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Reed Instruments R5850 multimeter with digital display on a white background

REED Instruments R5850 Multifunction Process Calibrator

by Reed Instruments
$2,995.00
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The All-In-One Solution for Precision Field Calibration and Troubleshooting

The REED Instruments R5850 is a versatile, high-accuracy handheld calibrator designed for the rigorous demands of process control environments.

Engineered to eliminate the need for multiple single-function tools, the R5850 can both source and measure DC voltage, DC current (mA), eight different thermocouple types, and two RTD types. Whether you are commissioning a new control loop or diagnosing a faulty sensor, this instrument provides the precision and flexibility required to keep industrial processes running smoothly.

Key Technical Advantages

  • Dual-Function Performance: Seamlessly toggle between Source mode to simulate sensors and Measure mode to verify live process signals.

  • Broad Sensor Support: Calibrate a wide variety of temperature equipment with support for Pt100/Cu50 RTDs and J, K, T, E, R, S, B, and N-type thermocouples.

  • Integrated 24V Loop Power: Simplify transmitter testing by providing power to a 2-wire loop while simultaneously measuring the current output.

  • Process Loop Essentials: Capable of sourcing and measuring 0-10V DC and 0-22mA DC, making it the ideal tool for 4-20mA current loop maintenance.

  • User-Friendly Interface: Features a high-contrast backlit LCD for low-light environments and an intuitive keypad for rapid signal adjustments.

Ideal Applications for the REED R5850

  • PLC and DCS Maintenance: Verify input/output card performance by injecting known voltage and current signals.

  • Transmitter Bench Testing: Calibrate pressure, level, and flow transmitters before they are installed in the field.

  • Temperature Controller Tuning: Simulate sensor failures or specific temperature points to verify PID control logic.

  • Industrial HVAC Controls: Troubleshoot building automation systems that rely on RTD and thermocouple feedback.

  • Water & Wastewater Treatment: Maintain accurate chemical dosing by ensuring flow and pH transmitters are properly calibrated.

Measure Function
DC Voltage Range: 50, 500mV, 30V (upper display), 50V (lower display)
Resolution: 0.001, 0.01, 1mV, 0.001V
Accuracy:
50mV: ±(0.02% +10)
500mV: ±(0.02% +5)
30V (upper display): ±(0.02% +2)
50V (lower display): ±(0.02% +2)
DC Current Range: 20mA at 0 to 24mA
Resolution: 0.001mA
Accuracy: ±(0.02% +2)
Loop Current Range: 20mA (loop) at 0 to 24mA
Resolution: 0.001mA
Accuracy: ±(0.02% +2)
Resistance Range: 500, 5000Ω
Resolution: 0.01, 0.1Ω
Accuracy: ±(0.05% +10)
Frequency Range: 100Hz, 1, 10, 100kHz
Resolution: 0.01, 0.1, 1Hz
Accuracy: ±(0.01% +1)

