PSD90-3 Fuel Quantity Test Set

Contaminated Probe Testing

The PSD90-3 provides users with two methods; Auto and Manual, for detecting and isolating contaminated fuel probes caused by particulates, water, microbial growth, or other sources of contamination.

During normal capacitance measurements, the contaminated fuel probe detection function will automatically alert the user via a Percent of Error indication on the display and with a Contaminated Fuel Probe Detected LED on the front panel.

Once there is an indication of possible probe contamination, the user can manually test using the Check Probe function with a user-selectable percent of error limit which will illuminate the Contaminated Fuel Probe LED indicator if exceeded.

Aircraft Specific Interface

Each aircraft platform requires a unique interface to access the FQIS. The complexity of the fuel system determines the capability of the interface to allow for complete testing of the fuel quantity system. Contact VIAVI for the proper interface for your aircraft.

Key Features

• Measurement of capacitance, DC voltage, insulation resistance, and Distance to Fault (DTF) 
• Simulation of capacitance for indicator testing 
• Automatic contaminated fuel probe detection while performing normal capacitance tests 
• Manual troubleshooting of contaminated fuel probes using the CHECK PROBE function 
• Low Voltage/Low Current Mode allows isolation of intermittent or corroded connections 
• Megger and capacitance manual ranging modes assist in finding intermittent faults 
• REV DC (DC+) Mode measures capacitance from the DC+ side of the tank unit for complete testing DC capacitive fuel systems 
• Compatible with existing aircraft fuel quantity system interfaces 
• Closed box calibration using front panel controls 
• Self-test on power-up 
• Rechargeable battery or externally powered 
• Intrinsically safe design 
• Optional OEM DC option emulates PSD30-2AF OEM DC operation and DC capacitive measurement values. 

Options & Configurations