DT1012 IP
20221107-V0
7
3.3. Principle of operation
Area of application
A Pt100 / Pt500 / Pt1000 temperature sensor, linear resistor or
potentiometer can be connected to the input of the DT1012 IP…
Temperature / Resistance / Potentiometer Transmitter.
When a Pt temperature sensor is connected, the output signal is
proportional to the measured temperature, in the case of resistance,
to the measured resistance, in the case of a potentiometer, to the
position of the potentiometer.
The output signal can be current in the range 4-20 mA (passive
output, external power supply required).
The instrument has three-way separation, that is: the input, output and
power supply are galvanically independent from each other.
Sensors / transmitters can be connected to the input with 2 / 3 / 4
wires. In case of 3 / 4 wire connection, the resistance of the
connecting wires does not affect the measurement.
The instrument can be scaled, and any input signal range can be
assigned to the output signal range.
Scaling, selection of the output signal level, signal averaging, etc., are
done via USB port.
The configuration program running on the PC and the USB cable are
included with the instrument.
The transmission characteristics of the transmitter are exceptionally
good: the error of the output signal < ±0.1 °C, the temperature factor
< ±20 ppm / °C typically.
There are three types depending on the measuring range:
•
DT1012 IP Pt100
measuring range: Pt 100 / 0-400 ohm
•
DT1012 IP Pt500
measuring range: Pt 500 / 0-4000 ohm
•
DT1012 IP Pt1000
measuring range: Pt 1000 / 0-4000 ohm
(Ptxx measure range: -200 - +800 °C)
There are two type of power supply:
•
DT1012 IP...
24 VDC,
•
DT1012 IP... PS 230 V AC/DC
Configuration from the PC:
The input and output characteristics can be freely configured from a
PC via a USB port.
The PC program required for configuration is included with the
instrument and can be downloaded from the www.datcon.eu website.
The USB interface is separated from the output of the instrument and
the power supply, but not from its input, so the PC can only be
connected to the instrument under operating conditions with due care.
The instrument is also powered by the USB port, so it is sufficient to
connect the USB cable for configuration (in this case, the analog
output does not work).
