Micropilot M FMR67

Summary

Product Identification

• Product Name: Micropilot FMR67
• Type: Free space radar
• Document Number: TI01304F/00/EN/07.20
• Revision Date: 2020-09-25

Application

• Continuous, non-contact level measurement of bulk solids ranging from powdery to lumpy.
• Features a PTFE drip-off antenna or a PTFE-plated, flush-mounted antenna.

Operating Limits

• Maximum Measuring Range: 125 m (410 ft)
• Temperature Range: –40 to +200 °C (–40 to +392 °F)
• Pressure Range: –1 to +16 bar (–14.5 to +232 psi)
• Accuracy: ± 3 mm (0.12 in)

Input

• Measured Variable: Distance between reference point and product surface. Level calculated based on entered empty distance. Optionally convertible to volume or mass via linearization (32 value pairs).
• Measuring Range:
  • Drip-off, PTFE, 50 mm / 2" antenna: 50 m (164 ft)
  • PTFE flush mount, 80 mm / 3" antenna: 125 m (410 ft)
• Operating Frequency: Approx. 80 GHz
• Transmission Power:
  • Peak power: 6.3 mW
  • Average output power: 63 µW

Output

• Output Signal: HART (FSK ±0.5 mA over current signal, 1200 Bit/s, galvanically isolated)
• Switch Output (Optional): Open collector, binary switching, non-conductive failure mode. Electrical connection data: U = 16 to 35 VDC, I = 0 to 40 mA; Internal resistor: RI < 880 Ω.
• Signal on Alarm: Configurable failure modes (3.6 mA minimum, 22 mA maximum, or 3.59 to 22.5 mA). Displayed via current output, local display, or operating tool.
• Linearization: Allows conversion to any length or volume units; pre-programmed tables for cylindrical vessels, or custom tables of up to 32 value pairs.
• Galvanic Isolation: All output circuits are galvanically isolated.

HART Protocol Specific Data

• Manufacturer ID: 17 (0x11)
• Device Type ID: 0x112B
• HART Specification: 7.0
• HART Load: min. 250 Ω
• Supported functions: Burst mode, Additional transmitter status.
• Wireless HART Data: Minimum starting voltage 17.5 V, Start-up current 4 mA, Starting time 80 s.

Power Supply

• Supply Voltage:
  • 2-wire, 4-20 mA HART (Passive): 14 to 35 VDC (or 14 to 30 VDC for Ex ia/IS). Minimum supply voltage increases by 2 V if Bluetooth module is used.
  • 2-wire, 4-20 mA HART, switch output: 16 to 35 VDC (or 16 to 30 VDC for Ex ia/IS). Minimum supply voltage increases by 2 V if Bluetooth module is used.
  • 2-wire, 4-20 mA HART, 4-20 mA: 16 to 30 VDC. Minimum supply voltage increases by 2 V if Bluetooth module is used.
• Power Consumption:
  • A: 2-wire; 4-20mA HART: < 0.9 W
  • B: 2-wire; 4-20mA HART, switch output: < 0.9 W
  • C: 2-wire; 4-20mA HART, 4-20mA: < 2 x 0.7 W
• Current Consumption: Nominal 3.6 to 22 mA.
• Power Supply Failure: Configuration retained in HistoROM.
• Potential Equalization: No special measures required.

Mechanical / Hydraulic

• Dimensions: See official PDF for detailed dimensions.
• Weight: See official PDF for detailed weight.
• Materials: Varies by housing type (GT18 stainless steel, GT19 plastic, GT20 aluminum). Antenna and process connection materials are detailed in the document.
• Cable Entries: M20x1.5, ½" NPT, G ½", M12 plug / 7/8" plug (depending on approval and configuration).
• Cable Specification: Pluggable spring-force terminals (0.5 to 2.5 mm²) or screw terminals (0.2 to 2.5 mm²). Shielded cable recommended for HART protocol.

Performance Characteristics

• Reference Operating Conditions: Temperature +24 °C ±5 °C, Pressure 960 mbar abs. ±100 mbar, Humidity 60 % ±15 %.
• Reference Accuracy:
  • Digital: ±20 mm up to 1.5 m; ±3 mm > 1.5 m.
  • Analog: ±0.02 % of span.
• Non-repeatability: ≤ 1 mm (0.04 in).
• Measured Value Resolution:
  • Digital: 1 mm
  • Analog: 1 µA
• Response Time: Configurable; < 3.6 s when damping is switched off (Measuring rate ≥ 1.3 s⁻¹ at U ≥ 24 V).
• Influence of Ambient Temperature:
  • Digital (HART): average TC = 3 mm/10 K
  • Analog (current output):
    • Zero point (4 mA): average TC = 0.02 %/10 K
    • Span (20 mA): average TC = 0.05 %/10 K

Environment

• Ambient Temperature Range:
  • Measuring device: –40 to +80 °C (–40 to +176 °F)
  • Local display: –20 to +70 °C (–4 to +158 °F)
• Storage Temperature: –40 to +80 °C (–40 to +176 °F)
• Climate Class: DIN EN 60068-2-38 (test Z/AD)
• Altitude: Generally up to 2000 m (6600 ft) above MSL.
• Degree of Protection: IP68 (NEMA6P), IP66 (NEMA4X), IP20 (NEMA1), IP22 (NEMA2) depending on housing and configuration.
• Vibration Resistance: DIN EN 60068-2-64 / IEC 60068-2-64 at 5 to 2000 Hz: 1.5 (m/s²)²/Hz.
• Electromagnetic Compatibility (EMC): Complies with EN 61326 series and NAMUR Recommendation EMC (NE 21).

Process

• Process Temperature, Process Pressure: Ranges can be reduced by the choice of process connection. Consult EN 1092-1:2001 Tab. 18 for pressure values at higher temperatures.

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Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror