Benchtop Temperature/Humidity Logger from Barnant

Benchtop Temperature/Humidity Logger from Barnant

  • Benchtop, Temperature, Humidity, Logger, Barnant Measure temperature and humidity with one instrument

  • Accepts two type J, K,or T thermocouple probes

  • Standby mode conserves batteries while logging data

  • Optional software for bidirectional RS-232 communications

  • Stores 850 pairs of measurements

Use the benchtop Temperature/Humidity Logger almost anywhere temperature and humidity needs to be monitored - laboratories, museums, art galleries, warehouses, protected outdoor environments, and more! The logger operates in three modes: two-channel temperature, humidity/temperature, and dew point/temperature.

This compact, portable Temperature/Humidity Logger is packed with features. Nonvolatile memory stores setup conditions (interval time or total logging time), thermocouple probe type, logged/stored parameters, and peak/valley values for each mode. Serial input/output allows for printer and computer compatibility, Optional data analysis software and serial printer available.

Measure and display either differential (DT) temperature or dual temperature simultaneously in the two-channel temperature mode. The temperature / humidity logger accepts one or two type J, K, or T thermocouple probes with ANSI miniconnectors. Features in this mode include autocalibration of probe, selectable °F or °C scale, selectable 0.1%/1° resolution up to 999.9° (1° above 999.9°), dual analog temperature output, and accuracy of ±0.1% of reading.

Measure and display both relative humidity and temperature (RTD) in the humidity/temperature mode. Use one of two interchangeable relative humidity/temperature probes. Wide-range probe 637-0050 has a compensated RH range from 0 to 100%. General-purpose probe 637-0052 has a compensated RH range from 5.0 to 95.0%. Other features in this mode include: automatic field calibration, a humidity resolution of 0.1% and 1% and analog humidity/RTD outputs.

In the dew point/temperature mode, temperature / humidity logger calculates the dew point from the relative humidity and temperature data, and displays it and the temperature (RTD) on the LCD. A dew point range of -94° to 158°F (-70° to 70°C) is available with wide-range humidity probe 637-0050, a dew point range of -58° to 122°F (-50° to 50°C) is available with general-purpose humidity probe 637-0052.

The Temperature/Humidity Loggeris housed in a molded ABS plastic housing and has a membrane keypad. Dual LCD shows scale and mode selected. Two AA batteries (included) provide 50 hours of continuous operation in standby mode. Purchase optional battery pack for up to 300 hours of continuous use. (We recommend using the optional AC wall mount power supply 691-9050 where line power is available). Order the L-shaped mounting bracket to attach either RH probe to the logger. See below to order software, logger kits, probes, and accessories.

Temperature/Humidity Logger Specifications:


Temperature ranges:

  • J: -310 to 1832°F (-190 to 1000°C)   

  • K: -418 to 2507°F (-250 to 1375°C)   

  • T: -418 to 752°F (-250 to 400°C)

Temperature resolution: 0.1/1° F or °C (switchable); autoranging to 1° above 999.9°.

Temperature accuracy: ±0.1% of reading or ±0.7°F (±0.4°C) above -238°F (-150°C) ±2°F (±1°C) below -238°F (-150°C)

Differential (DT) accuracy: ±0.5°F (±0.3°C)

Probes: one or two type J, K, or T thermocouple probes (sold separately)


RH ranges:

  • 637-0050 0.0 to 100.0% RH within -22 to 158°F (-30 to 70°C) temperature range

  • 637-0052 5.0 to 95.0% RH within 32 to 122°F (0 to 50°C) temperature range

RH resolution: 0.1% / 1% (selectable)

RH accuracy: 637-0050 ±2% RH from 10.0 to 96.0% RH; ±3% outside these limits


±RH from 10.0 to 90.0% RH; ±3% outside these limits

Temperature range: -32 to 212°F (0 to 100°C)

Temperature accuracy: ±2.7°F (±1.5°C)


Display: dual LCD - one 4-digit, 3/8"H and one 5-character alphanumeric, 3/16"H

Output: 0.0 to 1.0V analog output of temperature and humidity; bidirectional RS-232-C

Memory: Stores 850 pairs of readings for recall

Power: two AA batteries (included), optional battery pack, or optional AC adapter

Battery life: up to 50 hours of continuous operation in standby mode (with AA batteries) or up to 300 hours (with optional battery pack)

Low battery indication: yes

Dimensions: 6 1/2"Wx3 1/2"Hx7 3/4"D

Shipping weight: 3 lbs (1.4 kg)

For Quick Delivery From Stock - CANADA & USA TOLL FREE: 1-800-279-9912

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Heaters Controls And Sensors LTD., is a manufacturer of heaters, custom control panels, controls and sensors. We also provide instrumentation solutions for industrial, petroleum, chemical and food equipment applications.


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