Xylem H-3521 - Manual (Page 27)

H-3521
Simple RS-232 Menu Interface 4-5
4.4 Sensor Mode Options Menu
This setup menu is for viewing and editing the H-3521 power modes and other mode enables.
4.4.1 P - Power Mode
This option is for changing the H-3521 power mode. The following prompt at the bottom
of the menu.
Enter Option >Power Mode Value(0-4) [ ]
Enter in the desired power mode.
Power Modes:
0 = Sleep between measurements
1 = Sleep with sensor bias On (reserved for factory use)
2 = Sleep with sensor bias and reference On (reserved for factory use)
3 = Wait mode. Make measurements and update all outputs based on the measure rate
4 = Wait mode. Power profile for Modbus
The menu will refresh with the new power mode.
4.4.2 F - Fast Mode
This option is the enable for putting the H-3521 in a special mode called Fast Mode. Fast
Mode causes the H-3521 to complete measurements in 1 second vs. the normal mode
which takes about 6 seconds. This mode is not recommended because the atmospheric
pressure and temperature values are only updated every 3 minutes and the H-3521 does