Micropilot FMR60
Endress+Hauser V. 4, Rev. 2, 19-03-2018 9
Input
Measured variable
The measured variable is the distance between the reference point and the product surface. The level
is calculated based on "E", the empty distance entered. Optionally, the level can be converted to other
variables (volume, mass) by linearization (32 value pairs).
Measuring range Maximum measuring range
Device Antenna
1)
Maximum measuring range
FMR60 GA:
Drip-off, PTFE 50 mm / 2"
50 m (164 ft)
1) Feature 070 in the product structure
Usable measuring range
The usable measuring range depends on the antenna size, the medium's reflective properties, the
installation position and any possible interference reflections.
The following tables describe the groups of media as well as the achievable measuring range as a
function of application and media group. If the dielectric constant of a medium is unknown, it is
recommended to assume media group B to ensure a reliable measurement.
Media groups
Media group DC (ε
r
) Example
A0 1.2 to 1.4 Butane, liquid nitrogen, liquefied hydrogen
A 1.4 to 1.9 non-conducting liquids, e.g. liquefied gas
1)
B 1.9 to 4 non-conducting liquids, e.g. benzene, oil, toluene, …
C 4 to 10 e.g. concentrated acids, organic solvents, esters, aniline, alcohol, acetone, …
D > 10 conducting liquids, e.g. aqueous solutions, dilute acids and alkalis
1) NH
3
falls into medium group A.
For dielectric constants (DC values) of many media commonly used in various industries refer
to:
• the Endress+Hauser DC manual (CP01076F)
• the Endress+Hauser "DC Values App" (available for Android and iOS)
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