ROTRONIC Hygrogen2 - Manual (Page 48)

E-M-HG2-S-V2.1
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroGen2: Humidity and Temperature Generator
with AutoCal/AutoCal+, Remote Control and
Range Extensions options.
Instruction Manual
Instruction Manual for Software
Version 2.1
Document Type
Page 44 of 75
Document title
Figure 32: Humidity Map – standard and extended ranges
5.1.3 Above Ambient Temperature Operation
At high temperature and high relative humidity conditions, it is necessary to allow the unit to stabilise
to ensure minimal condensation. It is recommended that, for making measurements over 45°C and
80%rh, the HygroGen2 temperature be permitted to equilibrate for 20 minutes before high humidity is
introduced. It is also recommended that, under these conditions, the desired RH level is achieved in
incremental steps, allowing stabilisation at each step. If the unit is operated at high temperature and
high humidity for prolonged periods, it is strongly recommended that the chamber is thoroughly
dehumidified prior to switching the unit off.
5.1.4 Probe Insertion Depth
When adjusting or calibrating probes against a reference, make sure that the insertion depth of each
instrument is the same for each probe. Using the same immersion depth substantially reduces the effect
of any temperature and humidity gradients in the chamber.
The immersion depth of any probe inserted in the HygroGen2 should be within the limits of 100-150mm
(4-6”), measured from the inner side of the door. This will reduce the effect of room temperature via
stem conduction on the probe.
© 2014; Rotronic AG E-M-HG2-S-V2.1