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. Display Features
J
A
B
The XP LCD has a backlight that will operate automatically whenever an alarm occurs, and also whenever
any button is pressed.
4. Gas Alarms
The XP has two levels of instantaneous gas alarms, of which the level 2 alarm is more urgent than the
level 1 alarm. XP also has a 15 minute STEL alarm and an 8 hour TWA alarm. The alarm set points can
be set by the user on the detector. It is supplied with the following default alarm set points:
Gas Type
H
S
2
CO
O
2
For other toxic gases, see Section 22 Other Gases.
XP Series Personal Gas Detector
D
A.
C
B.
E
C.
F
D.
G
H
E.
F.
I
G.
H.
I.
J.
Level 1 Alarm
Level 2 Alarm
10 ppm
15 ppm
35 ppm
100 ppm
23.5% v/v
19.5% v/v
Battery
Fail Icon
Self-Test Pass Icon
Level 1: O
and Toxics
2
Level 2: Toxics
Level 2: O
2
STEL/TWA Alarm
Cal. Status Icon
Low Peak (O
), High Peak (Toxics)
2
Gas Concentration and Units
Alarm Icon
STEL Alarm
15 ppm
400 ppm
N/A
TWA Alarm
10 ppm
35 ppm
N/A
7
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