Recirculating coolers
11
Temperature selection digital (keypad)
Resolution °C 0.1
MULTI-DISPLAY indications LED + LED
Resolution °C 0.1
Display accuracy % 0.5
Temperature stability °C ±0.2
Temperature control on/off
Control ratio for feed/return
flow temperature, adjustable % 0 ... 100
Temperature sensor (number) PTC (3)
Level indication spy-glass
Error message indication LED
Electrical connections:
Computer interface RS 232
Stand-by input conforming to Namur recommendations
Alarm output potential-free
Return flow safety device V 230
External sensor (4-lead technique) Pt100
Programmer V/mA 0 to 10 / 0 to 24
Temperature recorder (0 V = 0 °C) mV/K 10 (RI = 100 Ohms)
Safety installations
(adjustable via LED):
High temperature protection °C -25 ... 85
Low temperature protection °C -25 ... 85
Low liquid level protection float switch
Classification according to DIN 12876-1 III
Overload protection for pump motor contactor
Overload protection for cooling compressor contactor
Alarm signal optical + audible
Environmental conditions according to IEC 61 010-1:
Use only indoor.
Altitude up to 2000 m - normal zero.
Ambient temperature: +5 ... +40 °C
Air humidity:
Max. rel. humidity 80 % for temperatures up to +31 °C,
linear decrease down to 50 % relative humidity at a temperature of +40 °C
Max. mains fluctuations of ±10 % are permissible.
The unit corresponds to Class I
Overvoltage category II
Pollution degree 2
Caution:
The unit is not for use in explosive atmosphere
Standards for interference resistance 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).
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