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LH/LHE Series

The LH and LHE series are our stability environmental test chamber lines, ideal for steady-state temperature and humidity environmental testing on a smaller scale. This benchtop test chamber meets the needs of even the smallest scale product testing while ensuring quality throughout the entire process. Two low-to-high-temperature range configurations are shown below, and both come with a tightly-controlled humidity range of 10% to 98% relative humidity. 

The LH Series uses little power and the LH 1.5 can be plugged into a standard 15 amp wall outlet allowing for flexibility with your test chamber placement.

The LHE series can be used for testing low range thermal cycling reaching -20°C (-4°F)to further enhance its testing capabilities.

The LH Series has been UL/CSA 61010-1 certified by TUV Rheinland

Available in two standard temperature ranges:

  • LH Series  5°C to +94°C (41°F to +201°F)
  • LHE Series -20°C to +94°C (-4°F to +201°F)



Standard  2 Independently controlled Watlow EZ-ZONE PM controllers for manual setting temperature and humidity



Dashboard view enables chamber control at the chamber, at a desktop, or remotely via laptop or tablet

Profile Builder has drag-and-drop, web-browser functionality

Data Logging with onboard, multi-year logging of live and current data, anyplace anytime

Communication and Control uses standard, well-documented JSON API for easy integration with other test platforms

Security decreases test interference with three authentication methods and six permission levels 

View all the benefits of AES|XCHANGE

Watlow F4T Programmable Controller

Features a 4.3” capacitive touchscreen minimizing the chance for error. Ethernet communication supported by AES|XCHANGE

View more controller options


100 OHM Platinum RTD  is a highly-accurate sensor made from platinum components for increased sensitivity

View sensor options

Data Loggers

View additional data loggers


Safety Measures

We offer multiple types of safeties on our test chambers to help protect your product and your test chamber if anything malfunctions.

High Temperature Safety: (Standard)

A factory set high temperature safety prevents the chamber from exceeding safe operating conditions by disconnecting the heating circuit when an over temperature event occurs.

High/Low Temperature Safety:

A digital set temperature safety that will shut down the test chamber if it goes over a certain temperature or below a certain temperature.


Optional Features:

  • Shelf Modification (placement, size, number)
  • Dry Nitrogen Purge
  • Custom Porting Sizes
  • Window in Door and Internal Vapor Proof Light with External Switch
  • Water Demineralizer Cartridge System
  • Self Contained Water Recirculating System
  • Extended Temp. Range to -20°C
  • Desiccant Air Dryer (for lower RH Range)
457.2W x 660.4D x 1828.8H mm
18"W x 26"Dx 72"H
Scale Guy