WE-T103 Low Pressure Differential Transmitter
- The mobile app can monitor the meter anytime and anywhere.
- 4 communication methods to choose from.
- Battery and external power supply mode selection.
- Operating temperature range (-20~70)°C.
- Fully sealed waterproof design with IP67 protection.
- High-gain antenna and multiple verification mechanisms ensure always-on.
- Support high-definition LCD display, with LED indicators and buttons, you can check the differential voltage value, alarm information, battery prompt, etc. in real time on the spot;
WE-T103 is a series of micro-differential voltage monitoring transmitters, including LoRa, RS485, 4G, NB, etc., and the power supply mode is battery power supply and 24V power supply. The pressure transmitter adopts high-stability digital sensors to realize real-time monitoring and calculation of on-site pressure, and uses LoRa, RS485, 4G, NB and other communications to achieve long-distance communication.
The probe adopts on-board design, according to the different needs of the medium to be measured on site, the pressure range, and the installation method, providing a variety of pressure range products, optimally matching the needs of application scenarios, can be widely used in building buildings, industrial sites, municipal and other application scenarios.
Measurement principle
Diffusion silicon pressure sensors work on a principle based on the piezoresistive effect. According to the piezoresistive effect principle, the pressure of the measured medium acts directly on the diaphragm of the sensor, and the pressure is transmitted to the varistor through the diaphragm and the filling fluid, so that the resistance value of the sensor changes, and the electronic circuit detects this change and converts and outputs a standard measurement signal corresponding to this pressure.
| Input | |
| Measure variables | Differential pressure |
| Measurement range | Pressure: ±500Pa |
| Performance parameters | |
| Accuracy | Pressure: ±2% FS |
| Minimum resolution | 0.1Pa |
| Sampling period | 1S-65535S can be set, default 30s |
| Reporting cycle | 10s~65535s can be set, default 1 hour |
| Signal transmission | |
| LoRa | Antenna Interface Type: SMA Female
It supports the 410.125~490.125MHz frequency band Maximum transmit power of 22dBm, Maximum -147dbm reception sensitivity, 5KM signal coverage capability with open viewing distance |
| 4G | Antenna Interface Type: SMA Female
Three-year flow rate (100M/month) It supports MQTT, HTTP, and WES cloud service protocols LTE FDD B1/3/5/8 LTE TDD B34/38/39/40/41 (Full Band) Rate(Mbps) LTE FDD:10.3(DL)/5.1(UL) LTE TDD：9.1(DL)/3.1(UL) |
| RS485 | Communication protocol Compatible with WES-IO (fixed 9600bps) and Modbus protocol
Baud rate 4800, 9600, 19200, 34800, 57600, 115200 Data bits 7 bits, 8 bits Stop positions 1 bit, 1.5 bit, 2 bit Check bits None, Odd, Even |
| NB | Antenna Interface Type: SMA Female
Five-year flow rate (300M/year) LTE Cat NB2：B3/B5/B8 Rate(kbps):Single-Tone:25.5(DL)/16.7(UL) Multi-Tpne：127(DL)/158.5(UL) |
| Electrical specifications | |
| Power supply | 19000mAh, lithium battery |
| DC 9-30V | |
| Battery life | Subject to specific usage conditions and reporting cycles.
For example, the collection period is 60 seconds, and it is reported once an hour. LoRa: 4.5 years NB: 3.1 years 4G: 2.5 years |
| Process connection | |
| Media type | gas |
| Medium temperature | -20~85℃ |
| Overload pressure | 150%F.S |
| environmental conditions | |
| Work environment | Temperature: (-20~70)°C
Relative humidity: 5%~95% |
| Storage environment | Temperature: (-40~85)°C
Relative humidity: 5%~95% |
| Protection level | Water and dust resistance: IP67
ESD: 4KV contact, 8KV non-contact |
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