Thermocouples
Type R Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 932°F (0 to 500°C): ±3.24°F (±1.8°C)
932 to 3212.6°F (500 to 1767°C): ±2.7°F (±1.5°C)
Type S Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 932°F (0 to 500°C): ±3.24°F (±1.8°C)
932 to 3212.6°F (500 to 1767°C): ±2.7°F (±1.5°C)
Type B Range: 1112 to 3308°F (600 to 1820°C)
Resolution: 1°F/°C
Accuracy:
1112 to 1472°F (600 to 800°C): ±3.96°F (±2.2°C)
1472 to 1832°F (800 to 1000°C): ±3.24°F (±1.8°C)
1832 to 3308°F (1000 to 1820°C): ±2.52°F (±1.4°C)
Type E Range: -58 to 1832°F (-50 to 1000°C)
Resolution: 0.1°F/°C
Accuracy:
-58 to 32°F (-50 to 0°C): ±1.62°F (±0.9°C)
32 to 1832°F (0 to 1000°C): ±2.7°F (±1.5°C)
Type K Range: -148 to 2501.6°F (-100 to 1372°C)
Resolution: 0.1°F/°C
Accuracy:
-148 to 32°F (-100 to 0°C): ±2.16°F (±1.2°C)
32 to 2501.6°F (0 to 1372°C): ±1.44°F (±0.8°C)
Type J Range: -76 to 2192°F (-60 to 1200°C)
Resolution: 0.1°F/°C
Accuracy:
-76 to 32°F (-60 to 0°C): ±1.8°F (±1°C)
32 to 2192°F (0 to 1200°C): ±1.26°F (±0.7°C)
Type T Range: -148 to 752°F (-100 to 400°C)
Resolution: 0.1°F/°C
Accuracy:
-148 to 32°F (-100 to 0°C): ±1.8°F (±1°C)
32 to 752°F (0 to 400°C): ±1.26°F (±0.7°C)
Type N Range: -328 to 2372°F (-200 to 1300°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±2.7°F (±1.5°C)
32 to 2372°F (0 to 1300°C): ±1.62°F (±0.9°C)
Type L Range: -328 to 1652°F (-200 to 900°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.53°F (±0.85°C)
32 to 1652°F (0 to 900°C): ±1.26°F (±0.7°C)
Type U Range: -328 to 752°F (-200 to 400°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.98°F (±1.1°C)
32 to 752°F (0 to 400°C): ±1.35°F (±0.75°C)
Type XK Range: -328 to 1472°F (-200 to 800°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±0.9°F (±0.5°C)
-148 to 1472°F (-100 to 800°C): ±1.08°F (±0.6°C)
Type BP Range: 32 to 4532°F (0 to 2500°C)
Resolution: 0.1°F/°C
Accuracy:
32 to 1472°F (0 to 800°C): ±2.16°F (±1.2°C)
1472 to 4532°F (800 to 2500°C): ±4.5°F (±2.5°C)

RTDs
Pt100 (2-wire/3-wire) Range: -328 to 1562°F (-200 to 850°C)
Resolution: 0.1°F/°C
Accuracy: ±0.72°F (±0.4°C)
Pt100 (4-wire) Range: -328 to 1562°F (-200 to 850°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt200 (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 482°F (-200 to 250°C): ±0.54°F (±0.3°C)
482 to 1166°F (250 to 630°C): ±2.88°F (±1.6°C)
Pt200 (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 482°F (-200 to 250°C): ±0.36°F (±0.2°C)
482 to 1166°F (250 to 630°C): ±1.44°F (±0.8°C)
Pt500 (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 932°F (-200 to 500°C): ±1.08°F (±0.6°C)
932 to 1166°F (500 to 630°C): ±1.62°F (±0.9°C)
Pt500 (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 932°F (-200 to 500°C): ±0.54°F (±0.3°C)
932 to 1166°F (500 to 630°C): ±0.72°F (±0.4°C)
Pt1000 (2-wire/3-wire) Range: -328 to 1202°F (-200 to 650°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt1000 (4-wire) Range: -328 to 1202°F (-200 to 650°C)
Resolution: 0.1°F/°C
Accuracy: ±0.27°F (±0.15°C)
Cu10 Range: -148 to 500°F (-100 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±3.24°F (±1.8°C)
Cu50 (2-wire/3-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±1.44°F (±0.8°C)
Cu50 (4-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Cu100 (2-wire/3-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.72°F (±0.4°C)
Cu100 (4-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.45°F (±0.25°C)
Pt100-392 (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Pt100-392 (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt100-JIS (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Pt100-JIS (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Ni120 (2-wire/3-wire) Range: -112 to 500°F (-80 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Ni120 (4-wire) Range: -112 to 500°F (-80 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±0.36°F (±0.2°C)

Source Function
DC Voltage Range: 100mV, 1, 10V
Resolution: 0.001, 0.01mV, 0.0001V
Accuracy: ±(0.02% +10)
DC Current Range:
20mA at 0 to 24mA
20mA (SIM) at 0 to 24mA

Resolution: 0.001mA
Accuracy: ±(0.02% +2)
Resistance Range: 400, 4000Ω, 40kΩ
Resolution: 0.01, 0.1, 1Ω
Accuracy:
±(0.02% +8)
±(0.05% +10)
±(0.1% +40)
Frequency Range: 200, 2000Hz, 20, 100kHz
Resolution: 0.01, 0.1, 1, 10Hz
Accuracy: ±(0.01% +1) (±3 dgt.), 100kHz: ±5 dgt.
Pulse Range: 100Hz, 1, 10kHz
Resolution: 1 cyc
Accuracy: ±2 dgt.
Switch Quantity Range: 100Hz, 1, 10, 100kHz
Resolution: 0.01, 0.1, 1, 10Hz
Accuracy: ±2 dgt.

