DT 45200 - Pt Temperature Transmitter
The Pt Temperature Transmitter DT 45200 is used for measure industrial process signals. It converts Pt sensor signals to isolated standard signals. Due to the easy configuration via USB interface the Transmitter is suitable for flexible use. The high reliability and the protective separation are further features, which ensure a safe system operation.
The File menu
Using the File menu, you can load, save and document your configurations, either as a printout or as a PDF file.
The Device menu
In the device menu, you can transfer the configuration to the connected device or load it from the device.
In addition, you can open a diagnostic window to view the current measured values and status of the device.
The Settings menu
In "Settings", select the programme language.
The Help menu
In the help menu you can access the online help. You can also press [F1] at any time to call up the help for the selected element.
"About DRAGOset" provides you with information on the program.
Data record load/save
Data records can be saved in files and transmitted to the device or transmitter. Likewise, data records can load from the device or file into DRAGOset.
Measuring point number
For a printout or PDF documentation of the device settings, you can assign a measuring point number (Tag) to the device or transmitter. The number can be saved in the device, so the device every time indicates each reading with his Measuring Point Number.
The Measuring Point Number can have up to 16 characters, so the code is according to DIN EN 60617, and EN ISO 10628 (previously DIN 28004) in the device.
Sensor and compensation
Under Sensor Type, select the sensor you are connecting to the transmitter.
The connector adjusts the connection that you make.
|4-wire:||Connection with 4 wires, it means there are separate
lines for the sensor current and for measuring.
|3-wire:||It is important for a 3-wire connection, that all wires
have the same cable cross section. The voltage drop
is detected only on one side of the sensor and it is
assumed that the wire on the other side produces
the same voltage drop.
|2-wire:||In the 2-wire measurement, the lead resistances is
added to the measured sensor resistance. It has to
be as short as possible leads. You can compensate
the line resistance manually when you specify the
device, the sum of the lead resistances.
Here you can set the desired measurement beginning and end of the measurement. The span, ie the area between the beginning and the end, shall not be less then minimum margin (see table). The possible settings are based on the operating temperature range of the sensors:
|Sensor||Measurement range||min. Span|
|Pt 100, Pt 200, Pt 500, Pt 1000||-200 ... +850 °C||25 K|
|Pt 2000||-200 ... +400°C||25 K|
|JPt 50||-200 ... +650 °C||25 K|
|JPt 100||-200 ... +510 °C||25 K|
Output type and characteristics
At the output, there are 4 common standard signal ranges available:
0 to 20 mA, 0 to 10 V, 4 to 20 mA, 0 to 5 V.
The selected measurement range is linearly mapped to the output range.
On the rising characteristic the begin of measuring range corresponds to the 0/4 mA or 0 V, the end of measuring range to the 20 mA or 5/10 V. The falling characteristic reverses the course. The transfer function of the converter is shown graphically in DRAGOset.
The error signalisation defines whether errors will be left the output range. In this case, the output signal jumps to 22 mA, 11 V, 11 mA or 5.5 V, depending on the output selection.
Alternatively, the setting 0 mA, 2 mA, 4 mA or 0 V, 1 V, 2 V be chosen to signal the error, the output will remain in the range of measured values. This can be useful for example at a PLC input, that cannot handle signals out of range, the detection of the error then must be in the PLC.
|over range||in range|
|output type||output range||error signal||output range||error signal|
|0 ... 20 mA||0.0 ... 20.5 mA||22.0 mA||0,0 ... 20.0 mA||0.0 mA|
|4 ... 20 mA||3.8 ... 20.5 mA||22.0 mA||4,0 ... 20.0 mA||4.0 mA|
|0 ... 10 V||0.0 ... 10.25 V||11.0 V||0,0 ... 10.0 V||0.0 V|
|0 ... 5 V||0.0 ... 5.125 V||5.5 V||0,0 ... 5.0 V||0.0 V|
DRAGOset calculates from your inputs the correct DIP switch programming. This image can also be found in the PDF documentation and the printout again.
If DRAGOset is not connected with the cable to the transmitter, you can transfer the switch settings manually to the DIP switches of the transmitter. With the DIP switches only prefered default settings are possible.
If your configuration is not available as a DIP switch setting, you can program the settings using DRAGOset via the USB interface into the transmitter. The DIP switches S1-1 to S1-3 must be set to ON (PC mode).
With the menu item "Device | Diagnostics ..." call to a diagnostic screen. In this window, you get an overview of the current measured values and messages of the transmitter.
This requires an online connection to the transmitter.
Simulation of input and output signals, commissioning function
With the menu item "Device | Simulation" call to a simulation screen of the device. In the simulation input and output values can be simulated.
In addition, there is the commissioning function to check the following circuit parts with the complete measuring range. The commissioning function dynamical changes the output value. The output slowly sweeps over the complete measurement range, from the begin to the end value of the output range. The signal at 0 %, 50 % and 100 % of the range inserts a pause of a few seconds. It is possible to adjust the measurement range in this check.
When you leave the simulator window, the simulation output remains active, if you do not switch off before. As a reminder, therefore, the following window appears:
Wiring of Terminals
Depending on the selected sensor type and compensation changes the wiring of the transmitter. On this graph, you can see how the transmitter should be connected in this mode. If you move your mouse over the image of the transmitter, the terminal numbers are displayed.
DRAGOset shows the transfer function of the transmitter at the specified settings. You can see exactly the output value corresponding to the input signals. If you move your mouse over the curve, the input and output value is displayed depending on the position of the mouse pointer.