technical parameter: 1. Flow rate range: 10L/s～10m3/s (determined by the type and specification of the water measuring weir groove) 2. Cumulative flow: 8-digit decimal number, automatically return to zero after accumulating 8 digits, recount 3. Flow rate accuracy: +5% (1%～3% of the uncertainty of the dosage of the weir and trough, plus 1%～2% of the instrument measurement error) 4. Ranging range: 0.4~2m (the blind zone is within 0.4m from the bottom of the probe, and the ranging range is within 0.4m~2m) 5. Ranging accuracy: ±3mm (the result of calibration within 1m range) 6. Liquid level resolution: 1mm 7. Working environment temperature: -20℃～55℃ (AC power supply and additional self-tracing in the instrument can be: -35℃～55℃, additional self-tracing should be declared when ordering) 8. Instrument protection level: the display part of the instrument: IP66 (the cable hole at the bottom of the instrument should be blocked); the probe part: IP68 9. Power supply: AC power supply: (220V±22V) 6W (26W when self-tracing is used) DC power supply: 12V±2V 120mA [When DC power is supplied, the meter does not have (4～20) mA output and relay action] When AC and DC power supply exist at the same time, the instrument uses AC power supply; when AC power is off, DC is automatically connected. 11. Timing error of meter calendar clock: <5 minutes/month 12. Meter data storage capacity: Monthly, daily, and hourly records: only record the flow rate ＞2 years, additional 4 channels of other meters ＞4 months Record every minute: only record flow ＞8 hours, additional 4 channels of other instruments ＞4 hours 14. (4～20)mA current connected to other instruments: The internal sampling resistance of the instrument: 200Ω; the negative terminal and the ground terminal of the instrument are connected together Number that can be connected: I1, I2, I3, I4 total 4 channels 13. Printers that can be connected: interface socket, DB25 jack When set to "print record": EPSON compatible (TP-μp40T is recommended) When set to "timed printing": only TP-μp40T (need to use the Chinese character library in the printer) 14. (4～20)mA current output: External load resistance: (0～500)Ω Error: 0.5% (relative to the value indicated by the instrument) The negative terminal and the ground terminal of the instrument are connected together (can be changed to floating ground output according to application requirements) Output content: flow, liquid level optional 15. RS-232: interface socket, DB9 pin Encoding method: 1 start bit, 8 data bits, 1 stop bit, with parity bit or no parity bit Baud rate: 300,600,1200,2400,4800,9600,14400,19200,28800,43200,57600 optional 16. Relay: Control method: Close once per cumulative set m3, liquid level alarm, liquid level upper limit, liquid level lower limit optional Type: Single Pole Double Throw (normally open, normally closed) Contact capacity: AC250V 1A; DC30V 1A
technical parameter: 1. Flow rate range: 10L/s～10m3/s (determined by the type and specification of the water measuring weir groove) 2. Cumulative flow: 8-digit decimal number, automatically return to zero after accumulating 8 digits, recount 3. Flow rate accuracy: +5% (1%～3% of the uncertainty of the dosage of the weir and trough, plus 1%～2% of the instrument measurement error) 4. Ranging range: 0.4~2m (the blind zone is within 0.4m from the bottom of the probe, and the ranging range is within 0.4m~2m) 5. Ranging accuracy: ±3mm (the result of calibration within 1m range) 6. Liquid level resolution: 1mm 7. Working environment temperature: -20℃～55℃ (AC power supply and additional self-tracing in the instrument can be: -35℃～55℃, additional self-tracing should be declared when ordering) 8. Instrument protection level: the display part of the instrument: IP66 (the cable hole at the bottom of the instrument should be blocked); the probe part: IP68 9. Power supply: AC power supply: (220V±22V) 6W (26W when self-tracing is used) DC power supply: 12V±2V 120mA [When DC power is supplied, the meter does not have (4～20) mA output and relay action] When AC and DC power supply exist at the same time, the instrument uses AC power supply; when AC power is off, DC is automatically connected. 11. Timing error of meter calendar clock: <5 minutes/month 12. Meter data storage capacity: Monthly, daily, and hourly records: only record the flow rate ＞2 years, additional 4 channels of other meters ＞4 months Record every minute: only record flow ＞8 hours, additional 4 channels of other instruments ＞4 hours 14. (4～20)mA current connected to other instruments: The internal sampling resistance of the instrument: 200Ω; the negative terminal and the ground terminal of the instrument are connected together Number that can be connected: I1, I2, I3, I4 total 4 channels 13. Printers that can be connected: interface socket, DB25 jack When set to "print record": EPSON compatible (TP-μp40T is recommended) When set to "timed printing": only TP-μp40T (need to use the Chinese character library in the printer) 14. (4～20)mA current output: External load resistance: (0～500)Ω Error: 0.5% (relative to the value indicated by the instrument) The negative terminal and the ground terminal of the instrument are connected together (can be changed to floating ground output according to application requirements) Output content: flow, liquid level optional 15. RS-232: interface socket, DB9 pin Encoding method: 1 start bit, 8 data bits, 1 stop bit, with parity bit or no parity bit Baud rate: 300,600,1200,2400,4800,9600,14400,19200,28800,43200,57600 optional 16. Relay: Control method: Close once per cumulative set m3, liquid level alarm, liquid level upper limit, liquid level lower limit optional Type: Single Pole Double Throw (normally open, normally closed) Contact capacity: AC250V 1A; DC30V 1A
