Pressure Limits (Modular LC Quaternary Pump)

Sets the maximum and minimum pressure limits for the pump.

Max

Max is the maximum pressure limit at which the pump will switch itself off, protecting the analytical system against over-pressure.

Limit (G7104A and G7131A)

Flow rate	Pressure Limit
0.000 - 5.000 mL/min	1300 bar (18850 psi)

Limit (G7104C and G7131C)

Flow rate	Pressure Limit
0.000 - 5.000 mL/min	800 bar (11600 psi)

Limit (G4204A)

Flow Rate	Pressure Limit
0.000 – 10.000 mL/min	1200 bar (17400 psi) * * The pump automatically reduces the pressure if the flow exceeds 2 ml/min

Limits (G1311A/B/C, G5611A, G5654A, G7111A/B)

Flow Rate	Pressure Limit
flow rate ≤5 mL/min	G1311A/C, G5611A, G7111A: 400 bar (5800 psi) G1311B, G5654A, G7111B: 600 bar (8700 psi)
flow rate >5 mL/min	200 bar (2900 psi)

Min

Min is the minimum limit at which the pump will switch itself off, for example, if any solvent reservoir is empty. This prevents system damage caused by pumping air.

Limits: You can set the minimum pressure limit to any value between 0 and the upper pressure limit setting.

The minimum pressure limit is activated only if the pressure starts above the specified value and falls below it. It is not activated if the pressure starts below the specified value. For the system to create an error the limits must be exceeded for a few seconds.