JULABO Magnum 91 Temperature System - Manual (Page 12)

Operator responsibility – Safety recommendations
12
Electrical connections:
Computer interface RS232 / RS485
Programmer input -100 °C to 400 °C = 0 to 10 V or 0 to 20 mA or 4 to 20 mA
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 4-0 V DC / max. 25 mA
External measurement and control sensor Pt100, 4-lead technique
Safety installations and warning functions:
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
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)
Environmental conditions according to IEC 61 010-1:
Use indoors only.
Altitude up to 2000 m - normal zero.
Ambient temperature: see Technical specifications
Humidity:
Max. relative humidity 80% for temperatures up to +31 °C,
linear decrease down to 50% relative humidity at a temperature of +40 °C
The unit corresponds to Class I
Overvoltage category II
Pollution degree 2
Caution:
The unit is not suitable for use in explosive environment
EMC requirements according to EN 61326-1
This unit is an ISM device classified in Group 1 (using high frequency for internal purposes), Class A (industrial
and commercial range).