K-Patents PR-33-S User manual

SEMICON PROCESS REFRACTOMETER PR-33-S
INSTRUCTION MANUAL
IM-EN-PR33S Rev. 1.42

Document/Revision No. Rev. 1.42 Eecve: February 19, 2019
General safety consideraons
The process medium may be hot or otherwise hazardous. Use shields and
protecve clothing adequate for the process medium - do not rely on avoid-
ance of contact with the process medium.
Precauons when removing a sensor from the process line :
• Check rst that the process line is depressurized and drained.
• Loosen the owcell screws cauously, be prepared to ghten again.
• Ensure you are clear of any possible spillage and you have a clear emer-
gency escape path.
Warranty
K-Patents is rigorous in ensuring that all products manufactured and supplied by
K-Patents shall be free of defects in material and workmanship. K-Patents agrees
to either replace or repair free of charge any product found to be defecve, or parts
thereof when returned to the nearest authorized K-Patents repair facility within two
(2) years of the product’s delivery date.
Important: The warranty is void if the sensor has been taken apart or in any way
tampered with.
Before returning a defecve product for service or replacement, please contact K-Patents
or your nearest K-Patents representave (see hp://www.kpatents.com/ for contact
informaon) for packing and shipping informaon.
Disposal
When wishing to dispose of an obsolete instrument or any parts of
an instrument, please observe local and naonal regulaons and re-
quirements for the disposal of electrical and electronic equipment.
This product manual is delivered to the end user with a K-Patents
product. Informaon in this manual is subject to change without no-
ce. When the manual is changed, a revised copy is published at
hp://www.kpatents.com/.

Table of contents
1 Introducon .................................................... 1
1.1 Principle of measurement .................................. 1
2 Ethernetconnecon ............................................. 4
2.1 Ethernet specicaon ..................................... 4
2.2 Connecon sengs ....................................... 6
2.2.1 IPsengsforsensor ..................................... 6
2.2.2 IP sengs for stand-alone computer . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2.3 Conguring a network of sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Tesng the Ethernet connecon ............................. 8
2.3.1 Troubleshoong the connecon . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Instrument homepage .................................... 10
2.4.1 Mainpage ............................................ 12
2.4.2 Parameters ........................................... 13
2.4.3 Diagnoscs ........................................... 14
3 Inlinerefractometersensor ...................................... 15
3.1 Mounng the sensor ..................................... 15
3.1.1 Choosing sensor mounng locaon . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.2 PR-33-S sensor installaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.1.3 Check list for pipe mounng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1.4 Mounngcover ........................................ 19
3.2 Connecng the sensor .................................... 19
3.3 Connecng with Fieldbus converter ......................... 20
4 Startupanduse ................................................ 23
4.1 Startup ................................................ 23
4.1.1 Inialcheck ........................................... 23
4.1.2 Calibraoncheck ....................................... 23
4.2 Viewing sensor status .................................... 23

5 Conguraon and calibraon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1 Conguring the refractometer ............................. 24
5.1.1 Signaldamping ....................................... 24
5.2 Calibrang the concentraon measurement .................. 26
5.2.1 Thechemicalcurve .................................... 27
5.2.2 DirectBIASadjustment ................................. 28
6 Regularmaintenance ........................................... 29
6.1 Prevenve replacement of o-ring in EKC265 applicaon ........ 29
7 Troubleshoong ............................................... 30
7.1 Hardware .............................................. 30
7.1.1 Message HIGH SENSOR HUMIDITY ............................ 30
7.1.2 Message HIGH SENSOR TEMP ............................... 30
7.2 Measurement .......................................... 30
7.2.1 Message OUTSIDE LIGHT ERROR or OUTSIDE LIGHT TO PRISM .......... 30
7.2.2 Message NO OPTICAL IMAGE ............................... 30
7.2.3 Message PRISM COATED .................................. 31
7.2.4 Message LOW IMAGE QUALITY .............................. 31
7.2.5 Message NO SAMPLE .................................... 31
7.2.6 Message TEMP MEASUREMENT FAULT ......................... 31
7.2.7 Concentraon dri during NORMAL OPERATION ................ 32
7.3 Diagnosc messages table ................................ 32
8 Ethernet protocol specicaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.1 Communicaon protocol ................................. 33
8.1.1 Requestformat ....................................... 33
8.1.2 Responseformat ...................................... 34
8.1.3 Request and response errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.2 Request-response pair specicaon ........................ 35
8.2.1 NULLmessage ........................................ 35
8.2.2 Protocolversion ....................................... 35
8.2.3 Refractometer informaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.2.4 Measurementresults .................................. 36
8.3 Error message specicaon ............................... 37
Index ............................................................ 39

