All-purpose Refractometer – PR23GP


kpatentsAn all-purpose refractometer for large pipe and vessel installations. Installation through a flange or a clamp connection. Area classification Zone 2 (Class I, Div. 2); Intrinsically safe process refractometer PR-23-GP-IA Area classification Zone 0 and Zone 1.

Helps to control the concentration and to assure the critical product quality attributes. The batch time and quality can be optimised, and timely and costly sampling can be reduced.

Digital sensing technology, even large amounts of suspended solids, bubbles or colour changes do not affect the measurement or the accuracy.

  • Chemicals
    Acetic acid, Acrylate, Amine oxide, Amino acid, Ammonium fluoride, Ammonium hydroxide,
    Ammonium nitrate, Ammonium sulphate, Caustic soda, Cellulose derivates, Citric acid, Copper
    chloride, Chromium trioxide (or Chromic acid), Ethylene glycol, Formaldehyde, Formic acid,
    Glycerol, Hydrogen peroxide, Iron chloride, Lactic acid, Lubricating oils, Nickel chloride, Nitric
    acid, Oleum, Polyamides, Polycarbonates, Polyethylene, Resins, Sodium bicarbonate, Sodium
    dichromate, Sodium gluconate, Sodium hydroxide, Styrenes, Sulphuric acid, Urea, etc.
  • Plastics and 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.
  • Pulp and Paper Industry
    Alum, Black liquor, CMC, Latex, Sizing chemicals and binders, Starch, PVA, Retention chemicals.
  • Salts and Sodium Compounds
    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, Salt, Soda ash, Sodium
  • Soap and Detergents
    Fructose, high fructose corn syrup, sorbitol, dextrose, glucose, xylose, maltose, mannitol,
    lactitol, aspartame, flavors. Supersaturation and seeding point control of fructose and dextrose
    syrups, cooling crystallizer, precrystallizer, main crystallizer.
  • Sugar
    Sucrose, affination, extraction, press water, thick juice, thin juice, vacuum pan, molasses, mother
    liquor. Supersaturation and seeding point control, cooling crystallizer, precrystallizer, main
Technical Details
Refractive Index Range Full range, nD = 1.3200...1.5300
(corresponds to 0...100 % b.w.)
Accuracy Refractive index nD ±0.0002 (corresponds typically to ± 0.1% by weight) Repeatability nD ±0.0001 (corresponds typically to ±0.05% by weight)
Speed of Response 1 s undamped, damping time selectable up to 5 min
Calibration With Cargille standard R.I. liquids over full range of nD 1.3200...1.5300
CORE-Optics No merchanical adjustments (US Patent No. US6067151)
Digital Measurement 3648 pixel CCD element
Light Source Light emitting diode (LED), 589 nm wavelength, sodium D-line
Temperature Sensor Built-in Pt-1000, linearization according to IEC 751
Temperature Compensation Automatic, digital compensation
Instrument Verification With standard R.I. liquids and K-patents documented procedure according to ISO 9000 quality system
Ambient Temperature Sensor: Max. 45°C(113°F), Min.-20°C(-4°F)
Sensor max. 45°C (113°F), min. -20°C (-4°F)
Indicating Transmitter max. 50°C (122°F), min. 0°C (32°F)
Process Connection Sandvik L clamp 88 mm/DIN-flange 2656,
PN40 DN80/ANSI-flange150 lbs,
3 inch/JIS-flange 10k 80A/Line sizes
less than 2" via Pipe flowcell
Process Pressure up to 25 bar (350 psi)
Process Temperature -20°C...150°C (-4°F...302°F)
Process Wetted Parts, Standard AISI 316L stainless steel, prism spinel,
prism gaskets PTFE (teflon)
Sensor Protection Class IP67, Nema 4X
Sensor Weight Sandvik clamp 3.8 kg (8.4 lbs),
Flange DIN/ANSI/JIS 6.6 kg (14.1 lbs)
Indicating Transmitter max. 50°C (122°F), min. 0°C (32°F)
Indicating Transmitter DTR
Display 320x240 pixel graphical LCD with LED backlight
Keypad 18 membrane keys
Current output Two independent current outputs, 4-20 mA, max.
load 1000 Ohm, galvanic isolation 1500 VDC or AC (peak),
hold function during prism wash
Ethernet connection 10/100 Mbit/s, data acquisition over UDP/IP Protocol
with K-Patents PR-11111 data logging software
Power AC input 100-240 VAC/50-60 Hz, optional 24 VDC, 30 VA
Alarms/Wash relays Two built-in signal relays, max. 250 V/3 A
Sensor Connectivity One or two sensors can be connected to the DTR.
Sensors independent of each other:
own parameter sets and usable in different applications.
Two current outputs configurable independently
to indicate process concentration or temperature of either sensor.
Transmitter Protection Class Enclosure IP66, Nema 4X
Indicating Transmitter Weight 4.5 kg (10 lbs)
Interconnecting Cable IEC61158-2 Complaint two-wire cable
Indicating Transmitter Weight Standard 10m (33 ft), max. 200m (660 ft)
Options Stainless steel sensor housing, prism wash,
intrinsic safety and hazardous area approvals,
cable fittings to the indicating ransmitter:
European cable glands M20x1.5 or US conduit hubs
Sensor PR-23-GP with ANSI/DIN/JIS flange
Sensor PR-23-GP with Sandvik clamp
Indicating transmitter DTR
Note: Specification are subject to change without notice.

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