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Duct installation – Vaisala HMT140 User Manual

Page 23

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Mounting

M21488EN-C

15

Figure 2: Mounting Diagram

Note:

It is strongly recommended that you use all four

screws; however, the HMT140 enclosure fasten-

ing holes are initially covered with a thin plastic

membrane, so less than four screws could be also

be used without sacrificing the ingress protection

(IP) class of the enclosure.

Duct Installation

The duct installation kit includes a plastic pipe with a flange

(Vaisala part#: 215619).
To install the HMP110 probe with the duct installation kit,

drill a hole into the duct wall, assemble the probe to the duct

installation kit, slide the probe head through the hole, and

attach the flange to the duct wall with four screws.