Apogee Oxygen Sensors
Figure 1: Diffusion Head in use
We sell two types of oxygen sensors: soil and fast response. The soil sensor is designed for direct burial and includes a diffusion head, which has a screen that allows the sensor to…
Weather Mapping
Last Wednesday the USDA released a new Plant Hardiness Zone Map. There were several significant changes in this update from the previous map that was released in 1990. The change that has garnered the most media attention is a general shift in many…
How to take IRR Temperature Measurements without a Datalogger
Customers occasionally ask us if it is possible to use our infrared radiometer (IRR) sensors without a programmable datalogger. This is difficult, but not impossible. This blog describes the requirements.
For starters, a voltmeter with mic…
Need a Custom Solution?
Recently, we were approached by a prospective customer inquiring about making reflective measurements of a standard Macbeth ColorChecker 24 chart. After working out the details, the customer would supply the chart and Apogee would supply the 24 refle…
Extreme Weather Conditions
I thrive in harsh weather conditions, especially extreme cold. One year at the end of June, I did some work in Houston. It was 38 C (~100 F) and felt like 100 %RH outside but in the confined environment where I was working it was about 49 C (~120 F)…