Product Description
This wireless pressure transmitter belongs to the supporting product of oil-water well wireless monitoring system, and is suitable for pressure monitoring during production, storage, and transportation process of oil-water well. Adopts micro-power wireless communication mode, no wiring required, so installation becomes quicker, safer, and more convenient. In addition, there are matching wireless adapters that can convert many wireless pressure signals into MODBUS standard signals for transmission via Ethernet or serial port, which can help to access measurement control system more convenient and has a wide range ofapplications.
2. Working Principle
The sensing element of this wireless pressure transmitter is a diffused silicon pressure sensor, and the Lora module is used for wireless communication. The sensitive chip uses integrated circuit technology to make a sensitive piezoresistance on a crystalline silicon wafer to form a wheatstone bridge as a sensitive device for force-electric conversion. When an external force is applied, the bridge loses its balance. When a constant current excitation power is applied to the bridge circuit, the pressure signal can be linearly converted into a millivolt-level voltage signal, amplified into a digital signal, and then sent by a wireless module to a host computer.
Technical Index
| Pressure range |
(0 ~ 100) bar (can be customized) |
| Accuracy level |
0.5 |
| Measuring medium |
liquid, gas |
| Overload pressure |
150% F. S |
| Reporting cycle |
1 minute to 12 hours can be set |
| Decimal digit |
0 to 3 digits can be set |
| Signal transmission |
Lora wireless |
| Transmitting power |
≤150mW |
| Transmission distance |
ordinary 2Km |
| Working power |
3.6V lithium battery |
| Battery life |
≥2 years (upload once every 120 minutes) |
| Process interface |
standard M20 × 1.5 (or customized according to requirements) |
| Explosion-proof grade |
ExiaIIBT4 Ga |
| Ingress protection |
IP66 |
| Working environment temperature |
-40 ºC ~ 70 ºC |
| Working environment humidity |
≤95% RH |
| Product weight |
1350g (net weight) |
4. Dimensional Drawing
5 Display Description
The display panel of the wireless pressure transmitter is as follows:
The sections of the display panel are described below:
| Code |
Code description |
| 1 |
Over-pressure alarm indicator, flashes when pressure value exceeds range |
| 2 |
Debug interface |
| 3 |
Button settings |
| 4 |
Button 1 |
| 5 |
Button 2 |
| 6 |
Battery level indicator |
| 7 |
Battery voltage indicator |
| 8 |
Lora signal indicator |
| 9 |
Lora signal strength indicator |
| 10 |
Lora channel indicator |
| 11 |
Pressure value |
| 12 |
Pressure value unit |
| 13 |
Full pressure indicator |
| 14 |
Group code and serial number |
6 Installation Notes
6.1 Make sure that the pressure measurement range required by the process is consistent with the pressure transmitter to be installed.
6.2 The thread specifications of the process interface must be matched with the wireless pressure transmitter.
6.3 Before installing a pressure transmitter on the pipeline, closing the valve (needle valve or gate valve) on the pipeline where the pressure transmitter to be installed, and then screw the transmitter directly into the upper port of the valve. After installation, open the valve to confirm that there is no leakage, that is, the installation is qualified.
7 Parameter Settings
7.1 Set the instrument parameters by using the manual operator
1) Select "Initialize" on the manual operator, enter the wireless channel, network, group number, and serial number to be set in the pop-up dialog window, and press the "Set" button to save.
2) Place the magnet in the magnetic induction zone of the wireless pressure transmitter for 6 seconds. The transmitter resets and obtains the parameters from the manual operator.
3) When you hear the "tick" sound of the manual operator, it means that the parameters of the wireless pressure transmitter have been set successfully.
7.2 Use the buttons to set the instrument parameters.
1) Press the Zero button, the instrument enters the setting mode and displays [01].
2) Press the W2 button to enter the communication address setting state, and the modified digit flickers. At this time, press the W1 button to modify, and hex cyclically increments from 0-F. After the specified number is selected, press the W2 button to switch to the next digit. After the highest digit is set, press W2 to automatically exit the address setting and enter the next parameter setting item [02].
3) Press the W1 button to switch parameter setting items. To make the parameters effective after the modification is completed, you must press the W1 button, switch to the [99] setting item, press the W2 button to enter the setting, and set its value to 1111. After setting, press the W2 button to confirm, the instrument will automatically restart, and the new parameters are saved.
4) If you do not enter the [99] setting item, the previously modified parameters will not take effect, and automatically exit the setting state after the button times out.
5) Parameter list description
| Code |
Code description |
| 01 |
Enable target Lora address to be specified, default 0. |
| 02 |
Target Lora address, [01] is valid after enabling. |
| 03 |
Regular data response waiting time. |
| 04 |
Lora channel, subtract 11 from the channel calculated from the well name. |
| 05 |
Lora Network ID. |
| 06 |
Instrument Lora address, default 0xfffe, assigned by the coordinator. |
| 07 |
Group code and serial number. |
| 08 |
Maximum sleep time. |
| 99 |
Save parameters, set to 1111 effective. |
8 Common Fault Handling
When the instrument cannot work normally, users can refer to the following table for simple maintenance. If the fault cannot be eliminated, please contact the manufacturer.
| Situation |
Cause Analysis |
Approach |
| The instrument has no display |
Dead battery |
Replace battery |
| The host computer cannot receive data |
Wireless parameters are different |
Set the instrument's wireless channel and ID to be the same as the host computer |
| Low pressure |
Pressure hole is blocked |
Remove the instrument and clean the pressure hole |
9 After-sale Service
The warranty period of this product is one year under the conditions that the user fully complied with the requirements of the instructions, used correctly, and there is no artificial damage.
Company Information
Tianshui Huatian Sensor Co., Ltd. is a new high-tech enterprise which combined R&D, production, sales with engineering service. It is one of the enterprises which engaged in the integrated pressure sensors and transducers in China. We have passed GB/T 19001-2008 quality management system certification in November 2009.
The Main Products:
CYX series pressure sensors, CYB series pressure transmitter, CYBD series intelligent measurement instrument, CYBK series electronic pressure switches and CW series temperature transmitters.
At present, the company has a number of patents with independent intellectual property rights for the integrated pressure sensors and transducers, which are widely used in industrial automation fields such as coal, oil, electric power, metallurgy, light industries and etc.
The First-Class Equipment:
Laser Trimming Machine; Gold Wire Ball Welding Machine; Shaped Cap Sealing Machine; Laser Welding Machine; High Vacuum Oiling Machine; Precision High Low Temperature Test Box; High Precision Automatic Temperature Compensation System and Automatic Test System and Other Hardware Facilities.
Business Advantages:
One hundred thousand purification plant (3000m2); Pressure sensors, transducers and intelligent digital instrument production line (200000 pieces annual output); A leading domestic OEM oil pressure sensor core body production line (1000000 pieces annual output); High-quality R & D team; Advanced process technology.
We are willing to create a splendid future with customers and partners hand in hand.
Factory Production Equipment
5 Display Description
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