Hsiang Cheng® Transducers
IIII [+] About Hsiang Cheng
Hsiang Cheng was established in 1979 with the goal of designing and manufacturing products for power measurement and distribution for utilities and industries. HC excels in developing the high quality, reliable products and is recognized all over the world.
- Transducers

Electrical Digital Transducers
HC Transducers are precision instruments with high accuracy designed for process, industrial or utlity applications. They are available in DIN-Rail enclosures for easy installation on DIN-Rails or on flat surfaces, incorporate Hall-Effect current sensors and can be used with external current and potential transformers. They provide a high voltage isolation between input and output. Models are available for measuring Watts, Watt-Hours, True RMS or Mean Voltage / Current, KVA and KVAR. Single-Channel and Three-Channel models are included.
- FP Series
- RP Series
- SP Series
- LP Series
FP Series
Extensive range of Watt or Var, Watt hour or Var hour, AC Voltage or Current, Power Factor, Phase Angle and Frequency Transducers.
- Transducers
- Industrial Transducers
Utility Watt and Var Transducer Series
- FPW101 1 element single phase 2W unbalanced
- FPW111 1.5 element single phase 3W unbalanced
- FPW201 2 element three phase 3W unbalanced
- FPW211 2.5 element three phase 4W unbalanced
- FPW301 3 element three phase 4W unbalanced
Utility Watt/Var Transducer Series
- FPWK101 1 element single phase 2W
- FPWK111 1.5 element single phase 3W unbalanced
- FPWK201 2 element three phase 3W unbalanced
- FPWK211 2.5 element three phase 4W unbalanced
- FPWK301 3 element three phase 4W unbalanced
Utility Watt/Var Transducer Series
- FPWWH101(watts) & FPKKH101(vars) 1 element single phase 2W
- FPWWH111(watts) & FPKKH111(vars) 1.5 element three phase 3W*
- FPWWH201(watts) & FPKKH201(vars) 2 element three phase 3W*
- FPWWH211(watts) & FPKKH211(vars) 2.5 element three phase 4W*
- FPWWH301(watts) & FPKKH301(vars) 3 element three phase 4W*
* = unbalanced
AC Voltage Transducer Series
- FPV Voltage type / 1 unit of avg. to RMS conversion
- FPVX Voltage type / 3 unit of avg. to RMS conversion
- FPVR Voltage type / True RMS conversion
AC Voltage Transducer Series
- FPV Current type / 1 unit of avg. to RMS conversion
- FPVX Current type / 3 unit of avg. to RMS conversion
- FPVR Current type / True RMS conversion
AC Current Transducer Series
- FPPF Power Factor / Unipolar output( as 0-10V, 4-20mA, 0-10mA ) D1:0.5 (C) to 1 to 0.5 (L) vs 0 to 1/2 span to full span output D2:0 (C) to 1 to 0 (L) vs o to 1/2 span to full span output
- FPPF Power Factor / Bipolar output ( as ±1mA, ±10mA, ±10V ) D3 : 0.5 (C) to 1 to 0.5 (L) vs -span to 0 to +span output D4 : 0 (C) to 1 to (L) vs -span to 0 to +span output
Phase Angle Transducer Series
- Accuracy ( 23±3°C ) 0.25% RO + 0.3°
- Max output load: DC current mode : maximum 10V drop
- Max output load: DC voltage mode : maximum 5mA drive
AC Frequency Transducer Series
- Accuracy ( 23±3°C ) 0.025% of named frequency + 0.0
- Max output load: DC current mode : maximum 10V drop
- Max output load: DC voltage mode : maximum 5mA drive
DC Isolating Transducer Series
- Accuracy ( 23±3°) 0.25% of effecive range
- Linearty & repeatability 0.05% typical
- Stability 0.007% ro per degree C
RTD Isolating Transducer Series
- Accuracy ( 23±3°) 0.3% ro
- Linearty & repeatability 0.1% typical
- Dielectric strength 4KV RMS AC between power/input & output terminals
RP Series
Extensive range of Watt or Var, Watthour/Varhour, AC Voltage & Current, Power Factor, Phase Angle and Frequency Transducers.
