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894

BK PrecisionLCR

The BK Precision 894 is a high-accuracy bench LCR meter designed for precise impedance measurements of components and materials over a frequency range of 20 Hz to 500 kHz. Featuring a vivid 4.3-inch color TFT LCD, 0.05% basic impedance accuracy, and a versatile 201-point programmable list sweep function, the 894 is an ideal tool for R&D, manufacturing, and quality control. Standard interfaces include USB, RS232, and LAN.

Component TestingImpedance Analysis

Specifications

General

ParameterValue
InterfacesUSB (Host and Device), LAN, GPIB, Handler
Display4.3-inch color TFT LCD, 480 x 272 resolution
Warm-Up Time30 minutes
Programming Command SetSCPI
Warranty3 Years

Physical

ParameterValue
Power Supply110/220 V AC ±10%, 47 Hz to 63 Hz, power consumption < 80 VA
Operating Temperature0°C to 40°C
Dimensions (W×H×D)312 mm x 105 mm x 365 mm
Weight4.3 kg

Measurement Parameters & Functions

ParameterValue
Primary ParametersL, C, R, Z, Y, Rdc
Secondary ParametersD, Q, X, G, B, θ (deg), θ (rad)
Equivalent Circuit ModesSeries, Parallel
Impedance Measurement Range (Z)0.00001 Ω to 99.9999 MΩ
Resistance Measurement Range (R)0.00001 Ω to 99.9999 MΩ
Reactance Measurement Range (X)0.00001 Ω to 99.9999 MΩ
DC Resistance Measurement Range (Rdc)0.00001 Ω to 99.9999 MΩ
Capacitance Measurement Range (C)0.00001 pF to 9999.99 mF
Inductance Measurement Range (L)0.00001 µH to 9999.99 H
Dissipation Factor Range (D)0.00001 to 9.99999
Quality Factor Range (Q)0.00001 to 99999.9
Conductance Range (G)0.01 nS to 999.999 S
Susceptance Range (B)0.01 nS to 999.999 S
Admittance Range (Y)0.01 nS to 999.999 S
Phase Angle Range (Degrees)-179.999° to 179.999°
Phase Angle Range (Radians)-3.14159 to 3.14159
Math FunctionsDeviation, % Deviation

Test Signal Characteristics

ParameterValue
Test Frequency Range20 Hz to 500 kHz
Test Frequency Resolution0.01 Hz
Test Frequency Accuracy±0.01%
Test Signal Voltage Range5 mVrms to 2.0 Vrms
Test Signal Current Range50 µArms to 66.7 mArms
Source Output Impedance30 Ω, 50 Ω, 100 Ω
Automatic Level Control (ALC)Maintains constant voltage or current applied to the DUT
Test Signal MonitoringVoltage (Vm) and Current (Im) monitoring

Measurement Speed & Accuracy

ParameterValue
Basic Impedance Accuracy0.05%
Measurement Speed (Fast Mode)13 ms/reading
Measurement Speed (Medium Mode)67 ms/reading
Measurement Speed (Slow Mode)187 ms/reading
Trigger SourcesInternal, Manual, External, Bus

DC Bias Source

ParameterValue
Internal DC Bias Voltage Range-5 V to +5 V
Internal DC Bias Voltage Resolution1 mV
Internal DC Bias Voltage Accuracy±(1% + 2 mV)
Internal DC Bias Current Range-50 mA to +50 mA
Internal DC Bias Current Resolution10 µA
Internal DC Bias Current Accuracy±(1% + 20 µA)

Sweep & Graphic Analysis

ParameterValue
Sweep ParametersFrequency, AC Voltage, AC Current, DC Voltage, DC Current
Sweep TypeLinear, Logarithmic
Number of Sweep Points201 points
List Sweep Function201-point programmable sweep

Calibration & Compensation

ParameterValue
Open CompensationSupported
Short CompensationSupported
Load CompensationSupported
Cable Length Correction0 m, 1 m, 2 m, 4 m

Hardware Interfaces & Connectivity

ParameterValue
Test Port Configuration4-terminal pair
USB Host PortFront panel USB port for data storage
USB Device PortRear panel USB (USBTMC / Virtual COM protocol)
LAN PortStandard RJ45 interface
RS232 PortStandard DB9 female interface
Handler InterfaceStandard 36-pin optocoupler isolated interface

Display & User Interface

ParameterValue
Display TypeColor TFT LCD
Display Size4.3-inch
Display Resolution480 x 272 pixels
Zoom FunctionEnlarges measured values to full screen

Environmental & Compliance

ParameterValue
Storage Temperature Range-10°C to 55°C
Storage Humidity Range< 90% RH

Supported Configurations & Accessories

ParameterValue
Included Accessories4-terminal fixture, Kelvin clip test leads, power cord, certificate of calibration
Transformer Measurement ParametersNot supported

Interfaces

ParameterValue
GPIB PortStandard

Performance

ParameterValue
Measurement Resolution6-digit

Measurement Control

ParameterValue
Averaging Factor1 to 255
Trigger Delay Time0 ms to 60 s (1 ms steps)
Step Delay Time0 ms to 60 s (1 ms steps)
Cable Length Compensation0 m, 1 m, 2 m, 4 m
Comparator Bins9 primary bins (BIN1 to BIN9), OUT bin, and AUX bin

DC Bias

ParameterValue
External DC Bias Voltage0 to ±40 V

Storage

ParameterValue
Internal StorageSave/recall up to 100 setups (including 10 list sweep setups)
External StorageUSB host port supporting FAT16 and FAT32 file systems

Power

ParameterValue
Power Consumption80 VA max.
Power Line Frequency47 Hz to 63 Hz

Test Signal

ParameterValue
Test Signal AC Voltage Resolution100 µV (20 mV to 200 mV), 1 mV (200 mV to 2 V)
Test Signal AC Current Resolution1 µA (100 µA to 2 mA), 10 µA (2 mA to 20 mA)
Test Signal Voltage Accuracy±(10% + 2 mV) @ 1 kHz
Test Signal Current Accuracy±(10% + 10 µA) @ 1 kHz

Transformer Measurements

ParameterValue
Turns Ratio Range0.9 to 200
Mutual Inductance Range0.00001 µH to 99999.9 H
Leakage Inductance Range0.00001 µH to 99999.9 H
Primary/Secondary Resistance Range0.01 mΩ to 99.9999 MΩ

Compliance

ParameterValue
Safety ComplianceEN 61010-1
EMC ComplianceEN 61326-1

Environmental

ParameterValue
Operating AltitudeUp to 2000 m
Pollution Degree2

Technology

Impedance Measurement / LCR Metering

Applications

R&D, manufacturing, component testing, and quality control

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