Product Description:

Prepaid function: solves the current problem of difficult charging by disconnecting the contactor and preventing the water pump from starting when the user's remaining flow is insufficient.
Scientific measurement: Accurately measuring the actual sewage discharge through flow meters is more scientific and accurate than estimating flow rates.
Real time monitoring: Through remote data collection, users' emissions can be timely monitored for scientific scheduling and dynamic management.
On site alarm function: When the remaining flow is insufficient, the light alarm is activated to prompt the user to pay in a timely manner.
SMS reminder function: When there is not much remaining data, the system sends a text message to the user to urge payment.

Technical parameters:

4.2.1 Instrument error
Test conditions: Preheat for more than 5 minutes when powered on to achieve optimal accuracy.
Flow digital sampling with arbitrary error<0.05%:
Flow simulation signal, any industrial control error<0.2%
Frequency signal, any industrial control error<0.1%
4.2.2 Input signal
Analog quantity: (2-4 channels) Voltage: 1-5V Current: 4-20mA
Thermistor: (1-2 channels) Pt100, Pt1000
Pulse quantity: (1 channel) Waveform: rectangular wave, sine wave, or triangular wave
Amplitude: Low level 0-2V, high level 5-24V
Frequency: 0-10KHz
Sensor distribution: 24VDC or 12VDC, with distribution output current limiting protection
4.2.3 Communication Interface
Number of interfaces: (1-2 channels)
Interface type: Optoelectronic isolation RS232 or Optoelectronic isolation RS485
Communication speed: 1200240048009600 can be set
Communication protocol: Modbus or other
4.2.4 Flow transmission output (1 channel)
Analog output: 4-20mA/0-10mA adjustable, load resistance 0-600 ohms, data update time ≤ 1S, error ± 0.2%
Frequency output: 0~10KHz, duty cycle 50%, error ± 1HZ
4.2.5 Sampling Error
Frequency signal input: ± 1HZ
PT100 signal input: ±0.2℃
Voltage and current analog signal input: ± 0.1%
4.2.6 Power outage record
Automatically record the last 32 power off/on times
4.2.7 Display Capability
High definition white background with black text 128 × 64 LCD display screen, fully displaying in Chinese.
4.2.8 Power outage data storage time: theoretically not less than 10 years
4.2.9 AC power supply: 220VAC, 50HZ, ± 20% (AC power supply model)
4.2.10 DC power supply: 9V~16V (DC power supply model)
4.2.11 Power consumption: less than 10W
4.2.12 Environment: Operating temperature: -20~60 ℃ Relative humidity: 0~85%

Application scope:

Petroleum, chemical, textile, metallurgy, mining, light industry, medicine, electricity, environmental protection, municipal, food and scientific research fields, etc