OVERVIEW

The fixture is used to calibrate and test air-data probes with a 3/4" outside diameter and a five-hole hemispherical tip, such as the ARIM320. The pressure calibration fixture can be used to calibrate and test standard pitot-static probes and five-hole probes. For testing more common pitot-static probes, tubing is only required to be connected between the pitot connector on the forward face of the calibration fixture, and the static connector furthest aft on the side of the fixture. If a five-hole probe is being tested, tubing must also be connected to the pair of angle-of-attack (alpha) connectors in the vertical plane and sideslip connectors in the horizontal plane. The fixture is designed such that the static connector is on the same side as the Alpha+ connector. This allows the user to orient the calibration fixture correctly when installing it on the probe.

Calibration fixtures utilize 1/8" OD quick connect / disconnect fittings to interface to the interconnecting pressure tubing. To install the tubing simply insert it as far as possible into the fitting and it will lock in place. To disconnect, push down on the orange collar on the fitting and pull the tubing out.

Install the calibration fixture by sliding it over the boom tube with the static-pressure fitting pointing up. This will ensure that the remaining pressure fittings are oriented correctly relative to the pressure ports on the measurement boom. Slide the fixture as far as it will go onto the boom and then apply a small amount of longitudinal force to the fixture to compress the O-rings against the nose and seal the pressure ports. While applying this force, rotate the collar located at the rear of the calibration fixture clockwise, when looking at the front of the fixture, to lock the fixture in place.

The front of the fixture is manufactured from clear acrylic to help ensure the pressure taps of the calibration fixture are correctly aligned with the five pressure ports on the probe tip.

SPECS

Physical

Dimensions: 4.28 in. X 2.21 in. X 1.97 in.

 (108.71mm X 56.13 mm X 50.03 mm)

Weight: 0.42 lbs. (190 g)

Material: Aluminum 6061-T6, Clear Acrylic, and Plastic

Surface Finish: Red Anodized

Pressure Input Connectors: SMC Connectors (P/N: SMC KQ2H01-32)

Applicable Tubing: 1/8" O.D

Max Applicable Pressure: 20psi (137.89kPa)

DOWNLOADS

BROCHURES, USER MANUALS, AND ICDs

MECHANICAL DRAWINGS

• M320 Fixture Assembly Drawing.pdf

SPEC SHEETS

• M320 Pressure Calibration Fixture Technical Specifications.pdf

CAD

• AP203 STEP File:Pressure Calibration Fixture - M320.stp
• AP214 STEP File:Pressure Calibration Fixture - M320.stp
• Parasolid File:Pressure Calibration Fixture - M320e.x_t

FIRMWARE

GALLERY