CDP301 Dew-Point Tester User’s Manual
2 97585 Issue 1, June 2020
INTRODUCTION
1.2 Operating Overview
The CDP301 is a manual visual instrument. It is designed to follow the requirements
as described in ASTM D1142 and ISO6327. Using a simple button push, the measured
hydrocarbon and water dew-point temperature, pressure, date and time are stored and
indexed for review and retrieval/download at a later date.
1.3 User Display and Interface
The CDP301 Display and User Interface (UI) is presented via the circular window of the
enclosure. The unit is operated using 5 buttons, which allows full control of the UI. The
cover is fully detachable for greater access into the enclosure for service. During normal
operation of the instrument the cover must remain fully secured.
1.4 Calibration
Prior to shipment, the cooled-mirror dew-point sensor within the instrument undergoes
stringent factory calibration using high purity hydrocarbon gas of known dew point.
Due to the inherent stability of the instruments, only periodic calibration maintenance
is required under normal operating conditions. (See Maintenance Section below.)
1.5 Storage Instructions
The CDP301 has been designed for the accurate manual visual detection of hydrocarbon
and water dew point within natural gas. In order for the Dew-Point Tester to be functional
upon use it should be stored in accordance with the guidelines below:
• The Dew-Point Tester must be housed in a sheltered area, out of direct
sunlight and rain.
• The Dew-Point Tester should be stored to minimize the possibility of
sitting in ground water.
• The temperature within the storage environment should be maintained
between 0 and +50°C (+32 and +122°F).
• The humidity within the storage environment must be non-condensing.
• The storage environment must not expose the Dew-Point Tester to any
corrosive elements.
• The Dew-Point Tester may stay assembled with its sample conditioning
system (if supplied).
• All process connections should remain disconnected.
• All protective coatings should remain in place until use.
For the period from rst use of the CDP301, the following precautions should be followed:
• The Dew-Point Tester and associated sampling system must remain
isolated from the process gas, and the enclosure should remain closed to
ensure ingress protection is maintained.
• At time of start-up the procedures contained in this manual must be
followed.
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