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Radiometric Level/density measurement Source Container FQG61

Radiation source container with source holder for manual or pneumatic switch-on/switch-off

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Radiometric Level/density measurement Source Container FQG61

Radiation source container with source holder for manual or pneumatic switch-on/switch-off

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Benefits

  • High safety level thanks to highest classification for the source supplied (DIN 25426/ISO 2919, typically classification C66646) and safe and easy source replacement
  • Reliable measurement due to lightweight container and almost spherical design which provides optimized screening
  • Compact, easy-to-mount device with the possibility of various angles of emission for optimum adaptation to the application
  • Manual or pneumatic switching on/off and padlock, cylinder lock or locking bolt for fixing the switching position
  • Switch status easily identified
FLEXible answers to individual needs
Current product

Radiometric Level/density measurement Source Container FQG61

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  • Specialized products
  • Designed for demanding applications

What is FLEX?

FLEX selections
Technical excellence
Simplicity
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Fundamental selection Meet your basic measurement needs
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Lean selection Handle your core processes easily
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Extended selection Optimize your processes with innovative technologies
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Xpert selection Master your most challenging applications
Variable
Manufacturer's warranty

Engineered for confidence

Our instruments are designed for long‑lasting performance, precise measurement, and dependable operation in demanding industrial environments. Each product includes a standard manufacturer’s warranty that reflects our commitment to quality and to the trust you place in our solutions.

Should a warranty case occur, the device will be assessed and the applicable remedy will be provided in line with the warranty terms – helping ensure a reliable and efficient resolution and supporting continued operation of your measurement point.

Request for extended warranty

If you require extended warranty coverage, simply contact your local Endress+Hauser representative. Our experts will advise you on the available options to match your application and risk profile, helping you protect your investment, reduce unexpected repair costs, and ensure reliable long‑term operation beyond the manufacturer's warranty period.

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Warranty terms apply

The manufacturer's warranty and extended warranty are subject to specific conditions. For full details, please refer to the locally applicable General Terms and Conditions (GTC), which can be found on the respective country page of our website.

Services by your side

Right‑first‑time commissioning, worldwide

Endress+Hauser’s qualified service engineers ensure your measurement devices are commissioned right the first time, delivering application‑aligned accuracy, regulatory compliance, and operational confidence from startup onwards, anywhere in the world.

Remote support you can trust wherever you operate

With Endress+Hauser Smart Support, you benefit from faster issue resolution, higher uptime, reliable global expertise across the entire product lifecycle – and lasting peace of mind.

Committed to long‑term, sustainable performance

With deep field expertise, harmonized processes, and continuous monitoring, we accompany you with comprehensive service offerings – from initial start‑up through instrumentation maintenance to process optimization – as a true lifetime partner delivering improved outcomes.

For additional information, please contact your local Endress+Hauser representative.

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Personalized transaction space

Check prices and delivery times, save your favorite products, create quotes and place orders in just a few clicks and track deliveries at any time. With access to your complete order and quote history including all relevant documents you benefit from full transparency throughout the entire process.

Easy access to technical documentation

Select and download all technical documentation such as operating manuals, calibration certificates, approvals and CAD drawings conveniently bundled as a complete documentation package for your entire order or quote.

My Endress+Hauser – all in one place

My Endress+Hauser is your 24/7 connection to Endress+Hauser – in the office, in the field or on the go. It brings together transaction management, documentation and software downloads, knowledge base access, customer support, engineering tools and cloud‑based IIoT services helping you work easier, faster and more efficiently.

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Product information

Source Container FQG61 - Radiometric measurement
Radiometric - Source Container FQG61
Specifications
Continuous / Liquids
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Description

The FQG61 source container is designed to hold the radioactive source during radiometric point level detection, continuous level and density measurement. The radiation is emitted almost unattenuated in one direction only, and is damped in all other directions. This guarantees highest safety for the personnel and a reliable measurement.

Field of application

Designed to hold the radioactive source during radiometric point level detection, continuous level measurement and density measurement. Radiation is emitted almost unattenuated in one direction only and is damped in all other directions.

