Kendro HERAcell 150, Operating Instructions Manual

Page: 104 / 251

BETRIEBSANLEITUNG
HERAline
Seite 13 von 14
Datum: 13.04.04
Bearbeiter / Abteilung: Identnummer:
interner Vermerk
Detlef Dornseiff / DT 50 076 300
50076300 Index
A.doc
11. Description for HERAcell 150 and HERAcell 240 (O2 – models)
The HERAline analog interface converts the digital values of temperature and CO2
from the RS 232 interface of the incubator in 4 analog signals, having 4....20 mA, by
using a 4 channel D/A converter together with a microprocessor. The resolution of
the D/A conversation is 10 bit for each channel, which means totally 1024 steps.
Since the RS 232 will be used for the HERAline interface, it will not be possible to
connect an additional computer to the RS 232 interface of the incubator.
The analog outputs are connected to a female 15 pole D-Sub connector, which is
located on the analog interface. External devices can be connected to the interface
by using the standart RGB/S video cable which commands with the HERAline
interface.
The analog output signals are:
Red „R“ Actual temperature
incubation mode
Actual temperature
desinfection mode
0,16 mA/°C
0,16 mA/°C
0...55 °C
0...90°C
=
=
4...12,8 mA
4...18,4 mA
Green „G“ Actual CO2 –
concentration
0,8 mA/% 0...20% CO2 = 4...20 mA
Blue „B“ Actual O2 –
concentra
0,16 mA/%
0,16 mA/%
1...21 % O2
5...90 % O2
=
=
4,16...7,36 mA
4,8...18,4 mA
Black „S“ Not connected
It will be possible to connect the external devices directly to a male 15 pole D-Sub
connector which fits to the female output connector of the incubator.
The outputs are connected to:
Actual temperature Pin 1 (+)
Actual CO2 Pin 2 (+)
Set temperature Pin 3 (+)
Set CO2 Pin 13 (+)
Ground (-) Pin 4,6,7,10 und 11 (-)