GASMAX II + GDS-IR Operation & Maintenance Manual, Revision 1.1
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INITIAL SETUP
When power is applied to the GASMAX II, the screen will
show ‘G M II”. G
-IR sensors may initially
indicate off-scale high or low values, but should quickly return to zero within a few minutes if no target
gas is present. During this warm-up delay period, the 4-20mA output is held at 4.0 mA to eliminate false
alarms in any receiving devices.
GASMAX USER INTERFACE
The GASMAX II display is shown below. There are four magnetic switches on the face of the GASMAX II,
arranged in a quadrant around the LCD display; these are labeled NEXT, EDIT, DOWN/CAL and UP.
To
activate, or “press” a magnetic switch, swipe the magnetic wand near the switch.
For the balance of this
manual, the term “press” will be used to describe activation of any key via the magnetic wand.
Figure 4-1: Gasmax Single Channel Display
Pressing the NEXT key causes the GASMAX display to switch display screens
. In single channel mode, the
display will switch between DATA and TREND. In dual channel systems, the sequence will be: DATA 1,
DATA 2, TREND 1, TREND 2, DUAL CHANNEL, followed by DATA 1.
Figure 4-2: Gasmax Dual Channel Display
M E A S U R E M E N T N A M E
12
% L E L
P
E
E I
I
1 2 % L E L
P
E
E I
I
Channel
“ E ”
“ E ”
“ E ”
“ E ”
Channel
Channel rend
Channel rend
ual Channel