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TestEquity LLC, Environmental Chamber Division Environmental Chambers for Temperature and Humidity Testing
   TestEquity F4T Touch Screen Controller
  • 4.3 inch TFT Projected Capacitive (PCAP) color graphic touch screen
  • Free Composer Software for creating/archiving profiles and chamber configurations
  • Multiple levels of password security
  • Stores 40 profiles / 50 steps each, with battery backup and real time clock
  • Profile archiving and transfer via USB Flash Drive
  • Data Logging to USB Flash Drive
  • Includes Ethernet Modbus® TCP and RS-232 Modbus® RTU interfaces
  • F4 Compatibility mode for most frequently used commands, making it compatible with most existing software that was written for the original F4
  • Available for all new TestEquity environmental chambers (except TEC1)
  • Retrofit kit available for existing TestEquity environmental chambers
High resolution touch screen display on F4T Controller shows profile running on a TestEquity temperature/humidity chamber. Direct parameter entry on the F4T touch screen for ease of use
Easy entry and review of profile steps on the F4T touch screen display. Easy entry and review of profile step parameters on the F4T touch screen display.

The F4T is Watlow's next-generation process controller. Featuring a touch-screen interface, it's exceptionally easy and intuitive to use. The F4T is based on field-hardened electronics and robust algorithms already deployed in hundreds of thousands of installations worldwide. Watlow and TestEquity have worked closely together to refine this controller for use in TestEquity Environmental Chambers.

Why TestEquity chooses Watlow Controllers...
TestEquity has been using the original Watlow F4 controller since we began manufacturing environmental chambers in 1998. Prior to that, we relied on previous-generation Watlow controllers during the years that we sold reconditioned chambers. With their roots going back to 1922, Watlow has grown in product capability, market experience and global reach. The company holds more than 415 patents and employs 2,000 employees working in nine manufacturing facilities. TestEquity leverages Watlow's standard products because they offer the most reliable, field-proven, and fully supported designs.

F4T Features and Benefits

F4T Feature F4T Benefit
4.3 inch TFT Projected Capacitive (PCAP) color graphic touch screen Modern interface for quick entry and readout of parameters and functions
Direct alphanumeric parameter entry Quick and unambiguous entry of parameters for ease-of-use
Multiple levels of password security Prevent tampering of critical parameters and processes by unauthorized persons
Profile archiving and transfer via USB Flash Drive Quickly and easily transfer profiles to multiple chambers
Data Logging to USB Flash Drive Eliminate circular chart recorders which have limited usefulness, simplify your documentation process
F4 Compatibility Mode Use your existing software that was written for the original F4
SCPI Commands Easy programming of set points and readback of temperature/humidity conditions via Ethernet
Free Composer Software Easy creation and archiving of profiles and chamber configurations
NEMA 4 / IP65 Rated Front panel protects the controller against damage from dust and water intrusion

Profile archiving and transfer via USB Flash Drive

Profiles can be exported and imported as individual files via USB flash drive. This is useful for transferring profiles between different chambers and for archival purposes. The profile files contain all the profile steps that would ordinarily be entered via the front panel or Composer software. The complete F4T Configuration File (snapshot of controller configuration and all profiles) can also be easily exported and imported via USB flash drive.

Profile archiving and transfer via USB Flash DriveImport profiles and configurations via USB Flash Drive

Data Logging with transfer via USB Flash Drive

Data Logging can be enabled at any time and will log a fixed list of parameters to a .csv file. Log intervals from 0.1, 0.2, 0.5, 1, 2, 5, 10, 15, 30 seconds, 1, 2, 5, 10, 15, 30, 60 minutes can be selected. All datalog files are stored in internal memory until transferred to a USB flash drive.

Data Logging with transfer via USB Flash DriveF4T Log File

F4 Compatibility Mode

For the purpose of making an easy transition from the F4 to the F4T controller using Modbus, a special set of the most commonly used F4 registers were created. In the F4 Compatibility Mode, commands for Temperature/Humidity Set Point, Actual Chamber Temperature/Humidity, and Event Outputs are identical to the F4, so you can used your existing software on the new F4T.

SCPI Commands

The F4T accepts SCPI commands for reading the chamber temperature/humidity and reading/writing the temperature/humidity set point via Ethernet port 5025. The complete command set for all functions remain availible via Modbus.

The F4T allows you to easily create profiles...

F4T Touch Screen Display

Watlow Composer software for F4T Controller

...directly on the Touch-Screen Display, or on your PC and
upload them to the F4T Controller with Composer Software!

F4T Touch Screen Display

Watlow Composer™ Graphical Configuration PC Software

  • Speeds up and simplifies commissioning
  • Archives and documents controller setup
  • Connects with controller easily via Ethernet

F4T Retrofit Kit Available for Existing TestEquity Environmental Chambers

Add a modern controller to your existing TestEquity temperature chamber or temperature/humidity chamber. The F4T fits in the same cutout as the original F4 controller. Simply remove the original F4 controller, replace it with the new F4T controller, and attach the wires. You will need to drill holes to accommodate the added Ethernet and USB connectors if you want that additional functionality.

F4T Controller shown running a profile on a TestEquity Temperature/Humidity Chamber    Original F4 Controller for Environmental Chambers, Humidity Chambers, and Temperature Chambers
F4T Touch Screen Controller
Modern touch screen interface
and connectivity
Original F4 Controller
Developed in 1998

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