K-Patents PR-21-S - Manual (Page 26)

20 PR-21-S instruction manual
3.2 Mounting Indicating transmitter
The Indicating transmitter should preferably be located in an easily accessible, well
lit and dry area. The enclosure must not be exposed to rain or direct sunlight. Avoid
vibration. Take interconnecting cable length into consideration when choosing the
mounting location.
The enclosure is mounted vertically on an upright surface (wall) using four mounting
feet, see Figure 3.3. The LCD is best viewed when approximately on the eye level of
the user.
Important: Do not drill mounting holes in the enclosure as that will affect the pro-
tection class of the enclosure and damage the electronics.
Figure 3.3 Indicating transmitter: dimensions (mm/in)
and mounting feet measures
Note: The LCD display has an operating temperature range of 0–50 °C and a storage
temperature range of -20–60 °C.
Important: The DTR does not have a built-in power switch. The system is always
powered on when connected to a power source. K-Patents recommends mounting an
external power switch to control the DTR’s power supply, Figure 3.5.
3.3 Electrical connections
3.3.1 Interconnecting cable
Interconnecting cable specification is in Section 9.4.2 and cable model codes are told
in Section 9.2.2
3.3.2 Connecting sensor
Note that old PR-01-S cables (model codes PR-8001-XXX) can be used if they are in
good shape and shorter than 100 meters.