PTA-6M
Tachometer Converter
Description
PTA-6M tachometer converter
PTA-6M is an electronic tachometer converter in the Power Transducers category and is used in TSA-6M tachometric signalling equipment. It forms part of a system that monitors the rotational speed of an auxiliary-power-unit or engine shaft and passes the processed signal to related indication and control circuits. The unit is not a standalone cockpit indicator; it works within the tachometric equipment set.
Its designation is relevant where a matching TSA-6M installation is being maintained. Confirm the aircraft installation, connector configuration, documentation and exact system version before ordering.
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How PTA-6M works in TSA-6M equipment
In the documented TSA-6M arrangement, the DTE-5T tachometer sensor generates an electrical signal whose frequency follows shaft speed. PTA-6M receives the system signal and works with the ITA-6M indicator. Together, the equipment provides continuous remote indication of speed as a percentage of nominal value and discrete outputs at 45%, 70%, 90% and 105% of nominal speed.
These defined thresholds are used by the control system during auxiliary-power-unit operation. The converter therefore belongs to the tachometric signalling chain, not to a general electrical power-conversion system.
Related equipment and installation
The confirmed adjacent units are the DTE-5T tachometer sensor and the ITA-6M family indicator. The functional chain is DTE-5T sensor → PTA-6M converter → ITA-6M indicator and TSA-6M control circuits. Exact wire routing and physical location depend on the aircraft maintenance documentation.
For the Tu-134A installation described in technical material, the converter is installed on the right side near frame 49 and supplied by the 27 V DC network. This note is specific to that installation and must not be transferred automatically to another type.
Documented applications of the tachometer converter
Maintenance and parts material identifies TSA-6M equipment including PTA-6M on Tu-154, Tu-134A, Yak-42, Il-76, Mi-26 and Mi-8MTV-1 aircraft. The unit is also associated with the TA-6/TA-6A auxiliary-power-unit tachometer installation. Confirm applicability against the parts catalogue or maintenance manual for the individual aircraft and modification.
Identification and ordering
Search forms include PTA-6M, PTA 6M, ПТА-6М and ПТА 6М. The supplied photographs show the actual housing, connector end and mounting lugs; the source image carries the marking «ПТА-6М». Reliable open-source data for individual dimensions, mass, connector pin count and power consumption were not found, so those values are not stated.
Please request a quotation with the exact designation, aircraft type, TSA-6M configuration, required condition and documentation requirement.
PTA-6M: identification and purpose
PTA-6M is classified as a Tachometer Converter and converts a rotational-speed-related signal within the applicable equipment. Select it by the complete designation, series, execution, marking and approved documentation. Similar lettering, housing or connector geometry does not establish identical operating data.
This historical category contains several types of transducing devices. PT, PO and PTS products relate to electrical-power conversion, while PMI, PMT and PMM designations identify vacuum-gauge transducers. Each page therefore follows the actual product function rather than the broad category name. A suffix, series number or extra letter can indicate a materially different circuit, pressure range, rating or interface.
Function and operating circuit
The item converts a rotational-speed-related signal within the applicable equipment. Exact input and output conditions depend on the execution. For a power converter, verify voltage, current type, frequency, phase arrangement, rated output, connectors and cooling. For a vacuum transducer, verify the measurement principle, pressure range, operating mode, vacuum connection and compatible measuring instrument.
Numerical values retained from the original catalogue record appear in Technical Details and must be compared with the passport for the actual unit. An aircraft platform or installation system is not assigned by analogy when a reliable source is unavailable.
Selection and compatibility checks
Before replacement, compare the primary and alternative designations, series, input and output ratings, dimensions, mass, connectors, mounting, cooling and documented environmental limits. For a vacuum sensor, additionally compare the conversion constant, emission current or heater resistance where the passport specifies those values.
Related members of one family may use different voltage, frequency, power, pressure range, mounting interface or purpose. The related links below support catalogue navigation and do not establish interchangeability. General technical background is available under Tachometer Converter.
Incoming inspection and installation
Check the marking and supporting records, housing, connectors, terminals, vacuum fitting, mounting points, seals and any evidence of overheating, impact or corrosion as applicable. Bench testing must follow the documentation for the exact execution; an improvised test voltage or vacuum regime can damage the product.
Install the unit only in the intended circuit with the documented polarity, supply mode, load, cooling and safety provisions. After installation, complete the prescribed functional check. External integrity alone does not demonstrate serviceability or calibration.
Related catalogue positions
Functionally related catalogue products include PE-11M, PO-750A-2S, PTS-800BM, PMI-10-2. They are selected by actual type and family for navigation and do not imply compatibility. More positions are available in the Power Transducers category.
Enquiry information
An enquiry for PTA-6M should state the exact designation, quantity, required condition, marking photograph, delivery scope and required documents. When available, include the designation of the equipment and item being replaced. Price, actual availability, lead time and condition of a specific unit are confirmed separately.
Technical details
Product Type: Tachometer Converter
Primary Designation: PTA-6M
Alternative Designations: PTA-6M; PTA 6M; ПТА-6М
Function: converts a rotational-speed-related signal within the applicable equipment
Selection Basis: Exact designation, execution, marking and documentation for the specific equipment
Application: Only as supported by the passport, illustrated parts catalogue or approved installation documentation
Interchangeability: Not established by a related designation, matching base, housing or appearance alone
Inspection: Verify electrical ratings, contacts or connector, mounting, construction and required operating mode
Enquiry Data: Designation, quantity, condition, marking photograph, delivery scope and required documents
Documentation: Product passport and approved operating or repair documentation
Category: Power Transducers
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Retained Technical Data:
Product Type: Tachometer converter
Designation: PTA-6M
Alternative Designations: PTA 6M; ПТА-6М; ПТА 6М
Function: Signal processing within TSA-6M tachometric signalling equipment
System: TSA-6M tachometric signalling equipment
Associated Equipment: DTE-5T tachometer sensor; ITA-6M, ITA-6MB or ITA-6MS indicator depending on TSA-6M variant
Signal Thresholds: 45%; 70%; 90%; 105% of nominal shaft speed within TSA-6M equipment
Power Supply: 27 V DC for the documented Tu-134A installation
Operating Temperature: −60 °C to +60 °C for TSA-6M equipment
Vibration Resistance: 10–30 Hz; acceleration 5 g for PTA-6M in TSA-6M specification
Service Life: 6 years for the converter in TSA-6M specification
Operating Life: 4,500 flight hours for PTA-6M in TSA-6M specification
Compatible Aircraft: Tu-154; Tu-134A; Yak-42; Il-76; Mi-26; Mi-8MTV-1 — confirm by aircraft documentation
Installation: Right side near frame 49 on documented Tu-134A installation; other locations require confirmation
Dimensions and Mass: Reliable individual data in open sources were not found
Technical Documentation: TSA-6M maintenance documentation, aircraft parts catalogue and test records when available
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms