HygroPro User’s Manual Page 3
Chapter 1: Installation
1.2 Sample System Guidelines (cont.)
In the sample system shown in Figure 1 on the previous page, fully
open Valve 1 and use Valve 2 to regulate the sample flow for
measurements at process system pressure. For measurements at
atmospheric pressure, fully open Valve 2 and use Valve 1 to regulate
the sample flow.
Before constructing a sample system, consult a GE application
engineer and observe the following guidelines:
• The sample system should be very simple and should contain as
few components as possible. All or most of those components
should be located downstream of the measurement point.
• Sample system components must not affect moisture readings.
Most common filters and pressure regulators are not suitable for
sample systems because the wetted parts adsorb moisture or
release moisture into the sample system. They may also allow
ambient contamination to enter the sample system. If possible, use
stainless steel for all wetted parts.
• The HygroPro probe should be oriented perpendicular to the
sample system inlet. For dimensions and other sample system
requirements see Mechanical Specifications on page 46.
• Sample systems should be tested for leaks prior to operation, using
a Snoop leak detector, to verify the integrity of connections,
components and fittings.
IMPORTANT: When pressurizing or depressurizing the sample system,
be careful to avoid shock damage to the moisture sensor.
To Next Page
Loading...
