Rev.2.1 08/03/049
Refer to Figure 5 before proceeding
c. Channel and Gas Type - See Figure 11 - Initial factory setting chart for channel set-up
information. To change, select JP-4, push ZERO and sequence to channel (1 thru 6) desired,
push MAN to initiate gas type menu, push ZERO and scroll to gas type desired (Note: NONE
selected will skip channel). Press MAN to initiate sensor type menu, push ZERO to select
sensor type. Proceed to next channel and follow same process. When finished, remove
jumper from JP-4. This procedure is only used when adding/deleting or changing sensor or
IR Modules
d. TWA Integration, (Optional). Haloguard
calculates an 8 hr. TLV-TWA,displays this
value on LCD, activates LO alarm LED and relay if preprogrammed PPM value is exceeded.
(Must be powered up for 8 hrs. to build database before operating).
e. Relay Latch Setup -Recommended factory setting is Unlatched Mode; the alarm LEDs and
relays will return to a normal status when gas concentration goes below alarm set point.
To select Latched Mode place jumper on JP-8. Latch mode requires manual RESET for all
alarms. Press RESET button to release alarm (Note: Alarm will only be disengaged for 20
minutes unless condition is corrected).
f. Audible Alarm -Jumper on JP-9 is factory installed to activate alarm circuit. To disable
alarm remove JP-9 jumper.
**WARNING**
ANALOG OUTPUT IS A DRIVEN SIGNAL, DO NOT CONNECT ANY WIRE
WITH VOLTAGE OR CURRENT TO ANALOG OUTPUT TERMINALS
9. Analog Output (Optional) - Connect Analog outputs AN 1 thru AN4 ( (+) SIG and (-) GND if
supplied) where indicated. (See Figure 12)
a. Trim optional analog outputs by pushing TEST button and turning potentiometers on AN 1
thru AN-4 (see Figure 2 - Upper Circuit Board) until output measures 5.0 or 10.0 VDC as
required. Read warning on wiring diagram (Figure 12) regarding connection of analog
output.
10. LCD display adjustment changes brightness of LCD - Adjust potentiometer (See Figure 2 -
Upper Circuit Board) as required.
11. For 20 minutes after power up all alarm relays and alarms are automatically disabled. During
this period, RESET LED will be lit. If power is disrupted, RESET mode will be automatic to
protect against false alarms.
CALIBRATION
Haloguard II/IR monitors are factory calibrated to the gas of interest; field recalibration is not
required for operation in typical machine room environments during the first twelve months of
operation unless drift exceeds more than 5ppm in a 30 day period.
For those who wish to check the factory calibration an optional Digital Calibrator and Span Gas Kit
is available. Instructions for use are included with kit
