Key Features
Simultaneous Dual Measurement
Measures static pressure and differential pressure at the same time, eliminating the need for two separate transmitters and reducing system complexity.
Dual Analog & Switch Outputs
Provides two independent 4-20mA current outputs (one for static pressure, one for differential pressure) plus two PNP switch outputs for alarm or control functions.
Same-Side Pressure Ports
High and low pressure ports are located on the same side of the housing, simplifying piping and installation in tight spaces.
Compact & Lightweight
Weighs only 590g with a compact footprint, making it easy to integrate into mobile equipment and space-limited installations.
Vibration & Shock Resistant
Rated for 10g vibration (20-2000Hz) and 100g mechanical shock (11ms), ensuring reliable operation in harsh industrial environments.
Wide Pressure Range
Differential pressure ranges from 0-10kPa to 1MPa, with static pressure ranges up to 10MPa to suit diverse application requirements.
Product Overview
•The multi-parameter differential pressure transmitter is a compact, industrial-grade instrument designed for applications that require simultaneous monitoring of both static line pressure and differential pressure. Traditional solutions require two separate transmitters-one for each measurement-but this multi-parameter transmitter integrates both sensing elements into a single housing, delivering two independent 4-20mA analog outputs and two PNP switch outputs.
•At the heart of the device is a compound piezoresistive pressure sensor that detects both the differential pressure between the high and low ports and the static pressure of the system. The high and low pressure ports are conveniently positioned on the same side of the unit, which simplifies plumbing and reduces installation time in confined spaces. A dedicated signal processing circuit converts the sensor signals into standard 4-20mA current loops for each parameter.
•With a differential pressure range from 0-10kPa to 1MPa and a static pressure range up to 10MPa, this compound differential pressure transmitter is built for versatility. Its 316L stainless steel wetted parts ensure compatibility with a wide range of liquids and gases. The compact 590g housing, combined with 10g vibration resistance and 100g shock resistance, makes it particularly well-suited for offshore power generators, marine equipment, and other demanding industrial environments where space is limited and reliability is critical.
Specifications
| Measurement Parameters | Differential pressure + Static pressure (simultaneous) |
| Differential Pressure Range | 0 ~ 10kPa ... 1MPa (custom ranges available) |
| Static Pressure Range | 0 ~ 10kPa ... 10MPa (custom ranges available) |
| Pressure Type | Sealed gauge |
| Overload Pressure | 1.5× full-scale pressure |
| Burst Pressure | 3× full-scale pressure |
| Wetted Materials | 316L stainless steel (compatible liquids and gases) |
| Supply Voltage | 20V ~ 30V DC |
| Analog Output (Static Pressure) | 4-20mA (3-wire) |
| Analog Output (Differential Pressure) | 4-20mA (3-wire) |
| Switch Outputs | 2 × independent PNP |
| Load Resistance | ≤ (U - 8V) / 0.02A (Ω) |
| Total Error Band | ±5% FS (includes terminal-based error, nonlinearity, hysteresis, and repeatability) |
| Response Time | 5ms |
| Insulation Resistance | ≥ 100MΩ @ 100V DC |
| Operating Temperature | -40°C ~ +85°C |
| Compensated Temperature | 0°C ~ +50°C (temperature error: ±5% FS) |
| Storage Temperature |
-40°C ~ +85°C |
| Long-Term Stability | ±0.5% FS per year |
| Vibration Resistance | 10g @ 20Hz ~ 2000Hz |
| Mechanical Shock | 100g @ 11ms |
| Electrical Connection | M12 × 1 connector |
| Pressure Connection | G1/2 male thread (custom threads available) |
| Weight | Approx. 590g |
Physical Structure
Electrical Connection
| Pin | Function | Description |
|---|---|---|
| 1 | Power Supply Positive | V+ (20-30V DC) |
| 2 | Common Ground | GND |
| 3 | PNP Switch 1 | Differential pressure switch output |
| 4 | Pressure Output | Static pressure 4-20mA output |
| 5 | Differential Pressure Output | Differential pressure 4-20mA output |
| 6 | PNP Switch 2 | Differential pressure switch output |
| 7 | Ground | Case ground |
| 8 | N/C | Not connected |
Application
The multi-parameter differential pressure transmitter is particularly suited for applications where both system pressure and differential pressure must be monitored simultaneously, and where space and weight constraints are critical. Its robust vibration and shock ratings make it a dependable choice for offshore power generation, marine equipment, and heavy industrial machinery, while its dual PNP switch outputs simplify alarm and control integration.
Offshore power generator monitoring
Marine & shipboard pressure systems
Hydraulic & pneumatic systems
Filter differential pressure monitoring
Liquid level measurement in pressurized tanks
Pump & compressor performance testing
FAQ
Q: What is a multi-parameter differential pressure transmitter?
A: A multi-parameter differential pressure transmitter is a single device that can measure two pressure parameters at the same time-typically static (line) pressure and differential pressure. Unlike conventional transmitters that require separate units for each measurement, this device integrates both sensing elements and provides independent output signals for each parameter, reducing installation cost and complexity.
Q: How does it differ from a standard differential pressure transmitter?
A: A standard differential pressure transmitter measures only the difference between two pressure ports. This multi-parameter model additionally measures the static or line pressure of the system. It provides two 4-20mA outputs-one for differential pressure and one for static pressure-plus two PNP switch outputs for alarm or control functions.
Q: What are the PNP switch outputs used for?
A: The two independent PNP switch outputs can be configured to trigger at specific pressure thresholds. They are commonly used for high/low pressure alarms, pump or valve control, and interlock functions. Because they are PNP (sourcing) type, they switch the positive supply voltage to the load, making them compatible with most industrial control relays and PLC inputs.
Q: Why are the high and low pressure ports on the same side?
A: Placing both ports on the same side simplifies piping and installation, especially in compact equipment or skids where space is limited. It reduces the need for complex manifold arrangements and shortens the tubing runs required to connect the transmitter to the process.
Q: How do I select the right pressure ranges for my application?
A: Select differential and static pressure ranges where your normal operating pressure falls between 50% and 90% of the full-scale range for optimal accuracy. Consider the maximum system pressure (including transients) and ensure it does not exceed the overload rating of 1.5× full scale. Our engineering team can assist with range selection-contact us for a free consultation.
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