ECdeclaraonofconformity ......................................... 41
PR-33-S refractometer eld calibraon form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

1 Introducon 1
© Copyright K-Patents 2019. All rights reserved.
1 Introducon
The inline refractometer sensor PR-33-S (gure 1.1) measures the refracve index nD
and the temperature of the process medium. The concentraon of the process liquid is
calculated from these values when the composion of the process medium is known.
The output values of the sensor are transmied through its Ethernet connecon by
using a UDP/IP protocol (see chapter 2). An oponal mA output unit is also available.
Figure 1.1 PR-33-S sensor
1.1 Principle of measurement
The K-Patents inline refractometer determines the refracve index nDof the process
soluon. It measures the crical angle of refracon using a yellow LED light source
with the same wavelength (589 nm) as the sodium D line (hence nD). Light from the
light source (L) in Figure 1.2 is directed to the interface between the prism (P) and the
process medium (S). Two of the prism surfaces (M) act as mirrors bending the light rays
so that they meet the interface at dierent angles.
The reected rays of light form an image (ACB), where (C) is the posion of the crical
angle ray. The rays at (A) are totally internally reected at the process interface, the rays
at (B) are parally reected and parally refracted into the process soluon. In this way
the opcal image is divided into a light area (A) and a dark area (B). The posion of the

2PR-33-S instrucon manual
Document/Revision No. Rev. 1.42 Eecve: February 19, 2019
L
P
MM
S
ACB
Figure 1.2 Refractometer principle
shadow edge (C) indicates the value of the crical angle. The refracve index nDcan
then be determined from this posion.
The refracve index nDchanges with the process soluon concentraon and temper-
ature. For most soluons the refracve index increases when the concentraon in-
creases. At higher temperatures the refracve index is smaller than at lower tempera-
tures. From this follows that the opcal image changes with the process soluon con-
centraon as shown in Figure 1.3. The color of the soluon, gas bubbles or undissolved
parcles do not aect the posion of the shadow edge (C).
BB
CC
AA
Low concentration High concentration
Figure 1.3 Opcal images
The posion of the shadow edge is measured digitally using a CCD element (Figure 1.4)
and is converted to a refracve index value nDby a processor inside the instrument.
This value is used together with the measured process temperature to calculate the
concentraon.

1 Introducon 3
© Copyright K-Patents 2019. All rights reserved.
a. Optical image
b. CCD element
c. CCD output
V
Figure 1.4 Opcal image detecon

4PR-33-S instrucon manual
Document/Revision No. Rev. 1.42 Eecve: February 19, 2019
2 Ethernet connecon
The Ethernet connecon enables data download from a PR-33 sensor to a computer.
Any type of computer (PC, Mac, PDA, mainframe...) with a compable network con-
necon can be congured to view and download data from the sensor. Sensor congu-
raon and monitoring can be carried out without special soware by using a standard
web browser. Secon 8.1 gives all the specicaons necessary to write a data acquisi-
on program.
2.1 Ethernet specicaon
The sensor is designed to be connected to a network with PoE (Power over Ethernet,
IEEE-802.3af) mode A support, as it receives its operang power through the Ethernet.
The sensor is equipped with an integrated Ethernet cable, 10 meter long. The cable
can be connected to any standard RJ45 Ethernet equipment. Addional length can be
gained by using a UTP joint adapter/coupler with a standard Ethernet cable, length up
to 90 meters. The maximum communicaon speed of the sensor is 100 Mbit/s (Ether-
net 100BASE-T).
In the simplest form the network consists of a sensor, a computer, and a PoE switch.
This conguraon is shown in gure 2.1.
PR-33
PoE
switch
Laptop
Figure 2.1 Simple network conguraon.
Several sensors can be connected to the same Ethernet network. Also, the sensors have
an automac funcon to detect the polarity of the network so that the network may
ulize either cross-over or straight interconnecng cables.
Figure 2.2 shows an example of how to connect three sensors to an exisng LAN with
no PoE funconality. A single PoE switch will suce in this case.