Thermocouples
Type R Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 212°F (0 to 100°C): ±2.7°F (±1.5°C)
212 to 3212.6°F (100 to 1767°C): ±2.16°F (±1.2°C)
Type S Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 212°F (0 to 100°C): ±2.7°F (±1.5°C)
212 to 3212.6°F (100 to 1767°C): ±2.16°F (±1.2°C)
Type B Range: 1112 to 3308°F (600 to 1820°C)
Resolution: 1°F/°C
Accuracy:
1112 to 1472°F (600 to 800°C): ±2.7°F (±1.5°C)
1472 to 3308°F (800 to 1820°C): ±1.98°F (±1.1°C)
Type E Range: -328 to 1832°F (-200 to 1000°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±1.08°F (±0.6°C)
-148 to 1112°F (-100 to 600°C): ±0.9°F (±0.5°C)
1112 to 1832°F (600 to 1000°C): ±0.72°F (±0.4°C)
Type K Range: -328 to 2501.6°F (-200 to 1372°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±1.08°F (±0.6°C)
-148 to 752°F (-100 to 400°C): ±0.9°F (±0.5°C)
752 to 2192°F (400 to 1200°C): ±1.26°F (±0.7°C)
2192 to 2501.6°F (1200 to 1372°C): ±1.62°F (±0.9°C)
Type J Range: -328 to 2192°F (-200 to 1200°C)
Resolution: 0.1°F/°C
Accuracy:
-200 to -148°F (-200 to -100°C): ±1.08°F (±0.6°C)
-148 to 1472°F (-100 to 800°C): ±0.9°F (±0.5°C)
1472 to 2192°F (800 to 1200°C): ±1.26°F (±0.7°C)
Type T Range: -418 to 752°F (-250 to 400°C)
Resolution: 0.1°F/°C
Accuracy: ±1.08°F (±0.6°C)
Type N Range: -328 to 2372°F (-200 to 1300°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±1.8°F (±1°C)
-148 to 1652°F (-100 to 900°C): ±1.26°F (±0.7°C)
1652 to 2372°F (900 to 1300°C): ±1.44°F (±0.8°C)
Type L Range: -328 to 1652°F (-200 to 900°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.53°F (±0.85°C)
32 to 1652°F (0 to 900°C): ±1.26°F (±0.7°C)
Type U Range: -328 to 752°F (-200 to 400°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.98°F (±1.1°C)
32 to 752°F (0 to 400°C): ±1.35°F (±0.75°C)
Type XK Range: -328 to 1472°F (-200 to 800°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±0.9°F (±0.5°C)
-148 to 1472°F (-100 to 800°C): ±1.08°F (±0.6°C)
Type BP Range: 32 to 4532°F (0 to 2500°C)
Resolution: 0.1°F/°C
Accuracy:
32 to 1472°F (0 to 800°C): ±2.16°F (±1.2°C)
1472 to 4532°F (800 to 2500°C): ±4.5°F (±2.5°C)

RTDs
Pt100-385 Range: -328 to 1472°F (-200 to 800°C)
Resolution: 0.1°F/°C
Accuracy: ±0.6°F (±0.33°C)
Pt100-392 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt200-385 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 482°F (-200 to 250°C): ±0.36°F (±0.2°C)
482 to 1166°F (250 to 630°C): ±1.44°F (±0.8°C)
Pt100-JIS Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt500-385 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 932°F (-200 to 500°C): ±0.54°F (±0.3°C)
932 to 1166°F (500 to 630°C): ±0.72°F (±0.4°C)
Pt1000-385 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.36°F (±0.2°C)
Cu10 Range: -148 to 500°F (-100 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±3.24°F (±1.8°C)
Cu50 Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Cu100 Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.45°F (±0.25°C)
Ni120 Range: -112 to 500°F (-80 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±0.36°F (±0.2°C)

