27
13. Specifications
Principle of
detection
Galvanic cell
Sampling method Diffusion type
Detection gas
O2 (Oxygen)
Detection range
0 to 25 vol%
Gas
concentration
display
Four-digit digital LED display
Alarm set value
18 vol%
Alarm accuracy
±
1.0 vol% of the displayed value
Alarm delay
5 seconds or less to reach 18vol% by coming into contact with oxygen gas having a
concentration of 10vol%. (at 20 +/- 2
°
C)
Warning display
•
Gas alarm (one stage only)
Red LED lamp flashes
•
Trouble alarm (sensor disconnection, sensor zero drop, power supply voltage error,
or internal EEPROM communication error)
Yellow LED lamp flashes
External output
Gas concentration analog signal
•
4 to 20 mA DC (common to the negative side of power supply)
•
0.9 mA DC or less at the time of Trouble alarm.
•
Make sure that the load resistance of the analog signal is less than 300 ohm
including the wiring resistance.
Gas alarm contact (one stage only)
•
1a no-voltage contact output/Non-latching
•
Rated load: 0.5 A at 250 VAC or 0.5 A at 30 VDC (resistance load)
Explosion-proof
performance
Exd II BT5
Degree of
protection
IP65 (interior)
Applicable cable
Cable outer diameter (10 to 13 mm)
•
In the case of a 5-conductor cable (for power supply, gas concentration analog
signal, and gas alarm contact): CVV-S 1.25 mm
2
.
•
In the case of a 3-conductor cable (for power supply and gas concentration analog
signal) CVV-S 2 mm
2
Operating
temperature and
humidity ranges
•
Temperature: 0
°
C to 40
°
C
•
Humidity 30% to 85%RH
(No radical temperature or humidity changes and no condensation)
Power supply
24 VDC
±
20%
Power
consumption
1.2 W max.
Size
158 (W) x 116 (H) x 68 (D) mm (excluding protruding parts)
Weight
Approx. 1.3 kg
Mounting method Wall mounting
The above specifications are subject to change without notice.
If your specifications are nonstandard, refer to the delivery specifications.
