Voltage, Current & Loop Calibrators

Specific instruments for calibrating voltage, current and loop. Many of the instruments in this section are multifunctional, and can calibrate more than one parameter. Includes portable calibrators and bench-top calibrators ideal for laboratories. Read More about Voltage, Current & Loop Calibrators
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32 Products
  1. Extech 412355A Current and Voltage Calibrator/Meter
    Extech logo
    Lead Time: 1-2 Weeks
    Extech 412355A Current and Voltage Calibrator/Meter
    (no reviews)
    £238.80 £199.00
    • Oyster case with flip-up display is ideal for handheld or benchtop applications
    • Display readings in mA or as a % of the 0 to 24mA range or as mV in voltage ranges
    • Provides adjustable 0 to 24mA and 0 to 10V calibration source
    199 Reward Points
    Price Match Guarantee
    412355A
  2. Time Electronics 7006 Loop Simulator and Source
    Time Electronics logo
    Only 1 In Stock
    Free UK Delivery
    Time Electronics 7006 Loop Simulator and Source
    (1)
    £318.00 £265.00
    • 7 set calibration points
    • 0.1% accuracy
    • 0 to 10 V or 4 to 20mA loop
    265 Reward Points
    Price Match Guarantee
    7006
  3. Extech PRC10 Current Calibrator
    Extech logo
    Lead Time: 1-6 Days
    Free UK Delivery
    Extech PRC10 Current Calibrator
    (no reviews)
    £322.80 £269.00
    • Small size calibrator
    • 0 to 24mA
    • 24V DC power source
    269 Reward Points
    Price Match Guarantee
    PRC10
  4. Martindale TEK300 20mA Loop Calibrator
    Martindale logo
    Only 1 In Stock
    Free UK Delivery
    Martindale TEK300 20mA Loop Calibrator
    (no reviews)
    £350.40 £292.00
    • Three built in modes
    • Overload protection
    • Range of 0 to 20mA
    292 Reward Points
    Price Match Guarantee
    MARTEK300
  5. Extech PRC15 Current and Voltage Calibrator
    Extech logo
    Free UK Delivery
    Extech PRC15 Current and Voltage Calibrator
    (no reviews)
    £378.00 £315.00
    • 0 to 24mA (-25% to 125%)
    • 0 to 20V DC calibration source
    • Measure DC process signals
    315 Reward Points
    Price Match Guarantee
    PRC15
  6. Time Electronics 1030 MicroCal Voltage & Current Source
    Time Electronics logo
    Lead Time: 1-2 Weeks
    Free UK Delivery
    Time Electronics 1030 MicroCal Voltage & Current Source
    (no reviews)
    £418.06 £348.38
    • Simulate various signal types
    • Multiple outputs
    • High accuracy
    348 Reward Points
    Price Match Guarantee
    1030
  7. Sika EC mAV 2 Pocket Loop Calibrator
    Sika logo
    Lead Time: 1-2 Weeks
    Free UK Delivery
    Sika EC mAV 2 Pocket Loop Calibrator
    (no reviews)
    £470.40 £392.00
    • Voltage and current loop signal measurement/generation
    • Pocket-sized design for ease of use
    • High accuracy
    392 Reward Points
    Price Match Guarantee
    EC MAV.2
  8. PASS PPC-24 Process Calibrator / Volt mA Calibrator
    PASS logo
    In Stock
    Free UK Delivery
    PASS PPC-24 Process Calibrator / Volt mA Calibrator
    (no reviews)
    £502.80 £419.00
    • Loop Measurement
    • Simulate a Transmitter
    • Auto Shut Off
    419 Reward Points
    Price Match Guarantee
    PPC-24
  9. Chauvin Arnoux CA 1631 Voltage & Current Process Signal Calibrator
    Chauvin Arnoux logo
    Lead Time: 1-6 Days
    Free UK Delivery
    Chauvin Arnoux CA 1631 Voltage & Current Process Signal Calibrator
    (no reviews)
    £658.80 £549.00
    • Simulates and measures DC current loop and DC voltage
    • DC current loop: 0 to 24mA
    • DC voltage: 0 to 24V
    549 Reward Points
    Price Match Guarantee
