Model Name
(Part #) |
GW-2X
72-0007RK |
GW-2H
73-0041RK |
GW-2C
73-0040RK |
Measuring
Gas |
Oxygen (O2) |
Hydrogen Sulfide
(H2S) |
Carbon Monoxide (CO) |
Detection
Principle |
Galvanic cell |
Electrochemical |
| Sensor Type |
OS-BM2 |
ES-1827 |
ES-1821 |
Measuring
Range
(Increments) |
0 - 40.0% vol.
(0.1% vol.) |
0 - 100.0 ppm
(0.5 ppm) |
0 - 500 ppm
(1 ppm) |
| Accuracy Statement |
± 0.5% of O2 |
± 5% of reading or
± 2 ppm H2S
(whichever is greater) |
± 5% of reading or
± 5 ppm CO
(whichever is greater) |
Alarm Points
(Factory Set) |
Low - 19.5% vol.
High - 23.5% vol.
Over - 40.0% vol. |
1st - 10.0 ppm
2nd - 30.0 ppm
TWA - 10.0 ppm
STEL - 15.0 ppm
Over - 100.0 ppm |
1st - 25 ppm
2nd - 50 ppm
TWA - 25 ppm
STEL - 200 ppm
Over - 500 ppm |
| Alarm Types |
Gas alarm: 2 step alarm, STEL, TWA, Over alarm
Trouble alarm: sensor connection, low battery, circuit error
Calibration range over alarm |
| Alarm Indication |
Gas alarm: flashing light, intermittent buzzer and pulsing vibration
Trouble alarm: flashing light, intermittent buzzer and trouble type displayed |
Sampling
Method |
Diffusion |
| Response Time |
T90 in 20 seconds |
T90 in 30 seconds |
T90 in 30 seconds |
| Accuracy |
+/- 0.5% |
+/- 1.5 ppm
(up to 30 ppm) |
+/- 5 ppm
(up to 150 ppm) |
| Power Source |
One coin type lithium battery (CR 2450) |
Continuous
Operation |
Approximately 3,000 hours with no alarms or backlighting
(about 1 year of normal use) |
| Safety Rating |
CSA classified, “C/US”, as intrinsically safe. Class I, Division 1, Groups A, B, C and D. Class I, Zone 0, Group IIC. Temperature code T4. |
Display
Method |
Digital LCD with auto back light
|
Dimensions
& Weight |
2.5"(w) x 1.7"(h) x 0.9"(d) / 63.5 mm(w) x 43 mm(h) x 23 mm(d)
2 ounces / 60 grams |
Operating
Temp
& Humidity |
-20 ~ 40°C, below 85% RH (non-condensing) |
Dimensions &
Weight |
71.(w) x 84(h) x 29.5(d) mm, 135 g
2.81”(w) x 3.31”(h) x 1.16”(d), 4.76 oz
|
| Features |
LCD manual back light (automatic lighting during alarm)
STEL, TWA function
Peak hold
Time indication |
Attachment
Choice |
Watchband, alligator clip, belt clip, and hard hat clip |
| Warranty |
2 years material & workmanship |