Product Information

Criterion Temperature & Humidity Benchtop

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The Criterion temperature/humidity chamber series provides an economical and space-saving solution for a variety of testing requirements.
Wide temperature range from -70ºC to +180ºC
Lowest temperature: -20, -35, or -70°C (-4, -35, or -100°F)
Highest temperature: 180°C (354°F)
Faster change rate (heat/cool) up to 5°C/min.
The Criterion series can cycle temperatures at a rate of up to 5°C/min. without requiring liquid nitrogen. Significant test time can be saved, as well as creating added thermal stress on your samples. To demonstrate performance, ESPEC uses the international standard IEC 60068 3-5 measured at the supply air. Temperature cycles are run from hot to cold extremes, and the middle 80% of the transition is timed to determine performance. Your actual cycling results will vary depending on methodology, including the start and end temperatures, and the amount of samples loaded.
Chamber sizes: 1.5 or 4 cubic feet
Fully programmable with Watlow F4 controller
The extended temperature ranges of the Criterion series make testing at extreme conditions possible without buying a larger, stand alone chamber. Two chamber sizes are available, as well.
The programmer includes a temperature alarm as just one part of ESPEC’s three-tiered over-temperature protection system. A thermal fuse and a user-set independent limit are also included. In addition, a specimen power terminal allows the user to safely operate powered equipment inside or with the chamber.
Six models, two sizes: 1.5 and 4 cubic foot
Wide temperature range: up to -70 to 180°C
New model with 5°C/min. change rate
Interior is 3.5” wider than competitors
Space-saving design
Your most economical choice

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About us

Unitemp is a specialist environmental engineering company offering test chambers and equipment for a wide range of environmental conditions; temperature, humidity, vibration, highly accelerated stress screening or highly accelerated life test.

They have extensive experience in developing solutions for electronics, automotive, transport, aerospace & laboratory markets. With the recent push toward electric and hybrid vehicles to reduce emissions, test chambers for battery cell evaluation & stress testing have also become a major priority.

Unitemp is UK distributor for the world-renowned range of ESPEC environmental test chambers and also specialises in the design, installation and commissioning of modular custom environmental rooms.

Bench-top Temperature & Humidity Chambers
Excellent environmental testing performance in a compact design. Available in 20L and 60L capacities with temperature ranges from −20, −40, or −60℃, to ＋150 or ＋180℃ .

Thermal Shock Chambers
ESPEC’s Thermal Shock series chambers offer the utmost flexibility. Available in several models to suit different testing needs

Walk-In Test Rooms
Standard and custom walk-in rooms delivering easy access to temperature or humidity testing.

Industrial Ovens / Temperature Chambers
Precision industrial ovens for high-temperature testing, heat treatment or drying for production lines.

Test Chamber Management Tools
The new “ESPEC ONLINE SERIES” provides easy-to-use test chamber management via a network.

