Chapter 1: Installation
1.1 Introduction
The
HygroPro moisture transmitter
is a compact,
intrinsically-safe, loop-powered, 4-20 mA transmitter
that provides accurate dew/frost point measurements
over a range of –110° to 20°C (-166° to 68°F). It features an
integrated display and a six-button keypad, and it is
housed in an IP67/Type 4X enclosure.
The
HygroPro
transmitter uses an aluminum oxide
moisture sensor, and it includes a temperature thermistor
and a pressure transducer on a common mount for
calculation of parameters such as:
• ppm
v
in gases
• ppm
w
in liquids
• pounds per million standard cubic feet
in natural gas
• process relative humidity.
IMPORTANT
To install the
HygroPro
in a hazardous (classified) area,
see "Hazardous area wiring connections" on page 6.
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