Product Overview

The REED R4000SD Data Logging Vane Thermo-Anemometer is a high-precision airflow measurement instrument with full datalogging capability. It integrates a rotating vane probe for air velocity, built-in thermistors for air temperature, and contacts for external thermocouple temperature measurement, making it ideal for HVAC commissioning, environmental diagnostics, cleanroom audits, and industrial ventilation testing.

With SD-card logging, selectable sample intervals, and long-term monitoring support, the R4000SD offers both field usability and data-analysis capability.

Key Features

• Measures air velocity (in multiple units) and air temperature, plus contact temperature via Type J/K thermocouples
• Real-time datalogging to SD card (up to 16 GB), automatically exportable to Excel
• User-selectable sampling interval from 1 to 3600 seconds
• Backlit dual LCD display with Data Hold, Min/Max, and auto-shut-off functions
• Low-friction ball-bearing vane probe ensures high accuracy and fast response
• Tripod-mountable probe and instrument for long-term monitoring
• Rugged handheld design with hard carrying case and batteries included

Technical Specifications

Brand: REED Instruments
Model: R4000SD
Type: Data Logging Vane Thermo-Anemometer

Air Velocity

• Range: 0.4 to 30 m/s (≈ 79 to 5,906 fpm)
• Other units: 1.4 to 108 km/h, 0.9 to 67.1 mph, 0.8 to 58.3 knots
• Accuracy: ±(2% rdg + 40 fpm)
• Resolution: 0.1 units (for m/s, mph, etc.), 1 fpm

Air Temperature

• Range: 0 to 50 °C (32 to 122 °F)
• Accuracy: ±0.8 °C (±1.5 °F)
• Resolution: 0.1 °C

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 and resolution typical of thermocouple input

General

• Response Time: < 1 second
• Vane Probe Diameter: approx. 72 mm
• Display: Dual-LCD, backlit
• Datalogging: Yes, SD card up to 16 GB
• Sampling Rates: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds
• Power Supply: 6 × AA batteries or AC adapter (optional)
• Dimensions: approx. 203 × 76 × 38 mm (8″ × 3″ × 1.5″)
• Weight: approx. 515 g (1.13 lb)

Included Accessories

• Vane probe
• Hard carrying case
• Batteries
• Manual

Applications

• HVAC system commissioning and balancing
• Cleanroom airflow verification
• Duct and supply/exhaust air velocity & volume measurement
• Long-term monitoring of ventilation systems
• Filter performance and air change‐rate testing
• Environmental and industrial airflow diagnostics

Why Buy from FieldInstruments.lk?

• 100% genuine REED Instruments product
• Competitive pricing with island-wide delivery in Sri Lanka
• Local technical support and calibration advice for HVAC instrumentation
• After-sales service and spare accessory availability
• Trusted supplier of air-velocity, differential-pressure, and environmental test equipment

The REED R4000SD delivers advanced airflow measurement and logging capability in one professional handheld device—ideal for field and laboratory use.

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