Overview
Wall-mounted ultrasonic liquid level difference meter is a new-generation ultrasonic level measuring instrument developed by our company according to the actual demand of water conservancy and hydropower industry and based on years of measurement and control experience.With advanced embedded micro-processing technology, the instrument has achieved a high degree of digitalization and intelligence.It integrates ultrasonic sensor, servo circuit, temperature compensation circuit, computing host as one of the non-contact liquid level difference measuring instrument.With high precision, long life, stable and reliable, easy to install and maintain and other characteristics, widely used in rivers, lakes, locks, locks and other industries grille before and after the level difference measurement.
Product features
■High measurement accuracy, easy installation, suitable for different occasions, not affected by the weather and other factors;
■The transducer is a transmitter and receiver, which can accurately receive weak echo signal;
■Original filter processing function, automatic identification of true and false echoes;
■It has the function of point-by-point temperature compensation, which improves the measurement accuracy and the adaptability of working conditions.
■Liquid level difference can be directly displayed by LCD field, and can output remote signal;
■With 4 sets of relay outputs, available for level differential or position control (optional);
■Serial data output or 4～20mA output or 0～5V analog output and 1～5 analog output (optional when ordering);
■Can choose the upper software, directly on the PC to monitor the actual point;
■With 4mA and 20mA digital fine tuning function, debugging is very convenient and fast;
■With a full range of the beginning and end of any digital translation function;
■It has the function of liquid level mode and liquid level difference mode;
■Support SD card data storage, GPRS wireless communication (optional when ordering);
Technical indicators
Table 1
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Performance indicators
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Range
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2m、5m、8m、10m、12m、15m、20m、25m、30m
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Blind area
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< 0.3m、< 0.5m、<1.5m
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working frequency
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20 KHz ~ 40 KHz (different depending on model specifications)
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Poor emission angle
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12°
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Temperature compensation
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Automatic temperature compensation
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Value accuracy
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0.3%F.S
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display resolution
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Minimum 1 mm
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Display
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Chinese and English large screen LCD, color TFT (optional)
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Input signal
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Digital signal
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RS485(support Modbus protocol)
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Current signal
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4-20mA
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Output signal (selected when ordering)
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Analog output signal
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0～20mA、4～20mA load > 300 Ω;0～5V、0～10V
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Digital output
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RS485 (support Modbus)
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Wireless transmission
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Built-in GPRS wireless communication optional SMS data prompt
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Switch output
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Two-channel NPN/3 relay (AC:5A 250V DC:10A 24V)
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Power supply
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Operating voltage
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AC160V～250V
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Normal power consumption
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<5W
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Physical characteristics
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Main frame dimensions
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240mm×184mm×110mm
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185mm×256mm×60mm
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Shell material
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ABS engineering plastics/cast aluminum
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Button
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16 bit light touch key
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Transducer
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ABS engineering plastics/PP
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Sensor mounting interface
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G1 1/2, M60×2, M30×1.5 (different depending on the transducer)
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Sensor cable
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10m (optional arbitrary length)
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Protection level:
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IP65 (higher protection grade can be customized)
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Working environment:
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Normal temperature/pressure
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Storage humidity:
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≤80%RH without condensation
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