6.5 Prooftest
The Prooftest checks the proper function of sensor and sensor head on a regular schedule. It cannot
be used to test the entire alarm chain, because the analog signal is set to 2 or 4 mA. If you want to
prooftest the entire alarm chain, this must be done in the measuring mode. You do have the capability
to test connected devices in the TEST menu (see chapter 6.7).
You need Statox 505/506 calibration adapter art. #. 570505, an inert gas tube 4x1 mm (i.e. art. #.
556710) and span gas with a concentration within the measuring range, preferably close to the alarm
threshold.
Connect the gas adapter with a slight turn clockwise. Connect the gas tube (picture chapter 6.4).
Required flow is ca. 20 l/h (300 ml/min).
If you have to follow a zero emission policy, you can connect an active carbon filter at the adapter
outlet. Take care to avoid stagnation pressure to build up.
When the sensor head displays PROOF, confirm with ENTER and turn the gas on. The measured
value will be flashing constantly. Wait until the signal is stable before reading the measured value.
Remove the gas adapter and shut the gas off. Let the reading decrease to zero, then return to the
measuring mode.
If the measured value deviates too much, you should perform a calibration (see chapter 6.4). In many
areas legislation allows ± 20%. Follow your local regulations.
Special timeout: 30 minutes instead of 5 min.
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