Field Instruments

Product Overview

The REED R5850 Multifunction Process Calibrator is a versatile and high-precision calibrator designed for testing, calibrating, and diagnosing instrumentation used in process automation. Its robust field-ready construction and advanced measurement/source capabilities make it ideal for plant engineers, service technicians, instrumentation specialists, and maintenance teams.

This all-in-one calibrator supports voltage, current, resistance, frequency, thermocouples, RTDs, looping power for transmitters, and step/ramp testing — enabling efficient calibration of process control systems, transmitters, sensors, and more.

Key Features

• Measures and sources DC voltage, mA current, resistance, frequency, thermocouples, and RTDs
• Built-in 24 V loop power supply for driving transmitters while measuring mA loops
• High accuracy: output and measurement typical of 0.02% level
• Step and ramp functions for linearity testing, transmitter simulation and process check-out
• Rugged field design with clear dual-display screen allowing simultaneous view of input/output
• Storage for frequently-used test setups to streamline calibration tasks
• Rechargeable battery for portability with auto power-off and low battery indication
• Ideal for process automation, control panel calibration and field service work

Technical Specifications

Brand: REED Instruments
Model: R5850
Type: Multifunction Process Calibrator

Measure / Source Functions

• DC Voltage: range includes 50 mV / 500 mV / 30 V / 50 V; resolution to 0.001 mV / 0.001 V; accuracy ~±0.02% + small counts
• DC Current: range up to 24 mA; resolution 0.001 mA; accuracy ~±0.02% + small counts
• Loop Current Source/Measure: loop supply capability up to ~24 mA with built-in 24 V power supply
• Resistance: ranges e.g., 500 Ω / 5 kΩ; resolution down to 0.01 Ω; accuracy ~±0.05% + small counts
• Frequency / Pulse: frequency up to ~100 kHz; resolution down to 0.01 Hz; accuracy ~±0.01% +1 digit
• Thermocouples: Supports multiple types (K, J, T, E, R, S, B, N, L, U, XK, BP); wide temperature ranges
• RTDs: Support for Pt100, Pt1000, Ni120, etc. in 2/3/4-wire configurations

General & Mechanical

• Display: high-resolution TFT color LCD (~20,000 count)
• Power Supply: Rechargeable Ni-MH or AA battery pack
• Loop Power Output: 24 V supply (short-circuit protected) for transmitter testing
• Dimensions: Approx. 195 × 95 × 58 mm (7.7″ × 3.7″ × 2.3″)
• Weight: Approx. 650 g
• Operating Temperature: About –10°C to +55°C
• Storage Temperature: About –20°C to +70°C
• Includes: test leads, test clips, USB cable, thermocouple probe, power adapter, carrying case

Applications

• Calibrating process transmitters, sensors and instrumentation (voltage, mA, RTDs, thermocouples)
• Field verification and troubleshooting of loops, sensors and control panels
• Plant maintenance for automation systems, PLC-based process control
• Educational labs, calibration labs requiring high-precision multifunction calibrator
• Commissioning of automation systems and instrumentation racks

Why Buy from FieldInstruments.lk?

• 100% genuine REED Instruments calibrators with full authenticity
• Competitive pricing and fast, reliable delivery across Sri Lanka
• Local technical support for calibration workflows, test setups, and instrument selection
• After-sales service including calibration advice, accessories and consumables
• Trusted supplier for industrial instrumentation, automation and test & measurement solutions

The REED R5850 brings powerful calibration capabilities in one portable unit — ideal for professionals who require one tool covering multiple calibration tasks in process automation.

REED R5850 Sri Lanka
Multifunction Process Calibrator R5850
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Process instrumentation calibrator
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FieldInstruments.lk R5850

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk