Fuel Management Systems

Flowmeters

Rugged and accurate, these TSO-C44a qualified turbine flowmeters are designed to be mounted directly on an aircraft engine within a high-pressure fuel loop. Models are available to measure flowrates from 0.2 to 17 gallons per minute, and when ordered with an integral temperature sensor, 100 to 7000 pounds per hour. Each device is individually calibrated to be accurate to within +/- 1 percent at cruise conditions.

Features:

• Lower cost - simple design
• Low pressure drop
• Seamless fuel path
• Integrated temperature sensor

Specifications:

The Ketema series of Flowmeters conform to the requirements of FAA document TSO-C44a.

Flowmeter Models:	Magnetic pickoff 300 series    (integral temperature sensor) 100 & 200 Legacy series   (no temperature sensor) Modulated carrier 500 series   (integral temperature sensor)
Flow Ranges (pounds per hour):	50 to 7000 pounds per hour in 6 overlapping ranges 1/2 AN fittings 50-600   100-850   160-1400 5/8 AN fittings 240-2700   400-4000 3/4 AN fittings 500-7000
Output:	Magnetic pickoff 100, 200, 300 series sine wave frequency proportional to flowrate approximately 40 mV pk-pk at minimum flowrate Modulated carrier 500 series Modulated carrier (requires 50 KHz carrier generator and detector circuit)
Construction:	Stainless steel for all wetted parts Fittings per SAE AS4395
Accuracy:	+/- 1% at cruise flowrate (individual linearity curves available for each model)
Repeatability:	+/- 0.1%
Connector:	500 Series Per MS 3112E8-4P 300 Series Per MS3113H-8-4P 100, 200 Series Per MS 3106E-10SL-45
Temperature Sensor:	300 Series includes an integrated fuel temperature sensor 1000 ohms @ 25°C
Temperature Environment:	-55 to 125°C operating temperature
Pressure Drop:	6 PSID maximum at maximum linear flowrate (rotor locked)
Operating Pressure:	1500 PSI maximum