38
PR-23 instruction manual
5.4.4 Diagnostic values
The values at the left of the graph are used for diagnostic purposes:
–
CONC
is the final concentration value including Field calibration adjustment, see
Figure 6.12.
–
TEMP
, see Section 5.4.5.
–
CCD
gives the position of the shadow edge on CCD in %.
–
nD
is the refractive index value n
D
from the sensor.
–
CALC
is the calculated concentration value without Field calibration adjustment,
Section 6.4.3
–
QF
or Quality Factor is a value in the range 0–200. It measures the image sharp-
ness, a typical good value is 100. A QF value below 40 usually indicates prism
coating.
–
LED
is a measure of the amount of light from the light source in %. Should be below
100 %.
–
HD TMP
= sensor head temperature, see Section 5.4.5.
–
HD HUM
= sensor head humidity, see Section 5.4.6.
–
I_SNS
value shows the current to sensor, the nominal value is 40 mA.
–
DTR TMP
= Indicating transmitter temperature, see Section 5.4.5.
–
DTR V1
gives the voltage from the power module, the nominal value is 24V.
–
DTR V2
gives the DC supply voltage, the nominal value is 3.3 V.
Note:
The Slope display also has a soft key
SENSOR RESTART
which can be used to
restart the current sensor (see upper left corner of the display for sensor letter) after
a sensor software update.
5.4.5 Temperature measurement
The system contains three different temperature measurements displayed to the left
of the graphs in Figure 5.8:
TEMP
is the process temperature used for automatic temperature compensation in the
Indicating transmitter (Section 6.4, “Calibrating the concentration measurement”).
HD TMP
measures the temperature on the Sensor processor card PR-10100 (Fig-
ure 2.1).
DTR TMP
measures the temperature on the Motherboard of the Indicating transmitter
(Figure 3.7, “Motherboard of the Indicating transmitter for AC power”).
Both sensor head temperature and DTR temperature are monitored by the built-in
diagnostics program, see Sections 8.1.8, “Message
HIGH SENSOR TEMP
”, and 8.1.9, “Message
HIGH TRANSMITTER TEMP
”.
5.4.6 Sensor head humidity
The Sensor processor card contains also a humidity sensor. The value
HD HUM
is the
relative humidity inside the Sensor. It is monitored by the diagnostics program, see
Section 8.1.7, “Message
HIGH SENSOR HUMIDITY
”.
Summary of Contents for K-PATENTS PR-23 AX Series
Page 1: ...IM EN PR23 v 2 00 Instruction Manual Vaisala K PATENTS Process Refractometer PR 23...
Page 2: ......
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Page 17: ...2 Inline refractometer sensor 7 2 2 2 PR 23 mounting guide...
Page 26: ...16 PR 23 instruction manual...
Page 29: ...4 Prism wash systems 19 Figure 4 1 A prism wash system for steam non sanitary...
Page 30: ...20 PR 23 instruction manual Figure 4 2 A sanitary prism wash system for steam...
Page 32: ...22 PR 23 instruction manual Figure 4 5 Wiring for a prism wash system for steam...
Page 33: ...4 Prism wash systems 23 Figure 4 6 A prism wash system for high pressure water non sanitary...
Page 34: ...24 PR 23 instruction manual Figure 4 7 A sanitary prism wash system for high pressure water...
Page 35: ...4 Prism wash systems 25 Figure 4 8 Wiring for a prism wash system for high pressure water...
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Page 179: ...11 Safe Drive 169 11 3 3 Safe Drive steam wash system parts...
Page 186: ...176 PR 23 instruction manual 11 4 2 Wiring Figure 11 9 PR 23 SD system wiring...
Page 204: ...194 PR 23 instruction manual Figure 11 19 Markings on the retractor handle...
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