Waters 680 Automated Solvent Controller

The Waters 680 Automated Solvent Controller is a sophisticated microprocessor-based system that controls the flow rate of solvent and percentage delivered by each of pumps.

Specifications:
– Flow: 0 to ml/min in 0.01 ml/min increments for each operational pump (0-30 ml/min total for three pumps)
– Composition: 0 to 100% in 1% increments for each of three components – A, B and C
– Gradient Programs: 10 storable programs each with 10 segments
– Each segment allows simultaneous changes in total flow and composition of A, B or C in accordance with any of 11 different curves
– Timed Event Programs: 10 storable programs, each with 20 timed events
– Capable of controlling 7 external devices and an audible beeper
– Program Memory Protection: Programs stored in memory retained indefinitely without line power or batteries. Stored programs may be modified or deleted by operator
– Low Pressure Limit: Settable from 0 to 5950 psi in 1 psi increments. Low pressure for more than 90 sec will cause pumps to stop.
– High Pressure Line: Settable from 51-6000 psi in 1 psi increments. High pressure for more than 2 sec will cause pumps to stop.
– Compressibility Compensation: Settable from 0 to 40 % in 0.1% increments for each of three components
– Environmental Specifications:
  Temperature Operating Range: 5 ° to 40 ° C
  Storage Range: -45 ° to 65 ° C
  Humidity Operating Range: 20% to 95% RH,
  Storage Range 0% to 100% RH (non-condensing)