If Anti Integral (Anti Windup) Submenu “Enabled”, this feature allows the error term outside the proportional band to be calculated and accumulated for integration. This may be an important feature in applications where fast response time is desirable.

START AUTO TUNE PID:

Press d 27) Display flashes ENBL or DSBL.

Press b 28) Scroll through the available selections: “Enable” or “Disable”. Press d 29) Display shows STRD stored message momentarily and then advances to CYCL only, if it was changed, otherwise press a to

advance to CYCL Cycle Time Submenu.

If “Enabled”, the controller is ready to calculate P, PI or PID parameters. The instrument performs this by activating the output and observing the delay and rate at which the Process Value changes. The setpoints must be at least 18°F or 10°C above the (PV) Process Value in order to perform Auto Tune, otherwise an error message will be displayed.

To start Auto Tune PlD select PID, enable Auto PID and enable Start PID. Sometimes Auto PID parameter needs fine tuning i.e. for each 5°F over shoot increase the Proportional Band (PB) by 15% and for each ±1°F fluctuation at the Setpoint (SP) increase reset by 20%.

Once started, display shows A.TUN with letters blinking in the rotating pattern. When auto tune stops, display will show process value. Do not perform any operations or settings before first stopping Auto Tune. Any alarms or other output is disabled during Auto Tune.

If “AUTO PID” was “DISABLED”, the display will show the following three submenus. This allows the user to manually enter values for Proportional, Reset and Rate terms corresponding to P, I, and D. It also can be used for auto PID for disabling unwanted parameter i.e. PI enter 0000 for rate.

PROPORTIONAL BAND SUBMENU:

Press d 30) Display flashes 1st digit of the previous P PRoP Proportional band value.

Press b & c 31) Press b and c buttons to enter a new “Proportional Band” value.

Press d 32) Display shows STRD stored message momentarily and then advances to REST only, if it was changed, otherwise press a to advance to REST Reset Setup Submenu.

Proportional band is in degrees of temperature or counts of process. Proportional band is defined, as the change in the instrument input to cause a 100% change in the controller output.

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Omega CNI8DV, CNI16D, CNI8C, CNI8DH, CNI32 manual Start Auto Tune PID, Proportional Band Submenu

CNI16, CNI32, CNI8DH, CNI8C, CNI16D specifications

The Omega CNI series, including models CNI8DV, CNI8, CNI8DH, CNI32, and CNI16, represents a cutting-edge line of sensors designed for various industrial applications. Known for their reliability and versatile functionality, these sensors play a crucial role in monitoring and controlling multiple parameters in different environments.

The CNI8DV model is equipped with dual voltage outputs, enabling flexibility in integration with various systems. This feature allows users to choose between standard and high voltage operating conditions, making it suitable for a wide range of applications. Its high precision and quick response times deliver accurate measurements, essential for critical processes where timing and accuracy are paramount.

The CNI8 model offers robust performance with an extensive measurement range. This model is particularly noteworthy for its advanced signal processing technology, which improves measurement stability and accuracy. It utilizes digital filtering and calibration techniques to enhance performance and ensure consistent output, minimizing the effects of environmental fluctuations.

In the CNI8DH variant, enhanced durability is a key characteristic. This model features a more robust housing that protects it from harsh environmental conditions. It is designed to withstand high humidity, dust, and varying temperatures, making it suitable for outdoor applications or environments where exposure to elements is a concern. It also includes real-time diagnostics to monitor its operational health, allowing for proactive maintenance.

The CNI32 model stands out with its higher measurement capacity and greater flexibility in configurations. This sensor can handle multiple input types, including temperature, pressure, and flow rates. Its modular design allows users to customize it for specific applications, making it ideal for industries ranging from manufacturing to energy production.

The CNI16 model is designed for standard applications requiring precision and reliability. Its compact size allows for easy installation in tight spaces, while still delivering high performance. Enhanced connectivity options support integration with various data acquisition systems and industrial networks, enabling seamless data collection and monitoring.

In summary, the Omega CNI series exemplifies state-of-the-art sensor technology, offering a range of features that cater to diverse industrial needs. From versatile voltage outputs in the CNI8DV to the rugged design of the CNI8DH, each model is engineered to provide accurate, reliable readings with the ability to withstand challenging conditions. Whether for monitoring environmental conditions or precise measurements in manufacturing processes, the CNI series continues to be a top choice for professionals seeking high-quality sensors.