DH2000VB Fixed value controllerDetailed product description：

The DH2000VB constant value control instrument is an intelligent instrument that uses an advanced microcontroller as the CPU. It has a simple structure and high reliability. When paired with a flow meter, it can measure the mass or volume of the flow rate. The instrument can be controlled by inserting parameters through the panel. The instrument also has temperature compensation function, and the upper and lower temperature limits can be set through the panel. It has power-off protection function for parameters and is an ideal instrument for liquid control.

Overview
The volumetric flowmeter is used for the first measurement of liquid quantitative filling. The flowmeter is equipped with our company's GDF-II anti vibration and positive direction recognition signaling device. In the process of liquid transportation, the transmitter transmits pulse signals to the constant value controller, and each pulse signal represents the volume of liquid passing through (unit: cubic meter). Temperature measuring platinum resistors are installed on the liquid transportation pipeline to monitor temperature changes during the liquid transportation process in a timely manner and transmit data to the constant value control instrument.

Main technical parameters
1. Input
⑴. Traffic signal
Voltage signal:
ZF amplitude above 5V (P-P), frequency 0-50Hz
QF amplitude above 5V (P-P), frequency 0-200Hz
GDF amplitude above 12V (P-P), frequency 0-1KHz
Current signal:
Ag19 IL<1mA,Ih>4mA, Frequency 0-187Hz
⑵. Temperature signal input: Three wire system, 4-20mA Pt100 platinum resistor, resolution ± 0.1 ℃.
⑶. External control signal input: contact point
⑷. External control power input: DC24V
2. Output
⑴. Fixed value output: contact capacity DC24V, 5A
⑵. Advance output: Contact capacity DC24V, 5A
⑶. Maximum cumulative amount: 9999999
⑷. Fixed value setting range: 0-99999.9
⑸. Pulse equivalent setting range: 0.00001 to 9.99999
Accumulated error ± 1 pulse
3. Normal working conditions:
Environmental humidity: 0 ℃~40 ℃ Relative humidity: ≤ 85%
There are no corrosive gases in the surrounding air
4. Dimensions: 150 × 75mm (length × width) Insertion depth: 160mm
5. Whole machine weight: 1.0Kg

characteristic
1. Built in AC/DC and DC/DC host power modules ensure stable machine operation.
2. Built in intermediate relay link, electrostatic interlocking.
3. Built in control units for various electro-hydraulic valves and solenoid valves.
4. Adopting advanced parallel RAM, it has high reliability power-off data protection function (data is not lost after countless power on shocks, and data protection can reach 100 years).
5. Using high-precision serial A/D conversion chip for temperature conversion.
6. This machine does not require a regulated power supply system and has high anti-interference strength.
7. The screen adopts a multi digital display window, equipped with a status digital display.
8. Important parameters are closely protected to prevent inaccurate measurement caused by arbitrary modification of parameters.
9. This machine is equipped with a communication interface and software with the system machine for customer networking use.
10. Clock function: The clock function carried by this instrument can print the year, month, day, hour, and minute at the end of filling.