TARE

Tare function is used for taking out a preset amount of process variable from the total reading e.g. if we are measuring weight of a certain product being put in a container but do not want the weight of the container to show on the display, then enter the weight of the container as tare value. The DP3600 unit will then automatically subtract the weight of the container from the total reading and display the weight of the product only.

Desired Tare is entered during SETUP procedure. Also, while entering Tare in SETUP, pushing the ‘TARE’ key will take the reading at that instant and store it as a new tare value.

DP3600 units also allow remote resetting of the TARE by using an external switch. This switch is connected between pins 13 and 14 on the rear connector. When ever the remote switch is activated, DP3600 will take the reading at that instant and store it as a tare value. As long as the switch is kept activated the unit will keep taking the reading as a new tare value.

For the remote switch to accept the reading as tare, the unit must be setup as such. This is done during the setup mode. Alternatively the same switch can be used to hold the display. Therefore, make sure that during setup when configuring tare/hold, the display must read 'RT TARE'.

LIMITS

Process Limits:

Displaying:

The LIMITS key is used for displaying Process Variable limits. Pushing the LIMITS key twice will briefly display PR LT1 (first push displays RATE) and then go on to show the process based limit 1 value. Each consecutive push there after will display ‘PR LT2’ and programmed limit 2 value, ‘PR LT3’ and its value, ‘PR LT4’ and its value. If limits 3 and 4 are configured as rate and deviation limits respectively, then the third push will display ‘rATE Lt’ followed by rate value and the fourth push will display ‘dEVn Lt’ followed by deviation limit value. The programming of process limits is done during setup procedure (look under SETUP).

Resetting:

Once energized, alarms can be reset in two different ways --- automatically or manually (non latching or latching). In non latching mode the alarm outputs will de-energize on their own when the process variable drops below the limit value. In the latching mode they stay energized even if the process variable drops below the limit. To reset the energized outputs in latching mode, first make the display indicate the limit that needs to be reset e.g. ‘PR LT2’, by pushing the ‘LIMITS’ key (as described above under ‘Displaying’). Next, while keeping the ‘LIMITS’ key pushed, go on to push the ‘RESET’ key. The respective alarm output will de-energize and the system will indicate so by displaying RLY RST. Selection of latching or non-latching mode for outputs is done during setup.

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Omega Engineering DP3600 user manual Tare, Process Limits
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DP3600 specifications

Omega Engineering has long been a trusted name in the realm of industrial instrumentation, and their DP3600 series has set a high standard in differential pressure measurement. The DP3600 is celebrated for its robustness and versatility, making it a reliable choice for a variety of applications across industries such as HVAC, water treatment, and chemical processing.

One of the standout features of the DP3600 is its advanced microprocessor-based technology. This enables highly accurate measurements and ensures that the device can effectively manage multiple pressure inputs. The DP3600 operates on a wide measurement range, accommodating both high and low differential pressure readings with exceptional precision. It is designed to handle pressures from -500 to +500 inHg, making it suitable for even the most demanding environments.

The device is characterized by its user-friendly interface, which includes a clear digital display that shows real-time readings. This feature not only enhances usability but also ensures that operators can quickly interpret data without extensive training. Furthermore, the DP3600 offers a variety of output options including analog and digital signals, allowing for seamless integration with existing systems.

Durability is another key characteristic of the DP3600. Constructed to endure harsh conditions, it boasts an IP65 rating for dust and water resistance, making it suitable for use in outdoor and high-moisture environments. The unit is also designed for easy installation and maintenance, which helps reduce downtime and operational costs.

Moreover, the DP3600 series includes built-in safety features, such as over-range protection, ensuring that the device remains operational even in extreme conditions. With options for various materials and configurations, users can customize the DP3600 to better fit their application's requirements.

In summary, the Omega Engineering DP3600 series is an advanced differential pressure device that excels in accuracy, versatility, and durability. Its microprocessor-driven capabilities, broad measurement range, and user-friendly interface make it a valuable tool for professionals seeking reliable pressure measurement solutions in challenging environments. With these features, the DP3600 continues to be a preferred choice for industries requiring precise monitoring and control of differential pressure.
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