For daily check and safety in plants, tank, manhole and tunnel construction.
- Convert to 32 types gas’s concentration
- Robust design
- Wide range models
- Up to five combustible gases can be set as target gas (option)
- Selectable power supply: alkaline AA batteries / rechargeable nickel metal hydride AA batteries
- Timer and stopwatch function
Sampling Method |
Extractive |
Alarm Method |
Gas Alarm |
Beeping with flashing red light and AL icon on the LCD |
Device Error |
Beeping with flashing yellow light and error message on the LCD |
Power Source |
・Non-rechargeable alkaline AA battery x4: Toshiba LR6, Panasonic LR6X, Duracell MN1500, Energizer E91 or Varta 4106
・Rechargeable nickel metal hydride AA battery x4: New Cosmos HR-3UTG |
Operating Temperature/Humidity |
-20 to +50℃ 95%RH. No condensation |
Compliance*1 |
ATEX: Ex II 1G Ex ia da IIC T4 Ga*1
IECEx: Ex ia da IIC T4 Ga*1
CE (ATEX, RoHS and RE directives) |
Ingress Protection |
IP67 |
Main Features |
Self-diagnosis (sensor error), Zero adjustment, Battery level indication, Flashlight, Peak-hold, LCD backlight, Audio alarm muting during gas alarm, Time indication, Alarm test, Alarm volume change, Audio muting |
Dimensions |
W91 x H164 x D44mm |
Mass |
Approx. 460g (including batteries) |
Accessaries |
Gas sampling tube(1m), Shoulder strap, Drain filter, Filter element, Alkaline AA batteries(or Rechargeable nickel metal hydride AA batteries) x 4, Screen protector film x 3 |
Combustible Gas Detector
Model |
SDE-3360II-W |
SDE-3360II |
SDE-3310II |
SDE-3340II |
Target Gas |
Combustible gas/Solvent vapor |
Combustible gas/Inert gas |
Detection Principle |
Catalytic |
Thermal conductivity |
Measure Range
(Reference Indication) |
0.0–100.0%LEL (100.1–110.0%LEL)
Enable to display in ppm. |
0–5000ppm or
0–10000ppm
(5001–5500ppm or 10001–11000ppm) |
0–100%LEL
(100.1–110.0%LEL) |
0-100.0vol% |
Accuracy*2 |
≤ 1000ppm : ±100ppm
1001ppm < n ≤10000ppm :
±500ppm
Other than above : ±5%F.S. |
≤10%F.S.: ±2.5%F.S.
>10%F.S.: ±5%F.S. |
±5%F.S.. |
±5%F.S.. |
Resolution |
0.1%LEL or 1ppm |
1ppm |
0.1%LEL |
0.1vol% |
Alarm Set Value |
20%LEL |
250ppm or 500ppm |
20%LEL |
50vol% |
Response Time |
T90: 30 seconds |
T90: 60 seconds |
Continuous Operation Time*3 |
Approx. 15 hours |
Approx. 100 hours |
*1 When using alkaline AA batteries. Please contact us for full information.
*2 Under an identical measurement condition.
*3 At 25℃, with no alarm and backlight off. The time varies according to the circumstances, condition of use, storage period, battery manufacturer, etc.