• Concentration, Dissolved Solids, Wt. %, Vol %, Density, °Brix.
• In-Line Sensor Provides Real Time Analysis.
• No Scheduled Maintenance Requirements!
• Extreme Calibration Stability, Guaranteed for 3 Years!
• Typical Accuracy Better Than 0.10 Weight %!
• Factory Calibrated for Easy Installation and Start-up!
• Industry Standard Dual 4-20 Outputs and Alarms.
• Robust NEMA 7 Enclosure With Display.
• Automatic Temperature Compensation.
• Internal 8000 Point Data Logger.
• All Welded, Seal-less Sensors Available.
• Easy Re-configuration and Powerful Diagnostics via Laptop/PC.

For more detailed information see the following:

• Selecting an Inferential Analyzer

  The Model CP20 can often be used with great benefits in applications historically reserved for other inferential process analyzer technologies such as conductivity meters, densitometers, or refractometers. A conductivity meter is used inferentially when a conductivity of 126 mS is observed for a liquid known to consist of common salt, and is at a temperature of 20 ° C and therefore a salt concentration of 10 percent by weight is inferred because 126 mS is the published value for 10 Wt. % common salt. Similarly, we have NuSonics Div. has a database of values of sound velocity for hundreds of chemicals and liquids which is used to calibrate the CP20 to provide the analysis value.
  
  Inferential analyzers work best either in binary liquids or in liquids in which only one ingredient is changing.

  　

• Sensor Mounting and Materials

  An assortment of sensors are available for use with the CP20. These include tri-clover or flange mount insertion sensors, inline spool pieces or filler flange wafer sensors, and low volume small line flow through sensors. These sensors are available in a variety of materials including 316 or 304L stainless steel, Hastelloy B, C, Alloy 20, PVDF (Kynar), and polypropylene. Certain sensors are suitable for CIP or no-metal-contact processes. Options are available for sensors operational to 350 ° C (660 ° F), 2000 PSIG, and the harshest of chemical environments. The Model CP20 is preferably attached directly to the sensor, but may be separated from the sensor by use of interconnecting cables installed in conduit. In most cases, the CP20 can be used with existing NuSonics sensors.

• What's New in the Model CP20 The Model CP20 takes advantage of the recent development of low cost, high speed digital signal processors. Previous versions of Sonic Liquid Analyzers transmitted a single pulse of sound, and a timing circuit measured its transit time. The frequency of the transmitted sound was determined by the physical dimensions of the transmitting acoustic crystal. The model CP20 uses a novel continuous pulse approach. The transmitting crystal is excited by a sine wave signal, and the received sine wave is digitized. The excitation sine wave frequency can be easily varied. Continuous excitation of the crystal results in higher decibel levels transmitted. By automatically varying the frequency, chemicals or liquids which absorb sound at some specific frequency or processes can now be successfully measured. The Model CP20 also takes advantage of the common availability of laptop and personal computers. These devices can function as a high quality user-friendly interface utilizing a powerful factory provided software package. The software contains easy to use procedures for checking the calibration and printing reports to meet the documentation needs of many certification programs. The Model CP20 also incorporates an 8000 point data logger. The software allows many forms of manipulating this data, from graphing it to using it for calibration adjustment or new application setup.

  　

Application Notes:

Operational
Display	2 Line by 16 Character
Power	24 VDC, 115 VAC, 230 VAC, 24 VAC Options
Analog Outputs	Dual 4 — 20 mA Outputs
Digital I/O	RS-232 & RS 485
Relays	Three SPDT relays, .1A @ 115VAC, intended for PLC or DCS interface (High, Low and Fault)
Ambient Temp.	-20 to 70 ° C (-5 to 160 ° F)
Mechanical
Enclosure	NEMA 7 Explosion Proof & Water Resistant with window (meets Class 1, Div.2 groups  B, C, D and others)
Weight	Varies with sensor style selection, typically less than 25 lbs.
Mounting	Standard: 2" 150# ANSI flange.  Other sizes and configurations available
Wetted Materials	Standard: 316 Stainless Steel, also available in 304 SS, C20, Hastelloy B & C, Polypropylene, Kynar (PVDF) and other materials.
Performance
Range	Sound Velocity: 500 - 3000 meters/sec (any acoustically transparent liquid) Temperature: -15 to 185 ° C (5 — 365 ° F) Standard
Resolution	Sound Velocity: ± 0.01 meters/sec Temperature: ± 0.01 ° C
Repeatability	Sound Velocity: ± 0.10 meter/sec Temperature: ± 0.05 ° C
Response Time	2 Seconds
Accuracy	Sound Velocity: ± 0.20 meter/sec Temperature: ± 0.10 ° C Concentration: Application Dependent, typical values are ... Acids and Caustics: ± 0.05 Wt. % Salts: ± 0.1 Wt. % Organic liquids: ± 0.1 to 0.2 Wt. % Oils in water: ± 0.2 Vol. % Sugars: ± 0.1 °Brix
Calibration Stability	3+ Years, based on 0.003 mils/year corrosion rate of wetted materials.
Certifications	N.I.S.T. traceable certificates available for certain applications.
Setup	Factory default, RS232 digital link to PC or laptop.
Software	Requires Windows 95, NT or better, 8 Mb RAM preferable.
Note: Specifications are subject to change without notice.

• Displays Concentration in a Variety of Units
• Instantaneous Measurement- Faster, Easier, and More Repeatable Than Titration
• Up to 0.02% by Weight Accuracy
• No Moving Parts and Virtually No Maintenance
• Measure Acids, Bases, Organics, Polymers and Many Others