Julabo Presto Series, Operating Manual, Page: 67 / 121

USER INTERFACE
2.13.2018
67
Jack on the rear
JULABO Sensor
Pressure / Flow
Pin Signal
1 Reserved, do not use
2 Reserved, do not use
3 4…20 mA
4 GND (0 V)
Attention
If using an external pressure sensor, the unit and the application
must be at the same height.
Accessories:
Order No. Description
8980771 External pressure sensor M24x1.5 male
8980772 External pressure sensor M30x1.5 male
8980773 External pressure sensor M38x1.5 male
Flow sensors appropriate for :
8981021 M+R adapter M24x1.5 external with Pt100
8981022 M+R adapter M30x1.5 external with Pt100
8981023 M+R adapter M38x1.5 external with Pt100
10.5.3. Bypass Control with CAN Option and JULABO Pressure / Flow Sensor
Bypass control is required if small mass
flow rates of the bath fluid should ensure
high power transfer.
The flow sensor is connected to the Julabo
pressure/flow socket for bypass control.
Control is realized via a CAN bus
connection. The CAN interface module is
provided in PRESTO devices instead of
the electronics module with analog
connections.
Bypass control principle
The bypass connection on the CAN bus is
marked with the
icon on the top left
(at the JULABO lettering).
To use the bypass, an external flow sensor
must be connected via the JULABO
pressure/flow socket.
Go to the “Analog Interfaces” menu.