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H301 Ss
Environmental Control System Tester The H301 Series Environmentl Control System (ECS) Tester mesures n isplys prmeters require
to test n troubleshoot ircrt heting n ir
conitioning systems. These prmeters inclue
tempertures, pressures, resistnces, aC n dC
voltges, n dC currents.
House in wheele ccessory cse tht hols
cbles, pressure hoses, pters n temperture
probe, the tester comes complete with ll require
instrumenttion to mximize mission reiness.
Temperature System
Typiclly, the ECS Tester mesures tempertures o the
cockpit ir supply, the vionics cooling ir, the mniol
n mbient ir. a precise, internlly-generte
temperture signl is lso vilble to veriy proper
opertion o the H301 temperture mesuring circuitry.
Pressure System
The pressure mesuring system inclues our iferent
pressure trnsucers tht mesure rom 0 to 20 inches
o H20 n rom 0 to 15, 0 to 60, n 0 to 300 psig. a
single pressure cn be connecte to the 15 inch H20
trnsucer, while our pressures, selectble by eck-
mounte vlves, cn be connecte to ech o theother three psig trnsucers.
Multimeter
The ECS Tester lso inclues n utomtic rnging
multimeter tht permits the opertor to mesure
voltges, currents n resistnces to i in
troubleshooting vlves, controllers n sensors in the
environmentl control system.
Howell Instrument
8945 South Free
Fort Worth, Texas
www.howellinst.
817-336-741Fax: 817-336-7
info@howellinst.
Portable engine teSt SetS & trimmerS
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Temperature
Input Signal Platinum resistance probe
Range –65 to 999 °F in 1 °F incrementsPressure
Input Pressure
Transducer Ranges 0 to 15.0 inches H20
0 to 15.0 psig
0 to 60.0 psig
0 to 300 psig
DC Current
Range 0 to 50.00 mA
0 to 500.0 mA
DC Volts
Range 0 to 500 mV
0 to 1 VDC
0 to 5 VDC
0 to 50 VDC
AC Volts
Range 0 to 500 VAC
ResistanceRange 0 to 100 ohms
0 to 1,000 ohms
0 to 10,000 ohms
0 to 100,000 ohms (10 ohm increments)
Power Required 28 (±4) VDC, 1.5A maximum
Dimensions (excluding handle and wheels)
Instrument Case 9.75” H x 16 “ W x 9.75” D
Accessory Case 28” H x 21.5” W x 22” D
Weight 63.5 lbs (including accessories)
©2009 Howell Instruments, Inc. PET301
Howell Instruments, Inc. • 8945 South Freeway • Fort Worth, Texas 76140www.howellinst.com • 817-336-7411 • Fax: 817-336-7874 • [email protected]
Display and Deck Lighting
The ECS Tester uses 0.4-inch high, seven segment, LEd
isply. a isply test button n isply brightness control
re lso provie, n light locte in the li o the ECS
Tester provies eck lighting uring nighttime opertion.
Spcfcs
Portable engine teSt SetS & trimmerS
