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Kalibrator AC/DC - DC Spänning/Ström


Suppliers/ Leverantörer:

 

 


Burster

Universal Calibrator DIGISTANT®
Built to use in the field
Model 4420
  • Calibration and measurement unit for voltages, currents, temperatures and resistances
  • Simultaneous transmission and measurement
  • Automatic ramp function
  • Simple menu assistance via display
  • Voltage range± 1 µV to ± 11.000 V
  • Current range± 200 nA to ± 22.000 mA

Application

The DIGISTANT ® type 4420 universal calibrator, built to use in the field, is ideal for checking and calibrating temperature measurement and control devices, and documenting the measurement results. The versatile functions of this portable unit allow to be used on-site or at a fixed location, on the test floor or in the laboratory.The unit allows the measurement of voltages, currents, temperatures and resistances.Simultaneous transmission and measurement allow, for example, controllers to be checked precisely.The automatic ramp function is used for controlling processes. The universal calibrator measures and simulates 8 types of thermocouples and Pt 100. In addition, resistances can be measured from 10 mOhm to 2 kOhm and simulated from 10 Ohm to 2 kOhm. The reference junction temperature can be entered manually via keypad; if required, however, an automatic reference to an internal or external point is also possible. Basic values and the corresponding delta-values can be stored with 10 freely programmable memories each for voltage, current, temperature and resistance. Relevant values can be added and subtracted by operating the delta + and delta - keys respectively.

Brochure Burster 4420


High Precision Calibration Source for Voltage, Current and ThermocoupleDIGISTANT®
Model 4462

  • High precision current and voltage source± 52 mA, ± 30 V
  • Precision simulation for all conventional thermocouple types (optional)
  • Basic accuracy 0.005 % of reading
  • RS232- and optional IEEE488 interface

Application

The precision calibration unit combines high accuracy, low drift, low noise and superior long-term stability with multiple functionality and simple operation.Ramps, delta + / delta -, and multiple setpoint storage make the operation of the device easier for the user. For that reason the application possibilities are many:

  • Testing current and voltage meters Precise testing of thermocouple temperature measuring instruments
  • Calibration of controllers, sensors, detection devices and other devices used in process control
  • Open-loop process control with the aid of integrated ramp functions.

The DIGISTANT ® type 4462 can be used both as a stand-alone table-top device, as well as in automatic, computer-assisted manufacturing and testing systems.


Description

It is possible to set currents of ± 200 nA ... ± 52 mA, voltages of ± 1µV ... ± 30 V and, optionally, temperature setpoint values of 14 thermocouple types.The output value is fed back via the sensor line to eliminate voltage drops across the measuring leads.The device has an adjustable current/voltage limitation. An external voltage divider of 1 up to 1:1000 can be considered internally.With the thermovoltage sourcing option you can enter °C, °F and K, the temperature scales ITS 90 or IPTS 68 and the comparison point mode constant/external. Furthermore, when sourcing thermocouples a calibrated external comparison point can be used, whereby the data for calibration in the device can be taken into consideration.Indication of the source value is carried out in large 12 mm figures on an illuminated graphics-LCD.The device can be operated both via the keyboard as well as the interface.

Brochure Burster 4462

Krohn-Hite Corp

Manual/GPIB Remote Control
DC Voltage and Current Calibrator
Model 521
  • 3 voltages ranges (1ppm resolution or 6 decades):
    ±100Vdc resolved to 100µV
    ±10Vdc resolved to 10µV
    ±100mVdc resolved to 0.1µV

  • 2 current ranges:
    ±100mAdc resolved to 0.1µA
    ±10mAdc resolved to 0.01µA





Model 522

It is:

  • a Reference, a Source, a Precision Supply,a Calibrator, a Simulator, a Standard
  • 3 Voltage Ranges
  • 2 Current Ranges
  • GPIB Programmability
  • Very Linear
  • High Accuracy
  • Very Low Output Noise
  • Highly Stable
  • Excellent Repeatability
  • 4-Wire Remote Sensing

GENERAL DESCRIPTION

The Model 522 is a microprocessor controlled DC Voltage Calibrator and is a highly versatile reference source designed to meet the needs of today's demanding requirements for accuracy and stability. The unit's specified accuracies are traceable to the National Institute of Standards and Technologies.



Model 523
±4ppm Precision DC Voltage/Current Source/Calibrator

  • Relative Accuracy (90 days): ±4ppm
  • Stability: ±0.5ppm
  • Resolution: 7½ Digits
  • Wideband Noise (100kHz): <7µVrms
  • 2 and 4-Wire Output
  • Auto Zero Offset Calibration (AZOC)
  • Maximum Load Current: 110mA
  • GPIB Interface

The NEW Krohn-Hite Model 523 Precision DC Source is a highly stable and repeatable dc voltage source and dc current source providing N.I.S.T. traceable voltages and currents for use in production, calibration labs, QA and QC departments, design labs, or any place where an accurate voltage and current source is needed.
Using Krohn-Hite's state-of-the-art reference, the 523 provides accurate and stable voltages from ±10nVdc to ±110.99999Vdc to within ±4ppm for 90 days (±8ppm for 1 year), and precise currents from ±10nA to ±110.99999mA to within ±8ppm for 90 days (±16ppm for 1 year). It is an extremely quiet source with <7µVrms of noise measured over a 10Hz to 100kHz bandwidth (<2µVrms 0.1Hz to 10Hz).
The 523 features a user friendly 7½ digit display and a membrane keyboard entry of all settings. Output settings can be modified using a plus/minus delta function, multiply/divide function and curser control keys that allow placing a curser on any digit to increment or decrement its value. Output 2-wire, 4-wire and chassis grounding are accomplished with one keystroke or over the GPIB interface bus.


Model CR103J
DC Voltage and Current Calibrator/Standard

CURRENT MODE

  • Variable Constant DC Current: Two ranges, ±10nA to ±100mAdc
  • High Resolution: ±0.0001% (1ppm) of both ranges
  • Minimum selectable setting: 10nA · High Accuracy: (I Mode): ±(0.005% of setting + 0.0005% of range)
  • Compliance (Power): ±100V (available on both ranges)
  • Noise: <2µA · Calibration Cycle: 12 months

VOLTAGE MODE

  • Variable Constant DC Voltage: Three ranges, ±100nV to ±10Vdc.
  • High Resolution: ±0.0001% (1ppm) on all three ranges
  • Compliance (Power): ±50mA
  • Noise: <5µV
  • "Crowbar" (Zero) Reference.