Electrical Connection; Connections; Power Supply; Protective Housing - Endress+Hauser nivotester FTC 420 Operating Instructions Manual

Nivotester FTC 420/421
Installation in a protective
housing
Fig. 5
Dimensions of the protective
housing

Power supply

26
A protective housing, degree of protection IP 55, can be supplied
for installation in dusty or moist areas. Two units can be mounted
inside, see Fig. 5:
• Set up the protective housing in a shady spot where the ambient
temperature does not exceed 50 °C, for two units 40 °C, or drop
below -20 °C.
• Screw the cover and cable ducts tightly so that the housing does
not loose any of its protective properties.
5 x PG 16

Electrical connection

Make the following connections:
• to the electronic insert,
• to the output circuit.
• to the power supply,
The fail-safe mode and compensation for conductive build-up on
probes are selected by means of wire bridges at the Nivotester
terminals and electronic insert respectively.
The instrument is set for the voltage selected when ordered.
• Check the operating voltage on the front panel or sticker
• Measure the on-site voltage supply
• Should the operating and supply voltage differ, do not connect
up: check with Endress + Hauser.
Installation
ABS
Stainless steel
Transparent, impact resistant PMMA