ENMET QUADRANT - Manual (Page 17)

QUADRANT ENMET Corporation
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5.2 Program
To program the QUADRANT, enter the program menu (see maintenance menu flow
chart on page 3). Select the channel to be programmed. Place the channel on or off
mode. The gas displayed on the combustible channel can be selected in this section (see
also combustible display). At this point the alarm point can also be set, or use the default
alarm point programmed in the instrument.
5.3 Calibration
5.3.1 To calibrate the QUADRANT
N OTE : Always calibrate the Combustible sensor first.
Enter the calibration menu (see maintenance menu flow chart; maintenance functions on
page 3). The program is set to use the calibration gases supplied by ENMET and listed in
section 6, below. Assure that the correct calibration gas is available. Connect the
calibration adapter to the cylinder of gas and the QUADRANT calibration cover. Select
the channel to be calibrated and enter. Verify the calibration gas value and enter. Verify
the zero reading and enter. Attach calibration cover to instrument (aligning notch in
cover with horn opening) and open valve so gas flows gently over sensor. Wait for
reading to stabilize. Pressing the Enter button accepts the calibration. Pressing the –
button returns to the beginning of calibration menu without calibrating the instrument.
C AUTION : Use only calibration gas during calibration, see Section 6.0. Do Not use field test
gas for calibration.
W ARNING : Do not enter the calibration menu and attempt a calibration without a supply
of calibration gas.
5.3.2 Escape Calibration
Calibration of a channel, other than a oxygen channel, without calibration gas results in
an inoperative channel; and displays “GAS used” for that channel.
If in the calibration menu, and calibration gas is not available:
•At the zero stabilization prompt, 0:XXX, or the span stabilization prompt, S:XXX, press
the – button; the display returns to “calib.”
•At the span stabilization prompt, when the
ENTER button is pressed, “GAS used” is
displayed. Do not press the enter button again, instead press the – button, the display
returns to “calib.”
If at “GAS used”, the
ENTER
button is pressed, the “GAS used” fault alarm is on
continuously for that channel. Disable the channel if it is necessary to use the other
channels; note that there is no detection capability for the disabled channel. Obtain the
calibration gas, enable the channel, and go through the sensor replacement procedure,
section 5.4, without actually changing the sensor; note that this procedure includes
recalibration.