Nanomass Gas Density
Technical data
Hauser
65
16
Technical data
16.1
Application
The measuring device is suitable for density and concentration measurement of gases only.
Depending on the version ordered, the measuring device can also measure potentially
explosive, flammable, poisonous and oxidizing media.
To ensure that the device remains in proper operating condition for its service life, use the
measuring device only for media against which the process-wetted materials are adequately
resistant (
69).
16.2
Function and system design
Measuring principle
Density and concentration measurement based on determining the frequency of a micro-
channel which is caused to oscillate at resonance frequency and which is part of a
micromechanical system (MEMS).
Measuring system
For information on the structure of the measuring device, see "Product description" (
16.3
Input
Measured variable
Direct measured variables
• Density
• Temperature (at density measurement)
• Pressure (at density measurement)
As the ambient temperature can influence the medium temperature in the micro-
channel, the measured temperature can deviate from the actual process temperature.
Derived measured variables
• Reference density according to the ideal gas law
• Average molar mass according to the ideal gas law
• Concentration according to user-configurable model in the case of binary gas mixtures
(optional)
Measuring range
Measuring range for gases
16.4
Output
Output signal
Current output
Range for full scale values
(density)
ρ
min
to
ρ
max
0 to 30 kg/m
3
(0 to 0.03 g/cm
3
, 0 to 0.03 SGU)
Current output
2× 4-20 mA (passive)
Maximum output values
23 mA
Load
0 to 700
Ω
