GasWatch 3 Single Gas Monitor
The GasWatch 3 is the world’s smallest and lightest single-gas monitor. Weighing just 1.6 ounces, its compact form affords great comfort and flexibility in how you choose to wear it. It can be worn on your wrist as a watch, or clipped into your breathing zone on your lapel, hard hat or other safety equipment with its alligator clip.
The 5 different GasWatch 3 models can protect you from oxygen deficiency [GW-3(O2)], exposure to carbon monoxide [GW-3(CO)] or exposure to hydrogen sulfide [GW-3(H2S)]. A hydrogen compensated model [GW-3(C-)] can protect those who work in steel mills, refineries or other environments where hydrogen is present from carbon monoxide exposure. The dual sensor model [GW-3(CX)] can simultaneously protect you from oxygen deficiency and carbon monoxide exposure.
A small, field-replaceable, coin-type lithium-ion battery gives the GasWatch 3 over 4,000 hours of continuous operation. The hydrogen compensated CO can operate up to 2,500 hours, and the dual sensor CO/O2 model will get up to 2,000 hours of continuous operation.
The great battery life coupled with a 3-year warranty* gives the GasWatch 3 tremendous value and a low cost of ownership.
GasWatch 3 Single Gas Monitor
| Model |
GW-3 (HS) Hydrogen Sulfide
|
GW-3 (CO) Carbon Monoxide
|
GW-3 (C-) H2 Compensated CO
|
GW-3 (CX) (Dual Sensor) |
GX-3 (O2) Oxygen
|
Detection
Principle
|
EC |
Dual EC |
Galvanic Cell |
Detection Range
(Increments)
|
0 ~ 30 ppm (0.1) 30 ~ 100 ppm (1)
|
0 ~ 300 ppm (1) |
0 ~ 25.0% Vol. (0.1) |
| Service Range |
100 ~ 200 ppm (1) |
310 ~ 2,000 ppm (10) |
25 ~ 40.0% Vol. (0.1) |
| Alarm Setpoints |
1st: 5.0 ppm
2nd: 30.0 ppm
3rd: 100.0 ppm
TWA: 1.0 ppm
STEL: 5.0 ppm
OVER: 200.0 ppm
|
1st: 25 ppm
2nd: 50 ppm
3rd: 1200 ppm
TWA: 25 ppm
STEL: 200 ppm
OVER: 2,000 ppm
|
L: 19.5% Vol.
LL: 18.0% Vol.
H: 23.5% Vol.
OVER: 40.0% Vol.
|
| Operating Temperature |
-20 °C to +50 °C (no sudden changes)
(Approx. 15-minute temporary use environment: -20 °C to +60 °C) [no sudden changes]
|
-20 °C to +50 °C (no sudden changes)
|
| Humidity Range |
10 to 90 %RH (no condensation)
(Approx. 15-minute temporary use environment: 0 to 95 %RH) [no condensation]
|
10 to 90 %RH (no condensation)
|
Continuous
Operating Time
|
Approx. 4,000 hours |
Approx. 2,500 hours |
Approx. 2,000 hours |
Approx. 4,000 hours |
| Sampling Method |
Diffusion Type |
| Types of Alarm |
Gas alarms: Three-step alarms, STEL alarm, TWA alarm, OVER alarm
Fault alarms: Sensor connection / disconnection, low battery level, calibration failure, clock abnormality, system abnormality |
| Alarm Indications |
Auto-reset or self latching Lamp flashing, intermittent buzzer sounding, gas concentration readout blinking, vibration |
| Power Source |
CR2450 coin-type lithium ion battery |
| Case Material |
Intrisically safe explosion-proof construction (Ex ia IIC T4 Ga) , IP 66/68 (6.6ft, 1h) (2m, 1h) |
| Approvals |
ATEX, IECEx, CSA |
| Dimension & Weight |
2.5″ W x 1.6″ H x .86″ D (Approx 63 mm W x 42mm H x 22mm D) , 1.6 ounces (approx. 45g) |
| Functions |
Data logger, vibration, STEL alarm, TWA alarm, quick calibration, peak value display, temperature display |
Standard Accessories
|
CR2450 coin-type lithium-ion battery, Spring pins (used to mount accessories on to the rear face), Watch band, Alligator clip
|
Optional Accessories
|
Heat-resistant case, Dust filter, CF-1821 filter (for CO sensor), CF-A13i-1 humidity control filter (for H2S sensor), Calibration adapter |
GasWatch 3 Single Gas Monitor
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