WT Series
Portable Wireless Meter Tester
The WT Series portable wireless electric meter testing equipment enables advanced meter performance analysis. They are powered by a polyphase synthesized phantom load of up to 50 A current and the built-in Wh/VARh standard, which offers a typical NIST-traceable accuracy of ±0.02%.
The highly versatile testing device can test a wide variaty of meters :
- Residential, commercial and industrial
- Single & three-phase
- Solid-state or electromechanical

WT Series | Wireless Meter Tester
The WT Series portable wireless electric meter testing equipment enables advanced meter performance analysis. They are powered by a polyphase synthesized phantom load of up to 50 A current and the built-in Wh/VARh standard, which offers a typical NIST-traceable accuracy of ±0.02%.
The highly versatile meter testing device can test:
- Residential, commercial and industrial meters
- Single & three-phase meters
- Solid-state or electromechanical meters
ST3-XT3
Portable Transformer-rated Site Tester
The ST-3/XT3 tester for instrument-rated installations unique of its kind on the market. It provides a complete set of performance analysis and reporting solutions.
Available test:
- Power quality including:
- real-time waveform
- Phasors
- Total harmonic distortion
- Primary and secondary analysis
- CT burden
- Admittance test

ST3-XT3 | Portable Transformer-rated Site Tester
The ST-3/XT3 tester for Transformer-rated installations is the most versatile of its type on the market. It provides a complete set of performance analysis and reporting solutions, mainly:
-Power quality including:
- real-time waveform
- Phasors
- Total harmonic distortion
-Primary and secondary analysis
-CT burden
-Admittance test

Probewell Connect 2.0
The Probewell Connect 2.0 application is the ultimate sidekick to control any of our wireless testers. It is a performance analysis and reporting solution that complements WT series electric meter testers and XT series, transformer-rated site tester.
Probewell Connect 2.0 helps reduce the risk of revenue loss by identifying potential technical and non-technical issues through routine field inspections.
-Share your finding via email or SMS from your mobile device
Download Probewell Connect 2.0

Undeniable traceability
Autoformated test reports includes:
-
- Meter/Site information
- Utility work order number
- Timestamp and geolocation
- Device model and serial number
- Company information
- Technician IDs

Probewell Connect 2.0
The Probewell Connect 2.0 application is the ultimate sidekick to control any of our wireless testing devices. It is a performance analysis and reporting solution that complements both our electric meter and transformer-rated site testers.
Probewell Connect 2.0 helps reduce the risk of revenue loss by identifying potential technical and non-technical issues through routine field inspections.
-Share your finding via email or SMS from your device
Undeniable results
The traceable CSV and PDF inspection reports include:
- Utility work order number
- Timestamp and geolocation
- Meter info
- Socket model
- Company and field technician ID
- Accurate performance analysis test results

Download Probewell Connect 2.0
Don’t take our word for it, read what our customers are saying…

Positives: Professionalism, Quality, Responsiveness
My company recently purchased two MT-1/WT3 watthour meter testers.
I had a few questions on their software and they responded within minutes!
Their customer service is top-notch and we are very pleased with these test units.

I purchased the Probewell MT-1/WT3 portable meter tester in January of 2021 and cannot say how pleased I am with this product.
It works just as marketed and the support is spot on.
I was asked for feedback after a few months and was genuinely listened to about an improvement in the app I would like to see and they responded that in the updated version of the app, it would have that improvement in it.
Awesome product and support!

I just did my first test and emailed the results and this tester is SO COOL ????!!!
In this world of companies that have let customer service take a back seat it is very refreshing to deal with a company like Probewell where it is obvious that customer service and satisfaction are a priority.
Positives: Professionalism, Quality, Responsiveness, Value
I work for a utility company that has been using Probewell’s products for years.
Their meter test kits are built very well, are user-friendly and come with clear instructions.
Also, their staff is courteous and they always provide great timely assistance.

Positives: Professionalism, Quality, Responsiveness
Great company to work with! Excellent customer service! I would recommend them to anybody in need of meter testing equipment.
I purchased the Probewell MT-1/WT3 portable meter tester in January of 2021 and cannot say how pleased I am with this product. It works just as marketed and the support is spot on.
I was asked for feedback after a few months and was genuinely listened to about an improvement in the app I would like to see and they responded that in the updated version of the app, it would have that improvement in it.
Awesome product and support!
Positives: Professionalism, Quality, Responsiveness
Great company to work with! Excellent customer service! I would recommend them to anybody in need of meter testing equipment.
Among our Users














Don’t take our word for it, read what our customers are saying…

I just did my first test and emailed the results and this tester is SO COOL ????!!!
In this world of companies that have let customer service take a back seat it is very refreshing to deal with a company like Probewell where it is obvious that customer service and satisfaction are a priority.

Positives: Professionalism, Quality, Responsiveness
Great company to work with! Excellent customer service! I would recommend them to anybody in need of meter testing equipment.
I just did my first test and emailed the results and this tester is SO COOL???!!!
In this world of companies that have let customer service take a back seat, it is very refreshing to deal with a company like Probewell where it is obvious that customer service and satisfaction are a priority.
Positives: Professionalism, Quality, Responsiveness, Value
I work for a utility company that has been using Probewell’s products for years.
Their meter test kits are built very well, are user-friendly and come with clear instructions.
Also, their staff is courteous and they always provide great timely assistance.
Positives: Professionalism, Quality, Responsiveness, Value
I work for a utility company that has been using Probewell’s products for years. Their meter test kits are built very well, are user-friendly and come with clear instructions. Also, their staff is courteous and they always provide great timely assistance.

I purchased the Probewell MT-1/WT3 portable meter tester in January of 2021 and cannot say how pleased I am with this product.
It works just as marketed and the support is spot on.
I was asked for feedback after a few months and was genuinely listened to about an improvement in the app I would like to see and they responded that in the updated version of the app, it would have that improvement in it.
Awesome product and support!
The Probewell Meter Tester offers everything you need within one product, including the new WiFi unit. Being able to test most meter forms and install the unit at the meter base onsite, whether single- or three-phase, it allows members and the Co-op to get accuracy within minutes instead of days, saving time and money by not having to make a return trip to put the meter back in once tested.
We have used a Probewell meter tester for over 10 years now and we have not had any issues with the unit. They are reasonably priced and everyone within company is easy to work with.
Among our Users














Probewell Support Portal

Help yourself to our product documentation to rapidly find answers to your questions and troubleshoot your product.
Probewell Support Portal

Help yourself to our product documentation to rapidly find answers to your questions and troubleshoot your product.

Trade-in and Trade-Up
If you own an older-generation Probewell product, you are automatically eligible for our trade-in program.
Trade in your old meter tester and get up to 1,000 USD* off the purchase of any of our newer models.
*US customers only. If you are a customer from outside the United States, please contact Probewell.
Trade-in and Trade-Up
If you own an older-generation Probewell product, you are automatically eligible for our trade-in program.
Trade in your old meter tester and get up to 1,000 USD* off the purchase of any of our newer models.
*US customers only. If you are a customer from outside the United States, please contact Probewell.