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7.2.22 Common Alarm Relay Function
The common alarm relay can be configured to be triggered on any of the following:
Instrument Alarms
Probe 1 Heater Fail
1
Probe 2 Heater Fail
Probe 1 High Impedance
Probe 2 High Impedance
Probe 1 Thermocouple Open Circuit
Probe 2 Thermocouple Open Circuit
Aux Thermocouple Open Circuit
Reference Air Pump Fail
Reference Air Pump Overload
Alarm Log Fail
1
Are only available in dual probe mode
All of the items in this list are selected as the default setting. Any of these items can be disabled from the
common alarm by pressing the E
7.2.23 Accepted Alarm Relay Hold
Options: Enabled or Disabled
Default:
Enabled
When an Alarm Relay is configured to trigger on a specific alarm state, the relay will remain energised while
the alarm state is clear, and will de-energise when the alarm state is active. There are however two other
states in which the alarm may find itself where the function of the alarm relay may depend on the installation.
An alarm that has been acknowledged via the keypad, but is still present is classed as 'accepted', while an
alarm which has triggered, then the alarm state has cleared before it was acknowledged is classed as 'self-
cleared'. While in the 'accepted' state, the function of the alarm relay can be altered with this setting
Alarm state
No alarm condition
New alarm
All alarms accepted
Alarms self-cleared
To enable backward compatibility with the 1632 series transmitter, set this to Enabled.
7.2.24 Selecting the Correct Fuel
The 1732 transmitter can calculate several measurements that are based on the oxygen reading and the
temperature of the process gas. These calculations also require some details about the chemical makeup of
the fuel. The additional calculations are:
Oxygen deficiency
Combustibles
Carbon dioxide (maximum dry)
Combustion efficiency
Select the required fuel in Commissioning Menu function #54 by using the O
the E
button. The table of values in the next 6 functions will be updated for that fuel.
NTER
August 2018
1732 Oxygen Transmitter
Output 1 Fail
Output 2 Fail
Heater 1 SSR Fail
1
Heater 2 SSR Fail
Heater SSR Leakage
1
Probe 1 Filter Blocked
Probe 2 Filter Blocked
Gas 1 Calibration Error
Gas 2 Calibration Error
button, and they will then appear on the list in the other alarm relays.
NTER
Enabled
Closed circuit
Open circuit
Open circuit
Closed circuit
The volume of oxygen required to bring the combustion back to
stoichiometry
This theoretical scale is equivalent to a combustibles analyser
The calculated maximum level of CO
Requires a stack thermocouple and so is only available in single probe
mode
1
1
1
Disabled
Closed circuit
Open circuit
Closed circuit
Closed circuit
in the combustion gas
2
buttons and then press
PTION
Technical Manual
43
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