1、 Overview
The DMT-1000/4000 series regulator is suitable for measuring, displaying, and accurately controlling various industrial process parameters such as temperature, pressure, liquid level, flow rate, etc.
The DMT-2000 series integrates PID regulator and servo amplifier, and the instrument has all the functions of a conventional PID instrument, and can be used according to.
The difference between the feedback signal of the time valve position and the output of the PID operation directly outputs forward and reverse driving signals, which drive the increase or decrease of the valve opening, ultimately making the actual valve position track the output value of the PID operation, and the process measurement value stabilize near the given value.
2、 Functional Features
● Process measurement input
1. Thermal resistance: Pt100、Cu100、Cu50、BA2、BA1、 0-400 Ω, input impedance>10K Ω, lead wires equal to 5 Ω
2. Thermocouple: K、E、S、B、J、T、EA-2、N， Equipped with automatic cold end temperature compensation, input impedance>10M Ω
3. Standard signal: 0-10mA, 4-20mA, 0-5V, 1-5V, voltage impedance ≥ 400K Ω, current impedance ≤ 250 Ω
4. Remote pressure gauge: 0-400 Ω, signal range can be adjusted on site
Valve position feedback input
Standard signals such as 1.0-10mA, 4-20mA, 0-5V, 1-5V, etc
2.0-1K Ω three wire potentiometer signal
● Input of external given values
Standard signals such as 0-10mA, 4-20mA, 0-5V, 1-5V, etc. (synchronized with process input)
● Intelligentization
1. The input signal can be freely selected
2. Valve measurement position feedback input signal can be freely selected
3. External setpoint input (linear analog input signal of the same type as the measurement signal)
4. Remote switch input for switching between internal and external given values
5. Remote manual automatic control input
6. Triple display of process quantity indication, control quantity indication, valve position feedback indication, etc
7. Valve position feedback value analog transmission output
8. Manual automatic status output (contact)
9. Use non-volatile memory to ensure long-term and reliable storage of data
10. Hand automatic online undisturbed switching
DMT-2000 specific:
1. Triple display of process quantity, control quantity, and valve position feedback indication
2. Tracking error error indication
3： Main technical indicators
1. Installation method: Instrument panel installation
2. Accuracy level: ± 0.5 level ± 1d Resolution: Last word
3. Display mode: PV： Display 4-digit LED digital tube SV: Display 4-digit LED digital tube
4. Input impedance and other characteristics: current signal below 250, level signal above 1M Ω, thermocouple signal below 10M Ω, thermal resistance input three wire equal ≤ 5 Ω does not affect measurement display accuracy
5. Constant voltage power output: DC24V power output is used for two-wire transmitters.
6. Control output: Relay output, contact capacity: AC220V 3A non inductive load
Current and voltage output: Output impedance: 4-20mA load below 500 Ω
0-10mA load below 1000 Ω, output can be isolated according to user requirements
7. Working power supply: AC220V ± 10% 50Hz, DC24V ± 5%
8. Working environment: Temperature: -10-50 ℃ Humidity: 85% RH or below, no corrosive gases, no vibration
9. Instrument structure: Dimensions: 160 × 80mm, 80 × 160mm, 96 × 96mm
Hole size: 152 × 76mm, 76 × 152mm, 92 × 92mm
10. Power consumption: about 8W
