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Weschler Instruments is a manufacturer and distributor of electrical and electronic measurement equipment. Customers worldwide use our products in power plants, steel mills, chemical plants, paper mills and other industrial applications that require rugged, reliable and accurate instrumentation.
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NK Technologies

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NK Technologies AC Current Transducers

AT & ATP AC Current Transducers - NK Technologies



AT and ATP current transducers combine a current transformer and signal conditioner in a single package. These transducers offer jumper selected current input ranges with proportional industry standard 4-20 mA, 0-5 VDC and 0-10 VDC outputs. The AT and ATP series are designed for application on “linear” or sinusoidal AC loads. Available in a split core or two types of solid core cases.

ATR and ATPR transducers combine a current transformer and True RMS signal conditioner in a single package. The ATR and ATPR series provide True RMS outputs on distorted waveforms found on VFD and ...


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AT / ATR-LS Series AC Current Transducers - NK Technologies

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NK Technologies AT/ATR-LS SERIES AC Current Transducers  800 - 1600 A

 AT/ATR-LS Series Current Transducers combine a current transformer and signal conditioner into a single package. The large, easy-to-install split-core design allows for installation over existing conductors without the need to disconnect the load, even in applications where there are multiple conductors per phase. For new installations, the installation is just as easy. Just remove the top portion of the sensing ring, place the conductors inside, and snap the top back in place. The transducer uses two wires to connect to the power supply and the load, ...

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ATPR "E-OUT" Series - AC Current Transducers - NK Technologies

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NK Technologies ATPR “E-OUT” SERIES  AC Current Transducers  2 - 200 A

  ATPR Series AC Current Transducers produce a 0–5 or 0–10 VDC RMS output on distorted waveforms found in the output of variable frequency drives, phase angle fired heating controls and on linear loads in “noisy” power environments. The ATPR Series AC Current Transducers are available in split-core housing only.

Applications

  • VFD Controlled ...

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DT Series, 3-Wire DC Current Transducers - NK Technologies

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DT SERIES, 3–WIRE

DC Current  Transducers

DT Series DC Current Transducers provide  a low cost way of measuring DC current in a small and easy-to- install housing.  The series is stable at a wide range of temperatures. The single range design and the use of a common for the power supply and output signal provide a price competitive option in an international market. Similar in concept to the DLT current  output  sensors,  this design produces your choice of 0–5 or 0–10 VDC to interface with controllers or data acquisition  systems lacking  the current signal capacity.

Applications

  • Photovoltaic Panel ...

NK Technologies DC Current Transducers

DT Series, 4-Wire, DC Current Transducers - NK Technologies

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DT SERIES, 4-WIRE

DC Current Transducers

DT Series DC Current Transducers combine a Hall effect sensor and signal conditioner into a single package for use in DC current applications up to 400 A. The DT Series DC Current Transducers unipolar and bipolar models have jumper selectable current input ranges and industry standard 0–20 mA, 4–20 mA, 0–5 VDC or 0–10 VDC outputs. The DT Series DC Current Transducers are available in split-core or solid-core enclosures.

Applications

  • Battery Banks
  • Transportation
  • Welding Processes
  • Photovoltaic Panels


NK Technologies AC Current Switches

NK Technologies AC Current Switches - AS1,AS3,ASX series

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If you control or monitor electric powered loads, you need current switches. Monitor fans, pumps, lights, and heaters for proper operation. Current switches give positive feedback that the load is operating and are much easier to install than alternatives like pressure switches, optical sensors, or zero speed switches.

AS and ASX current switches combine a current sensor, signal conditioner, and limit alarm in a single package. AS1 series are well suited to automation systems of all kinds with their universal solid-state outputs and a wide frequency response. AS3 series have a high current output that works well with relay logic control schemes. ASX series combine the AS3 design with a built in adjustable time delay. All ...

Search NK Technologies AC Current Switches - AS1,AS3,ASX series - 42 Items

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NK Technologies Smart AC Current Switches - ASM series

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NK Technologies ASM Series Load Monitoring Switches are designed for overload, underload or operating window applications. This Self Calibrating Smart-Switch uses the actual load current to set the trip point.

Range

   Solid-Core: 1.5 - 150A

   Split-Core:  2.8 - 150A

• Self-calibrating trip points
• Over, under or over/under ...

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NK Technologies Compact AC Current Switches - AS1 series

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The AS1 Series Compact Case Current Sensing Switches are a compact, inexpensive, easy-to-use ring which slips onto a conductor to give a solid-state contact for indication of current flow. Ideal for use in control panels, or wherever confirmation of current flow is desired, AS1 Series-CC current sensing switches are a cost-effective way to detect live conductors and see current flow to fans, heaters, pumps, lighting or other AC powered devices.
 
• Fixed 0.5A trip point
• Long life solid-state output
• No external power required
• Normally open or normally closed output
• 5 year warranty



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NK Technologies Easy Setup AC Current Switches - ASD series

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The ASD series sensors provide a limit alarm contact with the easiest adjustment method ever designed. 
 
• Digital display of trip point
• Top access trip adjustment
• Long life solid-state output
• AC or DC powered
• Solid core
• 5 year warranty



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NK Technologies Easy Setup AC Current Switches - ASL series

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The ASL Series Current Sensing Switches provide a current operated solid-state contact powered from the monitored circuit. 
 
