Multi-Parameter Monitoring and Control Instrument can be used with various sensors and transmitters to perform cyclic inspection, alarm control, transmission output, data acquisition, and communication for multiple industrial process parameters such as temperature, pressure, liquid level, flow, weight, current, and voltage.
Adopting electronic technology, it features a digital and more intelligent design with high-speed signal processors and microprocessors as the core.
Equipped with an opto-isolated RS-485 communication interface, Multi-Parameter Monitoring and Control Instrument adopts the ModBus RTU communication protocol. The circuit design implements three-terminal isolation for input, power supply, and output.
Features
4 independent input channels
Supports 24 types of industrial signals
Supports 2 channels of transmission output
Supports 2 channels of relay alarm output
Supports Modbus communication
Inputs
K,S,R,T,E,J,B,N
WRe3-WRe25
WRe5-WRe26
4~20mA
0~20mA
Cu50
PT100
0~80Ω
0~400Ω
0~20mV
0~100mV
0~1V
1~5V
0~5V
-20~+20mV
-100~+100mV
-5V~+5V
Outputs
0-5V
1-5V
0-10V
0-10mA
0-20mA
4-20mA
Communication
Opto-isolated RS-485 communication interface
Alarm
2 channels of relay output
Other Detailed Parameters
| Number of input channels | 4 independent channels, supporting different input types |
| Input signal range | 24 common industrial standard signals |
| Measurement range | -1999~9999 |
| Basic error | 0.002FS±1 digit |
| Resolution | 1/11998 |
| Measurement AD | 20-bit, 25SPS |
| Output DA | 16-bit, 200KSPS |
| Input impedance | ≥500KΩ for voltage signals, ≤300Ω for current signals, ≤0.25mA for thermal resistors, ≥500KΩ for thermocouples |
| Output impedance (load capacity) | ≥250KΩ for voltage signals, ≤300Ω for current signals (can be up to 650Ω for special current requirements, please specify when ordering), relay |
| Display | Nixie tube |
| Sampling period | 0.32S/0.64S |
| Communication method | RS485 interface, two-wire system |
| Transmission distance | 1200 meters |
| Communication protocol | MODBUS RTU |
| Parity | None, Odd, Even |
| Baud rate | 4800, 9600, 19200 |
| Communication data format | 1 start bit, 8 data bits, 1 stop bit |
| Power supply voltage | AC220V |
| Isolation voltage | 2000V AC for 1 minute |
| Operating conditions | Temperature |
| Storage conditions | Temperature |
| Mounting hole size | 44×92mm, |
| Model Dimensions | DK2108: 48×96×90mm |
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