• Bellofram T1000 I/P Pressure Transducer 961-075-000

Bellofram T1000 I/P Pressure Transducer 961-075-000

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The Marsh Bellofram Type 1000 is an electro-pneumatic transducer that reduces a supply pressure to a regulated output pressure directly proportional to a converted electrical input signal. The Type 1000 accepts a wide range of supply pressures, ranging from a minimum of 3 psig (0.2 BAR) above the maximum output up to 100 psig (6.9 BAR). An integral pneumatic volume booster provides high flow capacity (up to 12 SCFM/339 slpm). Model selections include general purpose, NEMA 4X Type, extended range, high relief, intrinsically safe, and explosion proof. The 4-20 mA input, 3-15 PSIG output model can be recalibrated to provide 3-9 PSIG or 9-15 PSIG output for split ranging applications.


  • Lightweight and Low Cost
  • Built-in Volume Booster
  • Small Size
  • Field Reversible
  • Low Air Consumption
  • Mounts at Any Angle
  • Convenient External Span & Zero Adjusts (Except for Explosion Proof Models)
  • Wide Supply Pressure Range
  • Low Supply Pressure Sensitivity


  • Valve Actuators
  • Damper and Louver Actuators
  • Valve Positioners
  • Controllers
  • Relays
  • Air Cylinders
  • Clutches and Brakes
  • Liquid, Gas and Slurry Processing Instrumentation
  • HVAC Systems
  • Paper Handling Controls
  • Textile Processing Systems
  • Energy Management Systems
  • Petrochemical Processing Systems
  • Split Ranging

Product Specifications

Supply Pressure Range:3 PSIG (0.2 BAR) above max. output to 100 psig (7 BAR)
Supply Pressure Sensitivity:±0.15% of span per 1.5 PSIG (0.1 BAR)
Linearity (terminal based):<1.0% of span
Repeatability:<0.5% of span
Hysteresis:<1.0% of span
Minimum Flow Rate at Midrange 100 PSIG / 7 BAR:12 SCFM (339 SLPM)
Exhaust Capacity @ 5 psig (0.4 BAR) above setpoint:2 SCFM (56.5 SLPM)
Air Consumption (max) at Midrange:0.1 SCFM (2.8 SLPM)
Port Size (pneumatic / electric):1/4 NPT and 1/2 NPT
Size:inches: 2-1/8" X 2-1/8" X 4"
mm: 54mm X 54mm X 101
Weight:2.1ln. / 0.95 Kg

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