Dräger VarioGard Gebrauchsanweisung Seite 79

Transmitter
Weight
Dimensions with cable inlet
Cable entry
Operating voltage
Power input
Measurement specifications:
– CO transmitter
– O transmitter
2
– NO transmitter
– NH transmitter*
3
– NO transmitter
2
The measurement specifications of transmitters for other gas types can be found in the data sheet of the transmitter
concerned.
*
The accuracy of measurement for the sensor is given for the short-term presence of NH
Because of the electrochemical reaction in the sensor, its measurement sensitivity changes as exposure to NH
For 1000 ppm NH gas there may be an increase in the measuring signal of about 20 % or a reduction of about 10 % over a period of
3
30 minutes. For lower concentrations of NH
**
The measuring errors indicated apply for a calibration interval of:
12 months for CO and NO
6 months for O and NH .
2 3
Battery module
Type of protection, housing
Input voltage
Output voltage
Power consumption
Maximum charging time (lead storage batteries exhausted) < 48 hours
Cable inlet
Weight
Dimensions with cable inlet
VarioGard Relay Module
VarioGard Converter Module
Measuring range Display
resolution
0 ... 300 ppm ≤ 3 ppm
0 ... 25 % vol. ≤ 0.1% vol.
0 ... 50 ppm ≤ 1 ppm
0 ... 1200 ppm ≤ 10 ppm
0 ... 20 ppm ≤ 0.1 ppm
gas the percentage change in the measuring signal may be less.
3
approx. 0.4 kg
120 mm x 145 mm x 100 mm
M20 x 1.5; 6 mm to 12 mm
16 to 30 V DC
< 2 W
Measuring error**
(the larger value applies in each case)
≤ ± 0.4 % vol. or ≤ ± 10 % of the measured value
≤ ± 40 ppm or 10 % of the measured value
≤ ± 0.5 ppm or 10 % of the measured value
gas.
3
IP 32, EN 60 529
115 V / 230 V, 50 to 60 Hz
28 V DC, max. 1.2 A
< 15 VA
M20 x 1.5; 6 mm to 12 mm
Approx. 7 kg (with lead storage batteries)
190 mm x 245 mm x 125 mm (H x W x D)
see installation instructions 90 23 577
see installation instructions 90 23 578
Technical Data
≤ ± 9 ppm
≤ ± 5 ppm
gas concentration continues.
3
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