Agilent Technologies 1100 Series - Hydraulic Path Overview

1100 Series Nano Pump Service Manual 195
Introduction to the Nano Pump 5
Hydraulic Path Overview
The nano pump is based on the Agilent 1100 binary pump, and performs all
the functions necessary for a nano flow solvent delivery system. Basically,
these functions are:
• Low Pressure Metering and High Pressure Delivery
• Solvent Compressibility Compensation
• Variable Stroke Volume
• Column Flow Measurement and Control
Low pressure solvent metering, and high pressure solvent delivery, are
accomplished by two pump channels, each capable of delivering a maximum of
2.5 ml/min flow at up to 400 bar pressure.
Figure 37 Overview of the Nano Pump
NPM boar
d
Pump drive
Outlet valve
Leak sensor
Power supply
Active inlet valve
Damper
Fan
Pump head A
Solvent selection valve
Pump head
B
Solvent selection valve
Flow senso
r