Sigma Tek, Inc.
Sigma Tek manufactures and distribute aviation instruments, accessories and control panels to the worldwide aviation industry.
- (800) 876-5272
(316) 775-6373 - (316) 775-1416
- requestinfo@sigmatek.com
- 1001 Industrial Rd.
Augusta, KS 67010
United States of America
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Product
AC Calibration Standard
1U647-001
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The 1U647-001 is a low cost calibration standard used to determine if a 1U632-100 or a 1U663-100 DMU requires factory calibration. Its portability makes it ideal for field-testing. The standard generates signals that simulate the aircraft’s resolvers, rotary variable transformers (RVTs), and linear variable displacement transformers (LVDTs). The unit also generates a pulse width modulated (PWM) signal, and routes the output of an ARINC 429 source to the different DMU input channels. The calibration standard connects directly to the DMU and replaces the output signals of an active extender card. Discrete switch settings simplify testing. The unit is housed in a rugged aluminum case.
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Product
Standard Attitude Gyroscopes
5000B-series
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The 5000B is an air-driven gyro that has a pictorial horizon mask and fixed airplane. The mask moves to indicate climb, dive, and bank. Bank and pitch attitudes are displayed so that the pilot’s sensing of the gyro indication is the same as the interpretation of the relation between the wings of the aircraft and the natural horizon during visual flight.
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Product
Electric Attitude Gyroscopes
5000EG-series
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The 5000EG gyro is based on our air-driven 5000B model, whose proven reliability has made it the industry standard for many years. There are two models available: 14 and 28 VDC. The rotor is precisely machined from a heavy-metal tungsten alloy, which has a higher mass than brass, contributing to the instrument’s demonstrated stability. The electric motor is driven by a built-in power inverter, and has an integrated air-erection mechanism. A warning flag is deployed upon loss of primary power. During acrobatic flights or short stops, the gyro’s mechanism can be caged whenever the knob is pulled.
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Product
Customized Indicator Cluster Gauge Kits
169CL-series
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Over the past 40 years, Sigma Tek has custom designed and manufactured reliable, proven instruments for virtually every type of aircraft that flies. This includes precision modular instrumentation configured to customer's exact specifications. Cluster modules measure 1.44" square, and can be arranged in almost any combination for optimum panel utilization. Individual modules are easily removed for calibration and service.
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Product
Multifunction Engine Gauge
1U417-series
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The three essential engine parameters are packaged in a 3” instrument. The 1U417 was derived from the Garwin 22-804 and is a direct replacement. As evidenced by its predecessor, the three most essential engine parameters have traditionally been the most requested by our customers.
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Product
Standard Airspeeds
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These airspeed indicators have unrestrained movements.These instruments are actuated by ram air and ambient atmospheric pressure obtained from the aircraft pitot and static pressure systems. A moveable pointer and a fixed dial indicate airspeed with the zero index at the 12 o??lock position. Temperature compensation is internal and there is no external zero adjustment. Pointer damping is internally adjustable.
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Product
Dual Fuel Gauge
1U432-series
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The 1U432 dual fuel gauge is packaged as a compact, 3” instrument. It has dual D’Arsonval movements that are driven by two resistive bulb transducers in the fuel tanks. The two opposing pointers stand out sharply from the non-reflective black background.
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Product
Autopilot Directional Gyroscopes
4000C/D-series
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The 4000C/D is an air-driven directional gyro with A.C. autopilot pickoffs. Left turns produce clockwise dial rotation and right turns produce counter-clockwise rotation. Two knobs control the gyro. The left knob is used to cage the unit, and the right knob is used to select the instrument’s heading. To change course, the right selector knob is pressed and turned to disengage the dial shaft and set the pointer to a new heading. Releasing the selector knob re-engages the pointer with the dial shaft. As the aircraft turns onto a new course, the pointer returns to its original position. The on-course position of the pointer is always at the top of the azimuth circle (0° on the dial with the aircraft headed north).
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Product
Engine Instruments
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Instruments designed to constantly measure operating parameters relating to the aircraft's engine(s).
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Product
Multifunction Engine Gauge
1U378-series
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This 3” instrument combines the three essential engine parameters in a compact package. Rugged D’Arsonval meter movements with two jewels are used to indicate cylinder head and oil temperatures. A brass bourdon tube mechanism precisely indicates oil pressure. A selection of fittings is available to simplify installation.
