What is the difference in phase support between the WT310 and WT230?

The Yokogawa WT310 is a single-phase instrument featuring 1 input channel (1P2W). The Yokogawa WT230 is a multi-phase instrument supporting 2-element or 3-element configurations, allowing for 1P2W, 1P3W, 3P3W, and 3P4W wiring systems.

Which model offers the highest measurement accuracy in the WT series?

The Yokogawa WT3000 is the precision analyzer in this group, offering a basic active power reading accuracy of 0.02% at 50/60 Hz, compared to the 0.1% basic accuracy found on the WT210, WT230, and WT310.

What current limits apply to the Yokogawa WT310E?

The Yokogawa WT310E supports a maximum continuous direct input current of 22 Arms (or 100 Apeak), and a 1-second maximum direct input current of 30 Arms (or 150 Apeak).

Yokogawa WT Series Digital Power Meters and Analyzers

6 models with full specifications from Yokogawa.

The Yokogawa WT Series consists of industry-standard digital power meters and analyzers designed for high-accuracy electrical power measurement and analysis. These instruments are optimized for engineering professionals and technical buyers working in research and development, production line testing, QA, and efficiency verification. The series ranges from compact single-phase benchtop units to multi-channel precision power analyzers. While compact models like the Yokogawa WT210, Yokogawa WT310, and Yokogawa WT310E are ideal for standard power consumption and standby power testing, the multi-phase Yokogawa WT230 provides three-phase capability in a small form factor. For more demanding, multi-channel applications, the Yokogawa WT1600 and Yokogawa WT3000 offer high-performance analysis, multi-element configurations, and extensive bandwidth capabilities. This page covers the specifications, differences, and practical applications of these six distinct WT models to assist in selecting the correct instrument for specific testing requirements.

Phase Configurations: Single-phase (1P2W) up to 6-phase systems
Highest Power Accuracy: 0.02% basic active power (WT3000)
Compact Models Weight: 3.0 kg (WT210, WT310, WT310E)
Display Options: 7-segment LED or 8.4-inch color TFT LCD
Maximum Bandwidth: DC, 0.1 Hz to 1 MHz (WT3000)

Models in this series

Model	Type	A/D Converter Resolution	Dimensions (W×H×D)	Display
WT310	Power	16-bit	213 × 88 × 379 mm	7-segment LED display
WT3000	Power	16-bit	426 × 177 × 459 mm	8.4-inch color TFT LCD, 640 × 480 (VGA)
WT210	Power	16-bit	213 mm × 88 mm × 379 mm	4-screen 5-digit LED display
WT1600	Power	16 bits	426 × 177 × 430 mm	8.4-inch color TFT LCD, 640 × 480 pixels
WT230	Power	16-bit	213 mm × 132 mm × 379 mm (W×H×D, excluding projections)	4-window LED display
WT310E	Power	16-bit	213 × 88 × 379	4-screen 7-segment LED

Compact Single-Phase Instruments

The Yokogawa WT210, Yokogawa WT310, and Yokogawa WT310E share a compact form factor, with dimensions of 213 mm width and 88 mm height, and a weight of 3.0 kg. The Yokogawa WT210 features a 4-screen, 5-digit LED display and a wide direct current measurement range starting at 0.5 mA up to 20 A direct input, making it suitable for low-current applications. The Yokogawa WT310 offers a basic active power accuracy of 0.1% at 50/60 Hz, 16-bit A/D conversion, and a frequency bandwidth from DC and 0.5 Hz to 100 kHz. The Yokogawa WT310E serves as a single-phase, two-wire (1P2W) instrument with a 100 kHz bandwidth, 4-screen 7-segment LED, and standard USB interface, with optional Ethernet capability. These models are configured with a single input channel.

Multi-Phase Benchtop Solutions

For applications requiring multi-phase measurement without the footprint of a large analyzer, the Yokogawa WT230 offers a three-phase digital sampling power meter. With dimensions of 213 mm width, 132 mm height, and a weight of 5.0 kg in its 3-element configuration, it supports 1P2W, 1P3W, 3P3W, and 3P4W wiring systems depending on the configuration. The Yokogawa WT230 provides a basic accuracy of 0.1%, supports direct continuous current inputs up to 26 Arms, and measures a wide range of parameters including active power, apparent power, reactive power, power factor, and current/active energy integration.

High-Channel Precision Power Analyzers

The high-performance tier includes the Yokogawa WT1600 and the Yokogawa WT3000. These analyzers feature an 8.4-inch color TFT LCD display (640 x 480 pixels) and fit a larger standard rack width of 426 mm. The Yokogawa WT1600 can accommodate up to 6 input channels (elements) and supports both 5 A and 30 A element configurations, with direct voltage ranges up to 1000 V. The Yokogawa WT3000 is a precision power analyzer delivering ultra-high accuracy, with a basic active power reading accuracy of 0.02% and voltage/current basic accuracy of 0.01% at 50/60 Hz. It supports up to 4 elements, enabling a mix of 2 A and 30 A elements, and provides a wide measurement bandwidth from DC and 0.1 Hz to 1 MHz.

Frequently asked questions

What is the difference in phase support between the WT310 and WT230?: The Yokogawa WT310 is a single-phase instrument featuring 1 input channel (1P2W). The Yokogawa WT230 is a multi-phase instrument supporting 2-element or 3-element configurations, allowing for 1P2W, 1P3W, 3P3W, and 3P4W wiring systems.
Which model offers the highest measurement accuracy in the WT series?: The Yokogawa WT3000 is the precision analyzer in this group, offering a basic active power reading accuracy of 0.02% at 50/60 Hz, compared to the 0.1% basic accuracy found on the WT210, WT230, and WT310.
What current limits apply to the Yokogawa WT310E?: The Yokogawa WT310E supports a maximum continuous direct input current of 22 Arms (or 100 Apeak), and a 1-second maximum direct input current of 30 Arms (or 150 Apeak).