Appendix C: Measuring under Special Conditions
122
C76IB003EN-E
C.3
Measuring at High Pressures
The supplied silicone hose and injection adapters can only be used at
atmospheric pressure. Before applying high pressures, exchange the supplied
filling components with pressure-resistant components.
Adjustment with air and water
To reach the highest possible accuracy for high pressure measurements, perform
the air adjustment as usual at ambient pressure and the water adjustment or an
adjustment with any other reference liquid at the pressure at which you are going
to perform the measurements.
C.4
Measuring in Harsh Environments
•
Use the softkeys below the touch screen for operating the buttons in the
lower area of the screen.
•
Use a stylus or any convenient plastic stick with a soft and round ending to
operate the touch screen.
•
Use a PC mouse.
Protection foil
Your M series DMA is delivered with a transparent plastic protection foil covering
the touch screen. Three spare protection foils can be ordered (Mat. No. 81402).
If the touch screen has become dirty, you can exchange the used protection foil
against a new one.
To exchange the protection foil
1. Remove the used protection foil from the display using your finger nails.
WARNING
Leaky components of the measuring system can cause sample to be
splashed out when pressure is applied to the measuring system. Injuries and
risk of fire possible.
To avoid injuries, do the following:
•
At pressures higher than ambient pressure, only use the injection
adapters DMA/CarboQC (Mat. No. 19680) and polyurethane hoses 2.5 x
4 mm (Mat. No. 15272),
•
Before starting a measurement at high pressure, check the pressure
tightness of the system with air.
•
If you are measuring any aggressive, poisonous or flammable sample at
high pressure, only use the smallest possible sample amount.
