Smart Capacitive Pressure / Differential Pressure Transmitter
- Reference accuracy 0.075% (±0.075% and ±0.2% options); stability ±0.01%/year
- 100:1 turndown; output 4-20mA DC with HART
- Differential (DP), gauge (GP) and absolute (AP) pressure inputs
- Supply 11.9~45VDC; HART load 250~1500Ω; start-up time 5s
- Isolating diaphragms: 316LSS, Hastelloy C-276, tantalum, Monel
- Approvals listed: CSA, FM, ATEX, GOST; single and double remote-seal variants
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Overview
The smart capacitive pressure / differential pressure transmitter is a full smart-series instrument measuring differential pressure (DP), gauge pressure (GP) and absolute pressure (AP), with reference accuracy of 0.075% (±0.075% and ±0.2% options per the specification table), 100:1 turndown and a 4-20mA DC output with HART communication.
Long-term stability is ±0.01%/year. The transmitter operates on an 11.9~45VDC supply with a HART load of 250~1500Ω, 500Vrms (707VDC) insulation and a 5s start-up time. Isolating diaphragm options include 316LSS, Hastelloy C-276, tantalum and Monel, allowing the wetted parts to be matched to corrosive media. Approvals listed for the series include CSA, FM, ATEX and GOST, with intrinsically safe and flameproof versions available.
The same smart series covers several mechanical configurations: the standard capacitive pressure / differential pressure transmitter, a mono-silicon (single-crystal silicon) pressure transmitter, a double-flange (capillary remote-seal) DP / level transmitter for level and density measurement, and a side-flange (single remote-seal) smart pressure transmitter. All share the series specifications above.
Features
- Smart multi-variable platform: DP, GP and AP inputs
- High accuracy: 0.075% (±0.075% / ±0.2% options); stability ±0.01%/year
- Wide 100:1 turndown for flexible re-ranging
- 4-20mA DC output with HART digital communication
- Isolating diaphragms in 316LSS, Hastelloy C-276, tantalum, Monel and other materials
- Variants: capacitive P/DP, mono-silicon pressure, double-flange remote-seal DP/level, side-flange single remote-seal
Specifications
| Parameter | Value |
|---|---|
| Measured variables | Differential pressure (DP), gauge pressure (GP), absolute pressure (AP) |
| Reference accuracy | 0.075% (options ±0.075%, ±0.2% per spec table) |
| Long-term stability | ±0.01%/year |
| Turndown | 100:1 |
| Output signal | 4-20mA DC / HART |
| Power supply | 11.9~45VDC |
| HART load | 250~1500Ω |
| Insulation | 500Vrms (707VDC) |
| Start-up time | 5s |
| Isolating diaphragms | 316LSS, Hastelloy C-276, tantalum, Monel, etc. |
| Approvals listed | CSA, FM, ATEX, GOST |
Series variants
| Variant | Description |
|---|---|
| Capacitive pressure / differential-pressure transmitter | Standard smart capacitive transmitter for DP, GP and AP measurement |
| Mono-silicon (single-crystal silicon) pressure transmitter | Single-crystal silicon sensing version within the same smart series |
| Double-flange (remote-seal) DP / level transmitter | Capillary remote-seal version for level and density measurement |
| Side-flange (single remote-seal) smart pressure transmitter | Single flange-seal version for direct vessel mounting |
Applications
- Differential-pressure flow measurement
- Gauge and absolute pressure measurement in process plants
- Liquid level and density measurement (double-flange remote-seal variant)
- Vessel-mounted pressure measurement (side-flange single remote-seal variant)
- Corrosive media using Hastelloy C-276, tantalum or Monel diaphragms
FAQ
What accuracy and turndown does this smart series offer?
Reference accuracy is 0.075% (±0.075% and ±0.2% options per the specification table) with long-term stability of ±0.01%/year and a 100:1 turndown for flexible re-ranging.
Which variant should I use for tank level measurement?
The double-flange (capillary remote-seal) DP / level variant is designed for level and density measurement; a side-flange single remote-seal version is available for direct vessel mounting.
Can it be used in hazardous areas?
Intrinsically safe and flameproof versions are available, with CSA, FM, ATEX and GOST approvals listed for the series. Contact us with your medium, range and process connection; we respond within 24 hours.
