Model Name

OX-01

CO-01

HS-01

GP-01

Gas Detected

Oxygen (O2)

Carbon Monoxide (CO)

Hydrogen Sulfide (H2S)

Combustible gas

Detection
Principle

Galvanic cell

electrochemical

Catalytic combustion

Detection
Range

0 – 40%vol.
(0.1%vol.)

0 – 500 ppm
(1 ppm)

0 – 100 ppm
(0.5 ppm)

0 – * LEL
(1% LEL Increments)

Alarm Set Points

Low 19.5%vol.
High 23.5%vol.
Over 40.0%vol.

1st 25 ppm
2nd 50 ppm
TWA 25 ppm
S 200 ppm
Over 500 ppm

1st 10 ppm
2nd 30 ppm
TWA 10 ppm
S 15 ppm
Over 100 ppm

1st alarm 10% LEL
2nd alarm 50% LEL
Over alarm * LEL

Types of Alarms

Gas alarms: 1st and 2nd (user adjustable), OVER alarm, S and TWA
Trouble alarms: Sensor connection, low battery circuit failure, and calibration range error

Alarm Indication

Gas alarm: Flashing LED's, intermittent buzzer, flashing gas value, and vibration
Trouble alarm: Flashing LED's, intermittent buzzer, and display of error message
S & TWA alarms: Flashing LED's, intermittent buzzer, flashing gas value, and vibration

Preset Alarms
(User Adjustable)

Diffusion

Response
Time

T90 in 30 seconds
(alarms within 5
seconds when
exposed to 12% O2)

T90 in 30 seconds

Accuracy

+/- 0.5%vol.

+/- 5 ppm
(up to 150 ppm)

+/- 1.5 ppm (up to 30 ppm)

+/- 5% of full scale

Power

Alkaline dry cell (2-AAA size)

Alkaline dry cell
Ni-Cad battery pack

Continuous
Operation

Alkaline dry cell: more than 3,000 hours
(at 25°C, no backlight)

Alkaline: 16 hours
Ni-Cad: 8 hours

Safety

CSA classified, "C/US", as intrinsically safe. Class I, Div. 1. Group A, B, C & D

Dimension &
Weight

1.4”W x 4.1”H x 0.8”D, (35 x 105 x 20mm); 3.5 ounces (100g)

Display

7-segment + symbol on digital LCD, auto backlighting during alarm

Special Functions

Manual backlight for LCD (automatically lit during alarm)
Peak hold, S & TWA

Operating Temp.
& Humidity

-4°F ~ 122°F (-20°C ~ 50°C);
Humidity below 90% RH (non-condensing)

Standard
Accessories

Rubber protective boots
Belt clip or alligator clip
Wrist strap
Alkaline batteries

Optional
Accessories

Calibration cap (adapter)
Charger unit
Calibration kit
Ni-Cad battery pack

Warranty

Two years material and workmanship