MPRE-SCAN HYBRID-DIGITAL REFRACTOMETER MPR E-SCAN HYBRID-DIGITAL REFRACTOMETER INTRODUCTION The Electron Machine Corporation has been designing and manufacturing in-line process refractometers since the early 1960s. Our focus is providing simple, rugged, and reliable instruments that provide value over time with accurate measurement, minimal mainte- nance, and long service life. The MPR E-Scan is a hybrid-digital critical angle refractometer. It is used to measure the refractive index of process fluids and may be used as an error indicator or an integral part of a complete process control system. The MPR E-Scan is calibrated and temperature compensated to your process specifica- tions. It is ready for installation and immediate use when received. Calibration proce- dures are available to change system parameters and allow the refractometer to measure different process fluids. HOW IT WORKS: HYBRID-DIGITAL MEASUREMENT Energy radiated from the LED passes through the prism surface to be reflected off a mirror to the CCD Array prism-to-process interface. The light reaching this interface intersects the same interface over a series of angles specifically chosen to include the critical angle LED (Ic) for the process being measured. Light intersect- ing the interface at an angle greater than critical angle Lens is refracted into the solution. Light intersecting the Prism interface at less than critical angle is reflected up out Ic Refracted of the prism up to the digital CCD linear array to be Light Rays scanned. The resolution of each sensing head is maximized by selecting the angle of the prism for the measurement and temperature range of the process. CCD Array The MPR E-Scan refractometer utilizes a hybrid-digital measurement principle. The CCD (charged coupled device) in the sensing head digitally measures the refractive index of the process. Any change in critical angle changes the ratio of light to dark periods. The digital measurement is temperature compensated and converted to a variable voltage by rugged electronic devices in the sensing head. This allows the relatively sensitive micro-processor driven devices to be located in the electronics console where more pro- tection from the process can be provided. The signal is then further enhanced and displayed as a reading in refractive index, Brix, solids, percent, or other measurement unit. This combination of state-of-the-art micro-processors combined with tried-and-true analog components provides a high-level of accuracy along with the rugged dependabil- ity required for years of use when installed in harsh industrial environments. Signal showing change in pulse width caused by concentration change. E-SCAN CONSOLE The console is constructed of molded fiberglass polyester for maximum protection in harsh environments. It is rated NEMA 4X and can be installed outdoors without any additional protection. The front panel consists of a high-resolution, daylight readable, color TFT-LCD display and a 20-button touch pad. This forms the user interface and allows easy navigation through the various menu options. The entire door assembly can be removed and replaced easily to minimize down-time in the event of a failure or to allow upgrading the electronics in the future. STANDARD E-SCAN FEATURES SENSING HEAD OPTIONS · Color TFT-LCD display with LED backlight · Standard or Extended Probes and 640x480 pixels · Intrinsically Safe · Menu-driven software with diagnostics · Severe Duty for installations with · Factory calibrated and delivered ready for extreme vibration installation · Various alloys and elastomers for · Sensing head configured and manufactured wetted parts (316 & 2205 S/S std.) for your specific application for maximum · S/S NEMA 4X cable connector resolution Standard Extended · Multi-range capability · NEMA 4X fiberglass electronics console · NEMA 4X all stainless steel sensing head with sapphire prism · (2) Input & (6) Output relays configurable for controlling alarms and cleaning solenoids · 4-20mA (non-isolated) and RS-232 outputs OPTIONAL E-SCAN FEATURES OPTIONAL OUTPUTS · Flush panel mounting of console · Printer Output · Vortex cooled electronics console · Remote Display · Measurement & Temperature PID Control · RS-422/485 · Multi-range calibration as requested · HART® Protocol Interface · Dual sensing head capability · Isolated 4-20mA for Measurement · Intrinsically safe sensing