JULABO LH 85 High Dynamic Temperature System - Manual (Page 12)

Operator responsibility – Safety recommendations
12
Temperature selection digital
via Removable control module RD indication on DIALOG-Display (LCD)
remote control via personal computer indication on monitor
Temperature indication
VFD-Info-Display
DIALOG-DISPLAY (LCD)
Resolution K 0.01 from -9.99 °C to +249.99 °C
Pump pressure display on VFD-Info-Display in five grades
Liquid level display on VFD-Info-Display in five grades
Absolute Temperature Calibration
(ATC1)
K ±3
(ATC2) K ±9
Temperature control ICC - Intelligent Cascade Control, self-optimizing
Cascade, parameter can be called-in and modified
Working temperature sensor Pt 100
Safety temperature sensor Pt 100
Electrical connections:
Computer interface
RS232 or RS485
Programmer input -100 °C to 400 °C = 0 to 10 V or 0 to 20 mA or 4 to 20 mA
Temperature recorder outputs 0 to 10 V (0 V = -100 °C, 10 V = 400 °C)
0 to 20 mA (0 mA = -100 °C, 20 mA = 400 °C)
4 to 20 mA (4 mA = -100 °C, 20 mA = 400 °C)
Stand-by input
External alarm device
24-0 V DC / max. 25 mA
External measurement and control sensor Pt100, 4-lead technique
Control connector (10) Output voltage: 230 V
 / max. 0.1 A
S a f e t y i n s t a l l a t i o n s a c c o r d i n g t o I E C 6 1 0 1 0 - 2 - 0 1 0 :
Excess temperature protection >TANK< adjustable from 0 °C ... 320 °C
Excess temperature protection >RES< adjustable from 0 °C ... 220 °C
Low level protection float switch
Liquid level display optical, 5-graded
Classification according to DIN 12876-1 class III FL
Supplementary safety installations
High temperature warning function optical + audible (in intervals)
Low temperature warning function optical + audible (in intervals)
Supervision of the working sensor plausibility control
Reciprocal sensor monitoring between
working and safety sensors
difference >50 K
Alarm indication optical + audible (permanent)