Function Specifications
Ramp Functions Source functions: Voltage, Current, Resistance, Frequency, Temperature
Ramps: Slow ramp, fast ramp, 25% step-ramp
Loop Power Function Voltage: 24V
Accuracy: 10%
Maximum current: 22mA, short circuit protected
Step Functions Source functions: Voltage, Current, Resistance, Frequency, Temperature
Steps: 25% of range, 100% of range

General Specifications
Display 20,000 count TFT color LCD display
Kick Stand Yes
Power Supply 1.2V x 6 AA rechargeable batteries
Auto Shut-off Yes
Low Battery Indicator Yes
Replaceable Test Leads Yes
Product Certifications CE, RoHS
Operating Temperature 14 to 131°F (-10 to 55°C)
Operating Humidity Range ≤95%
Storage Temperature -4 to 158°F (-20 to 70°C)
Max. Operating Altitude 6561' (2000m)
Dimensions 7.7 x 3.7 x 2.3" (195 x 95 x 58mm)
Weight 22.92oz (650g)

 

Included 

  • REED R5850 Multifunction Process Calibrator: A rugged, handheld instrument for comprehensive source and measure operations.

  • Professional Test Lead Set: Durable, high-insulation leads designed for secure connections to process terminals.

  • Heavy-Duty Alligator Clips: Large-opening clips for easy attachment to bus bars and terminal blocks.

  • Protective Hard Carrying Case: An impact-resistant case with custom foam padding to ensure the tool remains safe in industrial settings.

  • Batteries: Ships with a fresh set of batteries for immediate out-of-the-box operation.

Resources

Datasheet for the REED R5850 Multifunction Process Calibrator

Manual for the REED R5850 Multifunction Process Calibrator

Description

The All-In-One Solution for Precision Field Calibration and Troubleshooting

The REED Instruments R5850 is a versatile, high-accuracy handheld calibrator designed for the rigorous demands of process control environments.

Engineered to eliminate the need for multiple single-function tools, the R5850 can both source and measure DC voltage, DC current (mA), eight different thermocouple types, and two RTD types. Whether you are commissioning a new control loop or diagnosing a faulty sensor, this instrument provides the precision and flexibility required to keep industrial processes running smoothly.

Key Technical Advantages

  • Dual-Function Performance: Seamlessly toggle between Source mode to simulate sensors and Measure mode to verify live process signals.

  • Broad Sensor Support: Calibrate a wide variety of temperature equipment with support for Pt100/Cu50 RTDs and J, K, T, E, R, S, B, and N-type thermocouples.

  • Integrated 24V Loop Power: Simplify transmitter testing by providing power to a 2-wire loop while simultaneously measuring the current output.

  • Process Loop Essentials: Capable of sourcing and measuring 0-10V DC and 0-22mA DC, making it the ideal tool for 4-20mA current loop maintenance.

  • User-Friendly Interface: Features a high-contrast backlit LCD for low-light environments and an intuitive keypad for rapid signal adjustments.

Ideal Applications for the REED R5850

  • PLC and DCS Maintenance: Verify input/output card performance by injecting known voltage and current signals.

  • Transmitter Bench Testing: Calibrate pressure, level, and flow transmitters before they are installed in the field.

  • Temperature Controller Tuning: Simulate sensor failures or specific temperature points to verify PID control logic.

  • Industrial HVAC Controls: Troubleshoot building automation systems that rely on RTD and thermocouple feedback.

  • Water & Wastewater Treatment: Maintain accurate chemical dosing by ensuring flow and pH transmitters are properly calibrated.