    P01654402
  10. Time Electronics Voltage / Current / Loop Calibrator
    Time Electronics logo
    Lead Time: 1-2 Weeks
    Free UK Delivery
    Time Electronics Voltage / Current / Loop Calibrator
    (no reviews)
    £696.00 £580.00
    • Works with current and voltage levels
    • Accuracy of 0.02%
    • Suitable for being used by a number of professions
    580 Reward Points
    Price Match Guarantee
    1048
  11. Time Electronics DC Voltage and Current Calibrator
    Time Electronics logo
    Only 1 In Stock
    Free UK Delivery
    Time Electronics DC Voltage and Current Calibrator
    (no reviews)
    £702.00 £585.00
    • High accuracy of 0.05%
    • Can measure and source current and voltage
    • Portable with its own carrying case
    585 Reward Points
    Price Match Guarantee
    1044
  12. Fluke 771 Milliamp Process Clamp Meter
    Fluke logo
    5 In Stock
    Free UK Delivery
    Fluke 771 Milliamp Process Clamp Meter
    (no reviews)
    £802.80 £669.00
    • Long battery life (40 hours)
    • 0.01 mA resolution
    • backlit dual display
    669 Reward Points
    Price Match Guarantee
    Fluke 771
  13. Fluke 705 Loop Calibrator
    Fluke logo
    Free UK Delivery
    Fluke 705 Loop Calibrator
    (no reviews)
    £896.34 £746.95
    • Source, simulate and measure mA
    • Highly accurate (0.02%) with resolution down to 0.001mA
    • Simultaneous mA and % of span display
    746 Reward Points
    Price Match Guarantee
    Fluke 705
  14. Time Electronics 1006 DC Millivolt Source
    Time Electronics logo
    Lead Time: 1-6 Days
    Free UK Delivery
    Time Electronics 1006 DC Millivolt Source
    (no reviews)
    £910.80 £759.00
    • Accuracy of 0.02%
    • 1V with up to 3 ranges
    • Protection against short circuit and overload
    759 Reward Points
    Price Match Guarantee
    1006
  15. Time Electronics 7005 Voltage, Current & Loop Calibrator
    Time Electronics logo
    Only 1 In Stock
    Free UK Delivery
    Time Electronics 7005 Voltage, Current & Loop Calibrator
    (no reviews)
    £934.80 £779.00
    • Ranges are fully programmable
    • Easy and simple to use – even for first timers
    • Min/Max Recording
    779 Reward Points
    Price Match Guarantee
    7005
  16. Fluke 772 Milliamp Process Clamp Meter
    Fluke logo
    3 In Stock
    Free UK Delivery
    Fluke 772 Milliamp Process Clamp Meter
    (no reviews)
    £1,006.80 £839.00
    • Wide range of ampage
    • 0.2% accuracy
    • Option for linear ramp of 25% steps
    839 Reward Points
    Price Match Guarantee
    Fluke 772
  17. Fluke 707 Loop Calibrator
    Fluke logo
    2 In Stock
    Free UK Delivery
    Fluke 707 Loop Calibrator
    (no reviews)
    £1,078.80 £899.00
    • Simultaneous mA and % span measurements
    • Quick and easy to use
    • For calibration, repair and maintenance of current loops
    899 Reward Points
    Price Match Guarantee
    Fluke 707
  18. Time Electronics 1007 DC Millivolt Potentiometer & Calibrator
    Time Electronics logo
    Free UK Delivery
    Time Electronics 1007 DC Millivolt Potentiometer & Calibrator
    (no reviews)
    £1,140.00 £950.00
    • 3 ranges: 0 to 1V, 0 to 100mV and 0 to 10mV
    • High accuracy
    • Microvolt null balance display
    950 Reward Points
    Price Match Guarantee
    1007
  19. Time Electronics 1021 DC Current Source
    Time Electronics logo
    Free UK Delivery
    Time Electronics 1021 DC Current Source
    (no reviews)
    £1,140.00 £950.00
    • 2.4 watts max output power
    • Three separate output ranges
    • Useful for lots of different applications
    950 Reward Points
    Price Match Guarantee
    1021
