HIOKI Digital HiTesters: 3237, 3238, 3239
The HIOKI DIGITAL HITESTER series, comprising the 3237 (Economically priced), 3238 (Advanced model), and 3239 (4-terminal Ω function), offers high-speed performance for production lines and laboratory measurements. These instruments feature 3.3 ms high-speed sampling, comparator functions, external input/output for sequence control, and an RS-232C interface.
Key Features
- High-Speed Sampling: Up to 300 samples/sec (3.3 ms/sample).
- Comparator Function: Enables high-speed pass/fail evaluation.
- External Input/Output: Facilitates sequence control.
- Save/Load Function: Speeds up workflow by saving up to 30 setting conditions.
- Low Power Resistance Measurement: Minimizes sample degradation with low open terminal voltage (<0.45 V DC) and low measurement current (<100 μA DC).
- True RMS Value Measurement: Accurately measures distorted waveforms for AC voltage and current.
- Remote Operation: Supports automation via GP-IB or RS-232C interfaces.
Model Overview
| Model | Description | DC V Basic Accuracy | Key Functions |
|---|---|---|---|
| 3237 | Basic and economical | ±0.025% rdg. ±2 dgt. | DC V, AC V, Resistance (2-terminal), Continuity, Diode |
| 3238 | High-accuracy & multi-functional | ±0.01% rdg. ±2 dgt. | Includes frequency measurement for AC and DC Current |
| 3239 | 4-terminal Ω measurement & Advanced | ±0.01% rdg. ±2 dgt. | All functions of the 3238, plus 4-terminal Ω measurement |
Measurement Capabilities
- DC Voltage: Up to 1000 V
- AC Voltage: Up to 700 V (True RMS)
- Resistance: 2-terminal and 4-terminal measurements, including Low Power (LPΩ) function.
- Current: AC/DC current measurement via terminals (up to 2000 mA) and optional clamp sensors (up to 1000 A AC).
- Frequency: Up to 300 kHz.
- Continuity Check: With buzzer indication.
- Diode Check: For semiconductor testing.
Interfaces and Connectivity
The instruments support remote control and data transfer via:
- GP-IB (Optional): For automated testing and measurement value output.
- RS-232C (Standard): For remote control and data output, compatible with printers like the PRINTER 9442.
A foot switch can also be connected for printer control or triggering measurements.
Performance and Data Handling
Efficient Evaluation Testing: PC measurement capabilities allow data processing with software like Microsoft Excel, leveraging the high accuracy and broad coverage of the 3238 and 3239. Example graphs illustrate time history of current integration and discharge characteristics.
Clamp Sensor Support: Optional clamp sensors enable easy measurement of live AC currents, with models like the 9010-50, 9018-50, and 9132 available.
Accuracy: Detailed accuracy specifications are provided for various measurement functions and ranges, with options for FAST, MEDIUM, and SLOW sampling rates.
General Specifications Summary
- Sampling Rates: FAST (approx. 300 samples/sec), MEDIUM (approx. 8-9 samples/sec), SLOW (approx. 1 sample/sec).
- Display: LED, max. 199999 (or 999999 for frequency).
- Power Supply: Selectable AC input (100 V/120 V/220 V/240 V, 50/60 Hz).
- Dimensions: Approx. 215 W x 80 H x 265 D mm, 2.6 kg.
- Operating Temperature: 0 to 40 °C.
For detailed specifications, options, and accessories, please refer to the official HIOKI website: www.hioki.com
