Jesco GW 601, Operating Instructions Manual

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Technical data | Operating Manual GW 601 | 9
Storage temperature -25 … +60 °C
Air humidity 15 … 90 % rH, non-condensing
Transmitter
Measuring gas Chlorine (Cl
2
) Chlorine dioxide (Cl
2
) Ozone (O
3
)
Measuring range 0 ... 10 ppm 0 ... 1 ppm
or 0 … 2 ppm 0 ... 1 ppm
or 0 … 2 ppm
Measuring principle Electro-chemical cell. Two or more electrodes arranged in an electrolyte.
An electro-chemical reaction takes place at the electrode. It generates
an electrical current which is proportional to the concentration in the
measuring gas.
Power-up phase 60 s constant current of 0.8 mA
Reaction time approx. 30 s
Stabilisation time 60 min (90%), 24 h (99%)
Supply voltage 24 ± 6 V DC
Power consumption 40 mA / 1 W
Measuring signal 4 … 20 mA, linear, max. working resistance 500 Ω
4 mA = zero point, 20 mA = measuring range limit
Dimensions (H x W x D) 126 x 82 x 60 mm
Housing material Cast aluminium (painted) / PTFE, high frequency shielded
Protection class IP 54 (except for gas inlet)
Weight approx. 0.5 kg
Cable entry point M16 x 1.5 (Cable diameter 59 mm)
Cable 3-wire, 0.8 mm 2 , shielded, core resistance 18 Ω, max. 1000 m
Ambient temperature -10 … +45 °C
Storage temperature -20 … +45 °C
Air humidity 15 … 90 % rH, non-condensing
Air pressure 900 ... 1100 hPa
Service life 2 years, depending on the operating conditions
Self-monitoring If an error is detected during the automatic checks, the output current
is set to 1.1 mA. The yellow LED indicates a fault on the GW 601 gas
warning device.
IMPORTANT!
Avoid prolonged operation in dry atmospheres. Permanent exposure to H
2
S will damage the sensor.