PPT93TH Miniature Differential Pressure Transducer
The PPT93TH miniature differential pressure transducer measures the difference between two pressures in a stainless steel body just 0.93 inches in diameter. Designed for OEM equipment where space is limited, it threads directly into a manifold or a pair of fittings through two M6x1 ports and delivers a calibrated, temperature compensated signal from -40°C to +85°C.
Available in differential ranges from 1 to 300 PSID (pounds per square inch, differential), the PPT93TH offers a choice of 0.5 to 4.5 V ratiometric analog or 14-bit I²C digital output with a ±0.2% FS total error band. Its welded SS316L housing is epoxy potted, rated IP65, and qualified to MIL-STD-810G for vibration and shock.
Miniature Differential Pressure Transducer for Compact Manifold Designs
Many systems care less about absolute pressure than about the difference between two points: the pressure drop across a filter, the change across an orifice plate, or the pressure at the bottom of a sealed tank compared to the space above the liquid. A differential pressure transducer reads both pressures at once and reports only the difference, so the host system does not need two sensors and a calculation to get the same result.
The PPT93TH places both pressure ports on one end of the body, on 0.51 inch centers. The high side port is laser marked H and the low side port is marked L, and the output rises as the H port pressure rises above the L port pressure. Because the ports thread directly into the mating hardware, the sensor can mount right at the measurement point without tubing runs or adapters.
Key Features of the PPT93TH Miniature Differential Pressure Transducer
- Differential pressure ranges: 1 to 300 PSID
- Output options: 0.5 to 4.5 V ratiometric analog or 14-bit I²C digital (address 0x28)
- Accuracy: ±0.2% FS total error band, the worst case error across -40°C to +85°C
- Response: 1 kHz
- Compact body: 0.93 in diameter by 1.3 in long
- Pressure ports: Two M6x1 male threaded ports, laser marked H and L
- Port seals: Silicone (VMQ) O-rings
- Housing: Welded SS316L, epoxy potted, IP65 rated
- Proof and burst pressure: 2× and 4× full scale
- Vibration and shock: MIL-STD-810G
- EMI/EMC: MIL-STD-461G
- Electrical connection: 26 AWG tinned flying leads, 1 to 12 in
Every PPT93TH is factory calibrated and temperature compensated, so no correction is needed on the host side. For background on pressure measurement and calibration, engineers can reference NIST Pressure and Vacuum Metrology.
Rugged SS316L Construction
The PPT93TH is built for equipment that moves, vibrates, and works outdoors. The SS316L cap is welded to the housing and the internal electronics are epoxy potted, protecting the sensing circuitry from moisture and mechanical stress. The assembly carries an IP65 rating, meaning it is dust tight and protected against water jets.
The transducer is qualified to MIL-STD-810G for vibration and shock and to MIL-STD-461G for electromagnetic compatibility, making it well suited for mobile equipment, defense ground support systems, and heavy machinery. To learn more about how vibration affects sensor reliability, read our article on pressure sensor vibration.
The wetted materials are SS316L and silicone (VMQ), suitable for a wide range of liquids and gases. Media compatibility should always be evaluated for the specific fluid or gas, concentration, temperature, and operating environment. Alternative seal materials are available for OEM programs with aggressive or corrosive media.
Miniature Differential Pressure Transducer Applications
The compact size, wide differential range, and rugged construction of the PPT93TH make it suitable for a variety of OEM applications, including:
- Filter and clog monitoring
- Orifice and venturi flow measurement
- Liquid level in pressurized tanks
- Hydraulic and pneumatic systems
- Defense and aerospace ground equipment
- HVAC and process control
- OEM embedded systems
See how Phoenix Sensors supports autonomous aircraft sensors for military UAVs and HVAC pressure sensor solutions for OEMs.
Choosing the Right Phoenix Sensors Differential Pressure Transducer
Phoenix Sensors offers more than one approach to differential pressure measurement.
For low differential pressure applications with a digital output, explore the PPT91 Low Differential Pressure Transducer.
If your design needs a single port miniature sensor for gauge or absolute pressure, the PPT03M Series Miniature Pressure Transducer offers a 0.65 in body with pressure ranges up to 5,000 PSI.
The PPT93TH miniature differential pressure transducer is designed for applications that need true differential measurement in a compact, rugged stainless steel package, with direct port mounting and a choice of analog or I²C output.
Explore our complete line of OEM pressure transducers for additional ranges, outputs, and package styles.
Configure the PPT93TH for Your OEM Application
The PPT93TH can be configured around the needs of OEM production programs. Available options include custom bidirectional ranges such as -3 to +30 PSID, alternate I²C addresses, alternative port styles, seal materials, and lead lengths.
Phoenix Sensors supports OEM customers from initial sensor selection and prototypes through production. For applications that need further modification, learn more about our custom sensor capabilities.
