MT-1/WT1 | Single-phase Wh Meter Tester

Wireless High-Accuracy Portable Field tester

MT-1/WT1 | WT Series Meter Tester | Net Metering | Single-Phase Wh Meter tester | Probewell

The MT-1/WT1 provides safe and fast results, no “strings” attached…

Meter technicians can accurately test residential, commercial or industrial electricity meters on site in mere minutes.

The MT-1/WT1 has a built-in two-phase phantom load consisting of synthesized 50 A current sources and a two-phase electronic standard with a typical accuracy of ±0.02% and a guaranteed accuracy of ±0.05%. It comes with a complete calibration report certifying measurement accuracy across its entire operating range.

Big technological leaps come in small packages…
Weight: 5.7 lb. | Size: 6.9″ X 6.7″

SKU: WT1

The MT-1/WT1 provides safe and fast results, no “strings” attached…

Meter technicians can accurately test residential, commercial or industrial electricity meters on site in mere minutes.

The MT-1/WT1 has a built-in two-phase phantom load consisting of synthesized 50 A current sources and a two-phase electronic standard with a typical accuracy of ±0.02% and a guaranteed accuracy of ±0.05%. It comes with a complete calibration report certifying measurement accuracy across its entire operating range.

Big technological leaps come in small packages…
Weight: 5.7 lb. | Size: 6.9″ X 6.7″

SKU: WT1


MT-1/WT1 | Description

Easily acquire accurate measurements wirelessly

Like all our wireless products, the meter tester can be paired with a mobile device in seconds by scanning its QR code, when using Probewell Connect 2.0.

Compatible Forms Supported by the MT-1/WT1 meter tester

Easily configurable with twist & lock removable tabs, you will be able to test both solid state and electromechanical meters.

Single-phase: 1S, 2S, 3S, 4S, 12S(N) and 25S

Class: 10, 20, 100, 200, 320**

Meter Form
g  Single Phase
g  Polyphase

1S

2S

3S

4S

5S

6S

8S

9S

12S 

14S

15S

16S

Aclara® Fitzall ™

35S

36S

25S

45S

46S

Meter Tester 

Probewell | Wireless Tester | Builtin WiFi Technology

Self-Contained

CT-Rated

Self-Contained

CT-Rated

Self-Contained

MT-1/WT1

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MT-1/WT1 | Description

MT-1/WT3 | Three-phase Wireless Watthour Meter Tester | Probewell Connect 2.0 | Installation Diagram with Optical Pickup

Easily acquire accurate measurements wirelessly

Like all our wireless products, the meter tester can be paired with a mobile device in seconds by scanning its QR code, when using Probewell Connect 2.0.

Compatible Forms Supported by the MT-1/WT1 meter tester

Easily configurable with twist & lock removable tabs, you will be able to test both solid state and electromechanical meters.

Single-phase:
1S, 2S, 3S, 4S, 12S(N) and 25S

Class: 10, 20, 100, 200, 320**

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MT-1/WT1  | Technical Specifications

MT-1/WT1 | Portable Wireless Watthour Meter Tester | Single-phase | 0.02% Accuracy | NIST-Traceable

COMPATIBLE METERS
Single-Phase 1S, 2S, 3S*, 4S, 5S, 12S(N), 25S and 45S
Class 10, 20, 100, 200, 320**
COMPATIBLE DEVICES
Operating systems IOS®, Android®, Windows®
TEST SOCKET
Input Voltage 100 – 600VAC
Line Frequency 58 – 62Hz
Power Consumption 75VA (maximum)
Circuit Breakers 2 x 1A (press-to-reset mechanism)
CURRENT SYNTHESIZERS
Adjustable Current 0.25 to 50A
Phase Angle (Wh) Unity and 60° Lag
Phase Angle (VARh) 90° and 30° Lag
INTERNAL 3-PHASE WATTHOUR STANDARD
Typical Accuracy ±0.02%
Guaranteed Accuracy ±0.05%
ENVIRONMENT
Operation Temperature -4° to 140°F (-20° to 60°C)
Storage Temperature -4° to 140°F (-20° to 60°C)
Humidity 5% to 95% (non condensing)
PHYSICAL DIMENSIONS
Test Socket (Diam. x L) 6.9” x 7.7”
WEIGHT
Test Socket 6.4 lb
WARRANTY
Parts and Labor 2-years limited***
ADVANCED FEATURES
Wh/VARh
Reverse Flow Test for bidirectional meters
Line Monitor
KW Demand Test
Creep Test
INCLUDED
Carrying bag Update cable
User’s manual Probewell Connect App. 
Quick Start Guide 2 Removable Twist Tabs
Calibration report

*An adapter is required to verify 3S Sensus Meter.
**An adapter may be required depending on the meter installation.
***Only applicable to units shipped to Canada or USA. 1-year warranty for other countries.

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Probewell | Trade-In Program | Trade in your older generation Probewell tester and get an up to $1,000 discount on the purchase of any of our latest models* | *US Only

Trade-in & 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.