Loop Calibrator

In electrical signalling an analog current loop is used where a device must be monitored or controlled remotely over a pair of conductors. Only one current level can be present at any time.

A major application of current loops is the industry standard 4-20 mA current loop for process control applications, where they are extensively used to carry signals from process instrumentation to PID controllers, SCADA systems, and Programmable logic controllers. They are also used to transmit controller outputs to the modulating field devices such as control valves. These loops have the advantages of simplicity and noise immunity, and have a large international user and equipment supplier base. Some 4-20 mA field devices can be powered by the current loop itself, removing the need for separate power supplies, and the "smart" HART Protocol uses the loop for communications between field devices and controllers. Various Automation Protocols may replace analog current loops, but 4-20 mA is still a principal industrial standard.

Fluke 789 Process Meter

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Minimum Order Quantity1 Piece
Model No.789
Digit Display3 Digit
BrandFluke
UsageIndustrial, Laboratory
DisplayDigital
ApplicationIndustrial

Safety rated multimeters with mA source. Now process technicians can do a lot more while carrying a lot less. The ultimate loop calibration multimeter - the Fluke 789 ProcessMeter. The Fluke 789 ProcessMeter was the first tool to combine a loop calibrator with a DMM to give process technicians double the power in one tool.

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Item Code: Fluke789

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Fluke 715 Loop Calibrator

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Minimum Order Quantity1 Piece
BrandFluke
Model715
Display TypeDigital
Accuracy100%
Weight900 g
ApplicationIndustrial

The Fluke 715 Volt/ mA Calibrator delivers outstanding performance, durability and reliability. Offered in the rugged Fluke 80 Series DMM package, the calibrator is compact, lightweight, and easy to carry. With a push button interface similar to the multifunction Fluke 740 Series Documenting Process Calibrators, the 715 is easy to use. It is EMI tolerant, dust and splash resistant, and features a removable battery door for quick battery changes.

Features at a Glance
  • Measure loop current (0-20 mA, 4-20 mA) signals with very high accuracy of 0.015% and 1 mA resolution
  • Measure voltage output process signals from PLCs, transmitters
  • Source or simulate 24 mA loop current
  • Source voltage to 100 mV or 10V
  • 24V loop supply with simultaneous current measurement
  • Enhanced voltage and current measure and source accuracy
  • Improved battery life
  • 250 ohm HART resistor with loop power
  • Holster features test lead storage
  • Compatible with toolpack magnetic hanging system
  • Step and linear ramp output function
  • Configurable zero and span settings

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Loop Calibrator 705

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Minimum Order Quantity1 Piece
BrandFluke
Model705
Voltage220 V
Frequency50-60 Hz
Display TypeDigital
Power SourceElectric

The Fluke 705 Loop Calibrator is a source and measurement tool for 0 to 20 mA or 4 to 20 mA current loop testing and a measurement tool for dc voltage from 0 to 28 V. The calibrator does not source and measure simultaneously.

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Packaging Details: Loop Calibrator 705

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Fluke 787 Process Meter

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Minimum Order Quantity1 Piece
Brandfluke
ModelFluke 1586
UsageIndustrial, Laboratory
Display TypeDigital, Analog

The Fluke 787 was the first tool to combine a DMM and a loop calibrator to give process technicians double the power in one tool. Now it’s even better, the range is extended with the Fluke 789 – the ultimate loop calibration multimeter. The Fluke 789 has a 24-Volt loop supply reducing the need for taking a separate power supply when doing offline transmitter testing. And with its built-in, selectable 250-Ohm Hart® resistor, it also eliminates the need to carry a separate resistor with you. Now process technicians can do a lot more while carrying a lot less.

FEATURES:

  • 24 V Loop power supply
  • Very large dual display
  • Enhanced backlight with 2 brightness settings
  • 1200 ohm drive capability on mA source
  • HART mode setting with loop power and a built-in 250 ohm resistor
  • 0% and 100 % buttons to toggle between 4 and 20 mA sourcing for a quick span check
  • Externally accessible fuses for easy replacement
  • Infrared-port to process data in Fluke View Forms (V2.1) software

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Item Code: Fluke787

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Loop Calibrator 707

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Minimum Order Quantity1 Piece
Display TypeDigital, Analog
Model707

The Fluke 707 Loop Calibrator (hereafter, the Calibrator) is a compact sourcing and measuring tool. The Calibrator tests current loops of 0-20 mA or 4-20 mA and measures dc voltage to 28 V. It comes with a set of alligator-clip test leads, a 9 V alkaline battery, and this Instruction Sheet.

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Item Code: Fluke-707

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