The 3 Range Switch Module is a circuit board with a 3 position rotary switch. This option allows the user to select which range to view, and to set for alarm/control function. The 3RE may be configured - via select switches - to disable or stop the alarm/control function from operating when changing ranges. The 3RE will function with all Conductivity/TDS and Resistivity models, analog or digital.
NOTE: the setpoint(s) are NOT separately adjustable for each range.
It is available in multipliers of (10) only.
Example #1 - Conductivity/TDS: 758II-117 with 3RE = 500 uS (X1) w/ 5000 uS (X10) & 50 mS (X100) additional ranges.
Example #2 - Resistivity: 753II-11 with 3RE = 20Mohm (X1) w/ 2Mohm (X.1) & 200Kohm (X.01) additional ranges.
As shipped from the factory, the number (1) Range position is the primary or the alarm/control position while the other positions are monitoring ONLY. In other words, while in the #2 (X.1) or #3 (X.01) position the alarm/controller is disabled. In the above example #2 the 20Mohm (X1) is the primary or alarm/control range.