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INVUE GV148 LIQUID CHEMICAL CONCENTRATION MONITOR
User Guide | Entegris, Inc.
DIAGNOSTIC GUIDE
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This section covers common issues and possible solutions for the concentration monitor.
SYMPTOM
PROBABLE CAUSE
SUGGESTIONS
Refractive index and concentration
reads 30001
Fluid temperature is out of
specified range
Operate product within specified fluid
temperature range
Refractive index and concentration
reads 30002
No chemistry in flow cell
Ensure chemistry is in flowcell
Bubble trapped on surface of
sensor window
Orientate product per Mechanical
Installation section (page 8)
Refractive index and concentration
reads 30003 or 30004
Background light is too bright
Remove any bright light sources shining
on product
Avoid placement of product near
windows to the outdoors
HMI displays an explanation point for
refractive index and concentration.
Hovering mouse over it gives a message:
“ The sensor cannot obtain a valid temper-
ature measurement. Please ensure the
sensor is not in extreme temperature
conditions. A temperature re-zero may
be required.”
Fluid temperature is out of
specified range
Operate product within specified fluid
temperature range
HMI displays an explanation point for
refractive index and concentration.
Hovering mouse over it gives a message:
“ The sensor cannot obtain a valid reading.
The sensor may be exposed to air, ensure
chemistry is sufficiently being supplied
to sensor.”
No chemistry in flow cell
Ensure chemistry is in flowcell
Bubble trapped on surface
of sensor window
Orientate product per Mechanical
Installation section (page 8)
HMI displays an explanation point for
refractive index and concentration.
Hovering mouse over it gives a message:
“ The sensor cannot obtain a valid reading.
The sensor may be exposed to too much
light, reduce the sensor exposure to
ambient light.”
Background light is too bright
Remove any bright light sources shining
on product
Avoid placement of product near
windows to the outdoors
HMI will not communicate with unit when
using serial communication
Baud rate not 38400 or 57600
Configure .rc file for a Baud rate of
38400 or 57600
Wiring
Verify wiring against label on product
Server not set to localhost
When adding a new connection, make
sure Server is set to localhost and Port
set to 8888
