Product Overview

The REED R4500SD is a high-precision hot-wire thermo-anemometer featuring full data-logging capability. It is designed to measure air velocity, air temperature, and contact temperature via a built-in thermocouple input—all in one instrument. This makes it ideal for HVAC commissioning, ventilation testing, clean-room airflow audits, and long-term monitoring.

With its hot-wire probe for accurate low-velocity measurements, SD-card logging, selectable sampling intervals, and rugged field design, the R4500SD delivers professional performance for demanding environments.

Key Features

• Measures air velocity, air temperature, and contact temperature via Type J/K thermocouple
• Hot-wire probe for high sensitivity in low-velocity airstreams
• Real-time data logger with integrated SD memory card (up to 16 GB)
• User-selectable sampling interval from 1 to 3,600 seconds
• Large back-lit dual LCD display for simultaneous read-out
• Data Hold, Max/Min functions, tripod mountable for long-term monitoring
• Auto shut-off and low-battery indicator for field reliability
• Hard carrying case and batteries included

Technical Specifications

Brand: REED Instruments
Model: R4500SD
Type: Data Logging Hot-Wire Thermo-Anemometer

Air Velocity

• Range: ~0.2 to 25 m/s (approx. 40 to 4,921 fpm)
• Other units: ~0.7 to 90 km/h, ~0.5 to 55.9 mph, ~0.4 to 48.6 knots
• Accuracy: ±(5% of reading + 20 fpm)
• Resolution: 0.1 m/s (or 1 fpm)

Air Temperature

• Range: 0 to 50 °C (32 to 122 °F)
• Accuracy: ±0.8 °C
• Resolution: 0.1 °C / 0.1 °F

Contact Temperature (Thermocouple Input)

• Type K: –100 to +1300 °C (–148 to 2372 °F)
• Type J: –100 to +1200 °C (–148 to 2192 °F)
• Accuracy: ≥ –50 °C: ±(0.4% + 1 °F); ≤ –50 °F: ±(0.4% + 1 °C)

General

• Dual 5-digit back-lit LCD display
• Real-time clock & date stamp
• Data logging to SD card (up to 16 GB)
• Sampling interval: 1-3600 sec
• Automatic shut-off after ~10 minutes idle
• Power: 6 × AA batteries or optional AC adapter
• Dimensions: approx. 203 × 76 × 38 mm
• Weight: approx. 515 g
• Probe length: Telescopic 280 – 940 mm (11–37″)

Included Accessories

• Hot-wire probe
• Hard carrying case
• Batteries

Applications

• HVAC system commissioning & airflow balancing
• Clean-room airflow validation
• Duct and diffuser airflow measurement
• Long-term airflow and temperature logging
• Filter performance testing in ventilation systems
• Environmental and industrial airflow diagnostics

Why Buy from FieldInstruments.lk?

• 100% genuine REED Instruments product
• Competitive pricing with delivery across Sri Lanka
• Technical support for setup, data logging use, calibration advice
• Trusted supplier for airflow, temperature and environmental measurement equipment

The REED R4500SD is a robust, field-ready solution for airflow and temperature measurement, with advanced logging features for professionals.

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