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REED R5820 Loop Calibrator

Model: R5820

REED R5820 Loop Calibrator-

Downloads: manual datasheet
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This loop calibrator features mA sourcing, simulation and measurement. It has a 24V loop power supply and selectable step or ramp outputs.

REED R5820 Offers

This loop calibrator sources and measures mA. The R5820 features a 24V loop power supply, selectable step or ramp outputs and a large easy-to-read 5-digit LCD display.


  • mA sourcing and measurement
  • Large, 5-digit LCD display
  • 0-28 VDC measurement to check loop voltage
  • Basic measurement/sourcing accuracy of 0.02% and 0.05%, respectively
  • Simulate mA and % with 0.001% display span
  • Selectable step or ramp outputs
  • Internal 24V loop power supply
  • Low battery indicator and auto shut off

REED R5820 Specifications

DC Voltage Measurement
Range 28V
Output Range -0.200 to 28.000V
Resolution 1mV
Accuracy ±0.02% reading ± 2mV
DC Current Measurement
Range 20mA
Output Range -1.000 to 22.000mA
Resolution 0.001mA
Accuracy ±0.02% reading + 4µA
Loop Current Measurement
Range 20mA
Output Range 0.000 to 22.000mA
Resolution 0.001mA
Accuracy ±0.02% reading + 4µA
Current Output
Range 20mA
Output Range 0.000 to 22.000mA
Resolution 0.001mA
Accuracy ±0.05% setting + 4µA
Analog Transducer Output
Range -20mA
Output Range 0.000 to -22.000mA
Resolution 0.001mA
Accuracy ±0.05% setting + 4µA
Loop Power 24V
Accuracy ±10%
General Specifications
Display 5-Digit LCD
Kick Stand Yes
Battery Life Approx. 20 hours
Power Supply 2 AA Batteries
Auto shut off Yes (after 15 mins/off)
Low Battery Indicator Yes
Replaceable Test Leads Yes
Product Certifications CE
Operating Temperature 32 to 122°F (0 to 50°C)
Operating Humidity Range 0 to 85%
Storage Temperature 14 to 122°F (-10 to 50°C)
Dimensions 7.1 x 3.5 x 1.9" (180 x 90 x 47mm)
Weight 8.2oz (500g)

What's included with the REED R5820

  • Loop Calibrator
  • Test leads
  • Alligator clips
  • Protective holster
  • Batteries

Ideal Applications for the REED R5820

  • Testing loop powered isolators and two-wire transmitters.
  • Verifying and calibrating processes involving mA instrumentation.

Click on a category to view a selection of compatible accessories with the REED R5820 Loop Calibrator.

REED CA-05A Soft Carrying Case, 10 x 4.3 x 1.7"

Model: CA-05A

Features a main instrument compartment and a side pouch for accessories.

REED C-820 Soft Carrying Case, 8.5 x 5 x 1.75"

Model: C-820

Basic soft carrying case for small to medium sized instruments.

REED R1000 Safety Test Lead Set, Double Insulated

Model: R1000

Right angle and straight end flexible leads with shrouded banana plugs.

REED FC-300 Fused Test Lead Set

Model: FC-300

Set of two test leads with built-in fuses for added protection.

Calibration Lab
When you purchase a REED product it comes included with a one year warranty. We back our products.