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Defender
User Manual
500 Series
Driving a Higher Standard
in Flow Measurement
SM

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Table of Contents
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Summarization of Contents

1.0 Introduction
Your Defender
Lists the components included with the Defender device.
2.0 Operation
2.1 Battery
Details on charging, installing, and monitoring the Defender battery.
2.2 Activation
Instructions for turning the Defender on and off.
2.3 Connections
How to attach the Defender to a device for calibration.
2.4 Display Screen
Explanation of the Defender's screen components and navigation.
2.5 Menu Navigation
Guidance on moving through the Defender's operational menus.
2.6 Set-up
Customizing Defender settings via the Setup menu.
2.7 Measurements
Steps for taking gas flow readings, including charging and connection.
2.8 Single Measurement
Procedure for taking a single gas flow measurement.
2.9 Burst Measurement
How to perform sequential measurements until a preset number is met.
2.10 Continuous Measurement
Method for performing repeating measurements until stopped by the user.
3.0 Data Port
3.1 Optimizer Software
Details on using Bios Optimizer Collect light and software requirements.
3.2 SKC CalCheckĀ® Interface
Setting up the Defender to calibrate SKC pumps.
3.3 Defender Firmware Upgrades
How and where to obtain Defender firmware upgrades.
10.0 Troubleshooting
Why won't my Defender turn on?
Troubleshooting steps for when the Defender fails to power on.
My Defender won't respond to push-button commands.
Procedure for a hard reset if the Defender is unresponsive.
I'm not sure I have my Defender connected properly.
Checks for correct connection of flow source to Defender ports.
How do I protect against leaks?
Ensuring tight fittings and short tubing for leak-free operation.
What do I do when my leak test fails?
Steps to take if the Defender's leak test fails.
What's the best way to connect to the filter medium?
Recommended connection method for calibrating sampling pumps.
Why am I experiencing a temperature increase in my Defender 520?
Explains potential causes for temperature rise during operation.
Why doesn't my piston return to the bottom of the cell?
Identifies causes for piston not returning to the bottom of the cell.
What is Dead Volume?
Defines Dead Volume and its impact on accuracy.

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