Gas Calibrate And Purge - Novatech 1732 Operator's Manual

The Novatech oxygen sensor that is used in the Novatech oxygen probe is extremely predictable, stable and
reliable. For this reason, the calibration of a Novatech oxygen system does not require the use of calibration
gases.
However, all Novatech oxygen probes have a built in gas connection that does allow the accuracy of the
probe to be checked. This chapter describes the operation of this gas checking system. For further details
see the 1732 Technical Manual.
The 1732 has a timer and solenoid driving system that can be configured to admit a certified calibration gas
into the probe or an air supply to purge the probe filters through the gas connection. Both the calibration gas
and the filter purge gas must be piped to the port on the probe labelled "CAL/PURGE".
There are two solenoids drivers in the 1732 transmitter. They can be used for a variety of combinations of
gas checking and probe purging functions. The available options depend on the way that the transmitter has
been configured.
Single Probe
Configuration
Gas 1 & Purge 2 Solenoid 1 should be connected to calibration gas and
Solenoid 2 should be connected to the purge gas
Gas 1 & Gas 2 Solenoid 1 should be connected to calibration gas #1 and
Solenoid 2 should be connected to calibration gas #2
Dual Probe
Configuration
Purge 1 & Purge 2 Solenoid 1 should be connected to the purge gas on probe #1 and
Solenoid 2 should be connected to the purge gas on probe #2
Gas 1 & Gas 2 Solenoid 1 should be connected to calibration gas #1 and
Solenoid 2 should be connected to calibration gas #2
The transmitter can also be configured to be in a MANUAL or AUTOMATIC purge and gas check mode.
The information on configuring the transmitter is contained in the 1732 Technical Manual.
February 2015
1732 Oxygen Transmitter
7. G C
AS ALIBRATE AND
P
URGE
Operators Manual
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