Operating Instructions
2 VeriDri™ User’s Manual
2 Sample System Guidelines
You can install the VeriDri transmitter either into a sample system or
directly into the process. GE recommends that the unit be installed in a
sample system to protect the probe from coming into contact with damaging
elements in the process.
Before constructing a sample system, you should consult a GE Applications
Engineer and adhere to the guidelines below. See Figure 1 on page 3 for an
example of a suitable sample system.
• See “Specifications” on page 13 for The VeriDri dimensions and
other requirements.
• Sample systems should be kept very simple.
• The transmitter should be installed so it is perpendicular to the
sample inlet.
• The sample system should contain as few components as possible,
and all or most of those components should be located downstream
from the measurement location.
• If possible, you should use stainless steel components for all wetted
parts.
• Sample system components should not be made of any material that
will affect measurement. Most common filters and pressure
regulators are not suitable for sample systems because they have
wetted parts which may absorb or release components (such as
moisture) into the sample system. They may also allow ambient
contamination to enter the sample system.
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