A small volume of silicone oil transfers the pressure from the diaphragm to the strain bridge. The construction provides a very rugged transducer with exceptional accuracy, stability and thermal effects. A unique design ruggedizes the transducers by providing secondary fluid containment in the event of a diaphragm rupture.

At our state-of-the-art facilities, automated test equipment performs pressure and temperature cycling on 100% of the PX409 transducers. The transducers are then calibrated using extremely high accuracy equipment and a 5-point NIST traceable calibration certificate is included with each transducer. The inherent stability of the piezoresistive core provides excellent long term stability, repeatability and very low thermal effects at the price of much lower performance transducers. Standard features of the PX409 Series also include protective features built into the electronics and the pressure element. Reverse polarity, EMC, and power supply fluctuation protection are standard on all models. For Intrinsically Safe and CSA ratings see model PXM509.

Features

Accuracy: Standard ±0.08% FS, BSL, Linearity, Hysteresis and Repeatability Combined
(compound ranges calibrated only in positive direction)
Operating Temperature:
mV/V Output: -45 to 121°C (-49 to 250°F)
Amplified Output: -45 to 115°C (-49 to 239°F)
Compensated Temperature Range:
25 to 350 mB: -18 to 85°C (0 to 185°F)
1 to 350 bar: -29 to 85°C (-20 to 185°F)
Thermal Accuracy: % span shift over compensated temperature range
25 to 350 mB:
Zero: ±1.0% max
Span: ±1.0% max
1 to 350 bar:
Zero: ±0.50% max
Span: ±0.50% max