Chapter 1: Installation
Page 6 HygroPro User’s Manual
1.4.1 Standard Wiring Connections
The HygroPro is a 4-20 mA loop-powered device that can use the
same two wires for its measurement signal lines and its power supply
lines. Follow the instructions in this section only for units not
requiring hazardous (classified) area protection.
IMPORTANT: To install the HygroPro in a hazardous (classified) area,
see Hazardous Area Wiring Connections on page 15.
The transmitter must be wired using the factory-supplied, 2-meter
cable. If a different cable length is required, please contact the factory
for assistance.
Note: If a longer cable is required, you may splice an extension onto
the standard cable. Be sure to connect leads of the same color
together. For example, connect blue lead to blue lead, brown
lead to brown lead, etc.
The HygroPro may be connected to either of the following types of
external systems:
• an external device that can provide the loop power to the
HygroPro and can also receive and display the 4-20 mA
measurement output from the HygroPro (proceed to next page)
• an external power supply to provide power to the HygroPro plus a
personal computer (PC) running GE’s PanaView™ interface
software (proceed to page 13)
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