The LCS140 is a Wet-Bulb/Dry-Bulb system for monitoring high temperature humidity levels. Includes ISO17025 accredited calibration certificate.



Need to record humidity at high temperatures? Look no further than the LCS140 Wet-Bulb/Dry-Bulb system. Ditch the complexity of calculating with a psychrometer, the LCS140 coupled with the MadgeTech 4 Software does all the work for you!

Capable of withstanding temperatures from -40 °C to +140 °C (-40 °F to +284 °F), the dual probe LCS140 takes wet-bulb and dry-bulb readings simultaneously to determine the amount of humidity present.

The LCS140 Includes:
(1) LCS140 Dual Probe Data Logger
(1) Aluminum Reservoir Bottle (recommended to use distilled water only)
(6) Wet-Bulb Socks
(1) Hanging Fixture

The LCS140 is compatible with the latest MadgeTech 4 Software making starting, stopping, and downloading simple and easy. Graphical, tabular, and summary data is provided for analysis and can be viewed as customizable engineering units.

*Note: Only distilled water is recommended for use in the reservoir bottle.


Memory 32,767 readings
Reading Rate1 reading every second up to 1 reading every 24 hours
Battery Life1 year typical
(1 minute reading rate at 25 °C/77 °F)
Material316 Stainless Steel / Radel
IP RatingIP68
Operating Environment-40 °C to +140 °C (-40 °F to +284 °F)
0 %RH to 100 %RH, 0.002 PSIA to 100 PSIA


Temperature SensorRigid RTD Probe
Temperature Range-40 °C to +140 °C (-40 °F to +284 °F)
Temperature Resolution0.01 °C (0.02 °F)
Calibrated Accuracy±0.1 °C (±0.18 °F)


LCS140 Specification Sheet

LCS140 Product User Guide

Support Videos

LCS140 | Product Overview

LCS140 | Live Overview


Part Numbers

LCS140 – 902168-00


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