Endress and Hauser GmbH and Co FMR6XET ユーザーズマニュアル

Micropilot FMR62

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

Maximum measuring range

FMR62

GE:
integrated, PEEK, 20 mm / 3/4"

10 m (32.8 ft)

GF:
integrated PEEK, 40 mm / 1-1/2"

22 m (72 ft)

GM:
PTFE cladded flush mount 50 mm / 2"

50 m (164 ft)

GN:
PTFE cladded flush mount 80 mm / 3"

80 m (262 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 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

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)