RKI Instruments EAGLE 2 Manual - Manual (Page 217)

EAGLE 2 Operator’s Manual TC Calibration • 207
1. Use the DISPLAY ADJUST NO button to enter Display Mode and scroll
to the Catalytic (LEL) Sensor screen. The current setting will be flashing.
The screen below indicates the warning that appears when a TC sensor
and a catalytic LEL sensor are both installed. Since the TC sensor only
reads in %volume, if the catalytic LEL sensor is disabled, there will be no
alarms for the LEL range.
2. Use the AIR ▲ YES or RANGE ▼ SHIFT button to toggle to the desired
setting.
If set to DISABLED, the gas reading for the catalytic LEL channel will
be replaced by dashes (---).
3. Press and release POWER ENTER RESET to save the setting and return
to the main menu.
4. Use the DISPLAY ADJUST NO button to scroll through the rest of
Display Mode and enter Normal Operation.
TC Calibration
A TC channel can be calibrated using the auto calibration method or the
single calibration method. To calibrate a TC channel using the single
calibration method, see “Calibrating Using the Single Calibration Method”
on page 64 and follow the instructions for calibrating a single channel. If
your instrument is a multi-channel instrument that includes one or more TC
channels, RKI Instruments, Inc. recommends using the auto calibration
method for convenience. The calibration instructions below show a 5 channel
instrument which has the four standard channels, LEL/oxygen/H
2
S/CO, and
a TC channel configured for 0-100 %vol CH
4
. To use the auto calibration
method to calibrate a multi-channel instrument that includes a TC channel,
do the following:
1. See “Calibration Supplies and Equipment” on page 56 for a description
of the necessary calibration supplies. In addition to an appropriate multi-
gas cylinder that is used to calibrate any active standard channels, you
will also need a cylinder to calibrate the TC channel. See Table 21 on
page 222 for available cylinders. Make sure your calibration cylinder is
CAT (LEL) SENSOR
* * * WARNING * * *
NO LEL ALARMS IF
CAT (LEL) IS DISABLED
ENABLED