The Model 1790 Tachometer Tester is used for testing and calibration of electrical and mechanical tachometer generators and indicators. A high-quality DC motor is coupled directly to a 1/4-inch square hole drive (AN Pad). This tachometer tester output can be converted to a wide variety of adapters and different tachometer interfaces. The motor drive control circuit uses SCR components and an open loop system for an economical solution to speed adjustment. The control panel consists of a five-digit LED display, momentary switches for start and stop, a direction switch, a display select switch, and a ten-turn potentiometer for speed adjustment.
Version (MFR# 230020-7) includes a RPM readout and operates on 230 VAC.
- 250 - 10,000 RPM Tachometer Testing Range
- 250 - 5,000 RPM Actual Drive Speed
- 1 RPM Accuracy of Digital Display
- Bright Red 5-Digit Display
- Maximum Torque: 60 oz-in
- Low Cost
- direct-drive
- Bi-directional
- Ten-turn Speed Adjustment
- Optional Calibration Kit Available
Product Codes | |
|---|---|
| Mfr Part No: | 230020-7 |
| ECCN: | 7B994 |
| SCHEDULE B CODE: | 9031.80.8080 |
Weight: 36 lbDimensions: 12.7 x 12 x 8.1 inDrive type: Permanent magnet DC motorMaximum torque: 60 oz-in.Drive outlet: 1/4 inch square hole (AN Pad)Shaft speed range: Infinitely variable within 250 - 5,000 RPM bi-directionalIndicator speed range: 250 - 5,000 RPM (1x setting) 500 - 10,000 RPM (2x setting)Operating temperature: 40º to 90º F (4º to 32º C)
- Stock: Out of Stock
- Manufacturer Part #: 230020-7
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Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
- Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
We source products from manufacturers, authorized distributors, and established aviation suppliers as applicable. We are an independent reseller; we do not claim direct dealer or authorized-representative status for any brand. Documentation, source, and warranty eligibility vary by product and are confirmed on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
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