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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), 12 thermocouple types (R, S, B, E, K, J, T, N, L, U, XK, BP), and 10 RTD types (Pt100, Pt200, Pt500, Pt1000, Cu10/50/100, Pt100-392, Pt100-JIS, Ni120). 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, Pt200, Pt500, Pt1000, Cu10/50/100, Pt100-392, Pt100-JIS and Ni120 RTDs and R, S, B, E, K, J, T, N, L, U, XK and BP 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.

  • Type K Thermocouple Wire Probe: A ready-to-use probe for direct temperature measurement and thermocouple channel verification.

  • USB Cable: Connects the calibrator to a PC for data transfer.

  • Power Adapter: Recharges the internal battery pack for continuous bench or field use.

  • Batteries: Ships with six rechargeable AA 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), 12 thermocouple types (R, S, B, E, K, J, T, N, L, U, XK, BP), and 10 RTD types (Pt100, Pt200, Pt500, Pt1000, Cu10/50/100, Pt100-392, Pt100-JIS, Ni120). 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, Pt200, Pt500, Pt1000, Cu10/50/100, Pt100-392, Pt100-JIS and Ni120 RTDs and R, S, B, E, K, J, T, N, L, U, XK and BP 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.

  • Type K Thermocouple Wire Probe: A ready-to-use probe for direct temperature measurement and thermocouple channel verification.

  • USB Cable: Connects the calibrator to a PC for data transfer.

  • Power Adapter: Recharges the internal battery pack for continuous bench or field use.

  • Batteries: Ships with six rechargeable AA 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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