6 Mounting of the device
6.1 Safety instructions
6.2 Application notes
6
The device must only be used for its intended purpose.
Installation of the controller and maintenance work must only be carried out by
trained personnel. The power supply must be turned off for installation and
servicing. The applicable safety regulations must be observed! All work on the
compressed-air system must be carried out under pressure-free conditions.
The device must only be operated with extra-low voltage. This also applies to all
external connections, such as the relay outputs.
The air quality at the site of installation must be checked prior to assembly.
Repairs must be made to the system in the case of any water or oil leakages.
Contact with large quantities or water or oil may damage the sensor.
The compressed air must be drawn from the upper side of the pipe. The device
must be mounted above the compressed-air line so that any condensation
produced in the event of failure cannot flood the measuring chamber.
Use only suitable materials. The materials used must be impermeable to water
vapour. Therefore please do not use regular polyurethane hoses! The only
recommended material for flexible hose connections is PTFE ("TEFLON"). All
metals are suitable down to -30°Ctpd. Below this, stainless steel is the
preferred choice. Avoid using excessively long sample-gas lines or unnecessary
connectors.
The sensors on upstream components must not diffuse water vapour into the
surrounding environment! Please use only high-quality components, e.g. ball
valves with PTFE seals.
Carefully seal all points of connection with the sensor or measuring chamber.
However, never use anaerobic liquid sealants, as these maydamage the sensor
element!
Heavy particle loads will clog the filter or filter choke over time, resulting in a
delayed response. In critical cases, an additional fine filter must be installed
upstream of the measuring device.
Summary of Contents for TPK 21
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