Our Story…
Why: Our passion is to make it easy for non-engineers to monitor, log, chart and alarm critical storage conditions.
How: We use the latest technology to simplify the user interface of sophisticated equipment monitoring temperature, humidity and pressure.
What: We design and build electronic instruments that monitor, log, chart and alarm storage and ambient variables that are easy to install and use.
Two Dimensional Instruments, LLC (2di) was founded by the current president and lead engineer, Rick Kaestner in 1999. Their first product was a freezer alarm with an intuitive user interface. The freezer alarm module used remote temperature sensors to monitor freezers and refrigerators. Additional sensors for relative humidity and pressure sensors were added as options soon after. Data logging was always a part of the design since a temperature history is so much more informative than a spot check. There were data loggers but they were designed for engineers and were far too complicated non-engineers. They also lacked the ability to provide real time information, send alarms, display graphical charts, and accommodate multiple sensor types.

TV1 Model
The ThermaViewer 1, our first product, was introduced in 2004. This unique instrument could be setup and operating in just a few minutes. It used remote wired or wireless sensors to sample, store and display temperature and humidity history on a large LCD display. All samples were stored in memory and displayed as a paperless chart. The current and historical conditions were always visible on the large screen.

TV2 Model
In 2013 we introduced the TV2 with Easy-Touch, which could also be setup and operating in a few minutes. It duplicated the functions of the ThermaViewer 1, and added a color touch-display, and the ability to use more and other types of sensors. The color display enabled a two stage alarm. If any value moved outside the safe zone it turned red. New differential pressure sensors were developed which made the TV2 ideal for monitoring, logging, alarming and charting environmental variables in pressurized rooms of all sorts: cleanrooms; positive pressure rooms; negative pressure rooms; nuclear medicine areas; pharmaceutical assembly rooms; etc…
Our Products
Our most popular product is the TV2. It is the only low cost monitor that logs, charts and alarms multiple environmental variables. It features a color touch screen with a QuickCheck display showing the current conditions for up to four remote sensors.
We also design and manufacture each of the sensors used with the TV2. Each sensor module has its own EEPROM memory to store calibration and other data. Each sensor transmits a digital signal back to the TV2 monitor to guarantee its accuracy.
Because of the digital interface sensors can be located remotely from the base station without having to worry about attenuation of the signal.
The TV2 monitor operates as a completely independent stand-alone device. It can interface with a PC on the customers Local Area Network so the logged data can be viewed anywhere and printed out as charts or Excel worksheet, but this connection is not strictly necessary. Since it is stand-alone all logged data is stored locally on the TV2 monitor in non-volatile RAM so there is never any loss of data. And because the data is encrypted it can not be changed ever. It can be viewed or printed out but not changed.
2di continues to develop next generation products that monitor, log, chart and alarm environmental variables.
Our Location
We are located near Louisville, KY, the 16th largest city in the US, where we have access to the latest in manufacturing facilities and some of the best engineering talent available anywhere, supplied by two major universities with outstanding engineering schools. In addition to being located in the lower Midwest, Louisville is also the major shipping hub for UPS, so we can easily and quickly ship to anywhere in the world.