Hach-Lange SI792(x) E HACH GLI 3700 series SI792(x) T 7MA2200 and 8398 series User Manual - Manual (Page 23)

Installation
21
3.5 Electrical installation
DANGER
Explosion hazard. Do not connect any components that are not
specified for the device. Always defer to the Hazardous Location
Control Drawing.
Prerequisites:
• Review the applicable control drawing or ATEX EC-Type
Examination certificate
• Review the electrical code regulations
• Review the regulations for electrical installations in hazardous
locations, if appropriate (e.g. EN 60079-10/EN60079-14;
94/9/EC directive; NEC; CEC; Profibus Technical Guidelines
2.091)
• Remove power or confirm non-hazardous status before making
any connections
• Confirm that the intrinsic safety of the device is maintained when
connected to other equipment such as a power supply unit.
3.5.1 Wire preparation
To remove the terminal blocks from the transmitter for sensor wiring:
1. Insert a flat screwdriver between the terminal block and the
transmitter body.
2. Use the screwdriver as a lever to lift the terminal block off the
connectors (see Figure 3 ).