Table of Contents What is atmospheric pressure? Atmospheric pressure (also known as air pressure) is the force exerted by air molecules on a unit area
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Atmospheric Pressure Sensor
This atmospheric pressure sensor adopts an imported high-precision measuring unit. The device has built-in high-precision temperature compensation, high stability, low drift, and high repeatability. It can be easily fixed to the wall by wall-mounted housing. Applicable to small weather stations and other places that require atmospheric pressure monitoring and temperature measurement.
- Model: RS-QY-*-2-4-EX
- MOQ: 1 PCS
- Delivery date: within 24 hours
- Price: $21
Description
Parameters
Application
Solution
Description
Atmospheric pressure sensor features:
1.10-30V wide DC voltage supply atmospheric pressure sensor
2. atmospheric pressure sensor output can be RS485,4-20ma,0-5V, or 0-10V.
3. Atmospheric pressure and temperature are measured simultaneously
4. Wide range of 0-120Kpa air pressure range, can be applied to various altitudes
5.Offer free cloud platform.
Parameters
| Power supply | 10~30V DC | |
| Measure range | Air pressure | 0~120Kpa |
| Temperature | -40℃~80℃ | |
| Operating temperature | -20℃~+60℃，0%RH~80%RH | |
| Accuracy | Air pressure | ±0.15Kpa@25℃ 101Kpa |
| Temperature | ±0.5℃ | |
| Long-term stability | Air pressure | -0.1Kpa/year |
| Temperature | ≤0.1℃/year | |
| Output signal | RS485/4~20mA/0~5V/0~10V | |
Application
barometric pressure sensors are highly waterproof and use imported high-sensitivity digital probe, which has a stable signal and high accuracy, applicable to computer room monitoring system, security engineering, medical and health monitoring, cold chain transportation, agricultural pastures, orchards, etc.
Solution
Atmospheric pressure transmitter common problems and solutions
The atmospheric pressure sensors cannot be connected to PLC or computer
possible reason:
1. The computer has multiple COM ports, and the selected port is incorrect.
2. The atmospheric pressure sensor address is incorrect, or there is a device with a duplicate address (all the factory defaults to 1).
3. Baud rate, check mode, data bit, stop bit error.
4. The host polling interval and the waiting response time are too short and need to be set to more than 200ms.
5. The 485 bus is disconnected, or the A and B lines are reversed.
6. If the number of the atmospheric pressure sensor is too large or the wiring is too long, the power should be supplied nearby, add 485 enhancers, and increase the resistance of 120Ω terminal.
7. The USB to 485 drivers is not installed or damaged.
8. Equipment damage.
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