Voltage, Current & Loop Calibrators
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Extech 412355A Current and Voltage Calibrator/Meter£231.48 £192.90- 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
192 Reward PointsPrice Match Guarantee412355A -
Free UK DeliveryTime Electronics 7006 Loop Simulator and Source£318.00 £265.00- 7 set calibration points
- 0.1% accuracy
- 0 to 10 V or 4 to 20mA loop
265 Reward PointsPrice Match Guarantee7006 -
Free UK DeliveryMartindale TEK300 20mA Loop Calibrator£350.40 £292.00- Three built in modes
- Overload protection
- Range of 0 to 20mA
292 Reward PointsPrice Match GuaranteeMARTEK300 -
Free UK DeliveryExtech PRC10 Current Calibrator£380.16 £316.80- Small size calibrator
- 0 to 24mA
- 24V DC power source
316 Reward PointsPrice Match GuaranteePRC10 -
Free UK DeliveryTime Electronics 1030 MicroCal Voltage & Current Source£418.06 £348.38- Simulate various signal types
- Multiple outputs
- High accuracy
348 Reward PointsPrice Match Guarantee1030 -
Free UK DeliveryExtech PRC15 Current and Voltage Calibrator£438.84 £365.70- 0 to 24mA (-25% to 125%)
- 0 to 20V DC calibration source
- Measure DC process signals
365 Reward PointsPrice Match GuaranteePRC15 -
Free UK DeliverySika EC mAV 2 Pocket Loop Calibrator£470.40 £392.00- Voltage and current loop signal measurement/generation
- Pocket-sized design for ease of use
- High accuracy
392 Reward PointsPrice Match GuaranteeEC MAV.2 -
Free UK DeliveryPASS PPC-24 Process Calibrator / Volt mA Calibrator£502.80 £419.00- Loop Measurement
- Simulate a Transmitter
- Auto Shut Off
419 Reward PointsPrice Match GuaranteePPC-24 -
Free UK DeliveryChauvin Arnoux CA 1631 Voltage & Current Process Signal Calibrator£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 PointsPrice Match GuaranteeP01654402 -
Free UK DeliveryTime Electronics Voltage / Current / Loop Calibrator£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 PointsPrice Match Guarantee1048 -
Free UK DeliveryTime Electronics DC Voltage and Current Calibrator£702.00 £585.00- High accuracy of 0.05%
- Can measure and source current and voltage
- Portable with its own carrying case
585 Reward PointsPrice Match Guarantee1044 -
Free UK DeliveryFluke 771 Milliamp Process Clamp Meter£802.80 £669.00- Long battery life (40 hours)
- 0.01 mA resolution
- backlit dual display
669 Reward PointsPrice Match GuaranteeFluke 771 -
Free UK DeliveryFluke 705 Loop Calibrator£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 PointsPrice Match GuaranteeFluke 705 -
Free UK DeliveryTime Electronics 1006 DC Millivolt Source£910.80 £759.00- Accuracy of 0.02%
- 1V with up to 3 ranges
- Protection against short circuit and overload
759 Reward PointsPrice Match Guarantee1006 -
Free UK DeliveryTime Electronics 7005 Voltage, Current & Loop Calibrator£934.80 £779.00- Ranges are fully programmable
- Easy and simple to use – even for first timers
- Min/Max Recording
779 Reward PointsPrice Match Guarantee7005 -
Free UK DeliveryFluke 772 Milliamp Process Clamp Meter£1,006.80 £839.00- Wide range of ampage
- 0.2% accuracy
- Option for linear ramp of 25% steps
839 Reward PointsPrice Match GuaranteeFluke 772 -
Free UK DeliveryFluke 707 Loop Calibrator£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 PointsPrice Match GuaranteeFluke 707 -
Free UK DeliveryTime Electronics 1007 DC Millivolt Potentiometer & Calibrator£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 PointsPrice Match Guarantee1007 -
Free UK DeliveryTime Electronics 1021 DC Current Source£1,140.00 £950.00- 2.4 watts max output power
- Three separate output ranges
- Useful for lots of different applications
950 Reward PointsPrice Match Guarantee1021 -
Free UK DeliveryFluke 709 Precision Loop Calibrator£1,190.40 £992.00- Portable handheld unit
- Measure and source voltage or current
- Power loops
992 Reward PointsPrice Match GuaranteeFLUKE709 -
Price Drop | Save £88
Free UK DeliveryFluke 773 Milliamp Process Clamp Meter£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 PointsPrice Match GuaranteeFLUKE773 -
Free UK DeliveryFluke 787B Process Meter™£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 PointsPrice Match GuaranteeFLUKE 787B -
Free UK DeliveryTime Electronics 1077 Milliamp Transducer Simulator£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 PointsPrice Match Guarantee1077 -
Free UK DeliveryFluke 789/E ProcessMeter£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 PointsPrice Match GuaranteeFLUKE789
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.
