High-accuracy capacitive differential pressure transducer delivers stable 4–20 mA output through a two-wire system. With ±0.075% to ±0.1% accuracy, IP65 protection, and 10.5–42 VDC power, it is suitable for demanding industrial applications.
- Reliable Industrial-Grade Structure: The anti-interference LCD avoids electromagnetic radiation and signal drift. The self-isolated terminal chamber provides effective dust and moisture protection. Precision-machined terminals ensure firm connection and stable, consistent signal transmission.
- Dual Overload-Protection Diaphragm Resists High-Pressure Shock: Featured with dual overload-protection diaphragm structure, this differential pressure transducer supports up to 40MPa unidirectional overpressure (16MPa standard). It absorbs instantaneous pressure impact and pressure surge, protects the sensor core, and extends service life for heavy-duty applications.
- High-Precision Sensing Core & Premium Industrial Materials: Equipped with a high-accuracy capacitive sensor and 316L stainless steel measuring base with helium-tested leak-proof sealing. Dual display structure and waterproof cable gland enable long-term durable field deployment.
- Full-Isolation Circuit for Excellent Anti-Interference Performance: Built with a full-isolation circuit design, the capacitive differential pressure sensor maintains stable signal output at complex industrial sites. Strong electromagnetic interference resistance ensures accurate and consistent measurement data in harsh industrial control environments.
- Triple-Protection Design for Long-Term Stable Operation: This capacitive differential pressure transducer adopts a triple-proof coated PCB and strict aging treatment to minimize performance drift from environmental changes and long-duration operation. It delivers stable and reliable performance in high-temperature, high-humidity, and corrosive working conditions.
Application
This capacitive differential pressure transducer delivers measurement for diverse industrial scenarios. It supports pressure holding monitoring of sealed storage tanks, pressure tracking for municipal water supply pressurization, liquid level detection of evaporators, and monitoring on oil platforms within hazardous environments.
Urban Water Supply
Evaporator Liquid Level
Petroleum Process
Sealed Storage Tank
| Model | SISCO-DPS-HK-DP3851 |
| Output Signal | 4~20 mA DC |
| Transmission Form | Two-wire system |
| Accuracy - Linear Output | ±0.075% ~ ±0.1% (span ratio 1:1) |
| Measuring Medium | Liquid, Gas, Steam |
| Power Supply | 10.5 ~ 42 VDC |
| Ingress Protection | IP65 |
| Accuracy - Evolution Output | ±(0.2% of calibrating measuring range + 0.05% of upper limit) |
| Stability | DP span code 3,4,5: ±0.2% of the highest span; other span codes: ±0.25% of the highest span |
| Starting Time | At most 2 seconds for minimum damping |
| Effect of Static Pressure (DP) | ero error: ±0.25% of highest span for 14 MPa; ±0.5% of highest span for span 3 |
| Separation Spacer | 316L stainless steel, HC-276, Monel or Ta |
| Exhaust Valve | 316 SS, H alloy or Monel |
| Technical Flange & Connector | 316SS, H alloy or Monel |
| Filling Liquid | Silicone oil |
| Bolt | Cadmium-plated carbon steel |
| Outer Shell / Electronic Circuit | Low Cu Al |
| O-Ring | Acrylonitrile-butadiene rubber, fluorine rubber |
| Painting | Polyurethane |
| Pressure Connection Part | 1/4-18 NPT (joint thread in pressure room); 1/2-14 NPT (joint thread in pressure guiding joint) |
| Electric Connecting Component | With on-the-spot online testing terminal |
| Operation Temperature | Smart: -20°C ~ +85°C; Analogue: -25°C ~ +85°C |
| Storing Temperature | -40°C ~ +104°C |
Dimensions (unit: mm)
Connection
Q1: What is a capacitive differential pressure transducer?
A1: A capacitive differential pressure transducer is a pressure measurement device that detects the difference between two pressure inputs and converts it into a proportional electrical signal. It is commonly used for industrial pressure, flow, level, and filter monitoring.
Q2: What can this capacitive differential pressure transducer measure?
A2: This capacitive differential pressure transducer is designed to measure pressure differences in liquids, gases, and steam. By comparing pressure at two points, it can also be used for flow measurement, liquid level monitoring, and industrial process control.
Q3: Is this capacitive differential pressure transducer suitable for outdoor use?
A3: Yes. The capacitive differential pressure transducer has an IP65 ingress protection rating, protect dust and water jets. Proper installation and cable sealing are still recommended for long-term outdoor operation.
Tips: Where can this capacitive differential pressure transducer be installed?
This capacitive differential pressure transducer can be installed in industrial pressure measurement and process control systems, including process equipment, HVAC systems, tanks, and flow measurement setups.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
Shop on sisco.com for all of your industrial test and measurement equipment & accessories including portable detectors, meters, testers, scales, etc.
