A80, A80t, W80, W80t Operating Manual
28.08.2019
7
1.
Proper Use
is a highly dynamic temperature control system designed for
controlling the temperature of certain liquids in a closed, external system.
The temperature-controlled external system is attached to the protruding
pump connections on the rear of the
.
JULABO temperature control systems are not suitable for direct
temperature control of food or other items intended for human
consumption, pharmaceutical products, or medical products.
Direct temperature control means: The temperature-controlled object
has unprotected contact with the bath fluid.
1.1.
Description
•
In addition to the refrigeration unit, the main functional elements are
the heater, circulation pump, and control electronics. When used
with an external Pt100 control sensor, the auto-optimizing electronic
PID controller will automatically adjust to the requirements of the
external vessel.
•
The pump’s powerful output can be reduced for use with pressure-
sensitive vessels by altering the motor speed in four stages or by
controlling via pressure.
•
The refrigeration systems are cooled
- A80, A80t with air from the ambient surroundings
- W80, W80t with water.
•
The unit is operated via the TFT user interface.
•
Remote control through the digital RS232, USB, and ethernet
interfaces according to NAMUR enable advanced process control
without an additional interface card.
•
The high temperature cut-off is a safety device that is independent
from the control circuit. The cut-off temperature is adjustable and is
displayed on the TFT user interface.
•
The integrated programmer lets you store and retrieve setpoints and
times for eight different temperature profiles.
•
Interfaces available on the right side of the housing:
- SD card for datalogging
- USB host interface.
•
Analog interfaces:
- Alarm output for an external signal
- Ext. Pt100 connection for an external control
- Connection for JULABO pressure or flow sensor
•
An analog module is optionally available, it consists of:
A
STAND-BY input
for remote shutoff with an external switch.
REG+E-PROG connection
for specifying the setpoint with an
external analog setpoint device or programmer. Three analog
outputs for datalogging are also integrated.
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