• Trip point can be set before installation or with no load present
• Trip point indicated on potentiometer label
• Self-powered
• 2 second inrush delay
• 5 year warranty



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NK Technologies Large AC Current Sensing Switches - ASXP-MS & ASXP-LS series

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The NK Technologies ASXP-MS and ASXP-LS Series Current Switches combine a current transformer and signal conditioner into a single package. The large, easy-to-install, split-core design allows for installation over existing conductors without the need to disconnect the load, even in applications where there are multiple conductors per phase.  
ASXP-MS series:   The switch output is powered from the primary circuit
ASXP-LS  series:   The switch output is externally powered
 
• Sense currents to 1600 A
• Split-core for easy installation
• SPDT relay output
• Adjustable setpoint & delay
• Status LED
• DIN rail or ...

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NK Technologies DC Current Switches - DS1 series

The DS1 Series Current Sensing Switches are designed to trip a solid-state contact when there is DC current through the sensor window.

  • Compact, one-piece design:  Fits in easily amongst motor starters and power supplies in crowded control panels
  •  Input Isolation: Safer than shunt/relay combinations
  •  Unique power supply connection:  Sensor power and switched load share a common point making installation easy
  • Built-in mounting feet: Simple, two-screw installation allows for secure mounting


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NK Technologies DC Current Switches - DS3 series

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DS3 Series Current Sensing Switches combine a Hall effect sensor, signal conditioner and a limit alarm into a single package. The DS3 Series offers three jumper-selected current input ranges and frequency response from DC to 400 Hz. Available in a solid-core case with choice of relay or a universal solid-state output.
 
• DC & AC sensing
• Relay or solid-state output
• AC or DC powered
• 3 kV isolation
• Solid core
• 5 year warranty

 



NK Technologies Ground Fault Sensor

NK Technologies Ground Fault Detector - AG series

  • Fixed or selectable setpoint
  • Solid-state or relay output
  • Green LED Power-On indication
Detects ground fault (earth leakage) conditions by monitoring all current carrying conductors in a grounded single or three phase system.


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NK Technologies Ground Fault Relays - AGLD series

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The NK Technologies AGLD Series Ground Fault Sensors keep machinery and their operators safe from accidental shocks. 
 
• Large 1.82" (46.2mm) window
• 3 digit trip point display
• SPDT relay output
• Adjustable setpoint & delay
• Test button
• DIN rail mounting
• AC or DC powered
• UL listed



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NK Technologies AmpFlasher AC Current Indicators - ACI series

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The AMPFlasher™ ACI Series Current Indicator is a compact, inexpensive, easy-to-use LED ring which slips onto a conductor to give a flashing indication of current flow. Ideal for use in control panels, or wherever confirmation of current flow is desired, AMPFlasher™ current indicators are a costeffective way to detect live conductors and see current flow to fans, heaters, pumps, lighting or other powered devices.
 
• Provides quick visual indication of current flow
• Integral or remote LED
• No external power required
• Small size mounts easily on conductor
• 5 year warranty



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NK Technologies AC Voltage Transducers - VTR Series

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The VTR Series AC Voltage Transducers are high-performance True RMS transducers for sensing voltage in single- and three phase installations. Applicable on circuits of 120 V, 240 V, 480 V and 600 V, the VTR Series voltage transducers provide a fully isolated, 4–20 mA output proportional to rated voltage in sinusoidal situations.

  •  TRMS measurement
  •  Loop-powered output
  •  Input and output isolation
  •  DIN rail mount


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NK Technologies DC Voltage Tranducers - VTD Series

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The VTD Series Voltage Transducers are high-performance transducers for sensing voltage in DC powered installations. Applicable for use on circuits to 600 VDC, VTD voltage transducers provide fully isolated 0–5 VDC, 0–10 VDC, and 4–20 mA outputs proportional to rated nominal voltage in DC circuits.

  •  Input up to 600V, in 6 ranges
  •  V or mA output
  •  Input and output isolation
  •  DIN rail mount


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NK Technologies High Voltage AC/DC Transducer - VTU Series

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The VTU series of voltage transducers provide very high accuracy and safety in a panel or DIN rail mounted housing. One sensor design can measure DC or AC circuit voltages to 1200 volts, and produce an analog signal directly proportional to the voltage connected.

  •  Input up to 1200V AC/DC
  •  Externally powered from 24V AC/DC
  •  DIN rail or panel mount
  •  Input/Output/Power isolation


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NK Technologies Single-Phase Power Transducers - APS Series

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The APS Series measures true power (HP or kW) on balanced loads.  Ideal for mixing, grinding, machining and pumping applications where power measurement is needed, the APS Series includes a CT, voltage sensor and output signal conditioner in a single package designed for easy installation.

  • Also measures 3Ø balanced loads
  •  Direct connect to 120–600 VAC
  •  Input current to 180A
  •  4-20 mA output
  •  Loop powered
  •  Easy two-wire installation
  •  5 year warranty


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NK Technologies Three-Phase Power Transducers - APT Series

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APT Power Transducers produce full range output when the current transformer is producing its maximum signal, the primary voltage is at the range maximum and power factor is at unity.

  •  Direct connect to 120–600 V
  •  Works with 5 A or 333 mV CTs
  •  4-20 mA, 5 V & 10 V outputs
  •  Externally powered
  •  DIN rail or panel mount
  •  5 year warranty