Calibration Preparation, Calibration Mode Functions

DPG3500, DPG5500, and DPG5600 Series

CAUTION: Calibration Precautions

Install or remove gauge using wrench on hex fitting only. Do not attempt to tighten or loosen by turning housing or any other part of the gauge.

See gauge rear label for pressure range!

Use fittings appropriate for the pressure range of the gauge. The gauge range is indicated on the rear label and is indicated on the display during power-up.

Do not apply vacuum to gauges not designed for vacuum operation.

Due to the hardness of 316 stainless steel, it is recommended that a thread sealant be used to ensure leak-free operation.

NEVER insert objects into the gauge port or blow out with compressed air. Permanent damage not covered by warranty will result to the sensor.

These products do not contain user serviceable parts. Contact Omega Engineering for calibration, service, or refurbishment.

NOTE:

1.Calibration Preparation

a.Calibration should only be performed by qualified individuals using appropriate calibration standards and procedures.

b.The calibration equipment should be at least four times more accurate than the gauge being calibrated.

c.Remove the screws on the back of the unit and remove cover.

d.It is good practice to install fresh batteries before calibrating battery- powered gauges.

e.Allow the gauge to equalize to normal room temperature before calibration.

2.Entering the Calibration Mode

a.Note the locations of the two internal calibration pushbuttons marked UP and DOWN. These buttons are disabled unless the gauge is in calibration mode.

b.With the gauge off, press and hold the DOWN calibration button, and also press the front button to power up the gauge in calibration mode.

DOWNUP

3.Calibration Mode Functions

a.The display first indicates the gauge’s full-scale pressure range, tests all display segments, and then indicates CAL to indicate that the gauge is in the calibration mode. Release all pushbuttons.

b.The display will then indicate the current pressure reading, updating approximately 3 times per second. The gauge will remain in the calibration mode until powered down or reset manually. While in the calibration mode, the shutoff timer, One Touch Zero (gauge reference models only), Min/Max (for applicable models) are all disabled, and the calibration pushbuttons are active.

c.Each press of the UP or DOWN button makes a small correction, which may not always be indicated on the digital display. Press and hold the pushbutton for one second or longer to make larger continuous corrections. The display of the gauge being calibrated is adjusted to match the calibrator’s setting or readout.

d.If the battery pack is unplugged or the power removed during calibration, calibration settings will not be saved.

4.Gauge Reference Gauges (3 Points)

a.With the gauge port open to atmosphere, the character display will alternate between ZERO and CAL. Press the UP and DOWN buttons to obtain a display indication of zero.

b.Apply full-scale pressure. The character display will alternate between +SPAN and CAL. Press the UP and DOWN buttons to obtain a display indication equal to full-scale pressure.

c.Apply 50% of full-scale pressure. The character display will alternate between +MID and CAL. Press the UP and DOWN buttons to obtain a display indication equal to 50% of full-scale pressure.

5.Absolute Reference Gauges (3 Points)

a.Apply full vacuum to the gauge. The vacuum pump must be able to produce a vacuum of 10 microns (0.01 torr or 10 millitorr) or lower. The character display will alternate between ZERO and CAL. Press the UP and DOWN buttons to obtain a display indication of zero.

b.Apply full-scale pressure. The character display will alternate between +SPAN and CAL. Press the UP and DOWN buttons to obtain a display indication equal to full-scale pressure.

c.Apply 50% of full-scale pressure. The character display will alternate between +MID and CAL. Press the UP and DOWN buttons to obtain a display indication equal to 50% of full-scale pressure.

6.Bipolar (±) and –30inHg/15psig Compound Ranges (5 Points)

a.With the gauge port open to atmosphere, the character display will alternate between ZERO and CAL. Press the UP and DOWN buttons to obtain a display indication of zero.

b.Apply full-scale positive pressure. The character display will alternate between +SPAN and CAL. Press the UP and DOWN buttons to obtain a display indication equal to full-scale pressure.

c.Apply 50% of full-scale positive pressure. The character display will alternate between +MID and CAL. Press the UP and DOWN buttons to obtain a display indication equal to 50% of full-scale pressure.

d.Apply full vacuum. The character display will alternate between -SPAN and CAL. Press the UP and DOWN buttons to obtain a display indication equal to the full vacuum reading.

e.Apply 50% of the full-scale vacuum range (for example, –7.4 psi for a ±15 psi gauge). The character display will alternate between -MID and CAL. Press the UP and DOWN buttons to obtain a display indication equal to 50% of full-scale vacuum.

7.–30inHg/100psig and –30inHg/200psig Compound (4 Points)

a.With the gauge port open to atmosphere, the character display will alternate between ZERO and CAL. Press the UP and DOWN buttons to obtain a display indication of zero.

b.Apply full-scale positive pressure. The character display will alternate between +SPAN and CAL. Press the UP and DOWN buttons to obtain a display indication equal to full-scale pressure.

d.Apply full vacuum. The character display will alternate between -SPAN and CAL. Press the UP and DOWN buttons to obtain a display indication equal to the full vacuum reading.

8.Exit Calibration Mode and Verify Calibration

a.Battery-powered gauges: Exit the calibration mode and save the calibration data by pressing and holding the front button until the display indicates OFF.

b.Verify pressure indications at 0%, 25%, 50%, 75%, and 100% of full scale.

c.Replace the rear cover and screws, taking care not to pinch the power leads between the case and the rear cover.

DPG5500, DPG3500, DPG5600 specifications

The Omega DPG3500, DPG5600, and DPG5500 are advanced digital pressure gauges known for their accuracy, durability, and user-friendly interfaces. These instruments are designed to provide precise pressure measurements in various industrial applications, making them essential tools for engineers and technicians.

The DPG3500 is equipped with a high-resolution display that offers clear readings, making it easy to monitor pressure in real time. It features a robust housing that ensures resistance to harsh environmental conditions, such as dust and moisture, making it suitable for field use. The gauge is designed with a precision sensor that guarantees excellent linearity and repeatability, which are critical for accurate measurements.

In contrast, the DPG5600 incorporates more advanced features, such as an enhanced data logging capability. This allows users to record measurements over time, facilitating trend analysis and troubleshooting in processes where pressure fluctuations may indicate potential issues. The DPG5600 also supports multiple pressure units, catering to various user preferences and industry standards. The intuitive menu navigation makes setting up and configuring the gauge quick and straightforward, ensuring minimal downtime when switching tasks.

The DPG5500 stands out with its integrated Bluetooth connectivity, enabling users to wirelessly transmit data to smartphones or computers. This feature allows for real-time monitoring and easy sharing of data among team members. Additionally, the DPG5500 boasts a rechargeable battery, providing extended operational life without the hassle of frequent battery replacements. The LCD display presents not only the pressure reading but also important status indicators, such as battery level and connectivity status.

All three models utilize cutting-edge sensor technologies, ensuring high accuracy across a wide range of pressures. They are engineered to handle dynamic pressures, making them ideal for use in systems with rapidly changing pressure levels. The gauges also offer various customization options, including programmable set points, alarms, and differential pressure measurement capabilities.

In summary, the Omega DPG3500, DPG5600, and DPG5500 are versatile digital pressure gauges that cater to diverse industrial needs. Each model combines advanced technologies, robust construction, and user-centric features, making them reliable choices for professionals who require precise and consistent pressure measurements. Whether for basic monitoring or complex data analysis, these gauges enhance operational efficiency and facilitate informed decision-making in various industrial environments.