High Accuracy Pressure Transducers
High accuracy pressure transducers measure process pressure with a rated accuracy of ±0.1% FS, combined with low temperature drift and long-term stability for applications where a standard ±0.25% instrument is not enough. Each unit uses a welded 316L stainless steel diaphragm and digitally compensated electronics, available with 4-20mA, 0-10V or RS485 output. PRESSUREPOINT supplies these instruments factory-direct, with custom pressure ranges from vacuum to 600 bar and your choice of G1/4, NPT or custom process connection. Typical applications include test and calibration benches, hydraulic research rigs, precision process control and OEM equipment that must hold tight tolerances over time.
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Why High Accuracy Pressure Transducers
High accuracy pressure transducers measure process pressure with a rated accuracy of ±0.1% FS, combined with low temperature drift and long-term stability for applications where a standard ±0.25% instrument is not enough. Each unit uses a welded 316L stainless steel diaphragm and digitally compensated electronics, available with 4-20mA, 0-10V or RS485 output. PRESSUREPOINT supplies these instruments factory-direct, with custom pressure ranges from vacuum to 600 bar and your choice of G1/4, NPT or custom process connection. Typical applications include test and calibration benches, hydraulic research rigs, precision process control and OEM equipment that must hold tight tolerances over time.
- Rated accuracy ±0.1% FS, roughly half the error band of a standard ±0.25% FS transducer
- Low temperature drift from digitally compensated electronics across the -20°C to +85°C compensated range
- Long-term stability from a welded 316L stainless steel diaphragm, no internal o-rings in the wetted path
- 4-20mA, 0-10V, 0-5V and RS485 Modbus outputs, vacuum to 600 bar ranges
- G1/4, G1/2, NPT and custom process connections, IP65/IP67 rated, CE marked
- Each unit ships with calibration test data; optional factory calibration certificate
Specifying a High Accuracy Pressure Transducer
Key specification decisions
- Range — accuracy is % of full scale, so choose the narrowest range that covers your working pressure with headroom; an oversized range wastes the accuracy you are paying for.
- Temperature — check the compensated temperature range and the thermal error band, not just the accuracy at reference temperature.
- Output — 4-20mA for PLC/SCADA and long cable runs; 0-10V for short runs; RS485 Modbus for multi-drop digital buses.
- Media compatibility — 316L stainless suits water, oil and most hydraulic fluids; confirm wetted materials for chemical media.
- Calibration — request a factory calibration certificate with traceable test data when the instrument feeds quality records or acceptance testing.
Typical applications
- Test & calibration benches — reference pressure measurement and cross-checking of lower-grade instruments.
- Hydraulic research rigs — cylinder and accumulator pressure where repeatability matters across test cycles.
- Precision process control — batch dosing, ratio control and quality-critical loops in chemical and pharmaceutical lines.
- Engine & compressor testing — steady-state and slow transient pressure measurement on test stands.
- OEM precision equipment — embedded measurement for machinery that documents performance data.
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FAQ
Questions Buyers Ask
What does ±0.1% FS accuracy mean in practice?
Accuracy is rated as a percentage of full scale, not of the reading. On a 100 bar range, ±0.1% FS means the error band stays within ±0.1 bar across the span. For comparison, a standard industrial transducer is typically ±0.25% FS, so the high accuracy series roughly halves that error band.
How is accuracy different from temperature drift?
Accuracy describes the error band at reference temperature, while temperature drift describes how the zero and span shift as media and ambient temperature change. A low-drift transducer keeps its calibration valid over the compensated range, so readings stay repeatable from a cold start through a warm process line.
When do I actually need ±0.1% FS instead of ±0.25% FS?
Test and calibration benches, hydraulic research rigs, batch dosing and quality-critical process loops benefit from the tighter band. For general monitoring on pumps, tanks and machines, ±0.25% FS is normally sufficient. If you are unsure, send your working range and required tolerance and we will confirm the right grade.
What keeps a high accuracy transducer stable over years of service?
A welded 316L stainless steel diaphragm with no internal o-rings in the wetted path, digitally compensated electronics, and a conservative overpressure rating all contribute. Each unit ships with its calibration test data, and an optional factory calibration certificate is available.
Which outputs are available on the high accuracy series?
4-20mA two-wire, 0-10V, 0-5V and RS485 Modbus, with custom ranges from vacuum (-1 bar) to 600 bar and G1/4, G1/2, NPT or custom process connections.