Delta Controls 2HT User Manual
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002522-2HT 180210.doc
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Do not mix non-HART compatible signals within the same cable run.
Cable should be run through a sealed metal gland rated IP66,
to avoid moisture ingress in to the
housing and provide a strong mechanical fixing. For EEx d applications the use of approved cable and
glands is a mandatory requirement
Recommended wiring practice
It is recommended that the field wiring be trimmed to length
as follows. This will then allow access to the zero and span
buttons and prevent fouling of the display cable if fitted.
Recommendations for Power supply :-
The DC power supply should have less than 2% ripple, and be able to source at least 24 mA for a single
transmitter and 100 mA for a multi-drop system, at a nominal 24 volts.
The terminal block inside the instrument has three connections, signal, return and ground. For
convenience there is an internal ground as well as two external connections.
The Delta transmitter will run with reverse polarity and has over voltage protection as standard.
60mm
45mm
30mm
7mm
250
ohm
RECEIVER
PSU
ADDITIONAL INSTRUMENTS
INTERNAL
CASE
GROUND
GND
+
-
+VE
-VE
GND