Process Control Instruments, Field Devices and Industrial Automation
ENDRESS+HAUSER FTG20-AA14A1AA (1)
  • Overview
  • Benefits
  • Specs
  • Documents

EH Gammapilot FTG20 Radiometric Geiger-Mueller counter for non-contact point level detection with separate transmitter. Highest sensitivity. DPDT Relay. 4-20mA HART communication. ATEX, CSA and IECEx Approvals.

Part# with Options:        FTG20-AA14A1AA
Price with Options:        Please Email us your request for quote   

Options:    

Approval
(1) Approval for EH FTG20
Sensivity
(2) Sensivity for EH FTG20
Electronics & Output
(3) Electronics & Output for EH FTG20
Housing Transmitter
(4) Housing Transmitter for EH FTG20
Electrical Connection
(5) Electrical Connection for EH FTG20
Housing Sensor
(6) Housing Sensor for EH FTG20
Cable & Plug
(7) Cable & Plug for EH FTG20

  Availability 2 Weeks  ]

Application
  • Non-invasive point level measurement for liquids, solids, suspensions and sludges etc.
  • Used under extreme measuring conditions, e.g. high pressure, high temperature, corrosiveness, toxicity, abrasion.
  • All kinds of process vessels, e.g. reactors, autoclaves, separators, acid tanks, mixers, cyclones, cupola furnaces.
Your Benefits
  • Sensor and transmitter: One instrument for all measuring tasks
  • Highest availability, reliability and safety, even for extreme process and ambient conditions
  • Optimum adjustment to the respective application and measuring range via a variety of sensitivity versions:
  • Relay, 8/16 mA (passive) or 4 to 20 mA output for easy system integration
  • Aluminium or stainless steel housing for heavy-duty applications
  • Easy commissioning and fast, on-site operation
  • Can be used universally due to numerous certificates and approvals
  • Short response time
  • No recalibration required following replacement of electronics
  • Electronics self-monitoring
Measuring principle

Radiometric point level detection is based on the fact that gamma radiation is attenuated when it penetrates a material. As a general rule, the attenuation is a function of the following parameters: Density r and thickness d of the material as well as a substance-specific, linear attenuation coefficient μ which depends on the type of radiation source.

The attenuation is defined by the following formula: Fs = e -μrd

A gamma radiation source and a Gammapilot FTG20 are mounted on opposite sides of the vessel at the height of the desired level limit.

"μ" and "d" remain constant for point level detection and the radiation intensity only depends on the medium being present:

  • The count rate at the FTG20 reaches a maximum if the radiation path in the vessel is free (no medium in the radiation path).
  • The count rate at the FTG20 reaches a minimum if the radiation path in the vessel is covered with medium and the radiation is attenuated as a result.

The min. and max. count rates, N min , N max , are determined when the transmitter is commissioned and are calibrated, whereby the following formula defines the relationship between them: N min = N max e -μrd

The switching points are defined automatically following calibration.

Measuring Principle Radiometric Limit
Characteristic / Application Radiometric Transmitter with 1 to 3 Geiger-Müller counters for contactless measurement in liquids, sludge or suspensions under exteme process conditions
Specialities Calculation and sizing with Applicator
Supply / Communication Relay DPDT:
19...253VAC, 19...55VDC
8/16mA:
11...36VDC, 11..30VDC (Exia)
Ambient temperature Relay DPDT:
19...253VAC, 19...55VDC
8/16mA:
11...36VDC, 11..30VDC (Exia)
Process temperature Any
Process pressure absolute / max. overpressure limit Any
Min. density of medium Any
Min. conductivity of medium Any
Main wetted parts Non-contact
Process connection Non-contact
Process connection hygienic Non-contact
Sensor length 140 mm (5.5")
Communication Relay DPDT
8/16mA
4...20mA
Certificates / Approvals ATEX, CSA, CSA C/US, IEC Ex, NEPSI
Options Sensitivity:
1x Geiger- counter: 1-8uSv/h,
2x Geiger- counter: 0,5-4uSv/h
3x Geiger- counter: 0,3-2,7uSv/h

Cooling jacket
Transmitter with compartment for conduit
Components Isotope: FSG60, FSG61
Source container: FQG60, FQG61, FQG62, FQG63, QG2000


B2B Checkout Options: Designated Carrier and Tax-Exempt purchase
Payment Options: Credit Card, Credit Card Over the Phone, PAYPAL, Wire Transfer, Check and Money Order

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