Industrial sensing solutions for OEM and automation applications

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Pressure Transmitters

FH4 Series

Refrigeration Pressure Transmitter

A compact pressure transmitter for refrigeration and HVAC equipment, featuring a 17-4 PH stainless sensing diaphragm, anti-condensation construction, and extended pressure-cycle life.

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FH4 Series Refrigeration Pressure Transmitter
RANGE5 to 10,000 bar options
OUTPUT4-20 mA / 0-5 V / 0.5-4.5 V / 0-10 V
MATERIAL17-4 PH wetted diaphragm; 304 SS housing
PROTECTIONIP65 / IP67 by connection

Product overview

Application-focused measurement and switching.

The FH4 Series is designed for refrigeration circuits, compressors, environmental chambers, and related equipment exposed to wide temperatures and repeated pressure cycling. A MEMS sensing element, 17-4 PH stainless diaphragm, full-temperature compensation, and self-sealing construction provide stable output in compact OEM installations.

Configuration note

Ratings, materials, interfaces, and approvals can vary by ordered configuration. CASCED US confirms the controlled specification before order acceptance.

Key features

  • Refrigerant-compatible, anti-condensation construction
  • 17-4 PH precipitation-hardened stainless-steel sensing diaphragm
  • More than 10 million full-scale pressure cycles
  • Integrated overload design with 2 x overpressure and 5 x burst rating
  • Full-temperature compensation with <2 ms response time
  • Multiple process, electrical, and analog-output configurations

Technical specifications

Key data for product selection.

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Pressure ranges
5, 10, 16, 20, 30, 40, 50, 100, 500, 1,000, or 10,000 bar
Pressure reference
Gauge
Overpressure / burst pressure
2 x FS / 5 x FS
Accuracy options
+/-0.5% FS or +/-0.25% FS
Output signals
4-20 mA, 0-5 V, 0.5-4.5 V low-power, or 0-10 V
Supply voltage
10-30 VDC
Response time
<2 ms
Long-term stability
<0.1% FS
Insulation resistance
>=50 Mohm at 250 VDC
Protection
Reverse-polarity and short-circuit protection
Operating temperature
-20 to +85 deg C; optional -40 to +125 deg C
Storage temperature
-40 to +125 deg C
Pressure-cycle life
>10 million full-scale cycles
Vibration
IEC 60068-2-6, 5-2,000 Hz, <=20 g
Wetted material
17-4 PH stainless steel
Housing
304 stainless steel
Process connections
G1/4, G1/2, 1/4 NPT, or 7/16-20 UNF male/female; custom options
Electrical connections
DIN 43650, AMP, or M12 x 1
Ingress protection
IP65; IP67 with M12 connection

Downloads

Technical documentation

View in your browser or download a copy for engineering and sourcing review.

EN
English technical datasheetProfessionally translated and reviewed PDF

Typical applications

Engineered for real industrial systems.

01Refrigeration and air-conditioning equipment
02Compressors and chillers
03Refrigerant pressure test equipment
04Steam sterilizers and temperature test chambers

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