Section 4
4-24
Calibration
example, if the span RH is actually 80%, set the span to 81%, and
repeat steps 1 through 4.
Calibrating the LI-6200 or LI-6000 Portable Photosynthesis
System Humidity Sensor
Precalibration
☞
1.
Set the LI-610 dew point to 0.05 °C.
2.
Mount the LI-6200 or LI-6000 sensor housing in a vise, if possible.
Unhook the leaf temperature thermocouple from the monofilament
support lines, and then remove the chamber from the sensor housing.
BE VERY CAREFUL NOT TO TOUCH, SCRATCH, OR SMOKE
NEAR THE EXPOSED HUMIDITY SENSOR.
3.
Check to be sure that the sensors and the exposed parts of the sensor
housing are clean and free of debris.
4.
Attach the nickel-plated aluminum block (included in the 610-02 RH
Calibration Accessory Kit) to the sensor housing (Figure 4-6) and
tighten it down. Allow the leaf temperature thermocouple to hang
free outside the aluminum block. The sensor head O-ring will seal
around the thermocouple wires sufficiently well to prevent serious
leaks.
