ES466936A3 - Improvements made to a chemical dosimeter for individual use. - Google Patents

Improvements made to a chemical dosimeter for individual use.

Info

Publication number
ES466936A3
ES466936A3 ES466936A ES466936A ES466936A3 ES 466936 A3 ES466936 A3 ES 466936A3 ES 466936 A ES466936 A ES 466936A ES 466936 A ES466936 A ES 466936A ES 466936 A3 ES466936 A3 ES 466936A3
Authority
ES
Spain
Prior art keywords
dosimeter
individual
filter
air
pumped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES466936A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to ES466936A priority Critical patent/ES466936A3/en
Publication of ES466936A3 publication Critical patent/ES466936A3/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Radiation (AREA)

Abstract

A chemical dosimeter improved for individual use which gathers particles or vapours in a filter which are present in an air current pumped through the dosimeter at a constant velocity, the improvement is the use of a controllable pump which is connected to the filter, driven by an electric motor and is controlled by a feedback circuit of an integrator and an amplifier and maintains a constant flow of air through the dosimeter; the integrator receives a signal from a pressure switch that detects flow changes in the air current through the dosimeter through a change in a drop in the air pressure which is pumped through a hole; the dosimeter is carried by an individual, and after a period of time, for example, one working day, the filter is removed and the contents gathered are analysed by conventional techniques such as gas chromatography in order to determine the level of exposure of the individual who used the dosimeter.
ES466936A 1978-02-13 1978-02-13 Improvements made to a chemical dosimeter for individual use. Expired ES466936A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES466936A ES466936A3 (en) 1978-02-13 1978-02-13 Improvements made to a chemical dosimeter for individual use.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES466936A ES466936A3 (en) 1978-02-13 1978-02-13 Improvements made to a chemical dosimeter for individual use.

Publications (1)

Publication Number Publication Date
ES466936A3 true ES466936A3 (en) 1980-03-01

Family

ID=8475476

Family Applications (1)

Application Number Title Priority Date Filing Date
ES466936A Expired ES466936A3 (en) 1978-02-13 1978-02-13 Improvements made to a chemical dosimeter for individual use.

Country Status (1)

Country Link
ES (1) ES466936A3 (en)

Similar Documents

Publication Publication Date Title
ES484663A1 (en) Dosimeter having a low air flow rate
ES8700436A1 (en) Pump unit.
SE8002108L (en) DOSIMETER WITH PUMP FOR CONSTANT FLOW
AU7434781A (en) Centrifugal gas-liquid contact apparatus
ES466936A3 (en) Improvements made to a chemical dosimeter for individual use.
EP0267697A3 (en) Air cleaner
AU517355B2 (en) Water filter
GB1496614A (en) Sampling apparatus
FR2406821A1 (en) Chemical dosimeter with constant flow air sampling pump - has integrator and amplifier controlling variable drive pump connected to air filter
FR2460409B1 (en)
JPS549066A (en) Method of detecting clogging of filters
JPS5393480A (en) Apparatus for collecting suspended dust
JPS5444176A (en) Tilt signal generating circuit
JPS5214446A (en) Magnetic flowmeter oscillator
JPS5338380A (en) Peak detecting circuit
GB1472976A (en) Filtering apparatus
JPS532319A (en) Apparatus for recovering actinoid metals from its solution
JPS5436649A (en) Air conditioner
JPS5379358A (en) Multistage on-line differential amplifier
FR2327532A1 (en) Radioactive particle detector for aerosol - analyses contents of aerosol deposited on replaceable filter
JPS5647754A (en) Gas chromatographic mass spectrometer
JPS5371305A (en) Automatic air supply apparatus for pump
JPS5297263A (en) Dust removing device for filters
JPS5758407A (en) Agc circuit
JPS5763755A (en) X-ray generating appratus