K-Patents PR-03
A COMPACT PROCESS
REFRACTOMETER FOR
IN-LINE MEASUREMENT
OF CONCENTRATIONS
PROCESS REFRA
CT
OMETER PR
-03-D
REFRACT
CTOMETER
PR-03-D
SB:PR-03-D/0
TYPICAL APPLICATIONS
CHL
OR
-ALKALI INDUSTR
Y
CHLOR
OR-ALKALI
INDUSTRY
Ammonia, Ammonium chloride, Calcium hypochlorite,
Caustic Soda, Chlorine, Soda Ash, Sodium bicarbonate,
Sodium hypochloride, etc.
FIBERS
Acetate, Acrylics, Adipic acid, Caprolactam, Cyclohexanol,
Cyclohexanon, Dimethylterephthalate, Dimethylformamide,
Fiberglass, Hexamethylene diamine, Nylon salt, Polyamides,
Polyesters, Rayon, Spandex, Vinyls. Finishing, coating and
dyeing mediums of textiles.
ELECTROL
YTIC INDUSTRIES
ELECTROLYTIC
Alumina, Aluminium, Ammonia, Hydrochloric acid,
Magnesium chloride, Phosphoric acid, Potassium hydroxide,
Sodium chloride, Sodium dichromate, Sodium hydroxide, etc.
ION EX
CHANGE CHROMA
TOGRAPHY
EXCHANGE
CHROMAT
Regeneration chemicals of ion exchangers.
PAPER INDUSTR
Y
INDUSTRY
Alum, CMC, Latex, Sizing chemicals and binders,
Starch, PVA, Retention chemicals.
PLASTICS INDUSTRY
Acrylate, Cellulose derivates, Polyamides, Polycarbonates,
Polyethylene, Resins, Styrenes, Vinyls, etc.
PO
TASSIUM INDUSTR
Y
POT
INDUSTRY
Potassium carbonate, Potassium chloride, Potassium
hydroxide, Potassium nitrate, Potassium thiocyanate, Trona
SAL
T AND SODIUM COMPOUNDS
SALT
Brine, Glauber's salt, Sodium carbonate, Sodium chloride,
Sodium sulfate, Sodium sulfite, etc.
SOAP AND DETERGENTS
Fatty acids, Fatty alcohols, Caustic potash, Caustic soda,
Glycerol, Oleum, Salt, Soda ash, Sodium bicarbonate
MISC. CHEMICALS AND O
THERS
OTHERS
Acetic acid, Amine oxide, Amino acid, Ammonium
fluoride, Ammonium hydroxide, Ammonium nitrate,
Ammonium sulphate, Citric acid, Copper chloride,
Chromium trioxide (or Chromic acid), Ethylene glycol,
Fluorosilicic acid, Formaldehyde, Formic acid, Gelatine,
Hydrochloric acid, Hydrogen peroxide, Iron chloride, Lactic
acid, Lubricating oils, Nickel chloride, Nitric acid, Oleum,
Sodium dichromate, Sodium gluconate, Sodium hydroxide,
Sulphuric acid, Urea
and more.
K-P
ATENTS PROCESS REFRA
CT
OMETER PR
-03-D
-PA
REFRACT
CTOMETER
PR-03-D
IN-LINE REFRACTOMETER FOR
EXACT PROCESS CONTROL
Pipe sizes 1" (25 mm)
Pipe sizes 2,5" (76.1mm)
and larger
EASY TTO
O INST
ALL AND
INSTALL
OPERATE
OPERA
TE
K-Patents Process Refractometer PR-03-D
provides truly accurate means for
measuring liquid concentrations in various
industrial applications.
The mounting site is freely selectable,
because the K-Patents PR-03-D sensor and
indicating transmitter are separate.
The sensor is mounted in a pipe bend by a
clamp connection. For mounting in smaller
pipes K-Patents provides a specially
designed flow cell. The mounting design
creates optimum flow velocity on the
measurement surface providing a selfcleaning effect.
The K-Patents PR-03-D offers many
advantages when aiming at exact process
control. Low and high concentration
alarms can be configured to allow smooth
real-time operation of the process.
The measurement accuracy is not
influenced by particles, bubbles, colour
or temperature changes of the process
liquid. Furthermore, the measuring system
does not require recalibration or frequent
maintenance.
MEASUREMENT
PRINCIPLE
CALIBRATION
The K-Patents PR-03-D comes precalibrated to 0-100 % b.w. for the user's
specific solution. The calibration is made
using certified refractive index liquids and
refractive index/concentration tables.
Prism
Light
source
Digital
CCD-camera
Critical
angle
Process
medium
The light source sends light against the
interface between a prism and the process
solution, where the rays meet the surface
at different angles.
Light Source
Prism
The angle corresponding to the
shadow line is called the Critical
Angle of Total Reflection. The Critical
Angle is a function of the concentration of the solution.
Reflected light
A digital CCD-camera detects the
optical image and the shadow line.
Refracted light
EASY FINETUNING BY
TION
CALIBRATION
FIELD CALIBRA
Because the K-Patents PR-03-D is fully
digital instrument the final calibration can
be finetuned in-line according to the user's
standard laboratory determinations.
The user collects samples under different
process conditions and takes simultaneous display readings. A computer
program calculates new parameters and
they are entered through the keyboard.
