NEXTChem Process Analyzers, Inc.
NEXTChem is located in Elmhurst IL U.S.A.
Our Mission is to build, support and continuously improve the Best Process Analyzers in the World!
NEXTChem Process Analyzers, Inc.
Sampling never requires a filter, decreasing maintenance and increasing reliability
Modern electronics makes programming through the User-Interface very simple
Using the latest innovations in stepper motor control for precise chemical analyses
Combining Multiple Chemical Analyses with Multiple Sample Streams within a single unit
What makes NEXTChem Analyzers different?
Types of Measurement Techniques
Titration Endpoint Determination(sulfite in sea water)
Standard Addition Ion Selective Electrodes(ammonia in wastewater)
NEXTChem Process Analyzers, Inc.
Types of Titrations
Acid / Base -Acetic Acid
Redox -Sulfide
Complexation -Cyanide
Precipitation -Chloride
Color -Hardness
NEXTChem Process Analyzers, Inc.
Three Types of Ion Selective Electrodes
Solid State Membrane:
The membrane is an insoluble crystal of the ion to be determined.
Example: Fluoride, Silver/Sulfide, Chlorine
Gas Permeable Membrane:
A gas permeable membrane separates the sample from the sensor, commonly pH electrode.
Example: Ammonia, Carbon Dioxide
Neutral Carrier Membrane:
The membrane contains an ion specific complexing agent.
Example: Nitrate, Potassium
Color Measurements
Color Dip Probe is used for the measurement:
630 nm Red, 590 nm Yellow, 520 nm Green, and 470 nm Blue
The following analyses can be done with the color measurements:
Total Hardness and Calcium Hardness
NEXTChem Process Analyzers, Inc.
HANDYChem
4 Chemical Analyses / 4 Sample Points (industrial/municipal)
ECOChem
2 Chemical Analyses / 2 Sample Points (municipal)
NEXTChem Process Analyzers, Inc.
CHIPChem
4 Chemical Analyses / 4 Sample Points (semiconductor fabs)
MICROChem
2 Chemical Analyses / 1 Sample Point (semiconductor fabs)
NEXTChem Process Analyzers, Inc.
TITTREChem
8 Titration Analyses / 4 Standard Addition Analyses
No Sample System (manual sample collection)
Many Analyses Available
Ammonia (NH3), Nitrate (NO3-), Sulfide (H2S) (Wastewater)
Sulfite (SO3-2), Chlorine (Cl2) (Petroleum)
Acetic Acid (CH3COOH), Nitric Acid (HNO3) (Chemical)
Hardness (Mg+2 & Ca+2), Fluoride (F-) (Drinking Water)
Hydroxide Peroxide (H2O2), Caustic (NaOH) (Textile)
F/T Acid (H3PO4), F/T Alkalinity (H2CO3) (Metal Finishing)
Copper (Cu+2), Silver (Ag+), Cyanide (CN-) (Mining)
Ozone (O3), ABC Analysis (S-2/NaOH/CO3-2) (Pulp/Paper)
NEXTChem specializes in automating Wet Chemical Analyses!
Industrial Experiences
Robert Bosch Wiper Systems: Tienen, Belgium
Customer’s Sample: 2.40 g/L chlorine (Cl2) in water
Measurement: every 10 minutes
Accuracy: + 0.2% relative standard deviation
Sample Systems
Sample Systems
Micro Dilution: 0.25 mL - 2.00 mL (<0.1mm particles)
Standard Dilution: 5.0 mL - 30.0 mL (<2mm particles)
Standard Non-Dilution: 90 / 140 mL (<3mm particles)
Self-Cleaning Non-Dilution: 90 / 140 mL (<6mm particles)
Self-Cleaning Dilution: 5.0 mL – 30.0 mL(<6mm particles)
All Sample Systems are available for all HANDYChem/ECOChem series analyzers.
The MICROChem/CHIPChem series analyzer exclusively use Micro Dilution
The TITREChem has no sample system
NEXTChem Process Analyzers, Inc.
Filters must be changed frequently
Increases Maintenance Lowers Reliability
Creates a “fake” Sample
“The best filter is no filter”
Rob Baur
Clean Water Services
WEFTEC 1998
Why not filter the sample?
Self-Cleaning Sample Valve
This valve makes sampling < 6mm particles possible.
Most common use is in sewage plants.
Used with Clean and Low Concentration Samples
Commonly used in Drinking Water/Final Effluent Applications
Standard Non-Dilution Sample System
Sample Panel Materials
Teflon FEP tubing used in sample panel construction
PVDF is be used for the valve bodies and fittings
Commonly used in Metal Finishing Plants
Standard Dilution Sample System
Sample Panel Materials
Polypropylene SC Valve ¾” NPT sample opening
PVDF is be used for the valve bodies and fittings
Commonly used in Mining, Pulp & Paper, and Sugar Applications
SC Valve Dilution Sample System
Sample Panel MaterialsMicro-Dilution Sample System
Used with very clean and very high concentration samples.
All “wetted surfaces” PEEK or Teflon
Commonly used in the Semiconductor Industry and Chemical Plants
Modern Electronics
Why use 1980’s electronics found in most on-line analyzers, when you can have modern electronics?
Modern Electronics
Modbus is standard on all NEXTChem Analyzers.
Additional Industrial Networks Available
Profibus – DP
DeviceNet
CANopen
ControlNet
LonWorks
CC – Link
FIPIO
Phone Modems and Radio Modems can also be added
True Remote Access and Control
The analyzer is assigned an IP address and connected to the plant network.
All the screens on the touch screen are available and interactive, making remote changes possible.
Installed at Eastman Chemical in Kingsport, TN USA.
Easy to use touchscreen !
NO MORE PUSH BUTTONS!
Bright Backlight makes the User Interface easy to read
Precision Reagent Pump
7.500 mL stroke volume
Accuracy + 0.001 mL
Kalrez Seal for long life (1 year)
Communications confirmed with each movement
Stepper Motor with 8335 steps/mL or
0.00012 mL/step
Corrosive Environments
NEMA 4X (IP66) Fiberglass Enclosure
Either a Z-Purge, X-Purge, or ATEX-Purge can be supplied
Z-Purge (Class 1 Div 2) X-Purge (Class 1 Div 1) ATEX-Purge (Zone 2)
Rugged Electronics
Circuit Breaker for the Power Inlet Power Filter for the main power in 110 VAC or 220 VAC Fuses 5mm x 20mm for all internal/external devices All analog inputs have 1.5 kV isolation All analog outputs can have 1.5 kV isolation Industrial Relays with diode protection and easy to replace
Dynamic Electrode Output Display
Electrode measurements are displayed during each analysis
This information is invaluable in determining if the analyzer is operating correctly at a glance