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General| Category | Measuring Instruments |
|---|---|
| Manufacturer | Mesa Labs |
| Series | Definer 220 Series |
| Battery Life | 8 hours |
| Operating Humidity | non-condensing |
| Power Supply | AC Adapter or Battery |
Charging, installing, and monitoring the Definer's battery.
Procedure for removing and recycling the Definer's sealed lead acid battery.
Turning your Definer on and off using the power button.
Attaching tubing to the appropriate Definer ports for calibration.
Understanding the components and indicators on the Definer's LCD screen.
Using directional arrows and the Enter button to navigate through menus.
Customizing Definer settings through the Setup menu and its submenus.
Configuring flow reading type, number of averages, and sensor factor.
Setting units for flow, pressure, and temperature.
Setting the current time and selecting the time format (AM/PM, 24H).
Setting the current date and selecting the date format.
Setting read default mode and factory default settings.
Adjusting display magnification for flow, temperature, and pressure.
Configuring power save mode and backlight settings.
Performing a leak test to verify internal integrity of the instrument.
Displaying Definer model, serial number, and firmware revision.
Recommendations for accurate gas flow readings and minimizing thermal effects.
Performing a single flow measurement by pressing the Enter button.
Performing a series of measurements until a preset number is reached.
Performing sequential measurements that repeat until manually stopped.
Optional 5-volt output proportional to flow rate for external voltage measurement.
Downloading and using DryCal Pro software for data capture and export.
Procedures for upgrading Definer firmware via the Data Port using DryCal Pro.
Troubleshooting steps if the Definer fails to power on, checking battery charge.
Performing a hard reset if the Definer buttons do not respond.
Ensuring correct port connections for pressure or suction and checking tubing.
Tips for ensuring tight fittings and short tubing to prevent leaks.
Steps to take when the leak test fails, checking the leak test cap.
Best practices for connecting the Definer to a filter medium for pump calibration.
Understanding temperature increases during battery charging.
Causes for the piston failing to return, including battery and environmental factors.
Explanation of dead volume and its impact on measurement accuracy.
Definition and use of sensor factor for scaling calibration readings.
Explanation of volumetric and standardized flow rate measurements.
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