5128A
Operators Manual
20
Turn the Product Off
Push the power switch on the rear panel to the “0” position to turn off the
Product.
If the chamber dew point is greater than the ambient temperature, to avoid
condensation, do not open the chamber door for 1 hour so that the chamber
comes to room temperature.
Do not turn off the Product when its actual humidity is >80 %. Doing so risks the
chance that condensation will form inside the chamber. When possible, turn the
Product to a lower humidity before it is powered off.
Mixing Insert
The mixing insert improves the temperature and humidity uniformity of the
Product. It contains the working area that has guaranteed performance. The
mixing insert can be removed to calibrate larger UUTs. In this case, an external
reference probe should be used to monitor actual temperature and humidity
conditions. Slide the mixing insert out of the chamber to remove it. To reinstall,
align the posts on the mixing insert against the chamber walls, and gently slide it
back into the rear of the chamber. One of the three tabs on the outer part of the
insert must be in the 6 o'clock position as shown in Table 5. This position
ensures the best temperature and humidity uniformity within the working area.
To check for water condensation, remove the mixing insert from the chamber and
then reinstall it.
Initial Warmup Period
The Product is a fast-response system able to change temperature as quickly as
10
°
C per minute and 10 % RH per minute. However, the Product can have a
slower initial response after exposure to cold temperatures when transported or
long periods of being off. When cold, and upon initial power up, the Product
heats up the internal humidifier and creates necessary water vapor. When
sufficient water vapor is generated,
is removed from the main screen,
and the Product is ready for use.
Set Temperature and Humidity
To change the set point for temperature:
1. Push
NEXT
until the Temp number on the display blinks.
2. Push
up
or
down
to move the set point up or down. Hold
up
or
down
down
to quickly change the set point.
3. To change the set point for humidity, push
NEXT
until the RH number blinks.
Push
up
or
down
to increment the set point up or down. Hold
up
or
down
down for a faster change in set point.
