RIA15 Product description
Endress+Hauser 11
Input
The reflected radar impulses are received by the antenna and transmitted into the
electronics. A microprocessor evaluates the signal and identifies the level echo caused by
the reflection of the radar impulse at the product surface. This clear signal detection
system benefits from over 30 years' experience with time-of-flight procedures.
The distance D to the product surface is proportional to the time of flight t of the impulse:
D = c · t/2,
where c is the speed of light.
Based on the known empty distance E, the level L is calculated:
L = E – D
Output
The Micropilot is adjusted by entering the empty distance E (= zero point) and the
full distance F (= span).
• Current output: 4 to 20 mA
• Digital output (HART, SmartBlue): 0 to 10 m (0 to 33 ft) or 0 to 20 m (0 to 66 ft)
depending on antenna version
The RIA15 can be used as a local display unit and for the basic configuration of the
Micropilot FMR20 radar level sensor via HART®.
A0030964
2 Remote operation of the FMR20 via the RIA15
1 PLC
2 Transmitter power supply, e.g. RN221N (with communication resistance)
3 Connection for Commubox FXA195 and Field Communicator 375, 475
4 RIA15 loop-powered process display unit
5 Transmitter
For this, the RIA15 can either be ordered together with the FMR20 via the FMR20 product
structure, or the RIA15 must be ordered separately with option 3 "4 to 20 mA current
signal + HART + FMR20 basic configuration" in feature 030 "Input".
FMR20 product structure, feature 620 "Accessory enclosed":
• Option R4: "Remote display RIA15, non-hazardous"
• Option R5: "Remote display RIA15, hazardous"
RIA15 product structure, feature 030 "Input":
Option 3: "4 to 20 mA current signal + HART + FMR20 basic setting"
The following parameters can then be configured at the FMR20 via the 3 operating keys
on the front of the RIA15:
• Unit
• Empty and full calibration
• Mapping area if the measured distance does not match the actual distance
Further information on the operating parameters → 39
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