Technical data
Micropilot S FMR533 4 to 20 mA HART
80
Hauser
10.1.5
Performance characteristics
Note!
Performance characteristics for devices that can be calibrated in compliance with OIML R85.
Reference operating
conditions
According to OIML R85:
• Temperature = -25 °C... +55 °C (-13…+131 °F)
• Atmospheric pressure
• Relative humidity (air) = 65 % ±15%
• Medium properties: e.g. medium with good reflectivity and calm surface.
• Tank diameter: signal beam hits the tank wall only at one side.
• No major interference reflections inside the signal beam.
Maximum measured error
Absolute accuracy: better than ±1 mm
!
Note!
Free space Micropilot S radar gauges typically provide accuracy of ±0.5 mm (2 sigma value).
Depending on the respecitve national gauging regulations, the admissible errors
after
installation of
the device on the tank are ±4 mm (OIML, API)....
Non-repeatability
0.3 mm (1/64")
Hysteresis
0.3 mm (1/64")
Long-term drift
The long-term drift is within the specified accuracy.
Influence of ambiente
temperature
Within the specified accuracy according to OIML R85
Proof of accuracy of custody
transfer versions
The accuracy of each Micropilot S is established through a calibration certificate that records the
absolute and relative error at 10 points during the final test. A Laser Interferometer (Jenaer
Messtechnik ZLM 500) with an absolute accuracy of 0.1 mm is used as a reference for the free space
measurements with FMR530/533. For stilling well measurements with FMR532, a NMI / PTB
calibrated tape with an absolute accuracy of 0.25 mm is used. Each Micropilot S is delivered with
the PTB and NMi type approval. Additional initial factory verifications for custody applications are
available on demand for radar device Micropilot S.
Maximum fill speed
By the first pass trough of measuring range: 100 mm/min., thereafter unlimited.
Reaction time
The reaction time depends on the parameter settings (min. 1 s). In case of fast level changes, the
device needs the reaction time to indicate the new value.
Resolution
• digital: 0.1 mm
• analog: 0.03 % of measuring range
Settling time
Typical 15 sec.