Utility Watt and Var Transducer Series
- RPW101 1 element single phase 2 W
- RPW200 1.5 element three phase 3 W
- RPW201 2 element three phase 3 W unbalanced
- RPW300 2.5 element three phase 4 W
- RPW301 3 element three phase 4 W unbalanced
Utility Watt/Var Transducer Series
- RPWK200 three phase 3 W
- RPWK201 three phase 3 W unbalanced
- RPWK300 three phase 4 W
- RPWK301 three phase 4 W unbalanced
Utility Watt/Var Transducer Series
- RPWH101(watt) single phase 2 W
- RPWH200(watt)/RPKH200(var) three phase 3 W
- RPWH201(watt)/RPKH201 three phase 3 W unbalanced
- RPWH300(watt)/RPKH300 three phase 4 W
- RPWH301(watt)/RPKH301 three phase 4 W unbalanced
Utility Watt/Var Transducer Series
- RPWWH101(watt) single phase 2 W
- RPWWH200(watt)/RPKKH200(var) three phase 3 W
- RPWWH201(watt)/RPKKH201 three phase 3 W unbalanced
- RPWWH300(watt)/RPKKH300 three phase 4 W
- RPWWH301(watt)/RPKKH301 three phase 4 W unbalanced
AC Voltage Transducer Series
- RPV Voltage 1 unit of avg. to RMS conversion
- RPVS Voltage 1 unit of av. to RMS conversion (self-powered)
- RPV2 Voltage 2 wires / 4~20mA ( 8~36V DC powered )
- RPVR Voltage True RMS conversion
AC Voltage Transducer Series
- RPVX Voltage 3 unit of avg. to rms conversion
- RPVXS Voltage 3 unit of avg. to rms conversion (self-powered type)
- RPVX2 Voltage 2 wires / 4~20mA ( 8~36V DC powered )
AC Current Transducer Series
- RPA Current 1 unit of avg. to rms conversion
- RPAS Current 1 unit of avg. to rms conversion (self-powered type)
- RPA2 Current 2 wires / 4~20mA ( 8~36V DC powered )
- RPAR Current True rms conversion
AC Voltage Transducer Series
- RPAX Voltage 3 unit of avg. to rms conversion
- RPAXS Voltage 3 unit of avg. to rms conversion (self-powered type)
- RPAX2 Voltage 2 wires / 4~20mA ( 8~36V DC powered )
Power Factor Transducer Series
- RPPF100 Power Factor 1Ø 2W / 1Ø 3W
- RPPF200 Power Factor 3Ø 3W / 3Ø 4W
Phase Angle Transducer Series
- RPPL100 Phase Angle 1Ø 2W / 1Ø 3W
- RPPL200 Phase Angle 3Ø 3W / 3Ø 4W
Frequency Transducer Series
- Accuracy ( 23±3°C ) 0.025% of named frequency + 0.0
- Max output load DC current mode : max 10V drop
- Max output load DC current mode : DC voltage mode : max 5mA drive
- Dielectric strength AC 2KV 1 minute between terminals; AC 2.6KV 1 minute / terminals to case
SP Series
Extensive lineup includes Watt or Var transducers, AC Voltage Transducer series.
