Honeywell Sensepoint XCD RFD - Page 45

Sensepoint XCD RFD Technical Manual SPXCDHMRFEN Issue 4_08-2016
45
Ir-5* CO2 CO2
Ir-7 Methane mEt
Ir-8* Propane ProP
*Contact Honeywell Analytics for availability
Gas selection is dependent on the type of sensor attached to the XCD RFD. If Ir-7 sensor
is attached, then a user can only select ‘mEt’ gas respectively. But when Cb-3/Cb-4 sensor
is attached to the XCD RFD, a user can select the gas from Str1 (1*) to Str8 (8*). For more
information on star rating, please refer to section 19.2.
The current conguration of the XCD RFD is displayed and by using the ‘

’ switch to enter
“SEL gAS” menu. To select a ammable gas, use ‘

’ to move through the list, and then
use ‘

’ to make the selection or abort function to discard the selection and return to menu
mode.
If type of gas is changed, calibration prompt will appear to ask if you want to perform
calibration.
...
Diagram 16: Gas Selection
CAUTION
The 4-20mA analogue output signal will remain INHIBITED at 2mA (default setting) while the
XCD RFD remains in Conguration Mode. However, the ALARM and FAULT RELAYS remain
Active.
Changing the conguration of the Sensor Type or the Gas Star Rating for catalytic sensors
may result in temporary activation of the ALARM or FAULT RELAYS.
Should this occur, then recalibrating the sensor will return the XCD RFD to normal condition
and reset the relays.
As a precaution, please take necessary action to manually inhibit any external actuator or
alarm devices that are connected to the XCD RFD Alarm/Fault Relays to prevent unnecessary
activation during commissioning or reconguration of the XCD RFD gas detector.
For CSA Certied applications, use CB-6 calibrated only to Methane.