Waters Prep Series Installation And Maintenance Manual page 45

Pressure output
The Pressure output monitors pump pressure during ramp testing and other
service procedures. It also monitors how different solvents affect pressure
during various phases of gradient operation. The full scale range of the
pressure output is +10 mV.
Plotting
1. Connect the leads at one end of the event cable (Startup Kit) to the
Pressure+ and Pressure– terminals (see the
connections to the integrator or chart recorder" on page
2. Connect the leads at the other end of the cable to the corresponding +/–
terminals for the second pen on the integrator or recorder.
External devices requiring contact closure or TTL switches
To connect external devices requiring contact closure or TTL switches:
1. Connect one lead from a two-conductor cable between the device and
controller to a Gnd terminal on the controller. Connect the
corresponding lead at the other end of that cable to a ground terminal on
the device.
2. Connect the other leads on the cable to an available switch (S1 to S4)
and the input terminal on the device.
figure "Pressure and chart
2-10).
Assembling the system 2-11