Flowserve OR 52-5 - Manual (Page 9)

9
Explanatary Notes
continued
Function
The measuring sensor is a photometric measuring device consisting of a light source
(light emitter ) and a light receiver equipped with two photosensitive elements.
A constant light beam passes through the transparent liquid. Insoluble foreign matter
scatters the light, which is then measured using the 15° forward light scattering method.
The light intensity is transformed into an electric current which will be used by the
measuring transducer to determine the concentration of foreign matter. The actual
turbidity value is continuously compared with the adjusted setpoint and the result will be
indicated visually and - if required - acoustically.
The measuring transducer is the operating and indicating unit for signal evaluation and
the control of the measuring sensor. It serves as visual display unit for the measuring
results and the adjustment of the measuring equipment, indicating the actual value,
tripping the limit alarms ALARM 1 and ALARM 2 and releasing messages in the event of
a malfunction in the measuring sensor. The measuring transducer is designed for setting
and indicating the limit values.
Typical application of an oil & turbidity detector type OR 52-5/-6
Q D
Fig.1
ALARM
1 2
ppm
sec
cal
0
T es t
P E
OIL
ORT 6
ORG 12/22