6
MODEL 5700
2. Auxiliary Power Jack
A 2.5 mm pin jack is located near the bottom for operating the instrument from
an auxiliary 12 V battery or from a Continuous Operation Adapter (COA). An
auxiliary battery will extend the time of operation considerably, and the COA will
power the instrument as long as power is supplied to it. The outer shell of the
jack is grounded to the case and is negative.
WARNING:
THE INTRINSIC SAFETY OF THE INSTRUMENT IS VOIDED WHEN P/N
80247 CONTINUOUS OPERATING ADAPTER OR P/N 80123 12 VDC ADAPTER IS IN
USE.
III. OPERATION
A. PRELIMINARY
1. Turn instrument on and allow about 5 minutes to stabilize. Verify that the amber
LOW BATTERY light is off. (See MAINTENANCE, V.A.)
2. Push up and hold switch in the TEST position.
a) The red ALARM light will come on verifying the CO alarm circuit
operation.
b) The amber LOW BATTERY light will also come on, verifying the low
battery detection circuit.
c) Green NORMAL light will blink several times, then come on steady
verifying continuity of the detector circuits.
d) The buzzer will sound and the REM ALARM jack will be energized.
e) The display will show an upscale reading.
f) Release the switch. Indicators will return to normal and display may first
show a negative indication (-XX), then return close to 00.
3. Remove sample inlet tube from sample metering valve outlet fitting and introduce
a sample of zero air or nitrogen, free of CO and interfering gases, to the sample
inlet tube. The sample flow should be between 0.5 and 1.5 SCFH.
4. Verify that the green NORMAL light is on, the red ALARM light is flickering
about once a second and the display is showing 00 (zero), (see Calibration and
Adjustment, IV.A).
To Next Page
Loading...