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Articles/Press Releases

11/04/2023 - Warwick University Commission New Fast Rate ESPEC Chamber
Power Electronics Applications and Technology in Energy Research at Warwick university have installed and commissioned a new ESPEC ARS060680 fast rate environmental test chamber from Unitemp Ltd.
11/04/2023 - Unitemp at Southern Manufacturing 2023
Next month, 7-9th February, Unitemp will exhibit at the Southern Manufacturing and Electronics Show, at the Farnborough International Exhibition and Conference Centre.
19/01/2023 - Environmental Engineering Specialists Unitemp at Southern Manufacturing 2023
Next month, 7-9th February, Unitemp will exhibit at the Southern Manufacturing and Electronics Show, stand # M85, at the Farnborough International Exhibition and Conference Centre.
19/01/2023 - Release of the new Refrigerant R473A for Espec environmental Test chambers.
Espec, represented in the UK by Unitemp, are pleased to announce the release of the new Refrigerant R-473A for their environmental test chambers. This new refrigerant can be ordered as an option to replace R23 and R-508A. R-473A is an environmentally friendly low GWP refrigerant that has cleared regulations globally. Its characteristics make it possible to reduce both power consumption and the amount of refrigerant required.
19/01/2023 - Warwick University Commission New Fast Rate ESPEC Chamber
Power Electronics Applications and Technology in Energy Research at Warwick university have installed and commissioned a new ESPEC ARS-0680-15 fast rate environmental test chamber from Unitemp Ltd.
15/02/2021 - Overcome 5G implementation issues
5G networks will change many industries, including manufacturing driving the future of Industry 4.0 and smart manufacturing. The smart factory is now tangible for many industry sectors. But the ability to cope with increased bandwidth, latency requirements, big-data generated from more connected equipment and the data processing required on the factory floor is a massive challenge for 5G implementation.
15/02/2021 - Unitemp adds Labcold Laboratory, Pharmacy & Blood Fridges & Freezers to its portfolio.
Unitemp, is pleased to announce that it has signed an agreement to distribute the impressive range of Labcold scientific and medical refrigeration, laboratory & pharmacy fridges & freezers and blood storage products.
20/01/2021 - ESPEC Announces Joint Venture to research Low-Global-Warming-Potential Alternative for ESPEC Environmental Test Chambers
The Engineering teams of ESPEC CORP. (Japan) and ESPEC NORTH AMERICA INC. (USA) today announced a joint venture into the research and investigation of low GWP refrigerant options to replace higher GWP refrigerants currently used in ESPEC cascade refrigeration systems.
20/01/2021 - Expansion Of AR Series Environmental Stress Chamber Lineup To Meet Rapid Temperature Change Needs for Automotive/Electronics Testing
Espec, leading global manufacturer of environmental test chambers, has launched four new models of their AR Series Environmental Stress Chambers for Rapid-Rate Temperature Cycling.
18/01/2021 - Unitemp launches new environmental test service and calibration offering
Unitemp, leading specialist environmental engineering company, has introduced a new tailored, comprehensive framework of preventative maintenance and support services solutions for environmental test cabinets. This new simple approach to services has been developed to help customers increase efficiency and profitability by ensuring equipment reliability, maximizing uptime through preventative maintenance and offering year-round telephone support and consultation.
24/01/2020 - Strategic Reorganisation of Unitemp Management Team
Unitemp, leading supplier of environmental test chambers and Espec’s UK distributor today announced a reorganisation within the company involving a number of leadership changes.
08/08/2019 - Storing up success for the future
It’s all about creating the right environment – for developing battery technology that is. At one pioneering project Unitemp has supplied Espec environmental chambers to ensure that testing of these new chemistries is safe and reliable.
08/08/2019 - Unitemp – Ramcare Joint venture PR
An environment for UKAS temperature and humidity chamber calibration
08/07/2011 - Unitemp double capacity of Temperature Test Chamber
Following in the footsteps of the LC500 is the newly launched LC1000 Temperature Test Chamber from Unitemp.
03/05/2011 - New range of eco-friendly Thermal Shock Chambers from Unitemp
Unitemp have introduced a new economic range of eco-friendly high quality thermal shock chambers, manufactured by Japan based ESPEC corporation.
11/02/2011 - New large capacity constant temperature / humidity chamber
Unitemp have launched a new constant temperature and humidity chamber which is described as affordable, eco-friendly chamber that caters for the diverse requirements of Industry, Laboratories and Research Facilities. Manufactured by the Japan based ESPEC corporation, this cabinet is designated the LHU-123.
23/11/2010 - Unitemp introduce Humidity Thermal Shock Chamber
The new high quality Humidity Thermal Shock Chamber launched by Japans' ESPEC Corporation is available from UK test chamber specialists Unitemp.
26/07/2010 - Unitemp introduce new low-cost bench-top Temperature Test Chamber
The new Temperature Test Chamber is designed in the UK and ideal for testing pharmaceuticals, electronics, automotive assemblies & components and other selected products.
26/05/2010 - Unitemp introduce Environmental Test Chambers for battery testing
The environmental test chamber specialists have introduced the new range of cost effective temperature and humidity chambers ideal for testing the reliability and performance of batteries.
26/03/2010 - New easy access temperature & humidity chambers
Unitemp announce the availability of a new affordable range of easy access Temperature and Humidity chambers, designed for the testing and monitoring of electronics, semiconductors, automotive components and selected products.
28/01/2010 - Unitemp introduce new range of Environmental Stress Chambers
Designated as the AR series, the range consists of 4 models that have been developed primarily for use with electronic and electrical components & equipment.
09/11/2009 - Unitemp launch new range of large walk in Test Chambers for Solar Panels
Umitemp have introduced a new range of cost effective large type temperature and humidity test chambers for PV modules and solar panels.
01/09/2009 - Unitemps' new low cost Temperature Chamber
Unitemp are now manufacturing a new low cost high quality temperature chamber, for the testing and monitoring of semiconductors, automotive products and selected pharmaceuticals.
05/01/2009 - Unitemp boost portfolio with new range of high quality Vacuum Ovens
Unitemp have introduced a new range of affordable compact vacuum ovens and dryers. This high quality range of chambers manufactured by ESPEC consists basically of three models which are designated the VAC -100 / 200/ 300 PR.

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