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Portable Dew-Point Tester – Michell CDP301

Updated:2025-03-13

Brand: PST/Michell
Model: CDP301
Description: CDP301 portable HCDP tester uses the chilled mirror principle for both hydrocarbon and water dew point measurements and is designed to follow the requirements as described in ASTM D1142. Based on the
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Product Details

Portable Dew-Point Tester – Michell CDP301 Description：

Product Manual Datasheet

Manual hydrocarbon and water dew-point tester for natural gas

Features

Fundamental cooled-/chilled-mirror dew-point measurement principle

High-definition color LC display

Visual identification of both water and hydrocarbon dew point

Automatic mirror cooling rate control according to ISO 6327 and ASTM D1142 test methods for natural-gas dew-point measurements

Self-contained, rechargeable battery powered

Exd certified IECEx ATEX UKCA Zone 1 IIB+H2 T3

100 barg operating pressure rating

Greater than 60?C measurement depression range (up to 100 barg pressure)

Better than +/-0.5?C accuracy of mirror surface measurement

CDP301 portable HCDP tester uses the chilled mirror principle for both hydrocarbon and water dew point measurements and is designed to follow the requirements as described in ASTM D1142. Based on the visual manual method of observing the formation of condensate, the CDP301 uses a high-definition visual image to assist users and allows image capture and reliable logging of measurements for later review.

Specifications

Hydrocarbon & Water Dew-Point Measurement
Measuring Technique	Chilled mirror
Sensor Cooling	Automated cooling ramp rate selectable according to ASTM D1142 or ISO6327 measurement practice
Maximum Range	Depression range up to Δ T >65°C
Accuracy	±0.5°C
Resolution	0.1°C, 0.1°F
Sample Flow	0.25...0.5 Nl/min
Pressure Measurements HCDP & WDP
Units	MPa, barg, psig
Resolution	0.1 MPa, 0.1 barg, 1 psig
Accuracy	±0.25%FS
Dew-Point Tester
Operating pressure	Up to 100 barg
Sample supply pressure	20...100 barg (290...1450 psig)
Enclosure	Cast LM25 Alloy IP64 (NEMA4 equivalent)
Gas connections	?”NPT
Operating environment	-30°C...+50°C max 95%rh
Power Supply	Rechargeable Li-ion battery, up to 8 hours life from full charge
Weight	8 kg
Display & user interface	High-definition 5.7” full-color display, operated by 5 push buttons
Logging/Image capture	2GB onboard data storage
Hazardous Area Certification	ATEX/UKCA: II 2 G Ex db ia IIB+H2 T3 Gb (Tamb -30°C...+50°C) IECEx: Ex db ia IIB+H2 T3 Gb (Tamb -30°C...+50°C) cQPSus: Class I, Division 1, Gr BCD T3 (Tamb -25°C...+50°C) Class I, Zone 1 AEx db ia IIB+H2 T3 Gb (Tamb -30°C...+50°C) Ex db ia IIB+H2 T3 Gb (Tamb -30°C...+50°C)
Data transfer	USB Standard B connector for log/image transfer (safe area only)
Mounting	5/8 inch 11 UNC thread suitable for Tripod mount. Optional bench top mount.