Photoelectric immersion probe

Claim 1

AN OPTICAL ANALYZER IN THE FORM OF A COMPACT UNIT CAPABLE OF BEING IMMERSED INTO AND WITHDRAWN OUT OF A LIQUID SAMPLE, COMPRISING AN ELONGATED GENERALLY CYLINDRICAL HOUSING HAVING OPAQUE WALLS FOR PREVENTING LIGHT FROM PASSING THROUGH THE WALLS, A SECTION OF TUBING WITHIN SAID HOUSING, THE OUTSIDE OF SAID TUBING BEING LOCATED INWARDLY FROM THE OPAQUE WALLS TO PROVIDE A SPACE, LIGHT TRANSMITTING MATERIAL IN SAID SPACE, WALLS ATTACHED TO THE LOWER END OF SAID HOUSING DEFINING A CHAMBER, SAID CHAMBER HAVING OPENINGS AT ITS UPPER AND LOWER ENDS PERMITTING THE INGRESS THEREINTO AND DISCHARGE OF LIQUID THEREFROM UPON THE IMMERSION AND WITHDRAWAL, RESPECTIVELY, OF SAID UNIT INTO AND FROM THE LIQUID SAMPLE, REFLECTING MEANS ON THE WALLS OF SAID CHAMBER FOR REFLECTING LIGHT TRANSMITTED THROUGH SAID LIGHT TRANSMITTING MEANS AND LIQUID IN SAID CHAMBER BACK TOWARD THE LOWER END OF SAID TUBING, A PHOTOELECTRIC CELL LOCATED IN THE LOWER END OF SAID TUBING AND FACING SAID CHAMBER, AND AN INCANDESCENT LAMP IN THE UPPER PORTION OF SAID HOUSING FOR DIRECTING LIGHT THROUGH SAID LIGHT TRANSMITTING MEANS, SAID LIGHT PASSING FROM SAID LIGHT TRANSMITTING MEANS THROUGH THE LIQUID IN SAID CHAMBER TO SAID REFLECTIVE MEANS FROM WHICH THE LIGHT IS REFLECTED BACK THROUGH THE LIQUID ONTO SAID PHOTOELECTRIC CELL.