Endura APA592
pH / Redox (ORP) transmitter
4 Electrical Installation
26
OI/APA592–EN Rev. E
4 Electrical Installation
4.1 Cable Glands and Plugs
4.1.1 APA592–PH for Intrinsically Safe, Type n and Non-incendive Installations
Non-Ex d transmitters are supplied with a nylon conduit plug and cable gland. The cable gland is sized to
provide a tight seal around the sensor cable.
If a customer-supplied cable gland and plug is used, the cable diameter for the cable gland used must
comply with the requirements for IP/NEMA 4X protection. This must be checked during installation.
4.1.2 APA592–PH Ex d / Explosion-proof Models without Cable Gland
APA592–PH Ex d / explosion-proof rated transmitters are supplied with a standard 316 stainless steel rated
plug.
Hazardous area 316 stainless steel
1
/
2
in. NPT or M20 cable glands must be ordered as an accessory
based on the hazardous area installation requirements.
Warning.
Observe all local instructions and regulations governing electrical installation. Ensure the power
supply and / or bus connections are switched off before making connections.
Use a maximum of 12 SWG (10 AWG) wire for connection of this transmitter.
Ensure connection to protective earth.
Do not apply power until fully installed.
The transmitter is not fitted with a switch and does not have an overvoltage protection device,
lightning protection or voltage separation capacity therefore these must be provided on the plant
side.
Power supplies and signals are routed in the same line and must be implemented as SELV or
PELV circuits according to requirements (standard version). In the ignition-proof version, the
guidelines regarding the ignition-proof requirements must be adhered to.
Ensure the existing power supply corresponds with the specifications on the name plate and the
technical specifications – see Section 10, page 90.
Use only signal cable wires with tinned or wire end sleeves.
Note.
For ATEX installations, an approved ATEX Ex d cable gland must be used according to
IEC/EN 60079-1. For FM and CSA installations, an approved Ex d cable gland must be used.