  20. Fluke 709 Precision Loop Calibrator
    Fluke logo
    Lead Time: 2-3 Weeks
    Free UK Delivery
    Fluke 709 Precision Loop Calibrator
    (no reviews)
    £1,190.40 £992.00
    • Portable handheld unit
    • Measure and source voltage or current
    • Power loops
    992 Reward Points
    Price Match Guarantee
    FLUKE709
  21. Price Drop | Save £88
    Fluke 773 Milliamp Process Clamp Meter
    Fluke logo
    In Stock
    Free UK Delivery
    Fluke 773 Milliamp Process Clamp Meter
    (no reviews)
    £1,260.00 £1,050.00
    • Measures mA signals without breaking the loop
    • Best in class with 0.2% accuracy
    • Dual backlit display with mA measurement and percent of 4 - 20 mA span
    1050 Reward Points
    Price Match Guarantee
    FLUKE773
  22. Fluke 787B Process Meter™
    Fluke logo
    4 In Stock
    Free UK Delivery
    Fluke 787B Process Meter™
    (no reviews)
    £1,266.00 £1,055.00
    • Two in one digital multimeter and mA loop calibrator
    • Compact design
    • Multitude of measurement functions and ability to measure, source and simulate up to 20mA DC
    1055 Reward Points
    Price Match Guarantee
    FLUKE 787B
  23. Time Electronics 1077 Milliamp Transducer Simulator
    Time Electronics logo
    Lead Time: 1-6 Days
    Free UK Delivery
    Time Electronics 1077 Milliamp Transducer Simulator
    (no reviews)
    £1,378.80 £1,149.00
    • Easy operation and LCD screen for measurement referencing
    • Three modes to choose from
    • Comes with free rubber protective case for fieldwork and travelling 
    1149 Reward Points
    Price Match Guarantee
    1077
  24. Fluke 789/E ProcessMeter
    Fluke logo
    3 In Stock
    Free UK Delivery
    Fluke 789/E ProcessMeter
    (no reviews)
    £1,558.80 £1,299.00
    • Loop calibrator and DMM in one tool
    • Built-in HART resistor
    • Full suite of multimeter functions including voltage, current and continuity
    1299 Reward Points
    Price Match Guarantee
    FLUKE789

Showing 1 - 24 of 32 products

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About Voltage, Current & Loop Calibrators

Also known as current loops, 4-20mA sources are one of the most common methods used in the process industry for transmitting data between sensors and the applications that control and monitor them. The main advantage of a current loop is it can be combined with a huge variety of different sensors to measure temperature, pressure, liquid flow, or light. This data is then compatible with a wide range of different management applications that interoperate with the data and react accordingly.

4-20mA current loops work by taking the results from the sensor and converting it to a proportional current. This means that a zero result causes a 4mA to be transmitted and a 20mA current is sent when the sensor is at full capacity. This information is then sent through copper cables to a receiver at the controller. The controller then decodes the sent signal into the format that is required by the process monitoring application.

The drawback with this method is that over long distances the signal can eventually erode as the voltage begins to wane. An engineer must also be careful when laying these cables to ensure that no electrically noisy systems are located close by, otherwise, they can affect the signal. The main precaution that can be taken is to ensure the use of shielded cabling but this can become too expensive if used over long distances.

To ensure that a current loop is operating effectively engineers often use current calibrators to test the cables and ensure that there are no issues that need resolving no matter what their source.