Open Loop Current Sensor

open loop current senor
open loop current sensor

Wide Measurement Range

A single product can cover current detection from milliamperes to kiloamperes, with a range ratio of up to 1:1000, adapting to diverse application scenarios.

Fast Dynamic Response

Bandwidth exceeds 100kHz, and response time is less than 1μs, accurately capturing current transients (such as motor startup and short-circuit peaks).

Low Power Design

Typical operating current is less than 10mA, eliminating the need for closed-loop coil power, making it ideal for battery-powered or energy-saving devices.

Excellent Linearity

Full-range nonlinearity error is ≤0.5% , eliminating the need for segmented calibration.

Wide Temperature Range Stability

temperature drift is ≤0.02%/°C within the -40°C to +85°C range, ensuring accuracy in harsh environments.

High Isolation and Voltage Withstand

Primary and secondary side isolation voltage exceeds 2500VAC, effectively preventing high-voltage crosstalk and enhancing system safety.

Cost Advantages

Simple structure, high reliability

No fragile feedback coils,reducing maintenance costs.

Compact size, easy installation

it takes up minimal space, saving system layout costs and supporting PCB direct insertion

Overall cost advantages

Price lower than closed-loop sensors of the same specifications, offering excellent cost saving suitable for bulk purchases.

P/NRated inputMeasuring rangeOutputSupply voltageAccuracyKHZ
WHK-SF5S8L‍±20~125A0~±125AVC/2±0.8V5V1%0-30
WHK-LSV5S2L‍‍-V3.0±15~50A0~±50A2.5±2.0V5V1%0-30
WHK-LSP5S2L‍‍-BP±15~50A0~±50A2.5±2.0V5V1%0-30
WHK-DS5S2L‍±15~50A0~±50AVC/2±2.0V5V1%0-30
WHK-LSK3S1RT‍±15~100A0~±100A1.65±1.25V   3.3V1%0-30
WHK-ES5S2L‍±15~100A0~±100A2.5±2.0V5V1%0-30
WHK-LB15D4‍±50~300A0~±450A±4V±12~15V1%0-30
WHK-LB5S2‍±50~300A0~±300A2.5±2.0V5V1%0-30
WHK-BS5S1M‍‍L±200A0~±400A2.5±1.0V5V1%0-30
WHK-BS5S2‍±50~600A0~±600A2.5±2.0V5V1%0-30
WHK-BR15D4‍±50~600A0~±900A±4V±12~15V1%0-30
WHK-BR5S2‍±50~600A0~±600A2.5±2.0V5V1%0-30
WHK-BP15D4‍‍D±50~600A0~±900A±4V±12~15V1%0-30
WHK-BSU15D4‍±50~600A0~±900A±4V±12~15V1%0-30
WHK-BSU15D4L-A‍±50~600A0~±900A±4V±12~15V1%0-30
WHK-BS15D4LD-A‍±50~600A0~±900A±4V±12~15V1%0-30
WHK-N15D4‍‍B±50~600A0~±900A±4V±12~15V1%0-30
WHK-LTK15D4‍±50~600A0~±600A±4V±12~15V1%0-30
WHK-LTK5S2L‍±50~600A0~±600A2.5±2.0V5V1%0-30
WHK-LTB15D4L‍±200~1500A0~±3000A±4V±12~15V1%0-30
WHK-LTB5S2L‍0~±1500A0~±1500A2.5±2.0V5V1%0-30
WHK-F15D4‍±200~2000A0~±3000A±4V±12~15V1%0-30
WHK-FS5S2‍±200~2000A0~±2000A2.5±2.0V5V1%0-30
WHK-HAT15D4‍±400~2000A0~±4000A±4V±12~15V1%0-30
WHK-HAX15D4‍±500~2500A0~±5500A±4V±12~15V1%0-30
WHK-HB15D4‍±2000~10000A0~±12000A±4V±12~15V1%0-30
‍WHK-HC15D4‍±5000~20000A0~±22000A±4V±12~15V1%0-30
WHK-LSK5S2L‍±20~100A0~±100A2.5±2.0V5V1%0-30
WHK-EKA15D4‍±50~600A0~±900A±4V±12~15V1%0-30
‍WHK-EKA5S2‍±50~600A0~±600A2.5±2.0V5V1%0-30
WHK-EKB15D4‍±200~2000A0~±4000A±4V±12~15V1%0-30
WHK-EKB5S2‍±200~2000A0~±2000A2.5±2.0V5V1%0-30
WHK-FK15D4‍±200~2000A0~±4000A±4V±12~15V1%0-30
WHK-K15D4±400~1500A0~±3000A±4V±12~15V1%0-30
‍WHK-KS5S2‍±400~2000A0~±2000A2.5±2.0V5V1%0-30
‍WHK-KC15D4‍±500~2500A0~±3000A±4V±12~15V1%0-30
WHK-KA15D4‍±500~5000A0~±10000A±4V±12~15V1%0-30
WHK-KB15D4‍±1000~10000A0~±12000A±4V±12~15V1%0-30
WHK-EKF15D4‍±300~6000A0~±6500A±4V±12~15V1%0-30
WHK-KD15D4‍‍S±1000~6000A0~±12000A±4V±12~15V1%0-30
WHK-DHAB5S2L‍±20~100A/±350~750A0~±100A/2.5±2.0V5V1%0-30
0~±750A
WHK-YBS5S2L‍±100~1000A0~±1000AVC/2±2.0V5V1%0-50
‍WHK-YBR5S2L‍±100~1000A0~±1000AVC/2±2.0V5V1%0-50
WHK-JTK5S2L‍±100~1000A0~±1000A2.5±2.0V5V1%0-50
WHK-HC5F5S2L‍±200~900A0~±990A2.5±2.0V5V1%0-50
WHK-HAHE5S2L‍‍±100~1000A0~±1000A2.5±2.0V5V1%0-50
WHK-FB15D4‍‍‍M±200~2000A0~±4000A±4V±12~15V1%0-30