MSA altair 4 - 5 Technical Specifications;Certifications; Technical Specifications

TECHNICAL SPECIFICATIONS/CERTIFICATIONS MSA
44
ALTAIR 4 - Operating Manual
5 Technical Specifications/Certifications
5.1 Technical Specifications
Weight
0.300 lb (instrument with battery and clip)
Dimensions
(L x W x H)
4.4 x 3.00 x 1.37 inches – without fastening clip
Alarms
Four LEDs, an audible alarm and a vibrating alarm
Volume of
audible alarm
95 dB 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 77°F (25 °C)
Charging time
≤ 4 hours
The maximum safe area charging voltage
Um = 6.7 Volts D.C.
Temperature
range
-4 °F to122 °F (-20 °C to 50 °C) operating
50 °F to 95 °F (10 °C to 35 °C) while charging battery
Humidity
range
15 % – 90 % relative humidity, non-condensing,
5 % – 95 % RH intermittent
Atmospheric
pressure range
11.6 to 17.4 PSIA (800 kPA to 1200 kPA)
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.
Measuring
range
Combustible O
2
CO H
2
S
0-100% LEL
0-5.00% CH4
0-25 % Vol. 0-999 ppm 0-200 ppm