SENTINEL®
|
 Active Free Chlorine (ppm) |
HMI and PLC |
| Chlorine Dioxide (ppm) |
Graph Trends |
| Peroxy Acetic Acid (PAA) |
Production/Sanitation Mode |
| Total Chlorine |
Line Occupation Mode History |
| ORP |
Processed Product History |
| pH |
Data Reporting/Recording |
| Flow |
Recipes |
| Level |
Alarm Notification |
| Temperature |
Email and SMS |
| Conductivity |
Intuitive Navigation |
| Built-in Alarm |
User-Friendly Program |
Sentinel
The Advanced SENTINEL is an essential “state of the art” tool for complete automation and management of the water treatment process. With recipes for a quick change of set points for different products and HMI touchscreen for a detailed view of levels and alarms. A detailed summary program with graphs and cloud storage is available.
Monitoring and Control
The Advanced SENTINEL is an essential “state of the art” tool for complete automation and management of the water treatment process. It provides multi-parameter monitoring, pump and valve control, data recording, and data reporting of all the processes. The SENTINEL uses real-time monitoring with internet and network connectivity using Ethernet and Wi-Fi. The SENTINEL can measure Chlorine, Total Chlorine, Chlorine Dioxide (ppm), PAA, ORP, pH, Conductivity, Flow and Temperature. Modular design allows you to select any desired measurement options. The SENTINEL is a versatile system for the automation of your wash water disinfection. It may be used to manage Chlorine, Chlorine Dioxide, Peroxide, Peroxy Acetic Acid (PAA), pH control for Acid and Caustic, and most other oxidizer treatments.
Analytical measurements of various water parameters provide critical and useful information that may be utilized for optimizing water treatment and proper disinfection. The SENTINEL has 6 direct sensor inputs which may be any controlling ppm, ORP, pH and Conductivity or may be any combination of these. Can manage 4 measuring pumps, flow sensor, level sensor, and automatic valve with 6 user levels of access.
Alarm
Built-in safety alarms are used to interrupt and shut off chemical feed pumps and valves and create an alarm notification. An alarm may be programmed on the upper and lower limits of any parameter. Functional timers may be programmed for safety interlocks and to shut down or start up specific items. In the event of an alarm, a visual strobe light turns ON, and a notification is transmitted by email up to 5 email addresses.
Interlocks
Unique interlocks and advanced algorithms are applied to not allow certain functions to occur while another function is active. Typically, when Chlorine and Acid treatments occur, mixing of the two chemicals in the process can cause a dangerous and volatile reaction. If chlorine is added at a high acid low pH condition, it causes the chlorine gas to release which can cause irritation and worker hazard. The interlock function prevents the two chemicals from injecting together. In order for chlorine to be active, it requires the pH to be in the optimum range between 6.5 and 7.5. If the pH is too high, the chlorine is inactive and ineffective, and the free chlorine (hypochlorous acid) level will be low. If acid and chlorine (sodium hypochlorite) are added together, it may cause a seesaw effect between acid and chlorine levels. Interlocks can prevent the two chemicals from injecting together.
Timers
Timer functions of the SENTINEL are effective in managing process conditions for accurate treatment at appropriate times. They are also utilized to create alarms in order to prevent any undesirable conditions that may be unsuitable for the process. The initial startup timer is used to set a time limit at the initial system startup to create a time delay and prevent any alarms from occurring while the water system is equalizing. Another timer is activated after an alarm condition is reset in order to prevent new alarms from occurring and to allow the system to equalize. Several other timers are utilized that are activated when a chemical feed pump turns ON, and if the process condition is not corrected within the specified time, it turns ON the alarm.
Tank Water Quality
The SENTINEL automatically refreshes the water tank and prevents the build-up of organic materials that may cause undesirable chloramines and trihalomethanes, which compromise chemical reactions and affect product quality and safety. Measurement of Total Chlorine or conductivity may be used to measure the build-up of organic and inorganic materials. An output signal activates a relay to open a solenoid valve and drain some of the water out of the tank. As freshwater enters the tank, the water gets
cleaner and the solenoid is automatically shut off, thus maintaining clean water.
Communication and Interface
User-friendly menu selection provides easy set up of control, alarm points, and data recording with access via Ethernet or USB connection. Ethernet and WiFi internet connection allows access via any web browser from anywhere. Alarm notifications are sent by emails. Regularly scheduled data record files may be sent automatically via email.
