Differential pressure transducer 218D

piezoresistiveanalogvoltage output

Product overview
The 218D is a low-profile differential pressure transducer based on the BCM 101B (a19D) piezoresistive sensor. The sensor is mounted in a 316 stainless steel housing and secured by laser welding. The device is intended for differential pressure measurement of gases and diluting liquids and is optimised for smart valve applications.

Key features and compatibility

• Compact, low-profile design for integration with valve assemblies
• Wetted parts: 316 stainless steel standard; Hastelloy-C optional for aggressive media
• Diaphragm: 316L stainless steel standard; Tantalum option for stronger corrosive fluids
• Accuracy: typically 0.5% fs (full scale)
• Static pressure/overload capability: up to 1000% fs (maximum 100 bar)

Available pressure ranges (selection shown on product page)

• 0.1 bar
• 0.2 bar
• 0.35 bar
• 0.7 bar
• 1 bar
• 2 bar
• 3.5 bar
• 7 bar
• 10 bar
• 20 bar
• 35 bar

Mechanical interface options

• G1/4 (female) (standard)
• G1/4 (male)
• Customized mechanical interface (specify required interface)

Electrical interface options

• 4-color PVC flying wires, 120 mm (standard)
• DIN43650 connector
• Ø5 mm, 4-core shielded PVC cable, 1 m length
• Customized electrical interface

Output signal

• Specification: ≥ 4 mV/V
• Inquiry example: 20 mV @ 5 V excitation

Other product details / technical specifications

• Model: 218D
• Sensor base: BCM 101B (a19D) piezoresistive differential pressure sensor
• Housing: 316 SS, laser welded
• Diaphragm: 316L SS (Tantalum optional)
• Wetted parts: 316 SS (Hastelloy-C optional)
• Pressure ranges: 0 ~ 0.1 bar up to 0 ~ 35 bar
• Pressure type: Differential
• Static pressure / Overload: 1000% fs (max. 100 bar)
• Accuracy: 0.5% fs (standard)
• Output signal: ≥4 mV/V (typ. inquiry option 20 mV @5 V excitation)
• Mechanical interface examples: G1/4 female (standard), G1/4 male, customized
• Electrical interface examples: 4F flying wires, DIN43650, shielded cable (Ø5 mm, 4-core, 1 m), customized
• Intended media: gases and diluting liquids