Detection Principle |
Galvanic cell |
Gas Detected |
Oxygen (O2) |
Detection Range |
0 ~ 25 vol% |
Display Resolution |
0.1 vol% |
Sampling Method |
Diffusion or remote sampling method with optional sensor extender cable |
Indication Accuracy* |
Within ±0.7 vol% |
Response Time* |
90% Response within 30 seconds (T90) |
Alarm Levels |
Two preset alarms (L-LL), alarm 1 = 19.5% vol, alarm 2 = 18.0% vol |
Display of Alarm |
1st gas alarm: gas concentration reading blinks or orange light, flashing AL1 light or orange light, buzzer 2nd gas alarm: gas concentration reading blinks or red light, flashing AL2 light or red light, buzzer |
Alarm Logic |
Latching or Non-latching (including trouble alarm) |
Alarm Contact |
Dry contact, Form A or Form B, Form A standard Factory Setting, normally open (closed in ALARM) |
Display |
Digital LCD (3 digits, 7 segments / Green, Orange, Red) (For Alkaline battery version, the back light will be OFF during normal operation) |
Trouble Alarm / Self-Diagnosis |
System trouble / sensor connection trouble |
Display of Trouble Alarm |
Buzzer / flashing of red error message |
Relay Contact Rating |
125VAC, 1A or 30VDC, 1A (Resistive load) |
Output Signal |
4 ~ 20mA (Non-isolated, Resistive load under 300Ω) or 0 – 1VDC (Non-isolated) *only for 0 – 1VDC Alkaline battery specification |
Extender Cable |
Extender cable with remote box (3m, 5m, 10m or 20m lengths available) |
Power Sources |
24VDC±10%, or AA alkaline battery (2 each) |
Power Consumption |
AC specification: MAX 3.5VA, DC specification: MAX 2W |
Continuous Operation (for Alkaline Battery version) |
1 year (no alarm, no indication) for alkaline battery option |
Operating Temperature |
-17°C ~ 40°C |
Operating Humidity |
0 – 90%RH (non-condensing) |
Mounting Equipment |
Wall mounting type (by using accessory mounting plate or mount at one switch box) Cable inlet: Up, down and left/right, or rear side |
Dimension |
Body: approx. 80mm (W) x 120mm (H) x 35.5mm (D) |
Weight |
DC specification: approx. 180g, Alkaline battery specification: approx. 230g |