DAVTRON M303 Series OAT / Voltmeter

SKU
2897, 3059
In stock
$247.00
-
+
Overview

DAVTRON M303 Series OAT / Voltmeter

Manufacturer Part Number:

M303-2 Round Mount - SKU 3059

M303-1 Front Mount - SKU 2897

Davtron M303 Series OAT / Voltmeter

General Description

The digital O.A.T. replaces one of the most difficult instruments to read in the cockpit, and it is particularly helpful for night or IFR flying.

Features

• Light Weight
• 2¼ Standard Mount Or Front Mount
• Automatic Dimming
• Miniature Remote Probe
• Sunlight Readable Displays
• Outside Air Temperature (°F)
• Outside Air Temperature (°C)
• Aircraft Voltage With Alarm
• Laser Engraved Faceplate
• FAA–PMA Approved

Installation Eligibility

Beech 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, 35–33 and 35–A33

Operation

A single push–button on Model 303 causes the digital display in automatic rotation to show its three functions of: voltage, outside air temperature (Fahrenheit), outside air temperature (Centigrade).

When the radio master switch of the aircraft is first turned on, The Model 303 always reads out the aircraft voltage to the nearest tenth of a volt. A code letter E indicates it is in the voltage function (EMF). To display outside air temperature in degrees Fahrenheit, the button is pressed, and the letter F appears to indicate this mode. The next press of the button displays C for outside temperature in degrees Centigrade.

The indicator remains in the mode selected as long as aircraft power is on. Any mode can be selected as fast as one can depress the switch. The mode selection will always sequence in the same manner (F C E) as indicated on the instruments face.

The digital outside temperature function replaces one of the most difficult–to–read instruments in the cockpit. The pilot may relate to outside air temp. in degrees Fahrenheit, then instantly change the display to degrees Centigrade for aircraft manual input, etc.

The voltage function of the indicator allows the pilot to monitor his electrical system precisely.

By monitoring the voltage he can anticipate a low voltage condition, unlike a warning light which tells only that this condition has already occurred. Also, the pilot can know with more accuracy the amount of capacity remaining in the battery.

The voltage at which a battery is being charged is also of greatest importance, since over–charging can lead to excessive water loss and battery failure. In brief, the voltage function reveals valuable information which helps the pilot obtain more reliable and better service from the electrical system.

About Davtron

Davtron's design and manufacturing of avionics instruments began in the late 1960s when digital technology was just beginning. Dave Torresdal, a young pilot in Redwood City, California had an idea for a better way to tune an ADF indicator. He designed, engineered, and flight tested a digital indicator in his 1958 Commanche, and soon other local pilots were clamoring to buy one. Dave's second product was the 811B digital clock which has sold over 40,000 units worldwide and is still in production today.

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Technical Data

 
Temperature –40°C to +100°C
–40°F to +212°F
Operating Temp –25°C to + 60°C
Voltage Range 10 to 32 Volts ± 0.2 Volts Typ.
Input Voltage 14 to 28 Volts
Input Current 100 mA max.
Weight 5 ounces

Davitron M303 Digital Temperature Gauge
Davitron M303 Digital Temperature Gauge

Installation

The 303 is available in two mounting styles: 303–1 as a small panel mount, and 303–2 as a standard 2–1/4 round mount.

The instrument will operate on 14 or 28 volts and requires a maximum of .1amps. The temperature sensor mounting should be in a place that would be free of exhaust gases or cowl flaps airflow. An ideal place is 2 feet out from the wing root on the bottom of the wing. The stainless steel probe is supplied with a 12ft shielded cable and all mounting hardware. Leads may be shortened or extended without affecting calibration

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