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Reed Instruments - Test and Measurement Equipment


REED SD-2010
Datalogging Heat Stress Meter

Datalogger with date/time stamp stores measurements on SD memory card without the need for software.

This heat stress datalogger measures temperature, humidity, and direct or radiant sunlight with Wet Bulb Globe Temperature (WBGT). With this information the SD-2010 determines the "What it feels like" temperature.

The SD-2010 is OSHA recommended and also features a user-adjustable WBGT audible alarm and the ability to adjust settings for indoor temperature measurement.

Using a SD card (max 16Gb), a user can select a desired sampling rate and quickly generate an Excel file on a SD card without the use of software. Optional accessories include a tripod and AC adapter for continuous long-term monitoring. Optional PC software also allows a user to track live measurements.


  • Wet Bulb Globe Temperature (WBGT) considers the effects of temperature, humidity and direct or radiant sunlight
  • In/Out function displays the WBGT value with or without direct sun exposure
  • Black Globe Temperature (TG) monitors the effects of direct solar radiation on an exposed surface
  • Also measures humidity, wet bulb, dew point and air temperatures
  • User adjustable WBGT threshold with audible alarm if threshold is exceeded
  • Data hold and Max/Min record
  • Real time SD memory card datalogger (memory card optional) with built-in clock and calendar
  • No extra software needed, just plug the SD card into the computer and it downloads directly to EXCEL
  • RS-232 and USB computer interface
  • LCD with backlight displays temperature in °C or °F
  • Includes brass black globe with sensor and soft carrying case
  • NIST Traceable Certification Available


  • Humidity Range: 5 to 95% RH
    Accuracy: ≥70% RH: ±(3% rdg + 1% RH); <70% RH: ±3% RH
  • Air Temp. Range: 0 to 50°C (32 to 122°F)
    ±0.8°C (±1.5°F)
  • Dew Point Temp. Range: -25.3 to 48.9°C (-13.5 to 120.1°F)
  • Wet Bulb Temp. Range: -21.6 to 50.0°C (-6.9 to 122.2°F)
  • Black Globe Temp. Range: 0 to 80°C (32 to 176°F)
    ±0.6°C (±1.1°F)
  • WBGT Temp. Range: Indoor: 0 to 59°C (32 to 138°F);
  • Outdoor: 0 to 56°C (32 to 132°F)
  • Accuracy: Indoor: ±1°C (±1.8°F);
    Outdoor: ±1.5°C (±2.7°F)
  • Auto Sampling Time: 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800, 3600 seconds
  • Memory Card: SD memory card, 1 GB to 16 GB (optional)
  • Power Supply: 6 x AA 1.5V UM3 batteries
  • Dimensions: Unit: 7.0 x 2.7 x 1.9�;
    Black Ball: 2.95 in.
  • Weight: 1.13lb

REED SD-2010 Heat Stress Meter Datalogger


Spec Sheet (PDF)


SD-2010 Heat Stress Meter Datalogger


REED SD-2010 Heat Stress Meter Datalogger


SD-2010 Heat Stress Meter


REED SD-2010 Heat Stress Meter Datalogger w/ NIST

NIST Traceable Certification Available

NIST Traceable Certification Available - (Optional)

Note: NIST Certification may delay shipment by 1 - 3 Days

Orders over $300 ship FREE to 48 States


Optional Accessories:

 Optional 4GB SD Memory Card

Optional SD Card

PC Software


8 Channel Windows Compatible Software

USB Adapter Cable


USB-01 Cable

AC Adapter (110V)


110V AC Adapter

Orders over $300 ship FREE to 48 States

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