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  • UL/cUL 1604 (CSA 213) Class 1 Div 2 Groups A, B, C, D
  • High strength stainless steel construction
  • No welds or internal O-rings
  • Wide operating temperature range
  • Ranges from (0 to 1) to (0 to 15) PSI
  • Low static and thermal errors
  • Unparalleled price and performance
  • Compatible with wide range of liquids and gases
  • EMI/RFI protection


The AST43LP Media Isolated Low Pressure Sensor is a low pressure Class I Division 2 stainless steel pressure transmitter for use in hazardous areas. In addition to its rugged construction and the best price-to-performance ratio in the industry, the AST43LP is the solution for low pressure measurement for a variety of applications.

Applications include:

  • Refrigeration
  • Water management
  • Industrial OEM equipment
  • Oil & gas platforms
  • Pressure instrumentation
  • Process control
  • Gas compression & storage
  • Test stands
  • Oxygen delivery systems
  • External tank level


This product can be used in the following applications:

Here's how some of our customers use this product...

Natural Gas Compressors

The Background: Our customer is an OEM that manufactures natural gas compressors used by energy wholesalers to compress gas to ~1psi before being delivered to the pipelines. They seek a highly accurate pressure sensor to monitor the gas and ensure it’s at the proper pressure.

The Problem: There are two primary issues with this application. One is maintaining high accuracy measurements at very low pressures. The second is the need for hazardous area approvals due to their use with natural gas.

The Solution: We recommended the AST43LP Media Isolated Low Pressure Sensor which is optimized for very low pressure applications and includes Class I Division 2 approvals for use in hazardous areas.