RELIABLE DEW POINT METERS PRODUCT DATASHEET Model HDT™ Loop-powered Aluminum Oxide Sensor Dew Point Transmitter • Semiconductor • Hydrocarbon Processing • Catalyst Protection • Heat Treating • Industrial Gases

Features • Rugged, Waterproof, Fast, Accurate, HTF™ Aluminum Oxide Sensor Technology • Loop-powered (two-wire) 5 to 28 VDC – Digital (HART Compliant) Output – Analog (4-20mA) Output • Programmable Alarm Signal • Stainless Steel Housing • IP65 Rated Connector (IP66 or IP67 Optional) • Compact Design • Temperature Compensated Calibration • Suitable for installations at pressure or ambient Hyper-Thin-Film (HTF) Al2O3 Moisture Sensor Technology The HDT uses a Hyper-Thin-Film (HTF™) high capacitance aluminum oxide sensor with a measuring range of -100°C to +20°C (-148°F to +68°F)(dp). The HTF sensors...

Built-in Alarm The HDT provides a factory programmable dew point alarm signal through a digital output pin. Additionally, relays or external devices can be operated through the analog or digital loops. Connections The HDT interfaces with both metric 14 mm x 1.25 mm threads and unified 3/4"-16 threads. It is also available in other thread forms, refer to specifications. The HDT connects through an inexpensive twoconductor cable over long distances. Measurement Accuracy/Stability The HDT transmitter uses a multi-point calibration table which provides temperature compensated dew point readings for...

SPECIFICATIONS OF HDT The HDT is a loop powered HART enabled dew point transmitter Housing Stainless steel, weatherproof Dimensions & Weight ~ 32 mm (1.24”) dia. x ~136 mm (5.36”) long including sensor & connector; 227 g (0.5 lbs) Pressure operating range Standard: 34 bar (500 psig). Optional: 340 bar (5,000 psig) Operating Temperature Mechanical connection 14 mm x 1.25 mm threads, and 3/4”-16 threads; other threads upon request 5/8"-18 UNF, G1/2", 1/2" NPT Electrical connections Industrial Standard 9.4 mm, 4 pin connector. IP65 (IP66 or IP67 optional) Two conductor cable. Min. #24AWG; for total...

Specifications of HTF Dewpoint Sensor Element XTR-100 Type Hyper-Thin-Film (HTF™) high capacitance Al2O3 Dewpoint range -100°C to +20°C (-148°F to +68°F), other ranges available Temperature Range Sample flow range (linear vel. @ 1atm): Storage temperature Calibration method NIST/NPL traceable multi-point calibration table with temperature compensation over the full range Approvals/Classifications CE for electromagnetic compatibility, accredited laboratory tested and certified Factory Mutual Approvals NEMKO Approvals IS Class I, II, III, Division 1, Groups A, B, C, D, E, F, G T6 at 40°C ambient;...

Ø.449 [11.4] TAG OR SAFETY WIRE HOLE O-RING .750-16UNF-2A THREAD M14 X 1.25 CLASS g6 THREAD CURVED WASHER (ANTI-LOOSENING) SINTERED METAL FILTER GUARD (100 MICRON) WEATHERPROOF CONNECTOR

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