Electrical connection
Liquitrend QMW43
12
Hauser
5.2.2
Installation instructions
A
B
32 mm
32 mm
A0037386
7
Installation examples
A
Thread G ¾" , G 1"
B
Thread M24x1.5
5.3
Post-installation check
Is the device undamaged (visual inspection)?
Does the device comply with the measuring point specifications?
• Process temperature
• Process pressure
• Ambient temperature range
• Measuring range
Are the measuring point identification and labeling correct (visual inspection)?
Is the device adequately protected against precipitation and direct sunlight?
Is the device adequately protected against impact?
Are all mounting and safety screws securely tightened?
Is the device properly secured?
6
Electrical connection
6.1
Connecting the device
L
WARNING
Risk of injury from the uncontrolled activation of processes!
‣
Switch off the supply voltage before connecting the device.
‣
Make sure that downstream processes are not started unintentionally.
L
WARNING
Electrical safety is compromised by an incorrect connection!
‣
In accordance with IEC/EN61010 a suitable circuit breaker must be provided for the
device .
‣
Voltage source: Non-hazardous contact voltage or Class 2 circuit (North America).
‣
The device must be operated with a fine-wire fuse 500 mA (slow-blow).
Protective circuits against reverse polarity are integrated.