- Transducers
- Industrial Transducers
Utility Watt and Var Transducer Series
- SPW101(watt) SPK101(var) 1 Element 1Ø 2W
- SPW201(watt) SPK201(var) 2 Elements 3Ø 3W unbalanced
- SPW301(watt) SPK301(var) 3 Elements 3Ø 4W unbalanced
Utility Watt and Var Transducer Series
- SPWK101 1 Element 1Ø 2W
- SPWK201 2 Elements 3Ø 3W unbalanced
- SPW301 3 Elements 3Ø 4W unbalanced
Utility AC Voltage Transducer Series
- SPV Voltage 1 unit of avg. to rms conversion
- SPVX Voltage 3 unit of avg. to rms conversion
AC Current Transducer Series
- Accuracy 0.25%RD + 0.02%RO/23 +/- 3C
- Rance Effective current 0-6A, nominal current 5A
DC Isolating Industrial Transducer Series
- Accuracy ( 23±3°C ) 0.25% ro / 23°C +3°C
- Response time & ripple < 400 ms from 0 to 99% RO at operatingRipple < 0.5% P-P RO
Temperature Isolating Transducer Series
- SPT-1 Single output RTD: PT 100Ω / 0°C
- SPT-2 Dual output RTD: PT 100Ω / 0°C
- SPT-2 Dual output RTD: CU 10Ω / 25°C
Resistance Transducer Series
- SPR – 1 Single output
- SPR – 2 Dual outputs / isolated each other ( 600V DC)
Position (Synchro Conversion) Transducer Series
- Accuracy ( 23±3°C ) Accuracy : 1% RO / 23 + 3 °C
- Output current range: DC 0 – 5 0 – 10 0 – 20 4 – 20mADC 0 – 1
- Output voltage range: 0 – 51 – 50 – 10 2 – 10
LP Series
Extensive lineup.
Utility Watt and Var Transducer Series
- LPW101 1 element single phase 2W
- LFPW111 1.5 element single phase 3W unbalanced
- LPW201 2 element three phase 3W unbalanced
- LPW211 2.5 element three phase 4W unbalanced
- LPW301 3 element three phase 4W unbalanced
Utility Watt/Var Transducer Series
- FPWK101 1 element single phase 2W
- FPWK111 1.5 element single phase 3W unbalanced
- FPWK201 2 element three phase 3W unbalanced
- FPWK211 2.5 element three phase 4W unbalanced
- FPWK301 3 element three phase 4W unbalanced
Utility Watt/Var Transducer Series
- LPWWH101(watts) & LPKKH101(vars) 1 element single phase 2W
- LPWWH111(watts) & LPKKH111(vars) 1.5 element three phase 3W unbalanced
- LPWWH201(watts) & LPKKH201(vars) 2 element three phase 3W unbalanced
- LPWWH211(watts) & LPKKH211(vars) 2.5 element three phase 4W unbalanced
- LPWWH301(watts) & LPKKH301(vars) 3 element three phase 4W unbalanced
AC Voltage Transducer Series
- LPV Voltage type / 1 unit of avg. to RMS conversion
- LPVX Voltage type / 3 unit of avg. to RMS conversion
- LPVR Voltage type / True RMS conversion
AC Current Transducer Series
- LPA Current 1 unit of avg. to rms conversion
- LPAX Current 3 unit of avg. to rms conversion
- LPAR Current True rms conversion
Power Factor Transducer Series
- LPPF Power Factor type Unipolar output
- LPPF Power Factor type Bipolar output
Phase Angle Transducer Series
- Accuracy ( 23±3°C ) 0.25% RO + 0.3°
- Max output load: DC current mode : maximum 10V drop
- Max output load: DC voltage mode : maximum 5mA drive
AC Frequency Transducer Series
- Accuracy ( 23±3°C ) 0.025% of named frequency + 0.0
- Max output load: DC current mode : maximum 10V drop
- Max output load: DC voltage mode : maximum 5mA drive
Hsiang Cheng manufactures a wide range of digital and relay panel meters for all types of measurement and control applications. A high accuracy / low cost ratio make these meters ideal for OEM applications as well as the most demanding industrial appplications.
Average Reading AC Current & Voltage Digital Panel Meters
- Accuracy: 0.25% fs or 5 counts, 3-3/4 series
- 0.15% fs + 1count, 4-1/2 series
- Stability: Temperature coefficient < 50 ppm per degree C
- Long term drift < 0.2% per year
True RMS, AC Current & Voltage Digital Panel Meters
- Accuracy: 0.25% fs or 5 counts, 3-3/4 series
- 0.15% fs + 1count, 4-1/2 series
- Stability: Temperature coefficient < 50 ppm per degree C
True RMS, AC Current & Voltage Digital Panel Meters
- Accuracy: 0.02% fs + 1 count)
- Temperature coefficient: < 20 ppm per degree C change
- Long term draft < 20 ppm year
- 4 digits-9999 counts. 5 digits-99999 counts
Digital Panel Meters AC Watt & Var Meters
- Accuracy: 0.25% to 0.5% fs depending on model
- Temperature coefficient: < 60 ppm per degree C change
- Long term drift < 0.2% per year
- 3-3/4 digits 3999 counts maximum.
