6
3 Application
3.1 Type 202550
Description
The compact microprocessor indicator/controller, with 96mm x 48mm bezel
and plug-in controller module visualizes and controls variables in analytical
measurement (pH value, redox voltage, conductivity, chlorine, chlorine
dioxide, ozone and mA).
Inputs
The indicator has two analog and two logic inputs.
The first analog input is suitable for connecting a 0(4)—20 mA signal, which
can be provided by any type of transmitter (including 2-wire types). The input
signal is conditioned as determined by the configuration, and displayed.
The second analog input can be used to connect Pt100 or Pt1000 resistance
thermometers.
Calibration
procedure
One special feature of the instrument is that the calibration procedures for pH,
redox and conductivity are internally programmed. This permits the
connection of simple transmitters (without their own calibration facilities) to the
dTRANS Az 01. In this case, the indicator/controller has to be configured
accordingly.
Examples of simple transmitters:
- for pH
JUMO type 202701
- for redox voltage
JUMO type 202702
- for conductivity
JUMO type 202754/xx-xxx/263
Standard
signals
The dTRANS Az 01 is also suitable for the connection of transmitters that
produce a standard output signal. In this case, the dTRANS Az 01 must be
configured as a universal indicator.
Examples of JUMO transmitters with standard output signals:
- for dissolved oxygen
JUMO dTRANS O2 01
- for free chlorine, chlorine dioxide and ozone
JUMO Typ 202630
- JUMO pressure transmitters
Display
The instrument features two 4-digit 7-segment displays for indicating the main
variable (red) and the temperature (green). The temperature display is switched
off in the default setting. A separate temperature sensor (Pt100 or Pt1000) can
be connected to the second analog input. This can then be used to display the
temperature of the medium and, if required, monitor it by means of a limit
comparator (limit switch). During programming, the displays provide
comments on the inputs.
Outputs
The instrument has a maximum of 5 outputs
Out-
put
Stand-
ard
Description / configurable
Output
K1
yes
Controller / controller off, limit controller, pulse
width controller, pulse frequency controller,
modulating controller with P, PI, PD or PID
action
relay, make
