MSA altair 4 Service Manual

MSATechnical Data
ALTAIR 4
24
GB
7 Technical Data
7.1 Technical Specifications
Weight 210 g [instrument with battery and clip]
Dimensions
[L x W x H]
112 x 76 x 35 mm – without fastening clip
Alarms Four LEDs, an audible alarm and a vibrating alarm
Volume of
audible alarm
95 dBA at 30 cm typical
Display LCD display
Battery type Rechargeable Li polymer battery.
Li polymer battery must not be charged in Ex area.
Instrument run
time
16 hours at 25 °C [77 °F]
Charging time ≥ 4 hours
The maximum safe area charging voltage Um = 6.7 VDC
Warm up time 2 min
Temperature
range
-20 °C to 50 °C [-4 °F to122 °F] operating
10 °C to 35 °C [50 °F to 95 °F] while charging battery
Humidity range 15 % – 90 % relative humidity, non-condensing,
5 % – 95 % RH intermittent
Atmospheric
pressure range
800 kPA to 1200 kPA [11.6 to 17.4 PSIA]
Ingress
protection
IP 67
Measuring
methods
Combustible gases: Catalytic sensor
Oxygen: Electrochemical sensor
Toxic gases: Electrochemical sensor
Warranty Standard two years. Extended options available.
See full warranty for specific limitations.
Combustible O
2
CO H
2
S
Measuring
range
0-100% LEL
0-5.00% CH
4
0-25 % Vol. 0-999 ppm
[0-999 mg/m³]
0-200 ppm
[0-284 mg/m³]

MSA altair 4 Specifications

General

Operating Temperature	-20°C to 50°C (-4°F to 122°F)
Ingress Protection	IP67
Type	Multi-gas Detector
Gases Detected	LEL, O2, CO, H2S
Display	LCD
Weight	Approx. 220g (with battery)
Sensor Type	Electrochemical (for H2S, CO, and O2); Catalytic Bead (for LEL)
Alarm Type	Audible, Visual, Vibrating
Detection Range	O2: 0-30% vol, LEL: 0-100% LEL, CO: 0-999 ppm, H2S: 0-500 ppm
Humidity Range	15% to 90% RH non-condensing
Certifications	UL, CSA, ATEX, IECEx