I. Product introduction
RSTMH-A universal ultrasonic level meter is A kind of universal ultrasonic level meter, which absorbs the advantages of many kinds of level meters at home and abroad. It is a universal type of object level instrument with full digitization and humanized design concept. It has perfect functions of object level measurement and control, data transmission and man-machine communication. This product adopts modular circuit design, multi-layer PCB board of military quality, compact hardware structure and reasonable layout. This product supports isolated 4-20 mA output, built-in wireless data transmission such as GPRS, GPS and Bluetooth, supports data collection or USB storage of Mini SD card, and can add modules to realize other functions according to customers' requirements.
This product adopts imported industrial grade chip, digital temperature compensation, etc. Associated as IC. With strong anti-interference, the upper and lower limit nodes can be arbitrarily set and on-line output adjustment, and with field display, the shell adopts engineering plastic ABS waterproof shell, the shell is small and quite strong. This product does not need to contact the industrial medium to meet most of the liquid level, material level measurement requirements, completely solve the pressure type, capacitance type, float type and other traditional measurement methods caused by the winding, blockage, leakage, media corrosion, maintenance inconvenience and other shortcomings. Therefore, it can be widely used in various fields related to material level and liquid level measurement and control.
II. Product features
★ Wide range of voltage adaptation, can work in 12-28V DC voltage
Backup and restore Settings
★ Can measure a variety of physical functions
★ Can adjust the analog output function
★ With full range start and end arbitrary Settings function
★ Value added/difference ranging option, can be measured both distance and object level
★ With 0-100 level transmitting pulse intensity, can be set according to the working condition
With built-in GPRS module, radio module, Bluetooth module, Wifi to achieve the Internet of things
OLED Menu in English and Chinese with spontaneous light
★ Can be manually set fixed interference filtering function
★ Can measure object level, liquid level, volume, weight, etc
★ Can adjust the analog output
★ Digital filtering and echo recognition function
★ Support for custom speed of sound (special material measurement)
Support custom serial data format
Support custom mathematical function operation
Support three, four wire system
III. Application field
☆ Water and sewage treatment pump room, well collection, biochemical reaction tank, sedimentation tank, etc
☆ Power, mine mortar pool, coal slurry pool, butter storage tank, storage yard or part of the mobile equipment control
☆ Food industry winery, granary, food materials filled tank and so on
☆ Control system supporting use
Iv. Performance indexes
Range: 2 m, 5 m, 8 m, 10 m, 12 m, 15 m, 20 m, 25 m, 30 m, 35 m, 40 m (selected when ordering)
Blind area: < 0.25-2 m (depending on the range)
Emission Angle: less than 10° (depending on the sensor)
Minimum display resolution: 1 mm
Frequency: 20 KHz ~ 2000 KHz
Accuracy: + / - 0.25% F.S
Temperature compensation: Automatic temperature compensation
Display: LED, LCD, OLED Menu in English and Chinese with self-illumination (optional)
On-site setting: The local key is completed
Output (selected when ordering)
Analog output signal: 0 ~ 20 mA; 4 ~ 20 ma load > 300 Ω; 0 ~ 5 v. 0 ~ 10 v
Digital output: RS485 (Modbus supported);
Wireless transmission: Built-in GPRS wireless communication optional SMS data prompt (acquisition system can be customized)
Switch output: two-channel NPN/ relay (AC:5A 250V DC:10A 24V)
Power supply (selected on order)
Operating voltage: DC 12 -- 28 V or AC 220 V
Power consumption: < 1.5 W
V. Physical properties
Dimension: Φ 74 mm * 132 mm * G 1 1/2 (2 m span)
92 mm * 198 mm * Φ M 60 (5 m to 15 m span)
92 mm * 270 mm * Φ DN 80 non-standard flange (20 m and 40 m span)
Installation interface: G 1 1/2 pipe thread or Φ 50 mm round hole with big gongs ring (2 m span)
￠60 x 2 or 61 mm round hole with large gong ring (5 m-15 m range)
DN 80 Non-standard flange (20 m-40 m range)
Shell material: ABS engineering plastic, nylon
Incoming cable: User-defined length (built-in terminal)
Electrical interface: M 20 x 1.5
Key plate: three touch A, B, C keys
VI. Environmental performance
Protection level: IP 65 (higher protection level can be customized)
Explosion-proof grade: EXiaII BT4Gb(selected when ordering)
Working environment: normal temperature/pressure
Storage humidity: ≤80%RH without condensation
Vii. Product Size Description (unit: mm)
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