The Yokogawa WT310 is a compact, high-performance single-phase digital power meter designed for accurate power consumption measurement in R&D, production line testing, and QA applications. Featuring high basic accuracy of 0.1%, a wide bandwidth from DC and 0.5 Hz to 100 kHz, and versatile integration capabilities, it delivers reliable measurement of power, voltage, current, power factor, and harmonics.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | USB standard; GPIB, RS-232C, Ethernet, Analog D/A output (option-dependent) |
| Display | 7-segment LED display |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 100 V AC to 240 V AC, 50/60 Hz, max 50 VA |
| Operating Temperature | 5 °C to 40 °C |
| Dimensions (W×H×D) | 213 × 88 × 379 mm |
| Weight | 3.0 kg |
Measurement Inputs and Ranges
| Parameter | Value |
|---|---|
| Number of Measurement Channels | 1 input element (1-phase 2-wire) |
| Voltage Input Ranges | 15 V, 30 V, 60 V, 150 V, 300 V, 600 V (Crest Factor 3) |
| Crest Factor Rating | 3 or 6 |
| Voltage Input Impedance | Approx. 2 MΩ in parallel with approx. 13 pF |
| Frequency Measurement Range | 0.5 Hz to 100 kHz |
Accuracy and Performance
| Parameter | Value |
|---|---|
| Basic Active Power Accuracy | ±(0.1% of reading + 0.1% of range) at 50/60 Hz |
| Basic Voltage Accuracy | ±(0.1% of reading + 0.1% of range) at 50/60 Hz |
| Basic Current Accuracy | ±(0.1% of reading + 0.1% of range) at 50/60 Hz |
| Frequency Bandwidth | DC, 0.5 Hz to 100 kHz |
| A/D Converter Resolution | 16-bit |
| Data Update Interval | 100 ms, 250 ms, 500 ms, 1 s, 2 s, 5 s |
| Line Filter Cutoff Frequency | 500 Hz |
Measurement Parameters and Functions
| Parameter | Value |
|---|---|
| Active Power Measurement (P) | Supported |
| Apparent Power Measurement (S) | Supported |
| Reactive Power Measurement (Q) | Supported |
| Power Factor Measurement (PF) | Supported |
| Phase Angle Measurement | Supported |
| Peak Hold Function | Voltage and Current (+/- peak hold) |
| Integration Function | Ah (Ampere-hour) and Wh (Watt-hour) integration |
| Harmonic Measurement Option | Up to 50th order (with /G5 option installed) |
Display and Control
| Parameter | Value |
|---|---|
| Display Type | 7-segment LED display |
| Simultaneous Display Parameters | 4 display areas |
Interfaces and Connectivity
| Parameter | Value |
|---|---|
| USB Interface | USB Type-B (standard) |
| RS-232C Interface | Optional (Suffix -C2) |
| GPIB Interface | Optional (Suffix -C1) |
| Ethernet Interface | Optional (Suffix -C7) |
| Analog D/A Output | Optional, 4-channel output (Option /DA4) |
Power Supply
| Parameter | Value |
|---|---|
| Supply Voltage Range | 100 V AC to 240 V AC |
| Supply Frequency | 50 Hz / 60 Hz |
| Power Consumption | Max 50 VA |
Environmental and Safety
| Parameter | Value |
|---|---|
| Operating Temperature Range | 5 °C to 40 °C |
| Operating Humidity Range | 20% to 80% RH (non-condensing) |
| Storage Temperature Range | -25 °C to 60 °C |
| Maximum Operating Altitude | 2000 m |
| Safety Standards | EN61010-1, EN61010-2-030 |
| EMC Standards | EN61326-1 Class A, EN55011 Class A Group 1 |
| Measurement Category | CAT II 600 V |
Options and Accessories
| Parameter | Value |
|---|---|
| Harmonic Measurement Option Code | /G5 |
| Ethernet Option Code | -C7 |
| GPIB Option Code | -C1 |
| RS-232 Option Code | -C2 |
| D/A Output Option Code | /DA4 |
Input & Measurement
| Parameter | Value |
|---|---|
| Direct Current Input Ranges | 5 mA, 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 0.5 A, 1 A, 2 A, 5 A, 10 A, 20 A |
| Current Input Impedance | Approx. 6 mΩ + 0.07 µH (0.5 A to 20 A range), approx. 500 mΩ (5 mA to 200 mA range) |
| External Sensor Input Impedance | Approx. 100 kΩ |
Input Limits
| Parameter | Value |
|---|---|
| Maximum Input Voltage | 1000 Vrms, 1500 Vpeak |
| Maximum Input Current | 30 Arms, 100 Apeak |
General Specifications
| Parameter | Value |
|---|---|
| Warm-up Time | Approx. 30 minutes |
Harmonic Measurement
| Parameter | Value |
|---|---|
| Maximum Harmonic Order | 50th order (with /G5 option) |
Functions & Features
| Parameter | Value |
|---|---|
| Auto-Range Integration | Supported (automatically switches range during active power/current integration) |
Integration
| Parameter | Value |
|---|---|
| Integration Time Range | 0000:00:00 to 10000:00:00 (hours:minutes:seconds) |
Software & Communication
| Parameter | Value |
|---|---|
| Bundled PC Application | WTViewerFreePlus |
Maintenance
| Parameter | Value |
|---|---|
| Recommended Calibration Interval | 1 year |
Technology
Digital Power Analyzer
Applications
Power consumption measurement, efficiency evaluation, standby power testing, and harmonic analysis