separate 0 to
10 Vdc analog outputs that are provided. The scaling of these ranges may be changed
in the field via the Serial Port if required.
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