VERIFICA
TION USING
VERIFICATION
CERTIFIED REFRACTIVE
INDEX LIQUIDS
iti
Cr
Thus an optical image with a dark sector
and a light sector is created.
ca
la
ng
Some rays are totally reflected; total reflection occurs. And some rays are partially
reflected and partially refracted into the
process solution.
le
Solution
The camera has a row of photocells
in one chip to transform the optical
image point-by-point to an electrical
signal. The exact shadow line position
is located and converted to a reading
in concentration units.
If desired, the measurement range and the
measurement unit can be freely changed
by keyboard entry. No mechanical adjustments or parts are needed. The change
can be done, when the instrument is
installed and operating.
The quality of the optical image is
mathematically analysed and constantly
monitored to ensure reliable measurement and high precision.
The K-Patents PR-03-D calibration and
accuracy can be easily verified on-site with
Refractive Index liquids. Thus the calibration is traced to national standards. This
is needed for the ISO 9000 or other
quality systems.
DESIGN
Air cooling fins
Image digitizer
Thermal conductor
Thermal isolation
(Teflon®)
Thermal isolation
(Ceramic)
CORE-Optics
CCD-camera
Light source
Prism
Temperature sensor
Patented CORE (Compact Optical
Rigid Element) Optics:
All measuring components are in one solid
module. The design provides error-free
operation under vibrating conditions and
varying temperatures and pressures.
(US Patent No. 6067151)
SPECIFICATIONS
Refractive Index range, standard
Accuracy:
Speed of response:
Damping time constant:
Process temperature:
Temperature compensation:
Ambient temperature:
Process pressure:
Recommended flow velocity:
Protected by the following US Patent:
SENSOR:
Wetted parts, standard:
Wetted parts, option:
Sensor weight:
Process connection:
Temperature measurement:
Image detector:
Light source:
Sensor protection class:
Hazardous area classification:
Exproof:
INDICATING TRANSMITTER:
Transmitter protection class:
Indicating Transmitter weight:
Display:
Keypad:
Current output
Serial output:
Power:
Alarms:
INTERCONNECTING CABLE:
Interconnecting cable length:
OPTIONS:
ORDERING INFORMATION:
K -P
ATENTS O
Y
-PA
OY
P.O. BOX 77
ELANNONTIE 5
FIN-01511 VANTAA, FINLAND
PHONE: INT.+358-9-8256 640
FAX: INT.+358-9-8256 6461
[email protected]
WWW.KPATENTS.COM
R.I. 1.3100...1.5400 (corresponds to hot water...100 Conc% b.w.) with spinel prism
R.I. ± 0.0002 (corresponds typically to ± 0.1% by weight).
Repeatability and stability correspond to accuracy.
1.2 s undamped
Selectable up to 5 min
-20°C...130°C (-4°F...266°F)
Automatic, by mathematical curve
Sensor: max. 45°C (113°F), min. -20°C (-4°F),
Indicating transmitter: max. 50°C (122°F), min. 0°C (32°F)
max. 15 bar (200 psi) at 20°C (70°F)
Above 1.5 m/s (5 ft/s)
Patent No. US6067151
AISI 316L stainless steel, prism gaskets teflon, prism spinel
Hastelloy C/ASTM C276, Titanium/ASTM B348 GR2, Nickel 200, Tantalum, Zirconium/Zr702
2 kg (4,4 lbs)
Sandvik L clamp 76,1mm (2 1/2")
or for smaller pipe sizes via -PFC Pipe Flowcell 25mm (1"), process connection ANSI 150 psi or DIN PN 25,
material of construction AISI 316, Hastelloy C/ASTM C276 or Nickel 200
Built-in Pt-100
1024 pixel CCD-element
Light emitting diode (LED)
IP67, Nema 4X
Zone 2 IIC T4 (KEMA No. EX-00.Y.1153)
Exproof by purging
Enclosure IP66, Nema 4X
4,5 kg (10 lbs)
256 x 128 pixels graphic liquid crystal (LCD)
18 membrane keys
4-20 mA/0-20 mA, max. load 1000 Ohm, galvanic isolation 1500 V DC or AC (peak)
Built-in hold function during prism wash.
RS485/RS232, galvanic isolation 500 V DC or AC (peak)
100-115 V/220-240 V, 50/60 Hz, 15 VA
Two built-in signal relays, max 24 V, 500 mA, DC/AC
Shielded cable, 2 twisted pairs with individual shields, 0.5 mm2
Digital transmission according to RS485
Standard 10 m (33 ft), max. 100 m (330 ft)
Cable fittings to the indicating transmitter: European cable glands or US conduit hubs,
External output unit 4-20 mA, Relay units for alarm, Stainless steel sensor cover
- Desired scale, properties of process solution
- Length of interconnecting cable
- Process temperature and pressure range
- Supply voltage and frequency
- Process flow range and pipe diameter
- Options and accessories
K-P
ATENTS
-PA
TENTS,, INC.
1804 CENTRE POINT CIRCLE, SUITE 106
NAPERVILLE, IL 60563
U.S.A.
PHONE: (630) 955 1545
FAX: (630) 955 1585
[email protected]
WWW.KPATENTS.COM
We reserve right to technical alterations.
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