Electrical Installation 7828 Density Transmitter Technical Manual
3-12 78285000_AB
5
6
4-20mA +
4-20mA − + −
4-20mA Meter/Density
Converter
+ve
−ve
4-20mA Power Supply
(may be independent
from 7828 power).
7828
5
6
4-20mA +
4-20mA −
+
−
4-20mA Meter/Density
Converter
+ve
−ve
4-20mA Power Supply
(may be independent
from 7828 power).
7828
3.5 INSTALLATION IN EXPLOSIVE AREAS
The 7828 density transmitter is an explosion/flame-proof device, and therefore the
connections shown in the wiring schedule are applicable. However, it is essential to
observe the rules of compliance with Current Standards concerning flameproof
equipment:
1. The electronic housing covers should be tightened securely and locked in position by
their locking screws.
2. The electrical cable or conduit should have an appropriate explosion proof cable gland
fitted.
3. If any electrical conduit entry port is not used it should be blanked off using the
appropriate Explosion Proof plug, with the plug entered to a depth of at least five
threads.
4. The spigot must be locked in place.
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