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Bench LCR Meters Model 895 | BK Precision
The 894 and 895 are high accuracy LCR meters capable of measuring inductance, capacitance, and resistance of components and materials at DC or from 20 Hz to 500 kHz or 1 MHz respectively. These LCR meters provide flexible AC and DC test signal configuration. AC test signal voltage is variable from 5 mVrms to 2 Vrms, the AC current is adjustable up to 66.7 mArms, depending on the AC impedance selected, and a DC bias signal can be added. The vivid 4.3-inch TFT LCD offers a clear view of all measured and setting values along with BIN sorting comparator results and a handy Zoom feature that enlarges the measured values to full screen. With a basic accuracy of 0.05%, auto level control (ALC), open / short / load correction and cable length compensation, these meter are perfect tools for R&D, manufacturing and quality control applications.
Features & Benefits
- AC test signal voltage adjustable up to 2 Vrms
- 3 AC current ranges, selectable via 30 ohm, 50 ohm or 100 ohm internal AC impedance. The 30 ohm setting provides up to 66.7 mArms of drive current, sufficient for larger inductors and transformers.
- Built-in DC bias source adjustable from -5V to +5V / -50 mA to +50 mA
- Fast measurement speed up to 13 ms/reading to increase manufacturing throughput
- 201-point programmable list sweep function providing ability to sweep frequency, AC and DC bias voltage/current levels
- Auto-level control to maintain the measurement signal applied to the DUT at a constant level
- Test signal voltage and current monitoring
- BIN comparator function to sort components in up to 10 bin locations
- 1 meter cable compensation
- 4-terminal fixture and Kelvin clip test leads included
- Transformer test function with optional transformer test fixture TL89T1
- Versatile trigger functionality (internal, external, bus and manual)
- Standard USB, RS232, LAN, and GPIB (895 only) interface for remote control using SCPI commands
Test Signal Frequency |
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| Model | Range | Minimum resolution | Accuracy |
| BK 894 | 20 Hz - 500 kHz | 0.01 Hz | 0,01 % |
| BK 895 | 20 Hz - 1 MHz | ||
Test Signal Levels |
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AC source (ALC* OFF) |
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| Voltage Accuracy | 10% x set voltage ± 2mV | |
| Voltage Level | Resolution | |
| 5 mVrms - 100 mVrms | 100 µVrms | |
| 100 mVrms - 1 Vrms | 1 mVrms | |
| 1 Vrms - 2 Vrms | 10 mVrms | |
| Current Accuracy | 10 % x set current ± 10 µA | |
| Current Range | Impedance | |
| 166.7 µArms - 66.7 mArms | 30 Ω | |
| 100.0 µArms - 40.0 mArms | 50 Ω | |
| 50.0 µArms - 20.0 mArms | 100 Ω | |
AC source (ALC* ON)1 |
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| Voltage | Range | 10 mVrms - 1 Vrms |
| Accuracy | 6% x set voltage ± 2 mV | |
| Current | Range | 100 µArms - 10 mArms |
| Accuracy | 6 % x set current ± 10 µA | |
DC bias source |
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| Voltage | Range | -5 V to +5 V |
| Accuracy | 1 % x set voltage ± 5 mV | |
| Resolution | 0.01 mV | |
| Current | Range | -50 mA to +50 mA |
| Accuracy | 1 % x set current ± 50 µA | |
| Resolution | 0.1 µA | |
* Auto Level Control
1: Resolution and impedance see AC source (ALC OFF) specification
Measurements |
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| Measurement parameters | L, C, R, G, X, Z, Y, B, θ, Q, D, DCR | |
| Transformer measurement parameters 2 | L2A, L2B, N, 1/N, M | |
| Basic accuracy | 0,05 % | |
| AC source Output impedance (± 2%) | 30 Ω, 50 Ω, 100 Ω | |
| Typical measurement time (≥10 kHz) (excluding display refresh time) |
Fast | 13 ms / measurement |
| Medium | 67 ms / measurement | |
| Slow | 187 ms / measurement | |
| Equivalent circuit | Series, Parallel | |
| Range mode | Auto, Hold | |
| Average | 1-255 measurements | |
| Correction function | Open, Short and Load correction | |
2: Requires optional fixture TL89T1
Measurements |
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| Cable length compensation | 0, & 1 meter | |
| Math operations | Direct reading, ∆ABS, ∆% | |
| Trigger mode | Internal, Manual, External, Bus | |
| Delay time setup | Time from trigger to start: 0 to 60 seconds | |
| Resolution: 1 ms | ||
| Comparator (Bin sorting) |
10-bin sorting, primary bins BIN1-BIN9 and OUT, secondary bin AUX |
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| Bin counter: 0 to 999,999 | ||
| PASS/FAIL indication via front panel LED or handler interface signal | ||
| List sweep | 201 sweep points | Sweep test frequency, test signal AC voltage, test signal AC current, test signal DC bias voltage and test signal DC bias current |
| Measurement parameters | Primary & secondary | |
| Sweep modes | Linear or logarithmic | |
| Trigger mode | Sequential and Step | |
| Comparator | One pair of lower and upper limits for primary or secondary parameter (user selectable) | |
| Internal non-volatile memory | Save / recall 40 setups | |
General |
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| External USB memory | Save / recall setups, screenshots, measurements and sweep data logs | |
| Remote interface | USB (USBTMC or virtual COM), RS232, LAN, GPIB (895 only) | |
| Handler interface | 36-pin connector | |
| AC input | Voltage | 110/220 VAC ±10 % |
| Frequency | 47 – 63 Hz | |
| Power consumption | Max. 80 VA | |
| Operating Temperature | 0 °C to 40 °C | |
| Storage Temperature | -10 °C to 70 °C | |
| Relative humidity | Up to 80% | |
| Display | 4.3” TFT color display | |
| Dimensions (W x H x D) | without bezel: 280 mm × 88 mm × 370 mm (11.02“ x 3.46” x 14.56”) with bezel: 369 mm × 108 mm × 408 mm (14.52” x 4.25” x 16.06”) |
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| Weight | 5 kg (11 lbs) | |
| Safety | EN61010-1:2001, EU Low Voltage Directive 2006/95/EC | |
| Electromagnetic Compatibility | Meets EMC Directive 2004/108/EC, EN61326-1:2006 | |
Three-Year Warranty |
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| Standard accessories | AC power cord, 4-wire Kelvin clip test lead, 4-terminal test fixture, shorting bar, certificate of calibration, test report | |
| Optional accessories | Transformer test fixture TL89T1 | |
These meter are perfect tools for
- R&D
- Manufacturing
- Quality control
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