Deltapilot M 4...20 mA HART Electrical connection
Endress+Hauser 17
The cover for the electronics compartment is tightened by hand at the housing until the stop.
The screw serves as DustEx protection (only available for devices with DustEx approval).
4.8 Post-installation check
5 Electrical connection
5.1 Connecting the device
Supply voltage might be connected!
Risk of electric shock and/or explosion!
‣ Ensure that no uncontrolles processes are activated in the system.
‣ Switch off the supply voltage before connecting the device.
‣ When using the measuring device in hazardous areas, installation must comply with the
corresponding national standards and regulations and the Safety Instructions or Installation
or Control Drawings.
‣ A suitable circuit breaker must be provided for the device in accordance with
IEC/EN61010.
‣ Devices with integrated overvoltage protection must be grounded.
‣ Protective circuits against reverse polarity, HF influences and overvoltage peaks are
integrated.
Connect the device in the following order:
1. Check that the supply voltage corresponds to the supply voltage indicated on the nameplate.
2. Switch off the supply voltage before connecting the device.
3. Remove housing cover.
4. Guide the cable through the gland. Preferably use a twisted, shielded two-wire cable.
O Is the device undamaged (visual inspection)?
O Does the device comply with the measuring point specifications?
For example:
•Process temperature
• Process pressure
• Ambient temperature range
•Measuring range
O Are the measuring point identification and labeling correct (visual inspection)?
O Is the device adequately protected against precipitation and direct sunlight?
O Are the securing screw and securing clamp tightened securely?
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