Gas Incubation System
To ensure accurate humidity measurements , the humidity sensor must be mounted securely in the
plastic through-hole in the side of the Heated Lid. To do this, please follow the steps below:
1. Check that the spacer nut is fixed on the humidity sensor’s threaded connector.
2. Place the threaded part of the sensor through the opening in the Heated Lid’s wall, so that the
sensor is inside the chamber (Figure
). The spacer nut fits into the cavity of the wall.
3. Screw the counter nut from the outside onto the thread and tighten it snugly against the outer
wall of the Heated Lid using the wrench provided with the Gas Mixer. The flat cut-away on
the counter nut should be facing away from the lid, allowing the wrench to fit properly over
the nut. Be careful not to over tighten the nut.
Counter nut
Through-hole
Polymer block with
humidity sensor
Spacer nut
Figure 7 – Installation of the humidity sensor in the side wall of the Heated Lid.
Caution!
Make sure that the polymer block is not in contact with the Heated Lid. Heat transfer from the
Heated Lid to the sensor can lead to low relative humidity readings, which in turn can lead to
condensation in the chamber.
The connection of the humidity sensor with the Gas Mixer is shown in Section
Version 2.2 (May 15, 2019)
20
Instruction Manual
