Relative pressure transmitter 4262A

piezoresistivestrain gaugesilicon

Overview
The modular high-performance piezoresistive gauge pressure transmitter 4262A covers 0.1–350 bar with high accuracy and long-term stability for harsh industrial environments exposed to extreme temperatures, vibration and shock.

Main features / advantages

• Pressure ranges: 0.1 to 350 bar (1.5 to 5000 psi)
• Compensated temperature range: −40 to 120 °C (−40 to 250 °F)
• Dynamic response up to 2 kHz
• Accuracy 0.1% FS; long-term stability 0.1% FS per year; proof pressure 300%
• Welded 316L stainless steel diaphragm with incompressible silicone oil isolation
• Micromachined silicon strain gauge (Wheatstone bridge) for high sensitivity and signal‑to‑noise
• Built-in electronics: temperature compensation, EMC and reverse-polarity protection, power regulation, over-voltage and short-circuit protection
• Configurable outputs: mV, V or mA; wide choice of pressure and electrical connections
• Hazardous area certification available; test data traceable to ISO 17025 and NIST

Description
The sensing element is a silicon sensor mounted in a high-integrity seal assembly fully isolated from the pressure media by a welded 316L diaphragm. Measured pressure is transmitted through incompressible silicone oil to a micromachined silicon strain gauge configured as a Wheatstone bridge. Compared with metal-based strain gauge sensors, silicon provides higher sensitivity, better repeatability, improved signal-to-noise ratio, greater overload capability and superior long-term stability. The pressure assembly uses a patented sealing method (US Patent 7,373,827) that withstands multiple cycles without fatigue and allows flexible selection of pressure connections without adaptors or O‑rings. Integrated electronics condition the sensor output, perform temperature compensation and provide EMC, polarity, over-voltage and short-circuit protections. Each 4262A transmitter is fully tested over pressure and temperature; individual test reports are available and traceable to ISO 17025 and NIST.

Technical specifications

• Model: 4262A
• Pressure ranges: 0.1 … 350 bar (1.5 … 5000 psi)
• Compensated temperature: −40 … 120 °C (−40 … 250 °F)
• Dynamic response: up to 2 kHz
• Accuracy: 0.1% FS
• Stability: 0.1% FS per year
• Proof pressure: 300% of range
• Sensing element: micromachined silicon strain gauge (Wheatstone bridge)
• Diaphragm: welded 316L stainless steel; sensor isolated from media
• Fill fluid: incompressible silicone oil
• Sealing method: patented high-integrity seal (US Patent 7,373,827)
• Electrical outputs: mV, V, mA
• Options: wide choice of pressure/electrical connections; hazardous area certification available