head · Isolated 4-20mA for Temperature · Air-purging of console and sensing head · Isolated or non-isolated 4-20mA (Type X and Y/Z) for control APPLICATIONS The use of the MPR E-Scan refractometer on your process guarantees a more consistent quality product. This in turn leads to lower production costs. In today’s competitive marketplace quality and cost are the key discriminators to greater profits. Depend on our over 40 years of experience in process refractometers to assist in application details for your process. PULP & PAPER INDUSTRY Black Liquor Coatings Green Liquor Resin Red Liquor Tall Oil FOOD INDUSTRY Sucrose Jams & Jellies Soft Drinks Fructose Milk Beer Dextrose Fruit Juices Tomato Paste CHEMICAL INDUSTRY Sulphuric Acid Sodium Hydroxide Oleum Hydrochloric Acid Sodium Carbonate Glycol Phosphoric Acid Urea Ethanol DMAC PVOH PVA 1.55 Black Liquor Sucrose 1.5 1.45 HCl H SO NaOH 2 4 1.4 Ethanol 1.35 1.3 0 10 20 30 40 50 60 70 80 90 100 CONCENTRATION REFRACTIVE INDEX TYPICAL PROCESS ADAPTERS Sanitary Spool Flanged Spool The Electron Machine Corporation supplies adapters to complete the installations of the refractometer to your process. These adapters are available in standard or custom sizes. Some common types include tubing, standard pipeline and sanitary adapters, vessel mounts, and special isolation valve adapters that allow the refractometer to be removed from an active pipeline without any special tools. Materials and special alloys are avail- able to suit your process requirements. The adapters can also be supplied with a built-in prism wash jet that can be automatically activated by the refractometer program. The prism wash is user variable and the refracto- meter will supervise the proper operation of this Isolation Valve cycle. For difficult applications EMC has designed special cleaning systems and adapters. Consult the factory or local representative for assistance in your selec- tion. Vessel or Tank Mount WARRANTY Electron Machine Corporation warrants that the equipment manufactured by EMC is free of defects in material and workmanship. Should such a fault appear within two years of date of shipment from our factory, the Electron Machine Corporation will repair or replace the defective part upon its prepaid return to Umatilla, Florida, U.S.A. This war- ranty does not apply to equipment which has been tampered with or abused. Additionally, a process performance guarantee ensures that the MPR E-Scan will meet or exceed written specifications. SERVICE The Electron Machine Corporation strives to maintain the best service possible for our customers. A 24 hour/day, 7 days/week technical support telephone line is monitored by one of our factory trained service personnel for fast help in emergency situations. Addi- tionally, the services of our highly experienced field engineers are also available at stan- dard rates for on-site repairs and training. ABOUT US Founded in 1946, Electron Machine Corporation designs and manufactures industrial measuring and control instrumentation in Umatilla, FL, U.S.A. The successful applica- tion of our refractometers to many process streams has made it the specified standard in the pulp & paper, food, and chemical processing industries. A worldwide network of experienced sales and service personnel assures economical process measurement and control with years of trouble-free service. E-SCAN HYBRID-DIGITAL REFRACTOMETER SPECIFICATIONS ACCURACY ±0.05 BRIX (.000075 R.I.) or 0.5% of span Corresponds to accuracy REPEATABILITY/STABILITY Congured for specic application for max. resolution SPAN RESPONSE TIME 0.25 seconds to 3 minutes PROCESS TEMPERATURE Up to 150°C (300°F) without air purge Sensing Head: up to 52°C (125°F) without air purge AMBIENT TEMPERATURE Console: up to 50°C (120°F) without vortex cooled console Color TFT-LCD with LED backlighting DISPLAY 640 X 480 Pixel, daylight-readable INTERCONNECTING 6M (20FT) standard 300M (1,000FT) maximum CABLE SENSING HEAD 2205 Duplex S/S, Sapphire, PEEK®, VITON® (other alloys & elastomers available on request) WETTED MATERIALS 4-20mA non-isolated, 0-10 Vdc non-isolated, RS-232 STANDARD OUTPUTS (6) congurable output relays (A/C or D/C) (2) congurable input relays (A/C or D/C) 85-260Vac, 50/60Hz, 50VA POWER P.O. Box 2349 · 15824 CR 450 West · Umatilla, FL 32784-2349 · (352) 669-3101 · Fax (352) 669-1373 www.electronmachine.com · sales@electronmachine.com