Source container FQG66

Summary

Product identification

• Product Name: Source container FQG66
• Application: Designed for radiometric point level measurement, continuous level measurement, and density measurement.
• Function: Holds radioactive sources with shielding to direct radiation towards a detector. Features manual or pneumatic switch-on/switch-off.

Operating limits

Maximum Activity of Radiation Source

• ¹³⁷Cs: 740 GBq (20 Ci)
• ⁶⁰Co: 185 GBq (5 Ci)

Note: Maximum admissible activity may be further restricted by country-specific approvals.

Ambient and Storage Temperature

• Manual Operation (Order code 020, option A): –55 to +100 °C (–67 to +212 °F)
• Manual Operation + Proximity Switch (Order code 020, option B) / Pneumatic Drive + Proximity Switch (Order code 020, option L): –20 to +80 °C (–4 to +176 °F)

Vibration Resistance

• IEC 60068-2-64 test Fh; 10 to 2000 Hz; 1 (m/s²)²/Hz

Shock

• IEC-60068-2-27 test Ea (15 g; 11 ms; 3 shocks/direction/axis)

Degree of Protection

• Without terminal box for proximity switch (order code 020, option A): IP65/67, TYPE 4, TYPE 6P
• With terminal box for proximity switch (order code 020, option B, C): IP65/67, TYPE 4, TYPE 6

Fire Resistance

• +945 °C (+1733 °F) / 60 minutes Note: Specification can be restricted by country-specific approvals.

Pneumatic Version

• Compressed air connection: G1/8"
• Switching pressure:
  • EIN/ON: 5.5 to 7 bar (80 to 101 psi)
  • AUS/OFF: 0 bar (0 psi)
• Required compressed air quality: Class 5 as per ISO 8573-1, pressure dew point 10 K below operating temperature

Attenuation

In the direction of the beam

• Attenuation factor Fs:
  • For ⁶⁰Co: 1,270
  • For ¹³⁷Cs: 6,650
• Number of half-value layers:
  • For ⁶⁰Co: 10.3
  • For ¹³⁷Cs: 12.7

In the direction opposite to the beam (nameplate direction)

• Attenuation factor Fs:
  • For ⁶⁰Co: 4,096
  • For ¹³⁷Cs: 8,388,000
• Number of half-value layers:
  • For ⁶⁰Co: 12
  • For ¹³⁷Cs: 23

Note: These are typical values; production variations and tolerances are not included.

Electrical

• Proximity switches: VA
• Connecting cables of primary switches: PVC

Mechanical / Hydraulic

Design

• Manual Operation (Order code 020, option A): Lock pin secures switch position.
• Manual Operation + Proximity Switch (Order code 020, option B): Lock pin secures switch position, includes proximity switch.
• Pneumatic Drive + Proximity Switch (Order code 020, option L): Pneumatic drive with proximity switch. "EIN/ON" position is pressurized, "AUS/OFF" position is unpressurized.

Dimensions

• Manual version (order code 020, option A): See documentation for specific dimensions in mm (in).
• Manual version with proximity switch or Pneumatic version (order code 020, option B, L): See documentation for specific dimensions in mm (in).

Weight

• Max: 435 kg (959.18 lb)

Materials

• Housing: 316L (1.4404)
• Protective hose: VMQ
• Source holder rod and internal parts: 316L (1.4404)
• Pneumatic cylinder: Steel, high alloy, stainless / aluminum, anodized / NBR / polyurethane (PUR)
• Extension spring: 301 (1.4310)
• Terminal box: PVC
• Padlock: Lock body: brass, Internal part: corrosion-free
• Seals: FVMQ
• Screws and nuts: A4
• Compressed air connection G1/8": Swivel connector: Al, Seal: NBR, Banjo bolt: nickel-plated brass, Internal parts: brass
• Proximity switches: VA
• Connecting cables of primary switches: PVC

Note: This device contains more than 0.1% lead with CAS no. 7439-92-1.

Safety Equipment

• Lock pin to secure switch position "EIN/ON" or "AUS/OFF".
• Lockable cover provides protection from theft.

Installation

Orientation

• Level Measurement: Mount at or slightly above maximum level, aligned with the detector. Minimize distance to the product vessel.
• Point Level Detection: Mount at the same height as the detector. Minimize distance to the vessel wall.
• Density Measurement:
  • Vertical pipes: Preferably mount detector with terminal head at the top, measure with forward flow (bottom to top).
  • Horizontal pipes: Advisable to mount FQG66 above the pipe. Lateral installation is permitted only in low-vibration applications.

Mounting Screw Tightening Torque

• Screw diameter: M20 or G1/2
• Material: Stainless steel, Min. tensile strength: 700 N/mm²
• Friction coefficient (µ): 0.14
• Torque: 32 Nm (23.6 lbf ft)

Hazardous Area

• Suitability for hazardous areas must be checked by the plant operator according to national regulations.
• Avoid electrostatic charge, friction sparks, and impact sparks.
• Integrate the device into the plant potential equalization system.
• CAUTION: Source containers with a proximity switch or pneumatic drive are NOT suitable for hazardous areas.

Documentation

• Brief Operating Instructions (KA): For quick setup to the first measured value.
• Operating Instructions (BA): Comprehensive guide for all lifecycle phases.
• Safety Instructions (XA): Integral part of Operating Instructions, relevant instructions indicated on the nameplate.

Ordering Information

• Detailed information available via Endress+Hauser sales organization or Product Configurator online.
• Scope of Delivery: Source container FQG66, radiation source (installed), radiation symbol, documentation.
• Delivery: Requires handling/import permit. Radioactive sources can only be delivered installed in the source container for international shipments. Delivered in "AUS/OFF" position secured by padlock. Transportation complies with ADR and DGR/IATA regulations.

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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