RKI Instruments Gas Tracer - Manual (Page 203)

Gas Tracer Operator’s Manual Preparing for Calibration or Bump Testing • 195
Normal Mode Only” on page 20 or “Turning On the Gas Tracer in
Normal Mode With All Modes Active” on page 26. Use the sample
hose and probe.
3. With the unit on, perform a fresh air adjustment by pressing and
holding the AIR▲ button. The display prompts you to hold the
AIR▲ button.
4. Continue to hold the AIR▲ button until the display prompts you to
release it. The Gas Tracer will count down from 8 as it sets the fresh
air reading for all channels. If the combustible channel is set as
%LEL only or vol% only, there is no countdown period. The fresh
air reading is set immediately.
Filling the Gas Bag
Use the following procedure to fill the gas bag with either zero air or
calibration gas.
1. Slide the tubing clamp onto the tubing and connect the tubing onto
the sample bag’s inlet. Leave the clamp unclamped for now.
2. Connect the other end of the tubing to the regulator’s or
dispensing valve’s hose barb fitting.
NOTE: If you are filling the gas bag with ppm calibration gas, do not
use the 6 inch humidifier tube at this point.
3. Fill the gas collection bag by screwing the fixed flow regulator onto
the calibration cylinder or by screwing the dispensing valve onto
the calibration cylinder and turning the knob counterclockwise.
NOTE: If the regulator has no on/off knob, then gas will begin to
flow at 0.5 LPM as soon as the regulator is connected to the
cylinder.
4. Allow the gas to dispense until the gas collection bag is a little over
half full.
5. If a fixed flow regulator without a knob is used, disconnect it from
AIr
CAL
MAINTENANCE
HOLD AIR