USER'S MANUAL - DATAQ Instruments
USER'S MANUAL - DATAQ Instruments
USER'S MANUAL - DATAQ Instruments
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
CHAPTER 2 Checks and Preparation<br />
2.5 Connecting the Signal Input Cables<br />
This section describes how to connect the signal input cables.<br />
Terminal Configuration and Signal Types<br />
<br />
<br />
<br />
<br />
<br />
Connection diagram<br />
DC voltage input<br />
Thermocouple input<br />
Voltage input<br />
Compensationcopper wire<br />
Resistance temperature detector input<br />
A<br />
Current input<br />
B<br />
Direct current<br />
b<br />
b<br />
Lead wire resistance should<br />
be 10Ω or less per wire,<br />
three wires need to be same length.<br />
Shunt resister<br />
Ex: The current is converted to the voltage in<br />
the shunt register.<br />
For 4 to 20mA current input, installing 250<br />
ohms (0.1%) resister for converting 1 to 5V.<br />
* 250 ohms shunt register is the option B551.<br />
+ ......................................High-voltage terminal (terminal for high-voltage input signals)<br />
– ......................................Low-voltage terminal (terminal for low-voltage input signals)<br />
b ......................................Dedicated terminal when connecting resistance temperature detector<br />
* Resistance temperature detector input terminals A (+) and B (-) are isolated within each channel. Terminal b is shorted<br />
within all channels.<br />
Item<br />
Description<br />
Input configuration<br />
Isolated input, scanning<br />
Analog voltage 20, 50, 100, 200, 500 mV/F.S.; 1, 2, 5, 10, 20, 50 V/F.S.; 1-5V<br />
Thermocouples K, J, E, T, R, S, B, N, W (WRe 5-26)<br />
Resistance temperature detector PT100, JPT100, PT1000 (IEC751)<br />
A/D resolution<br />
16-bit (Effective resolution: About 1/40,000 of the +/- range)<br />
Filter Off, 2, 5, 10, 20, 40<br />
Filter operation is on a moving average basis.<br />
The average value of the set sampling count is used.<br />
If the sample interval exceeds 30 seconds, the average value of data obtained<br />
in a sub-sample (30 seconds) is used.<br />
2−6