Measure Function
DC Voltage Range: 50, 500mV, 30V (upper display), 50V (lower display)
Resolution: 0.001, 0.01, 1mV, 0.001V
Accuracy:
50mV: ±(0.02% +10)
500mV: ±(0.02% +5)
30V (upper display): ±(0.02% +2)
50V (lower display): ±(0.02% +2)
DC Current Range: 20mA at 0 to 24mA
Resolution: 0.001mA
Accuracy: ±(0.02% +2)
Loop Current Range: 20mA (loop) at 0 to 24mA
Resolution: 0.001mA
Accuracy: ±(0.02% +2)
Resistance Range: 500, 5000Ω
Resolution: 0.01, 0.1Ω
Accuracy: ±(0.05% +10)
Frequency Range: 100Hz, 1, 10, 100kHz
Resolution: 0.01, 0.1, 1Hz
Accuracy: ±(0.01% +1)

Thermocouples
Type R Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 932°F (0 to 500°C): ±3.24°F (±1.8°C)
932 to 3212.6°F (500 to 1767°C): ±2.7°F (±1.5°C)
Type S Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 932°F (0 to 500°C): ±3.24°F (±1.8°C)
932 to 3212.6°F (500 to 1767°C): ±2.7°F (±1.5°C)
Type B Range: 1112 to 3308°F (600 to 1820°C)
Resolution: 1°F/°C
Accuracy:
1112 to 1472°F (600 to 800°C): ±3.96°F (±2.2°C)
1472 to 1832°F (800 to 1000°C): ±3.24°F (±1.8°C)
1832 to 3308°F (1000 to 1820°C): ±2.52°F (±1.4°C)
Type E Range: -58 to 1832°F (-50 to 1000°C)
Resolution: 0.1°F/°C
Accuracy:
-58 to 32°F (-50 to 0°C): ±1.62°F (±0.9°C)
32 to 1832°F (0 to 1000°C): ±2.7°F (±1.5°C)
Type K Range: -148 to 2501.6°F (-100 to 1372°C)
Resolution: 0.1°F/°C
Accuracy:
-148 to 32°F (-100 to 0°C): ±2.16°F (±1.2°C)
32 to 2501.6°F (0 to 1372°C): ±1.44°F (±0.8°C)
Type J Range: -76 to 2192°F (-60 to 1200°C)
Resolution: 0.1°F/°C
Accuracy:
-76 to 32°F (-60 to 0°C): ±1.8°F (±1°C)
32 to 2192°F (0 to 1200°C): ±1.26°F (±0.7°C)
Type T Range: -148 to 752°F (-100 to 400°C)
Resolution: 0.1°F/°C
Accuracy:
-148 to 32°F (-100 to 0°C): ±1.8°F (±1°C)
32 to 752°F (0 to 400°C): ±1.26°F (±0.7°C)
Type N Range: -328 to 2372°F (-200 to 1300°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±2.7°F (±1.5°C)
32 to 2372°F (0 to 1300°C): ±1.62°F (±0.9°C)
Type L Range: -328 to 1652°F (-200 to 900°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.53°F (±0.85°C)
32 to 1652°F (0 to 900°C): ±1.26°F (±0.7°C)
Type U Range: -328 to 752°F (-200 to 400°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.98°F (±1.1°C)
32 to 752°F (0 to 400°C): ±1.35°F (±0.75°C)
Type XK Range: -328 to 1472°F (-200 to 800°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±0.9°F (±0.5°C)
-148 to 1472°F (-100 to 800°C): ±1.08°F (±0.6°C)
Type BP Range: 32 to 4532°F (0 to 2500°C)
Resolution: 0.1°F/°C
Accuracy:
32 to 1472°F (0 to 800°C): ±2.16°F (±1.2°C)
1472 to 4532°F (800 to 2500°C): ±4.5°F (±2.5°C)

