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394B Process Multimeter

394B Process Multimeter
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Data Sheet The 394B Process Multimeter combines the capabilities of a mA loop calibrator with a full-featured True RMS multimeter in one package. Dedicated mA loop calibrator functions provide technicians and electricians with the tools required for testing and troubleshooting current loop applications in process control systems. Source and simulate industry standard 0-20 mA and 4-20 mA control loops using the adjustable DC current output. To evaluate process transmitters, the built-in power supply outputs 24 V while measuring the signal drive current displayed in mA and % of scale. Additionally, the 394B serves as a general purpose multimeter delivering the performance required for evaluating a wide range of electronics and electrical systems. When working in low-light environments, the auto on/off backlight adjusts for best visibility while maximizing battery life. Dual line display capabilities enable two measurements or one measurement and a math function to appear on screen simultaneously. PC software is provided for convenient measurement monitoring and recording from a computer connected to the meter's optical isolated USB interface. Features and benefits Process ■ Source/Measure/Simulate 0-20 mA and 4-20 mA DC current ■ Simultaneously monitor mA and % of scale ■ Adjustable manual and automatic output current ramp and step modes ■ Built -in 24 V loop power supply for testing process transmitters eliminates the need for an external supply ■ HART® mode inserts 250 Q resistor in series with loop power output when evaluating devices using the HART communication protocol General Purpose ■ Measurement functions: DCV, ACV, AC+DC, DCI, ACI, resistance, frequency, continuity, diode test ■ True RMS AC and AC+DC measurements ■ 50,000-count, dual display ■ dB, dBm, limits, peak-hold, REL (A), MIN, MAX, average math functions ■ HFR (High Frequency Rejection) mode applies a low pass filter for AC measurements (800 Hz cut-off) ■ Frequency measurement to 100 kHz ■ Dirt and water-resistant housing with rubberized protective case ■ Isolated USB interface with operating software for remote data logging ■ CAT III 1000 V / CAT IV 600 V protection Technical data subject to change © B&K Precision C

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Process Multimeter Model 394B Operation highlights PROCESS MULTIMETER Auto on/off backlit display sensor Low pass filter to minimize high frequency noise Quick manual range adjustment «fi«9 mf I Ofl LOOP POWE 2500 HART STORE RECALL MAX MIN AVG OUTPUT &-24mA SOURCE-^ /-SIMULATE- LOOP POWER -FUSED' CANCEL RELA Adjustable manual and automatic output current —. 250 0 mA HART. \LOOP POWER HART mode (adds 250 Q resistor) Provided application software PC software is available for logging measurement data at specified intervals with date and time stamp. Log up to 100,000 data points in graph or...

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Process Multimeter Model 394B Specifications Specifications are based on the following conditions/assumptions: ■ Accuracy specifications: ± (% of reading + counts of least significant digit) at 23 °C ± 5 °C, with relative humidity less than 80% RH ■ One year calibration cycle ■ Temperature coefficient is 0.1 x (specified accuracy)/°C for T < 18 °C, T > 28°C ■ AC voltage and AC current specifications are AC coupled, true RMS ■ For non-sinusoidal waveforms: - Add 1.0% to AC accuracy specification for Crest Factor 1.4 to 2.0 - Add 2.5% to AC accuracy specification for Crest Factor 2.0 to 2.5 -...

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Process Multimeter Model 394B Specifications Process Multimeter Functions / Current Output Included Accessories These multimeters include test leads, magnetic hanger strap, and USB communication cable.

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About B&K Precision For more than 70 years, B&K Precision has provided reliable and value-priced test and measurement instruments worldwide. Our headquarters in Yorba Linda, California houses our administrative and executive functions as well as sales and marketing, design, service, and repair. Our European customers are most familiar with B&K through our French subsidiary, Sefram. Engineers in Asia know us through our B+K Precision Taiwan operation. The independent service centers in Singapore and Brasil service customers in Singapore, Malaysia, Vietnam, Indonesia and South America,...

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