XP Series Personal Gas Detector
7
3. Display Features
Battery
Fail Icon
Self-Test Pass Icon
Level 1: O
2
and Toxics
Level 2: Toxics
Level 2: O
2
STEL/TWA Alarm
Cal. Status Icon
Low Peak (O
2
), High Peak (Toxics)
Gas Concentration and Units
Alarm Icon
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 Level 1 Alarm Level 2 Alarm STEL Alarm TWA Alarm
H
2
S 10 ppm 15 ppm 15 ppm 10 ppm
CO 35 ppm 100 ppm 400 ppm 35 ppm
O
2
23.5% v/v 19.5% v/v N/A N/A
For other toxic gases, see Section 22 Other Gases.
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.