TNV-45K

Retained product information

Thermometer TNV-45K is designed to measure the temperature of the outside air.

TNV-45K: purpose and identification

TNV-45K is a Outside-Air Thermometer that measures outside-air temperature within the applicable instrument set. The exact execution is determined by the complete marking, series and documentation. A similar housing, common opening characters or a related function does not establish matching ratings.

This category contains different equipment classes: temperature receivers, thermometers, air- and liquid-pressure receivers, regulators and individual measurement units. The actual function of the item is therefore more important than the broad category name. Read the designation with every letter, digit, hyphen, version and series reference preserved.

Function in the measurement system

The item measures outside-air temperature within the applicable instrument set. It is not necessarily a stand-alone indicator; depending on the design, it may operate with a remote indicator, regulator, pressure line or measurement set. The applicable documentation defines the circuit, medium, supply, range and connection arrangement.

For a temperature item, confirm the sensing principle, monitored medium, range and compatible indicator. For a pressure receiver, also confirm pressure type, channel count, ports, heating, drainage and connected lines. An RF measurement receiver must be selected by its own radio-frequency data rather than by requirements intended for an aircraft pressure or temperature sensor.

Selection by designation

Before ordering, compare the primary and alternative designations, execution, range, output, electrical supply, connector or ports, mounting, dimensions and mass whenever documented. Numerical values in Technical Details are retained from the previous card or a supporting source and must be checked against the passport for the actual unit.

Related modifications may differ in channel count, resistance, calibration, working medium, measurement limit, heater voltage or mounting interface. Do not treat them as interchangeable without an explicit documentary reference. General technical background is available under Outside-Air Thermometer.

Pre-installation inspection

Incoming inspection includes checking the marking and documentation and examining the housing, sensing element, connector, pressure ports, drainage holes, mounting points and seals as applicable. Reject or investigate cracks, deformation, corrosion, contaminated passages and damaged contacts. Test the unit under the approved procedure for the exact execution.

After installation, check line tightness or electrical continuity, routing of pressure lines and wiring, and then perform the prescribed functional test. External integrity alone does not establish measurement accuracy. Assign an aircraft application only when supported by a passport, illustrated parts catalogue or maintenance document.

Related catalogue positions

Functionally related products include TNV-45, TST-13, P-125-1, TUE-8A. They are grouped by measurement function for navigation and do not imply interchangeability. More items are listed in the Pressure & Temperature Sensors category.

Enquiry information

An enquiry for TNV-45K should state the complete designation, quantity, required condition, marking photograph, delivery scope and required documents. When available, identify the associated indicator, regulator or system. Price, actual availability, condition, lead time and documentation are confirmed separately for the offered unit.