Calibration
Request calibration for your Testo instrument and access the associated certificate through your customer account when available.
Request calibrationQRM Electronics · Customer services
Service made
straightforward.
Expert care for your Testo instruments. Request service, follow your order and find your documents—all in one connected experience.
Testo instrument serviceRepair & calibrationCustomer order support
Our services
Care for the instruments
you depend on.
From the first request to the final service record, QRM helps you find the right next step.
Repair & inspection
Describe the fault, include the device details and let QRM assess the service needed. Review the quote before work proceeds.
Start a repair requestWarranty review
Send your Testo instrument details for warranty assessment. Include the symptoms and relevant purchase information with your request.
Request a reviewBack in production support
The redesigned testo 320 and 330 are ready for the field.
QRM is bringing the current Testo combustion platforms back into production support with model-specific service, sensor care and documented calibration.
Standard flue gas analyzer
testo 320
A practical platform for everyday commissioning, service and maintenance, with integrated O₂ and CO sensors, a clear touchscreen workflow and connected reporting options.
- Guided, app-like measurement menus
- Testo Smart App and reporting support
- Model-specific sensor and calibration checks
Advanced flue gas analyzer
testo 330
A connected platform for commissioning, service and diagnostics, with guided workflows, automatic zeroing and variant-specific O₂, CO/H₂ and NO configurations.
- 5.5-inch touchscreen and fast workflows
- Smart App, Bluetooth and centralized data options
- High-concentration protection depends on the exact variant
Why annual service matters
Electrochemical cells are working sensors, not permanent parts.
They react with the gas being measured and gradually lose response. Annual calibration and service helps catch drift, sample-path problems and depleted cells before a suspect reading is used for a safety decision.
From request to return
A clear path through service.
Complete the form
Enter your company, return location and the service requested for each device.
Send it to QRM
Keep your submission reference with the instrument so the details stay together at receiving.
Review your quote
After assessment, review the proposed work and respond to the quote.
Follow the return
Use your customer portal to check status, tracking and available service documents.
Qboy’s service walkthrough
How to service your device.
Qboy helps you capture the information that lets receiving, service and calibration stay aligned from the first request.
- Identify it. Record the exact model, product number and serial number.
- Describe it. Tell us the service needed, error message, symptoms and accessories included.
- Choose the return location. Confirm the customer and ship-to address before sending.
- Review and submit. Keep the reference with the device and use the portal after QRM creates the quote.
Help & support
Answers before you send.
Use the full support area for troubleshooting, FAQs, manuals and model-specific service guidance.
Which instruments does QRM service?
QRM provides service, repair and calibration for Testo instruments. Use the form to tell us the exact model and the service required so we can assess the request.
Why do electrochemical cells need annual calibration?
They react with the target gas and gradually deplete. Annual service checks the response and the sampling path, documents the result and identifies when a cell needs replacement.
Can I include more than one device?
Yes. Add each device in the Devices step, with its model, serial number, symptoms and included accessories.
Where do I check an existing order?
Sign in to the customer portal. You can search using your quote or sales order number, purchase order or reference.