The CFI 100 series instruments are extremely rugged and versatile flow indicators with 4-20mA or 0-5V input. These indicators can be used for a wide variety of applications where accuracy and dependability are essential. Input linearization is possible for non-linear process variables. These instruments can be factory set for measuring 4-20mA currents or 0-5VDC or 0-10VDC. The 4-20mA models have a drop of 2.4 volts maximum. In addition, all these instruments are field programmable and have nonvolatile backup memory that does not need cumbersome batteries. These instruments also have the capability to switch on relay(s) based on user settings. These outputs can be used for process set points and alarms, and for controlling pumps..