One, Power Supply
Voltage: 24-36VDC, Lower Starting Current: 3.8mA, Higher Power Consumption: 0.6W (powered by 24VDC)
1. The power voltage indicates the voltage required between the power terminals and the electromagnetic flow meter.
2. Connecting to a commercial AC power source will damage the flow meter. Please ensure to use DC power within the specified range.
3. Compatible with almost all distribution boards, signal modulator cards, and I/O modules, except for certain equipment.
System alarm current output status
(Breaker) Upper Limit Alarm: ≥21.6mADC (Standard) Lower Limit Alarm: ≤3.8mADC Air Tube Alarm: ≤3.8mADC System Alarm: ≥21.6mADC
Signal Output
Current Output: 4～20mADC, Two-wire System Output Range: 3.8～21.6mA, Digital Output: Open Collector Contact Grade: 30VDC, 120mADC, Low Level: 0～2VDC (Figure 1) Figure 1 High and Low Levels (Transistor Contact Output)
III. Communication Requirements
Communication Signal: HART Communication Protocol (loaded on 4-20mA DC signal) Communication Line Conditions: Power Voltage: 24-36VDC Load Impedance: 250-400Ω (Figure 2) Figure 2 Relationship between Power Voltage and External Load Impedance Resistance Calculation Formula for Power Lines: R = ρ★ Diameter and Length of Power Lines Selection Must Comply with the Lower Working Voltage Requirement of the Converter
Battery Backup Data Security, Data Retention for 10 Years
Four: Zeroing Function
By using parameter settings, zeroing is performed to ensure an output of 0% at zero flow. Zeroing is conducted when the test tube is filled with the measuring fluid and the valve is closed to completely stop the fluid.
Damping Time Measurement: The damping time can be set from 1 to 60 seconds. When the damping time is short, the output will fluctuate.
Pulse Output
Based on the pulse energy setting, individual calibrated pulses can be output sequentially. Pulse width: 2.5ms, Output speed: 0.001～200Hz
The forward and reverse flow measurement function can measure both forward and reverse flows. The reverse flow measurement can be confirmed on the display via status output.
Alarm Selection Function: Alarms are divided into system alarms (hardware failure) and setting alarms. Users can choose whether to set alarms for each item.
Repeatability ±0.25%
Insulation Resistance: Insulation resistance ≥ 100MΩ, test voltage 1000VDC
Insulation strength test voltage: 1000VDC, test time: 1 minute, standard ≤20mA.
