Sonel MMR-640 Microohmmeter Repair

$245.00 evaluation fee

🛡️ 90-Day Warranty ✓ Fee Credited to Repair ⚡ No Forms Needed

Component-level Sonel MMR-640 repair backed by a 90-day warranty. Our repair process covers diagnostics through final contact resistance verification.

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📋 How It Works

Submit Request – Pay evaluation fee & provide equipment details
Ship to Us – Send your equipment to our Oregon facility
We Evaluate – Detailed diagnosis & repair estimate
Fee Credited – Your evaluation fee applies to repair cost
We Repair – Professional repair with 90-day warranty

🔧 Fast Turnaround: Most repairs are completed within 1–3 business days.
📏 Precision Calibration: NIST-traceable calibrations included for most repairs.
🛡️ Warranty: 90-day warranty on all repairs.
📝 Transparency: Detailed evaluation and repair estimate before work begins.

✓ Evaluation Fee Credited Toward Repair

This evaluation fee is applied as credit toward your final repair cost. After we evaluate your equipment, you'll receive a detailed estimate before any repair work begins.

Description

Sonel MMR-640 Microohmmeter Repair

The Sonel MMR-640 Microohmmeter is a low resistance ohmmeter – it injects a known current and measures the resulting millivolts through separate sense leads, because at micro-ohm level the test leads themselves would otherwise dominate the measurement. That four-wire arrangement is the whole instrument.

June Company’s certified technicians repair the Sonel MMR-640 Microohmmeter for substation technicians, motor shops, utility maintenance crews, and quality departments. Every instrument is repaired at component level and verified against reference standards before it ships back, with the measured results documented.

Common Sonel MMR-640 Microohmmeter problems we fix

Readings inconsistent between repeat measurements – usually the current clamps or sense leads rather than the instrument – contact resistance is a large share of what is being measured at these levels.
Test current not reaching the set value.
Sense lead or Kelvin clamp faults.
Readings drifted out of tolerance – corrected and verified against reference standards.
Temperature compensation errors.
Battery, charging or power faults.
Display, keypad or front-panel faults.
GPIB, LAN, USB or remote-control faults – which breaks automated test sequences while the instrument still works from the front panel.

FAQs

Do you service instruments past manufacturer support? Yes. Much of what we repair is out of support, which is exactly where component-level work earns its keep.

What if it is not economical to repair? We tell you in the quote. The evaluation is free and there is no obligation to proceed.

Every repair carries a 90-day parts-and-labor warranty, with a firm quote before any work begins. Email us or submit a service request.

Brand

Sonel Repair

We repair and calibrate Sonel thermal cameras and low resistance ohmmeters. Sonel repairs by instrument type: Thermal Camera Repair and Low Resistance Ohmmeter Repair. Sonel units on our list include the Sonel KCH-320 Thermal Camera, Sonel KSF-320 Thermal Camera and Sonel KT-200-19 Thermal Imager. A repaired thermal camera from Sonel ships calibrated to NIST-traceable standards, under a 90-day warranty. Each Sonel job starts with a firm quote you approve.

Shipping & Returns

Packing your equipment. You are responsible for packaging equipment adequately for transit. We strongly recommend the original manufacturer’s case, or double-boxing with at least two inches of shock-absorbing material on all six sides. We return your equipment in the packaging it arrived in, so please send it in packaging that will survive the return trip as well. If your packaging is damaged or inadequate for the return, we will substitute suitable packaging and may charge the cost of materials.

Insurance. Equipment is not insured by June Company while in transit. We strongly recommend insuring your shipment for its full replacement value.

Risk of loss. Risk of loss remains with you until your equipment is received at our facility, and transfers back to you when your repaired unit is delivered to the carrier (F.O.B. shipping point). June Company is not responsible for equipment lost, delayed, misdelivered, or damaged in transit, in either direction.

Return label. A prepaid and preprinted return shipping label should be included with your shipment. If one is not included, we will provide one.

Transit damage. Damage occurring in transit is the responsibility of the carrier. It is not a warranty defect and is not covered by the 90-day repair warranty. Any claim must be filed by you with the carrier; we will supply photographs and documentation to support it at no charge.

Full details: Terms & Conditions, Section 6 · Return Policy