Applied Measurement | ADP21K Pressure Transducer
ADP21K Pressure Transducer

The ADP21K series is a rugged, high-precision wet-wet differential pressure transducer, purpose-built for demanding industrial applications where both pressure ports are exposed to fluid or gas. Utilising a mediaisolated design and advanced integrated circuitry, this transmitter delivers excellent stability, accuracy, and long-term reliability.

With pressure ranges available from 0–1 psid up to 0– 500 psid, and support for uni-directional or bi-directional measurement, the ADP21K is ideal for applications such as HVAC/R systems, water level sensing, filtration monitoring, and pneumatic control systems

Key Features:

  • Differential Measurement
  • Versatile Output Options
  • Fast Response Time
  • Robust Construction
  • Wide Pressure Range
  • High Durability

ADP21K Pressure Transducer Applications

  • HVAC and Building Automation Systems
  • Pneumatics and Air Handling Units
  • Energy and Power Generation Systems
  • Industrial Filtration and Fluid Flow Monitoring
  • Liquid Level Sensing in Sealed or Pressurised Systems

Product Specifications

Pressure Ranges Available 0 to 1 thru 0 to 500 PSID bi-directional or uni-directional
Output 0 to 5Vdc
0.5 to 4.5Vdc
4 to 20mA
0 to 10Vdc
Excitation 10 to 30Vdc
5Vdc
10 to 30Vdc
12 to 30Vdc
Model Specifications & Performance 21°C (at 70°F)
Accuracy <±0.4% FSO typ.
Proof Pressure 2X Range, dependant on port and material
4X range optional
Burst Pressure 5.0X Range, dependant on port and material
Line Pressure 1,000 PSI
Zero Offset ±0.5% FSO (may have orientation effect)
Span Tolerance ±1.0% FSO, ±0.5% FSO Optional
Response Time <2ms (typ.)

*Accuracy includes linearity (BFSL), hysteresis and repeatability

Wetted material 316L SST
Hastelloy C276
Internal Fill Fomblin Oil
Electrical Connection PTIH-10-6P standard, D38999/27YA35PN or Cable

Temperature

Compensated Range 0 to 70°C (32 to 158°F)
Standard with ±1.5 FSO/100°F thermal effect
Operating Range -40 to 105°C (-40 to 221°F)
Shock 100g, 11ms, half-sine
Vibration 20g (RMS), 20 to 2000Hz
Residual Unbalance 0.5% FSO at 70F typical (0.25% FSO for extra charge)
Combined Non-linearity Hysteresis 0.3% FSO (BFSL) typical (0.1% FSO for extra charge)
Combined Thermal and Zero Shift 1% FSO/100F typical (0.5% FSO/100F for extra charge)

ADP21K Datasheet.pdf