QRAE II User Guide
Page 6
1 General Information
QRAE II
is a programmable multi-gas monitor, available in pumped and diffusion
models, designed to provide continuous exposure monitoring of oxygen, hydrogen
sulfide, carbon monoxide and combustible gases for workers in hazardous environments.
It monitors with the following types of sensors:
1.
Combustible gases are monitored with catalytic bead sensors.
2.
Hydrogen sulfide (or sulfur dioxide) and carbon monoxide are monitored with
electrochemical sensors.
3.
Oxygen is monitored with a solid polymer electrolyte (SPE) sensor.
1.1
Key Features
Lightweight and Compact
9 oz (250 g) diffusion model, 12 oz (350 g), pump version, handheld size.
Dependable and Accurate
QRAE II diffusion model: 14 hours of monitoring with microcontroller.
QRAE II Pump model: minimum 10 hours on Li-Ion battery, and 8 hours on
alkaline battery
User Friendly
Menu-driven, intuitive end-use operation.
Programmable Alarm Thresholds
Audio buzzer and flashing display alarm.
Standard configuration includes CO, H
2
S, LEL, and O
2
sensors
Replaceable, rechargeable Li-Ion battery
Large, easy-to-read display
Datalogging with large memory
Visual alarm with bright red flashing LEDs
Loud audible alarm (95dB at 30 cm)
Vibration alarm
Rugged weather-resistant composite case
Diffusion model and pump model