RTDs
Pt100 (2-wire/3-wire) Range: -328 to 1562°F (-200 to 850°C)
Resolution: 0.1°F/°C
Accuracy: ±0.72°F (±0.4°C)
Pt100 (4-wire) Range: -328 to 1562°F (-200 to 850°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt200 (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 482°F (-200 to 250°C): ±0.54°F (±0.3°C)
482 to 1166°F (250 to 630°C): ±2.88°F (±1.6°C)
Pt200 (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 482°F (-200 to 250°C): ±0.36°F (±0.2°C)
482 to 1166°F (250 to 630°C): ±1.44°F (±0.8°C)
Pt500 (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 932°F (-200 to 500°C): ±1.08°F (±0.6°C)
932 to 1166°F (500 to 630°C): ±1.62°F (±0.9°C)
Pt500 (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 932°F (-200 to 500°C): ±0.54°F (±0.3°C)
932 to 1166°F (500 to 630°C): ±0.72°F (±0.4°C)
Pt1000 (2-wire/3-wire) Range: -328 to 1202°F (-200 to 650°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt1000 (4-wire) Range: -328 to 1202°F (-200 to 650°C)
Resolution: 0.1°F/°C
Accuracy: ±0.27°F (±0.15°C)
Cu10 Range: -148 to 500°F (-100 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±3.24°F (±1.8°C)
Cu50 (2-wire/3-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±1.44°F (±0.8°C)
Cu50 (4-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Cu100 (2-wire/3-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.72°F (±0.4°C)
Cu100 (4-wire) Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.45°F (±0.25°C)
Pt100-392 (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Pt100-392 (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt100-JIS (2-wire/3-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Pt100-JIS (4-wire) Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Ni120 (2-wire/3-wire) Range: -112 to 500°F (-80 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Ni120 (4-wire) Range: -112 to 500°F (-80 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±0.36°F (±0.2°C)

Source Function
DC Voltage Range: 100mV, 1, 10V
Resolution: 0.001, 0.01mV, 0.0001V
Accuracy: ±(0.02% +10)
DC Current Range:
20mA at 0 to 24mA
20mA (SIM) at 0 to 24mA

Resolution: 0.001mA
Accuracy: ±(0.02% +2)
Resistance Range: 400, 4000Ω, 40kΩ
Resolution: 0.01, 0.1, 1Ω
Accuracy:
±(0.02% +8)
±(0.05% +10)
±(0.1% +40)
Frequency Range: 200, 2000Hz, 20, 100kHz
Resolution: 0.01, 0.1, 1, 10Hz
Accuracy: ±(0.01% +1) (±3 dgt.), 100kHz: ±5 dgt.
Pulse Range: 100Hz, 1, 10kHz
Resolution: 1 cyc
Accuracy: ±2 dgt.
Switch Quantity Range: 100Hz, 1, 10, 100kHz
Resolution: 0.01, 0.1, 1, 10Hz
Accuracy: ±2 dgt.

Thermocouples
Type R Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 212°F (0 to 100°C): ±2.7°F (±1.5°C)
212 to 3212.6°F (100 to 1767°C): ±2.16°F (±1.2°C)
Type S Range: 32 to 3212.6°F (0 to 1767°C)
Resolution: 1°F/°C
Accuracy:
32 to 212°F (0 to 100°C): ±2.7°F (±1.5°C)
212 to 3212.6°F (100 to 1767°C): ±2.16°F (±1.2°C)
Type B Range: 1112 to 3308°F (600 to 1820°C)
Resolution: 1°F/°C
Accuracy:
1112 to 1472°F (600 to 800°C): ±2.7°F (±1.5°C)
1472 to 3308°F (800 to 1820°C): ±1.98°F (±1.1°C)
Type E Range: -328 to 1832°F (-200 to 1000°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±1.08°F (±0.6°C)
-148 to 1112°F (-100 to 600°C): ±0.9°F (±0.5°C)
1112 to 1832°F (600 to 1000°C): ±0.72°F (±0.4°C)
Type K Range: -328 to 2501.6°F (-200 to 1372°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±1.08°F (±0.6°C)
-148 to 752°F (-100 to 400°C): ±0.9°F (±0.5°C)
752 to 2192°F (400 to 1200°C): ±1.26°F (±0.7°C)
2192 to 2501.6°F (1200 to 1372°C): ±1.62°F (±0.9°C)
Type J Range: -328 to 2192°F (-200 to 1200°C)
Resolution: 0.1°F/°C
Accuracy:
-200 to -148°F (-200 to -100°C): ±1.08°F (±0.6°C)
-148 to 1472°F (-100 to 800°C): ±0.9°F (±0.5°C)
1472 to 2192°F (800 to 1200°C): ±1.26°F (±0.7°C)
Type T Range: -418 to 752°F (-250 to 400°C)
Resolution: 0.1°F/°C
Accuracy: ±1.08°F (±0.6°C)
Type N Range: -328 to 2372°F (-200 to 1300°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±1.8°F (±1°C)
-148 to 1652°F (-100 to 900°C): ±1.26°F (±0.7°C)
1652 to 2372°F (900 to 1300°C): ±1.44°F (±0.8°C)
Type L Range: -328 to 1652°F (-200 to 900°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.53°F (±0.85°C)
32 to 1652°F (0 to 900°C): ±1.26°F (±0.7°C)
Type U Range: -328 to 752°F (-200 to 400°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 32°F (-200 to 0°C): ±1.98°F (±1.1°C)
32 to 752°F (0 to 400°C): ±1.35°F (±0.75°C)
Type XK Range: -328 to 1472°F (-200 to 800°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to -148°F (-200 to -100°C): ±0.9°F (±0.5°C)
-148 to 1472°F (-100 to 800°C): ±1.08°F (±0.6°C)
Type BP Range: 32 to 4532°F (0 to 2500°C)
Resolution: 0.1°F/°C
Accuracy:
32 to 1472°F (0 to 800°C): ±2.16°F (±1.2°C)
1472 to 4532°F (800 to 2500°C): ±4.5°F (±2.5°C)

