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Gammapilot M FMG60 - 48 Pages

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Gammapilot M FMG60

Catalog excerpts

TI00363F/00/EN/14.12 71207244 Products Solutions Services Technical Information Gammapilot M FMG60 Radiometric Measurement Compact transmitter for non-contact level, point level and density detection Application • Continuous, non-contact measurement in liquids, solids, suspensions or sludges etc. • Applications 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 • Applications in food processing industry without additional requirements or approvals • System integration via HART, PROFIBUS PA and FOUNDATION Fieldbus • Use in safety functions for max. point level detection and min. point level detection Your benefits • Compact transmitter: one instrument for all measuring tasks • Highest availability, reliability and safety, even for extreme process and ambient conditions • Highest sensitivity and accuracy at lowest dose rates (ALARA principle) • Optimum adjustment to the respective application via a variety of detectors: – point detector – rod detectors of different lengths • Ex d, Ex e or Ex i current output for simple plant integration • Stainless steel housing 316L for heavy-duty applications • SIL2/3 approval in accordance with IEC 61508 for max. point level detection and min. point level detection • WHG approval • Temperature compensation for density measurements • Gammagraphy detection • Easy menu-guided onsite operation via four-line plain text display • Easy commissioning, documentation and maintenance/diagnosis with the operating program FieldCare

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Gammapilot M FMG60 Table of Contents Document information . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Function and system design . . . . . . . . . . . . . . . . . . . . . .4 Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Signal evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 System Integration . . . . ....

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Document information Symbols Safety symbols Electrical symbols Symbols for certain types of information

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Function and system design Measuring principle The radiometric measuring principle is based on the fact that gamma radiation is attenuated when it penetrates a material. Radiometric measurement can be applied for different measuring tasks: 1 Point level detection 5 Volume flow meter 2 Continuous level measurement 6 Temperature sensor 3 GammapilotM 7 Density or concentration measurement Point level detection A gamma radiation source and a Gammapilot M are mounted on opposite sides of the vessel at the height of the desired level limit. The Gammapilot M converts the received radiation...

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Gammapilot M FMG60 Measuring system A radiometric measuring system typically consists of the following components: Gamma Radiation Source A 137Cs or 60Co isotope is used as the gamma radiation source. Gamma radiation sources with different activities are available to adapt the system to the application in question. The "Applicator"1) program can be used to calculate the required activity. For further information on gamma radiation sources refer to TI00439F/00/EN. Source Container The radiation source is enclosed in a source container, which allows the radiation to be emitted only in one...

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Gammapilot M FMG60 Gamma Modulator FHG65 (option) In a radiometric measuring point with Gammapilot FMG60, the Gamma Modulator FHG65 is mounted in front of the radiation exit channel of the source container. It contains a shaft slotted along the longitudinal axis. This shaft rotates continuously and alternately screens off the gamma beam at a frequency of 1 Hz or allows it through. Due to this frequency, the useful beam differs from fluctuating ambient interference radiation and from interference radiation occurring sporadically (e.g. from nondestructive material testing). Using a frequency...

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Signal evaluation Level measurement A standard linearization table for the calculation of the level in vertical cylinders is preprogrammed in the Gammapilot M. For other situations a linearization table consisting of up to 32 points can be entered manually or half-automatically (by filling the vessel under controlled conditions). The linearization curve with its associated table can be calculated by the selection and configuration C, D Linearization table entered by the user IN Pulse rate (counts per second, c/s) 2) The "Applicator" CD-ROM is available from your Endress+Hauser sales...

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Gammapilot M FMG60 Wiring example for point level detection 200/400 mm The output signal is linear between the free and covered calibration (e.g. 4 to 20 mA) and can be evaluated in the control system. If a relay output is needed, the following Endress+Hauser process transmitters can be used: • RTA421: for non-Ex applications, without WHG, without SIL • RMA42: for Ex-applications; with WHG and SIL certificates A 1 2 + - . 3 16 11 + - B 1 2 + - 4 . C 1 + X8 X4 2 + - - D . 5 A0018092 A B C D Wiring with RTA421 switching unit Wiring with process control system Wiring with RMA42 switching unit...

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Gammapilot M FMG60 Density measurement The measured values of up to nine samples of known density can be stored in the Gammapilot M and used for the calibration of density measurements. From these calibration points, the Gammapilot M calculates the absorption coefficient and the linearization curve automatically. These parameters are necessary to calculate the density from the pulse rate. In the case of a one point calibration a default value is used for the absorption coefficient (which can be changed manually). A IN D r B IN Fs = e - mrD r A0018248 A B D IN One point calibration Multiple...

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