ROTRONIC HF8 - Manual (Page 13)

E-M-HF8-V2_10
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroFlex HF8 Humidity Temperature
Transmitter: User Guide Instruction Manual
Document Type
Page 13 of 35
Document title
© 2012; Rotronic AG E-M-HF8-V2_10
d) Immerse as much of the probe as possible in the environment to be measured.
e) Prevent the accumulation of condensation water at the level of the sensor leads. Install the
probe so that the probe tip is looking downward. If this is not possible, install the probe horizontally.
5.2 HF8 enclosure
The HF8 enclosure consists of a base and a cover held together with 4 screws. To open the enclosure, use a
metric 3 mm hex key. Prior to re-assembling the enclosure, verify that the red seal is sitting properly in its
groove on the base.
5.3 Installation of the enclosure and probe
Mounting position of the enclosure
The enclosure of the HF8 is designed to be mounted in a horizontal
position with the probe inputs located underneath.
Mounting hardware for the enclosure
Method 1: The HF8 is supplied with 2 screws, 2 drywall anchors and two
rubber washers. The base of the enclosure has 2 screw-wells (see drawing)
that are normally closed at the bottom. Use the template provided with the HF6
to drill mounting holes in the wall and insert the drywall anchors. Place a
rubber washer on each screw. Insert a screw in each well and push to open
the bottom of the well.
Method 2: When a DIN-rail (35 mm / 1 3/8”) is available use part AC5002 (not
included). This is a DIN-rail mounting kit consisting of 2 clamps that attach to
the back of the enclosure with the screws provided.
Mounting hardware for through-wall probe separated by a length of cable
Use parts AC1303-M (compression fitting) and AC1305 (flange) to hold and seal the
probe when mounted through a wall (see Accessories).