RTDs
Pt100-385 Range: -328 to 1472°F (-200 to 800°C)
Resolution: 0.1°F/°C
Accuracy: ±0.6°F (±0.33°C)
Pt100-392 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt200-385 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 482°F (-200 to 250°C): ±0.36°F (±0.2°C)
482 to 1166°F (250 to 630°C): ±1.44°F (±0.8°C)
Pt100-JIS Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.54°F (±0.3°C)
Pt500-385 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy:
-328 to 932°F (-200 to 500°C): ±0.54°F (±0.3°C)
932 to 1166°F (500 to 630°C): ±0.72°F (±0.4°C)
Pt1000-385 Range: -328 to 1166°F (-200 to 630°C)
Resolution: 0.1°F/°C
Accuracy: ±0.36°F (±0.2°C)
Cu10 Range: -148 to 500°F (-100 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±3.24°F (±1.8°C)
Cu50 Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.9°F (±0.5°C)
Cu100 Range: -58 to 302°F (-50 to 150°C)
Resolution: 0.1°F/°C
Accuracy: ±0.45°F (±0.25°C)
Ni120 Range: -112 to 500°F (-80 to 260°C)
Resolution: 0.1°F/°C
Accuracy: ±0.36°F (±0.2°C)

Function Specifications
Ramp Functions Source functions: Voltage, Current, Resistance, Frequency, Temperature
Ramps: Slow ramp, fast ramp, 25% step-ramp
Loop Power Function Voltage: 24V
Accuracy: 10%
Maximum current: 22mA, short circuit protected
Step Functions Source functions: Voltage, Current, Resistance, Frequency, Temperature
Steps: 25% of range, 100% of range

General Specifications
Display 20,000 count TFT color LCD display
Kick Stand Yes
Power Supply 1.2V x 6 AA rechargeable batteries
Auto Shut-off Yes
Low Battery Indicator Yes
Replaceable Test Leads Yes
Product Certifications CE, RoHS
Operating Temperature 14 to 131°F (-10 to 55°C)
Operating Humidity Range ≤95%
Storage Temperature -4 to 158°F (-20 to 70°C)
Max. Operating Altitude 6561' (2000m)
Dimensions 7.7 x 3.7 x 2.3" (195 x 95 x 58mm)
Weight 22.92oz (650g)

 

Included 

  • REED R5850 Multifunction Process Calibrator: A rugged, handheld instrument for comprehensive source and measure operations.

  • Professional Test Lead Set: Durable, high-insulation leads designed for secure connections to process terminals.

  • Heavy-Duty Alligator Clips: Large-opening clips for easy attachment to bus bars and terminal blocks.

  • Protective Hard Carrying Case: An impact-resistant case with custom foam padding to ensure the tool remains safe in industrial settings.

  • Batteries: Ships with a fresh set of batteries for immediate out-of-the-box operation.

Resources

Datasheet for the REED R5850 Multifunction Process Calibrator

Manual for the REED R5850 Multifunction Process Calibrator

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