AVITON M737A Pulse Tachometer 12-15VDC 115MA

( Brand: Aviton ), ( Manufacturer Part Number: M737A ), ( Part Type: Tachometer )

Review AVITON Pulse Tachometer 12-15vdc Rev Pre owned

The **Aviton M737A Pulse Tachometer** is a precision-engineered, pre-owned industrial-grade instrument designed for high-reliability pulse-counting applications in automotive, aerospace, and manufacturing environments. This rugged, 12-15VDC-powered device operates on a minimal current draw of just 115mA, making it ideal for battery-powered systems or installations where power efficiency is critical. The M737A is a pulse tachometer, meaning it measures rotational speed by counting discrete pulses generated from sensors such as magnetic pickups, optical encoders, or Hall-effect sensors, providing accurate RPM (revolutions per minute) readings with exceptional consistency. Its analog output, typically in the form of a 0-5V or 0-10V signal, allows seamless integration with data loggers, dashboards, or control systems, while its digital interface supports RS-232 communication for advanced monitoring and logging applications. Built with a durable metal housing, the M737A is designed to withstand harsh operating conditions, including vibration, temperature fluctuations, and electrical noise, ensuring long-term reliability even in demanding industrial settings. Whether used for engine diagnostics, conveyor belt monitoring, or precision machinery control, this pre-owned unit retains its core functionality while offering a cost-effective alternative to new equipment. Its versatility extends to applications in racing, marine, and agricultural machinery, where accurate speed measurement is essential for performance optimization and safety. With proper maintenance, this pulse tachometer remains a dependable tool for professionals seeking high-precision speed monitoring in a wide range of mechanical systems.

### Pros and Cons of Buying a Pre-Owned Avion M737A Pulse Tachometer (12-15V DC, 115mA)

1. **Cost-Effective** Pre-owned units are significantly cheaper than new ones, making them an attractive option for budget-conscious buyers, especially for hobbyists, students, or professionals who don t need the latest features.

2. **Proven Reliability** The Avion M737A is a well-established model with a long history of use in aviation, automotive, and industrial applications. Many pre-owned units have been thoroughly tested and may come with documented maintenance records, reducing the risk of immediate failure.

3. **Compatibility** This tachometer is designed for pulse-input applications (e.g., magnetic pickup sensors, Hall-effect sensors, or optical sensors) and is widely compatible with engines, generators, and other rotating machinery. Its 12-15V DC power range makes it versatile for various systems.

4. **Low Power Consumption** Drawing only 115mA, it is energy-efficient and unlikely to strain power sources, making it suitable for portable or battery-powered setups.

5. **Durability** Built for rugged environments, the M737A is likely to withstand vibration, temperature fluctuations, and electrical noise, which are common in industrial or field applications.

6. **Ease of Installation** Pulse tachometers like this one are straightforward to integrate into existing systems, often requiring minimal wiring and calibration.

7. **Potential for Resale Value** If well-maintained, a pre-owned M737A may retain some value, especially if it remains in demand for specific applications.

8. **Access to Support** Avion (now part of Bently Nevada) has a legacy of technical support, and pre-owned units may still qualify for warranty extensions or repairs if purchased from a reputable seller.

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1. **Age and Wear** Pre-owned units may show signs of wear, such as cracked casings, degraded wiring, or internal corrosion, particularly if they ve been exposed to harsh conditions. The seller may not disclose all issues.

2. **Calibration Drift** Over time, the internal calibration of a tachometer can drift, leading to inaccurate RPM readings. This requires verification and potential recalibration upon purchase.

3. **Limited Warranty or No Warranty** Unlike new units, pre-owned tachometers often come with no warranty or a very short one. If the unit fails shortly after purchase, repair or replacement costs will be borne by the buyer.

4. **Compatibility Risks** While the M737A is versatile, there s a risk that the specific model or variant you purchase may not match your intended application s sensor type (e.g., magnetic vs. optical) or signal frequency range. Always verify compatibility with your sensor s output.

5. **Testing Required** You ll need to test the unit thoroughly before use to ensure it functions correctly. This may involve connecting it to a known RPM source (e.g., a tachometer test generator) to confirm accuracy.

6. **Potential for Counterfeit or Mismarked Units** The used market can have counterfeit or mislabeled devices. Ensure the unit is genuine by checking serial numbers, documentation, or consulting the seller s reputation.

7. **Obsolete Parts** Over time, replacement parts for older models like the M737A may become harder to source, increasing long-term maintenance costs.

8. **No Software Updates** Unlike newer digital tachometers, the M737A is likely an analog or basic digital unit without firmware updates or advanced features that newer models might offer.

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Buying a pre-owned Avion M737A pulse tachometer can be a cost-effective and practical choice if you prioritize reliability, compatibility, and low power consumption for your application. Its robust design and widespread use make it a trusted tool for many industries. However, the risks of age-related wear, calibration issues, and lack of warranty mean you must approach the purchase with caution. Thoroughly inspect the unit, test it under operational conditions, and verify its compatibility with your sensor and power supply before committing.

- You ve verified the unit s functionality through testing (e.g., using a known RPM source).

- The seller provides documentation or a history of maintenance.

- You re comfortable with potential calibration adjustments or minor repairs.

- The price is significantly lower than a new unit, and you ve accounted for any risks in your budget.

- Your application doesn t require cutting-edge features, and the M737A meets your basic needs.

- The unit shows visible damage, corrosion, or lacks proper documentation.

- You cannot test it before purchase (e.g., buying sight-unseen from an untrusted source).

- Your application demands high precision or long-term reliability without the ability to recalibrate.

- You re unsure about compatibility with your specific sensors or power supply.

- If budget allows, purchase a new or refurbished unit from a reputable supplier for full warranty coverage.

- Look for newer pulse tachometers with digital displays or connectivity options if your application requires advanced features.

- Rent or borrow a unit for testing before committing to a purchase.

Ultimately, the M737A is a solid choice for many users, but due diligence is essential to mitigate the risks associated with pre-owned equipment.

Details:

AVITON,M737A,PULSE TACHOMETER 12-15VDC 115MA REV E PRE-OWNED Whats Included. But when available in multiple quantity, the photo shown is representative of item. Combined shipping on multiple items. Special invoicing and/or packaging requests.

No stocking fees, no hassles. Please see above for details on item condition.

part #: m737a price

• $399.00

specifications pressureswitchiz:

• brand: Aviton
• mpn: M737a
• part type: Tachometer

shipping pressureswitchiz:

• service: USPS Ground Advantage, FedEx Ground / FedEx Home Delivery
• transit: 3-9 Days
• class: Standard
• carrier: USPS, FedEx
• cost: $29.45
• type: Calculated

general pressureswitchiz:

• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Air Pressure Gauges
• condition: Used

payments pressureswitchiz:

• credit card: Discover
• wallet: Google-pay
• other

offer pressureswitchiz:

• quantity: 1
• sold: 0
• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: May 27, 2026

seller pressureswitchiz:

• city: Galion, Ohio
• rating: 100.0%
• # reviews: 11381

returns pressureswitchiz:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer
• method: Money back