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4. Fastening screws
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Type A (plastic) - plug the fastening screw onto the temperature sen-
sor.
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Type B (brass) - insert the temperature sensor in the fastening screw
and place the sensor in the mounting pin. Press in the dowel pin com-
pletely and remove the mounting pin.
5. Insert the temperature sensor with the securing fitting in the ball
valve and manually tighten (2-3 Nm).
4.2 Installation in a pocket
It is recommended that temperature sensors for DN25 rated sizes or smal-
ler are only fitted in new installations such that they are directly immersed.
This ensures higher measuring accuracy.
5.
Power supply
5.1 Battery
A 3.6 VDC lithium battery is fitted in the standard version.
ƒ
The battery must not be recharged or short-circuited.
ƒ
Ambient temperatures below 35 °C have a positive effect on battery
lifetime.
Used batteries must be disposed of at suitable waste collection
points! Caution: Risk of explosion if battery is replaced by an
incorrect type.
5.2 Power supply unit
ƒ
Power supply units of 24V AC or 230V AC can be changed or supple-
mented at any time.
It is strictly necessary to have the protective safety cover ins-
talled at all times.
Under no circumstances connect between the two phases other-
wise the power supply unit will be destroyed.
ƒ
The cable is to be fused at max. 6A and protected against tampering.
ƒ
The power supply unit notifies the meter if mains voltage is present.
ƒ
If the power supply fails, the backup battery (CR2032) provides the
power supply for up to 1 year. The LCD readings (on pressing button)
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