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MAXIM Installation Instructions
© Mass Electronics Pty Ltd 2011Chapter 2 – Mechanical Information
2-2.3.1 VAVMax Dierential Pressure Input
The Dierential Pressure Input is only available on the VAVMax (VM01) controllers. It is used to
measure and respond to changes in air velocity pressure, which is determined by how the VAVMax
controller has been configured. The pressure sensor is factory calibrated for optimum performance
and is an extremely sensitive electromechanical device. Therefore the following guidelines should be
observed to prevent irreparable damage to the pressure sensor:
• Do NOT apply pressure from sources other than a pitot tube
• Do NOT apply excessive static or dierential pressure when connecting or disconnecting air supply
hoses to the VAVMax controller
• Do NOT drop the VAVMax controller
Listed below are the general operational parameters for the Dierential Pressure Input:
• 3000 Pa maximum static operating pressure
• 0 to +250 Pa dierential operating pressure
• -10 to +300 Pa maximum rated dierential pressure
• Accuracy rate of ±5FS
• Only non-corrosive gases are to be used
Figure 2-4: MiniMAX, MicroMAX, VAVMax and IG01 Controller Dimensions
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