GE HygroPro - Sample System Guidelines

Chapter 1: Installation
Page 2 HygroPro User’s Manual
1.2 Sample System Guidelines
The HygroPro transmitter can be installed in a sample system or
directly in the process line. However, GE recommends that the unit be
installed in a sample system to protect the probe from potentially
damaging components in the process stream. Figure 1 below shows a
typical sample system.
Figure 1: A Typical Sample System
Note: At least 5 ft (1.5 m) of 1/4” (6 mm) tubing vented to
atmosphere will ensure an accurate process sample and avoid
diffusion of ambient air moisture back into the process.
Flow
Probe
Valve 1
Valve 2
Flow Cell
See note below
Intake near the center of the
pipe is recommended.
HygroPro
Needle
Needle