1、 Overview
The XMT-3000 series intelligent dual digital display alarm is mainly used for dual display of process parameters such as temperature, pressure, flow rate, speed, and frequency, as well as two digit control alarm. The instrument control has multiple output modes with multiple functional combinations and comes with a process variable transmission output. In addition, there is an external 24VDC constant current power supply output, which is used in conjunction with binary transmitters. This instrument has the advantages of small size, simple structure, strong interchangeability, and easy use and maintenance.
The XMTJ-3000L series intelligent dual digital alarm is a customized product.
2、 Main performance indicators
1. The input signals include various types such as thermocouples, thermistors, remote signals, various pressure transmitters, standard signals, etc., which can be mixed with the same machine. Frequency pulse input and various non-standard signals
2. Automatically compensate for the temperature drift and time drift of analog circuits. Ensure the long-term accurate and stable operation of the instrument
3. When inputting standard signals, the display range is programmable
4. Using non-volatile memory for power failure protection, parameters can be reliably stored for a long time
5. All parameters and configurations of the instrument are set and inputted through several operation keys on the panel
6. When outputting analog signals, the output status scale can be set by the user according to the menu content
7. Due to the occurrence of resistance, coupling, and open circuit phenomena in the instrument, the control relay remains in the state before the phenomenon occurred
8. Installation method: disk mounted
9. Display mode: PV1 displays 4-digit LED digital tube, PV2 displays 4-digit LED digital tube
10. Accuracy level: Instrument display level ± 0.5 ± 1d; Resolution: Last 1d
11. Input impedance and other characteristics: Current signal: below 250 Ω
Voltage signal: above 500K Ω
Thermocouple: The resistance of the external circuit of the instrument should not exceed 100 Ω
Thermal resistance: does not affect the measurement display accuracy when the three wires are equal to or less than 5 Ω
Frequency signal: 0.1~10KHz Voltage amplitude: ≥ 2.5V
12. Input alarm method:; Each has 2 alarms (upper limit, upper limit, lower limit, lower limit)
Choose any working mode (alarm below or above the set point) and select any deviation. Output contact capacity AC220V, 3A non inductive load
13. Analog transmission output: 1 transmission output, output status can be set according to user needs; In addition, it can be equipped with isolated output according to user needs. Output impedance DC4~20mA, load below 500 Ω; DC0-10mA load below 1K Ω
14. Constant voltage power output: DC24V power supply for two-wire transmitters
15. Insulation strength: AC1000V input should have no breakdown or arcing phenomenon for 1 minute
16. Insulation resistance: The resistance between each terminal should not be less than 50M Ω, and in humid and hot conditions, it should not be less than 5M Ω
17. Working power supply: AC220V ± 10%, 50 ± 2Hz, DC24V ± 5%
18. Working environment: Temperature: -10~50 ℃; Relative humidity: below 85% RH, no corrosive gases, no vibration
19. Instrument weight: approximately 0 ５kg
20. Power consumption:< 5W
21. Instrument structure:
Dimensions: 160 × 80 × 120mm 80 × 160 × 120mm 96 × 96 × 105mm
Hole size: 152×76mm 76×152mm 92×92mm