- 4-1/2 digits 19999 counts maximum
Digital Panel Meters AC Watt & Var Meters
- Accuracy: 0.2% to 0.5% fs depending on model
- Temperature coefficient: < 80 ppm per degree C
- Long term drift < 0.2% per year
- 3-3/4 digits 3999 counts maximum.
- 4-1/2 digits 19999 counts maximum
Digital Programmable Watthour, Varhour Meters
- Accuracy: 4% rd ±0.1% (or 0.2% for some models) fs
- Output pulse: Photocouple isolator, open colector 30V, 50mA max
- PTxCT Ratio setting of 3 first effective digits, normal range 0-999
- Temp coeff: < 70 ppm wh version, < 100 ppm varh per degree C
- Seven digits 9999999 counts maximum
- Display: 0.3″ super rated LED
Digital Panel Meters, Frequency Panel Meters
- Accuracy: 0.02% fs + 1 count
- Temperature coefficient: < 20 ppm per degree C change
- Long term drift < 20 ppm year
- 4 digits-9999 counts. 5 digits-99999 counts
- Input resistance < 1 Megohoms
- Display: 0.56″ super rated LED
Digital Programmable Watthour, Varhour Meters
- Accuracy: 0.5%fs + 0.2°> 20% input current, 0.5%fs + 0.4°>10% input current
- Temperature coefficient: <50 ppm per degree c, long term drift <0.2% /year
- Long term drift < 20 ppm year
- 0.001-0.999 for PF, 0.010-360.0 degree for phase angle
- Response time Sample rate 1 pf per sec typically
- Display: 0.56″ super rated LED
True RMS AC Voltage and Current Digital Meters
- Digital setup for PT, CT ratio and auto range scale
- AC true RMS conversion
- Wide auxiliary power range AC / DC 30-250V
- High overload capability
- High accuracy of 0.2%
- 4-1/2 digits
Digital Panel Meters, Process Panel Meters
- True process dc rate monitor
- Wide range of DC voltage & current input
- Scaleable in engineering unit
- High accuracy of 0.05%
- Linear DC output or 24V DC power output (optional)
- Two-wire application
Programmable Process Panel Meters
- True process DC rate monitor
- Wide range of DC voltage & current input
- Voltage sapn 10mV to 400V
- High accuracy of 0.05%
- Current span 1 mA to 200 mA
- Scaleable display from -19999 to +19999C
Thermocouples & RTD Digital Panel Meters
- True process temperature monitor
- Thermocouple & RTD input
- High accuracy of 0.2% fs
- Optional customer specified output available
- 0.1 & 1.0 degree resolution
- 3-3/4 digits of maximum 3999 counts
Digital Panel Meters, Programmable Pressure Panel Meters spacer
- True process temperature monitor
- Thermocouple & RTD input
- High accuracy of 0.2% fs
- Standard output available per mV per count
- Optional customer-specified output available
Digital Panel Meters,DC Flow Rate Panel Meters
- Wide input range selection
- Process monitor & remote indication
- Available of 3-3/4 & 4-1/2 digits
- High accuracy of 0.2%
- Display with super rate LED
Digital Panel Meters, Frequency Rate Meters (RPM/Speed/Fluid)
- True process frequency/rpm/speed rate monitor
- Wide input sensitivity range from 10 mV to 100V
- Rangeable of display scale for 4 digital rate setting
- High accuracy of 0.05%
- Linear DC output or 24V DC power output (optional)
- 12 or 24V exciting voltage provided