Two Low-Pressure Transmitters, Large DIN 43650A Option


American Sensor Technologies, Inc. (AST) announces two new advances in its pressure product line with the AST44LP and AST43LP low-pressure, hazardous area-approved pressure transmitters. These media-isolated, stainless steel units can perform in a variety of industrial applications and hold the best price-to-performance ratio in the industry. Both low-pressure transmitters are constructed with 316L SS wetted materials for complete compatibility with a wide range of liquids and gases.

The AST44LP carries an UL/cUL 913 (CSA 157) approval and has been rated for Class 1 Division 1 Groups C & D when installed with an approved barrier. This high-strength unit measures low pressure ranges from 0-5 to 0-15 PSI and is intended for intrinsically safe areas.

Similar to the AST44LP series, the AST43LP also measures low pressure ranges from 0-5 to 0-15 PSI, but it is recommended for use in hazardous locations. The AST43LP is UL/cUL 1604 (CSA 213) Class 1 Division 2 Groups A, B, C & D listed.

Common applications for both pressure transmitters include: Industrial OEM Equipment, Water Management, Hydraulic Systems, Control Panels, HVAC/R Equipment, Gas Compression & Storage, Vapor Recovery and External Tank Leveling.

The standard fittings available for both products include 1/4" NPT Male and 7/16"-20 UNF Male. To simplify system integration for existing application and provide flexibility for new system designs, the AST43LP and AST44LP can be packaged with a variety of electrical options. Both units offer assorted cable lengths with conduit fittings or a Hirschmann DIN 43650A. The AST44LP is also equipped to provide alternative options such as: standard cable, mini DIN 43650, Bendix or Packard Metripack 150
3-pin connection.

New DIN Option
Along the same lines, AST announces that the following products will now also have the DIN 43650A option: AST4300, AST4310, AST4400 and AST4410. This option helps to expand AST’s evolving product line while providing an added benefit to the consumer and/or application. The large DIN allows for the unit to be easily installed, repaired or removed independently from the controller. Moreover, the DIN 43650A supplies another option for new designs and a drop in replacement for existing applications.


• Accuracy1- < ± 0.25% BFSL • Stability (1 Year)- ± 0.25%FS, typ • Overange Protection- 2X Rated Pressure • Burst Pressure- 5X Rated Pressure • Pressure Cycles- >10 Million • Temperature • Operating- -40 to 85°C (-40 to 185°F) • Storage- -40 to 125°C (-40 to 250°F) • Thermal Limits • Compensated Range- 0 to 70°C (30 to 160°F) • Temp. Comp. Zero- <± 1.0% of FS • Temp. Comp. Span- <± 1.5% of FS • Other • Shock- 100G, 11 msec, 1/2 sine • Vibration- 20G peak, 20 to 2400 Hz. • EMI/RFI Protection- Yes • Rating- IP-66
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