Usually, the pressure in the heating system is not the same in the normal operation of the system, so it is necessary to monitor the pressure everywhere.
Usually, the pressure in the heating system is not the same in the normal operation of the system, so it is necessary to monitor the pressure everywhere. In heating engineering, pressure difference and resistance in most cases are synonymous, fluid flow in a certain pressure situation, flow through a hydraulic element, a section of pipe, the flow is constant, the pressure is reduced, called pressure loss, this pressure loss can be measured using pressure meters, called pressure difference, referred to as
pressure difference.
The pressure difference in the heating system mainly has the following: the pressure difference between the inlet and outlet of the circulating pump, the pressure difference between the inlet and outlet of the boiler, the water pressure difference between the supply and return of the heating external network, the pressure difference between the inlet and outlet of the decondaminator, and the pressure difference between the inlet and outlet of the hot user. In other words, these places should be equipped with pressure gauges to monitor the heating situation. When the water pressure difference between the supply and return of the heat user is insufficient, the flow rate is
certainly insufficient, and the heating effect is certainly poor. The heating company can monitor the pressure to see if the heating is working properly in real time. The integrated remote pressure gauge developed by Tangshan Landi can be applied to heating pressure monitoring.
Integrated remote pressure gauge is a high-performance iot pressure gauge developed for market demand, integrating signal acquisition, data storage and wireless data communication. It adopts ultra-low power consumption technology and uses disposable lithium battery power supply. Without the need of power supply, you can directly monitor pressure data in real time, collect digital signals, analog signals, level signals, dry contacts, pulse signals, etc., and have the function of
automatic detection and real-time alarm of upper and lower limits.
1. Application field
Urban water supply pipeline pressure and flow monitoring; City gas pipeline pressure and flow monitoring; Pipeline leakage monitoring system; Tank, tank pressure,
liquid level monitoring; Oil well pressure monitoring; Fire pipe pressure monitoring
Second, product features:
Low power design, energy saving and environmental protection, high channel data transmission security, 4G, 5G, NB-IoT, LoRa optional, IP68, waterproof, explosion-proof.
Third, product function
01. Monitoring function
Monitor the pipeline pressure data, and reserve RS485 interface, digital interface, can collect other instrument signals.
02. Transmission function
Embedded 4G, NB-lot, LoRa modules, to achieve acquisition, storage, wireless transmission in one;
03. Data interface
Analog signal input: 2 analog signal input, can be connected to water level, temperature, water quality and other transmitters output current or voltage signals;
Pulse volume signal input: 3 pulse signal input, can be connected to water meter, rainfall and other pulse sensors; For the water meter can achieve forward and reverse metering;
Digital signal input: 1 RS485 interface, can be connected to the user
intelligent instrument;
04. Communication protocol
Standard MODBUS-RTU protocol, support configuration software, such as: Asia control, power control, JEChong, Purple gold Bridge and other configuration software. Lundy 68 protocol: Custom;
05. Meter reading function
Embedded a variety of manufacturer instrument protocols, unified data active reporting format, reduce the difficulty of PC development;
06. Boost voltage function
The device has an internal voltage boost function, which can provide 5VDC, 12VDC, 24VDC power supply for other equipment on site.
07. Display function
LCD display field monitoring data and working parameters, such as: pressure, flow, battery voltage, time, working status, etc.
08. Data storage function
The collected data is stored periodically, and the storage period can be set arbitrarily;
4 BYTES flash storage space, the number of records stored is not less than 100,000;
09. Data recruitment function
If the device fails to report this time due to other reasons such as the mobile network, the collected data will be automatically saved and reported to the monitoring center together with the next report.
10. Device alarm function
Monitoring pressure data limit alarm;
Equipment anti-demolition, anti-theft alarm;
Low battery voltage alarm to remind users to
replace the battery.Technical parameters:
Basic functions: to achieve collection, storage, wireless transmission integrated wireless remote pressure gauge
Data upload method: 4G, 5G, NB-lot, LoRa
Working mode: Periodic active reporting, the reporting period can be set, and the data exceeds the limit
Reporting mode: Data can be reported to one to four monitoring centers and supports APN reporting
Acquisition accuracy: 0.1% of analog quantity
Parameter setting: Local parameter setting, remote parameter setting
Power supply: battery power, solar power, mains power 220V
Working current: static on-duty current <70uA, sending data <100mA
Working environment: Temperature: -40-80℃, humidity: ≤95% no condensation
Data interface: RS485
Industrial clock: Built-in industrial clock, automatic time calibration
Data acquisition: Pulse
Collection resolution: 24bit
Remote maintenance: The terminal program can be maintained and upgraded remotely
Voltage range: DC7.2V-12V
Antenna: Suction cup
antenna can be customized 
