Dräger VarioGard IR EX, Инструкция по эксплуатации, Страница: 38 / 43

Seite 38
Technical Data
Gas Type Methane Methane
Without power supply With power supply
Dimensions
(WxHxD,mm) 120x145x100 120x145x100
Weight 600 gr. 2 kg
Operating voltage 12 .. 30 VDC 230, 115 VAC +/- 10%,
50 / 60 Hz
Factory settings:
Pre alarm: 20% LEL;
Main alarm: 40% LEL Factory settings:
Pre alarm: 20% LEL;
Main alarm: 40% LEL Alarm thresholds
Adjustment range:
Pre alarm: 0-99% LEL;
Main alarm: 0-99% LEL Adjustment range:
Pre alarm: 0-99% LEL;
Main alarm: 0-99% LEL
Alarm conditions 0%LEL < A1 < A2 <
99%LEL 0%LEL < A1 < A2 <
99%LEL
Display LCD, 2-line dot matrix
display,
back-lighting LCD, 2-line dot matrix
display,
back-lighting
Alarm functions
relay Only via controller 2 relays (5A 230VAC)
optical Only via controller External via relay possible
audible Only via controller External via relay possible
acknowledgement Controller Controller
Sensor type NDIR, temperature compensated infrared sensor, 2-
beam measuring method
Measuring range 0 – 99% LEL
Response time (T90) < 40 sec.
Resolution +/- 1% LEL Complying with EN50194
MTBF 10 years
Operating temperature -30 to + 50°C
Storage temperature -30 to +60 °C
Relative humidity 0 to 99% rel. humidity, no condensation
Air pressure 900 – 1100 hPa
Connection cable E.g. NYM 3 x 0,75 mm
2
Housing, degree of
protection IP54 (housing)
Approvals
CE complying with 73/23 EEC, 89/336 EEC