The 394B process multimeter from B&K Precision is a versatile measuring instrument that combines the functions of a mA loop calibrator with the capabilities of a true RMS digital multimeter. It has been specially developed for the requirements of process control systems and enables the measurement, simulation and output of 0-20 mA and 4-20 mA DC currents.
In addition, the device can be used as a high-quality general multimeter and offers functions for measuring voltage (DC/AC/AC+DC), current, resistance, frequency, continuity and diode test. The robust design with a water and dirt-resistant housing and rubberized protection makes it ideal for use in demanding environments, for example in industrial maintenance, process automation or electronics development.
Outstanding features of the 394B include:
- True RMS AC and AC+DC measurements for precise results
- 50.000-count display with dual display for parallel measurements
- HART mode with integrated 250 Ω resistor for evaluating HART protocols
- Integrated 24 V loop power supply, no external supply required
- Ramp and step modes for automatic output current regulation
- Optically isolated USB interface for remote monitoring and data logging
- High Frequency Rejection (HFR) for precise AC measurements
- CAT III 1000 V / CAT IV 600 V protection for safe measurements in high voltage environments
Product features:
- Display: 50.000 counts
- Basic accuracy (DCV): ±0.05 %
- Measurement functions: DCV, ACV, AC+DC, DCI, ACI, resistance, frequency, continuity, diode test
- True RMS measurements: Yes
- HART mode: Yes, with 250 Ω resistor
- Loop power supply: 24 V
- Current output: 0-20 mA or 4-20 mA (with internal battery or external loop supply)
- Current output modes: Manual, automatic ramp (fast/slow), 25% steps
- Voltage ranges: 50 mV to 1000 V
- Current measurement ranges: 50 mA to 1 A
- Resistance measurement ranges: 500 Ω to 50 MΩ
- Frequency measurement: Up to 100 kHz
- Optically isolated USB interface: Yes
- Protection category: CAT III 1000 V / CAT IV 600 V
- Enclosure: Water and dirt resistant with rubberized protection
- Power supply: 4x 1.5 V AA batteries
- Battery life: 100 hours
- Dimensions: 95 mm x 207 mm x 52 mm
- Weight: 630 g