Retrotech DM-2A 用户手册

Retrotec Energy Innovations, Ltd.

DM-2A Mark II   2008-02-22

For more information on selecting the configuration options available to each of the available 

modes, see Choosing Custom Configuration Options in Section 5, Using Advanced Configurations.

This option enables you to define the slope of the line along which @-mode extrapolations 

will be calculated. Generally speaking, houses use a value of 0.65 and duct-work uses a value of 
0.60. Acceptable values are 0.5 to 1.0. When enabled, the @-mode feature enables you to predict 
what your parameter would be at a given pressure, without the need to physically reach that 
pressure. For example, you can the @-mode feature to predict the flow that would be required 
to pressurize a building to 50 Pa, even if the equipment in use is only capable of achieving a 
pressure of 35 Pa.

The Power Down feature (shown next) is designed to maximize battery power by enabling your 

DM-2A mark II gauge to automatically turn itself off when it has been inactive for set time period. 
This feature is set in hours within a range between 0 and 255 hours. Applying a 0 value will 
disable the Power Down feature, meaning the DM-2 will never automatically shut down. 

DM-2A Mark II Dual-Channel Pressure Gauge