Table of Contents
Advertisement
1. U
T
M
SING
HIS
ANUAL
This manual is a shortened version of the 1732 Oxygen Transmitter product manual to be used by the
operator. It does not cover the commissioning, calibration or servicing of the 1732 Oxygen Transmitter. If
more detailed information is required than what is provided in this manual please refer to the more detailed
1732 Oxygen Transmitter Technical Manual. Both manuals are supplied with each transmitter and are also
available to download at the Novatech Controls website.
http://www.novatech.com.au/1732
It is assumed in this manual that the transmitter has been installed by qualified personal and that the wiring
to the main power supply, the oxygen probe and all the associated signal devices complies with the local
safety codes and regulations.
1.1 Cautions
Please read the safety information below before connecting power to the transmitter.
CAUTION 1
The probe heater is supplied with MAINS VOLTAGE. This supply has electrical shock danger to
maintenance personnel. Always isolate the transmitter before working with the probe.
The EARTH wire (green) from a heated probe must ALWAYS be connected to earth.
CAUTION 2
Combustion or atmosphere control systems can be dangerous. Burners must be mechanically set up so that
in the worst case of equipment failure, the system cannot generate explosive atmospheres. This danger is
normally avoided with flue gas trim systems by adjustment so that in the case of failure the appliance will not
generate CO in excess of 400 ppm in the flue. The CO level in the flue should be measured with a separate
CO instrument, normally an infrared or fuel cell type.
CAUTION 3
The oxygen probe is heated to over 700°C/1290°F and is a source of ignition. Since raw fuel leaks can
occur during burner shutdown, the transmitter has an interlocking relay that removes power from the probe
heater when the main fuel shut-off valve power is off. If this configuration does not suit or if it is possible for
raw fuel to come into contact with a hot oxygen probe then the Model 1732 transmitter with a heated probe
will not be safe in your application.
An unheated probe can be utilised in such applications, however the oxygen readings are valid only above
650°C/1200°F.
CAUTION 4
The reducing oxygen signal from the transmitter and the associated alarm relay can be used as an explosive
warning or trip. This measurement assumes complete combustion. If incomplete combustion is possible
then this signal will read less reducing and should not be used as an alarm or trip. A true excess
combustibles analyser, normally incorporating a catalyst or thermal conductivity bridge, would be more
appropriate where incomplete combustion is possible.
Also read the probe electrical shock caution in the probe heater interlock caution in chapter 4.7 of the Model
1732 Technical Manual.
CAUTION 5
FIL-3 filter. If the optional FIL-3 has been fitted to the 1231 probe in this installation, please read the
Important Notice in the Technical Manual.
February 2015
Operators Manual
1732 Oxygen Transmitter
3
Advertisement
Table of Contents