  • Activity: 137Cs to 18.5GBq (500mCi), 60Co to 0.74GBq (20mCi)
  • Temperature: No limitation (non-invasive, extraneous)
  • Pressure: No limitation (non-invasive, extraneous)
Benefits
  • High safety level thanks to highest classification for the source supplied (DIN 25426/ISO 2919, typically classification C66646) and safe and easy source replacement
  • Reliable measurement due to lightweight container and almost spherical design which provides optimized screening
  • Compact, easy-to-mount device with the possibility of various angles of emission for optimum adaptation to the application
  • Manual or pneumatic switching on/off and padlock, cylinder lock or locking bolt for fixing the switching position
  • Switch status easily identified
Predecessors
Source container QG020
Downloads
Most downloaded
Technical Information (TI)
Source container FQG61, FQG62 Technical Information Technical Information
English version - 10/2019
Download
Operating Instruction (BA)
BA Source container FQG61, FQG62 Radiometric level and density measurement
English version - 10/2025
Download
Technical Information (TI)
Information technique / Mise en service Conteneur de source radioactive FQG61/FQG62 Mesure par radioisotopes
Conteneur avec support de source pour mise ON/OFF
manuelle du rayonnement
French version - 01/2011
Download
The CAD Drawings will be available after the configuration.
All downloads
40 Downloads
Technical Information (TI)
Most downloaded
Source container FQG61, FQG62 Technical Information Technical Information
English version - 10/2019
Download
Technical Information (TI)
Information technique / Mise en service Conteneur de source radioactive FQG61/FQG62 Mesure par radioisotopes
Conteneur avec support de source pour mise ON/OFF
manuelle du rayonnement
French version - 01/2011
Download
Operating Instruction (BA)
Most downloaded
BA Source container FQG61, FQG62 Radiometric level and density measurement
English version - 10/2025
Download
Installation Instructions (EA)
Proximity switch Installation Instruction Source container FQG61, FQG62, FQG66
English version - 11/2015
Download
Installation Instructions (EA)
EA Locking bolt Source Container FQG61, FQG62
English version - 02/2026
Download
Installation Instructions (EA)
Sealing set for Source container Installation instruction Source container FQG61, FQG62
English version - 04/2012
Download
Installation Instructions (EA)
Terminal box Source container FQG61, FQG62, FQG66
English version - 11/2021
Download
Installation Instructions (EA)
EA Pneumatic drive Source container FGQ61, FQG62
English version - 07/2026
Download
Installation Instructions (EA)
Sealing kit for Source container Installation instruction Source container FQG6x-#A, FQG6x-#B, FQG6x-#C
English version - 04/2012
Download
Installation Instructions (EA)
Sealing kit for Source container Installation instruction Source container FQG6x-#D
English version - 04/2012
Download
Ex Safety Instruction (XA)
Safety Instructions Radiation Source Container FQG61, FQG62 II 2 G c IIB T4 X
EG 09 013
English version - 02/2016
Download
Ex Safety Instruction (XA)
Radiation Source Container FQG61, FQG62 II Gb c IIB T4 X
English version - 08/2021
Download
Ex Safety Instruction (XA)
Radiation Source Container FQG61, FQG62 II 2 G Ex h IIB T4 Gb
English version - 02/2021
Download
ZE (Certificate)
RFID TAG Certificate/Declaration of Conformity ATEX:
II 2 G Ex ia IIC T6 Gb
II 2 D Ex ia IIIC T80°C Db;
IECEx:
Ex ia IIC T6 Gb
Ex ia IIIC T80°C Db
IECEx EPS 15.0042X; EPS 15 ATEX 1 1011 X
English version - 02/2019
Download
Special Documentation (SD)
Special Documentation Source Container FQG61, FQG62 Radiometric Level Measurement U.S. General and Specific Licensees
Radiation Safety and Technical Reference Manual
English version - 02/2016
Download
Special Documentation (SD)
RFID TAG Special Documentation RFID TAG
Special Documentation
English version - 08/2015
Download
Special Documentation (SD)
SD Transportation cask for shipping radioactive sources Radiometric level measurement
English version - 03/2024
Download
Special Documentation (SD)
SD Tagging Level and pressure measuring instruments
English version - 04/2024
Download
Special Documentation (SD)
SD QGx, FQGx, FSG6x Returning: Source containers, radiation sources
English version - 02/2025
Download
Special Documentation (SD)
QG020, QG100, FQG60, FQG61, FQG62, FQG63, FQG66, QG2000, Mulitplex 9S, TSP Source container Typ A Verpackungen
Type A Package
English version - 04/2020
Download
Special Documentation (SD)
Source container FQG60, FQG61, FQG62, FQG63, FQG66 Instructions for loading and changing the source Label set Special Documentation Radiometric level measurement
English version - 10/2016
Download
Special Documentation (SD)
SD Source Container FQG60, FQG61/62, FQG63, FQG66, FQG74 Supplementary safety instructions for radiation sources and source containers approved for use in Canada
English version - 01/2026
Download
Fields of Activities (FA)
Misura di livello Misura di livello
Panoramica dei prodotti per
applicazioni in liquidi e solidi sfusi
Italian version - 06/2026
Download
Fields of Activities (FA)
Catálogo Medición y Detección de nivel Gama de productos para aplicaciones con líquidos y sólidos
Spanish version - 06/2022
Download

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Change version
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Selection of compatible products

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Spare parts and accessories

Cover
Cover

Hood FQG61/FQG62, chain, Steel

Cover
Cover
Order code 71099266
Drawing number 20
Cover
Cover

Hood FQG61/FQG62, chain, SS

Cover
Cover
Order code 71099267
Drawing number 20
Housing/housing accessories
Housing/housing accessories

Padlock FQG6x

Housing/housing accessories
Housing/housing accessories
Order code 71301302
Drawing number 22
Sensoric
Sensoric

Key > lock QG020/QG100, FQG6x, 2 pcs.

Sensoric
Sensoric
Order code 52018920
Drawing number 50
Spare parts & accessories
Source Container FQG61 - Radiometric measurement
Radiometric - Source Container FQG61

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Source Container FQG61 - Radiometric measurement
Radiometric - Source Container FQG61
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Spare parts and accessories

Cover
Cover

Hood FQG61/FQG62, chain, Steel

Cover
Cover
Order code 71099266
Drawing number 20
Cover
Cover

Hood FQG61/FQG62, chain, SS

Cover
Cover
Order code 71099267
Drawing number 20
Housing/housing accessories
Housing/housing accessories

Padlock FQG6x

Housing/housing accessories
Housing/housing accessories
Order code 71301302
Drawing number 22
Sensoric
Sensoric

Key > lock QG020/QG100, FQG6x, 2 pcs.

Sensoric
Sensoric
Order code 52018920
Drawing number 50
Spare parts & accessories

Selection of compatible products

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