Type FF-
4 Installation and connection
4.1 Mounting
4.1.1 Mounting of moisture detector and adapter
The flow adapter is equipped with internal threading, G1/4 or NPT1/4 (flow adaptor marked with NPT), for the gas connections
and G1/4 for the moisture sensor. The drawing you find on the backside of the attached data sheet. As well the fittings as the
moisture detector must be used with Teflon sealing or an O-ring to assure proper sealing of the sample stream. Please assure
that the wires are guided tension free.
If there’s particulate or aerosols in the sample gas, a filter has to be installed upstream the detector. Otherwise the particulate or
aerosols can build a layer on the detectors surface inhibiting its function.
The wire should NOT be put into one cable channel with power switching cords. The function can be influenced otherwise.
It might be necessary to adjust the position of the humidity sensor in strongly fluctuating ambient or component temperatures
in order to ensure the necessary tightness in the system.
4.1.2 Mounting of detector-controller
Controller type FF-19
This type is designed as an insert for 19"-housings. The bus connector is a DIN 41612 type B. Used pins of columns a and c are
plated through.
Before inserting the FF-19 into the housing, set the jumpers.
Controller types FF-HM
The type FF-HM is designed for standard 35 mm rail mounting according to DIN EN 50022.
Controller types type FF-..-U
For mounting disassemble the cover by loosening the 4 black screws. The holes for the mounting screws are below the black
screws. Mounting dimensions are 165 mm x 79 mm (6.5" x 3.1"). They are made for screws M4, the screws head should be at least
6 mm (0.24") in diameter.
4.2 Electrical connections
WARNING
Hazardous electrical voltage
The device must be installed by trained staff only.
CAUTION
Wrong mains voltage
Wrong mains voltage may damage the device.
Regard the correct mains voltage as given on the type plate.
WARNING
High voltage
Damage to the device in case of insulation testing
Do not proceed insulation tests with high voltage
to the device as a whole!
6
Bühler Technologies GmbH
BE410002 ◦ 09/2017
