Front display of an SJ Gauge industrial wireless pressure sensor

Rear view of an SJ Gauge industrial wireless pressure sensor display

Wireless Pressure transmitter

Model: VMWL-P

Supports WSN and GPRS, suitable for petroleum, mining, and automation
Range 100 mbar–1000 bar, LCD display, high accuracy, low power
Long battery life with anti-vibration and moisture-proof design for reliable monitoring

Responsive after-sales service / Customizable
High quality / One-year warranty
Product images are for reference only. Final specifications are based on the confirmed order.

Description

VMWL-P is a wireless pressure transmitter with wireless communication capability. It uses an isolated stainless steel piezoresistive pressure sensor as the sensing element and incorporates a dedicated IC for zero and full-scale thermal error compensation, with battery-powered excitation. Its wireless signal transmission conforms to WSN (Wireless Sensor Network) and GPRS internet protocols, allowing multiple WL units to form a complete WSN and GPRS monitoring system. This transmitter is suitable for large-scale real-time data monitoring, such as gas tank water seal detection, oil tank monitoring, and industrial automation control inspection. It is widely used in industries such as petroleum, coal, tap water, and automation control.

Specifications

Measuring range	0 ... 1000 bar
Min. measuring span	100 mbar
Max. measuring span	1000 bar
Pressure Type	Absolute and gauge pressure
RF Frequency	430 MHz/470 MHz
Output signal / Supply	WSN (Wireless sensor network), GPRS, 4G, LoRa, LoRaWAN, , and NB-IoT
Power supply	3.6V battery or 12/24VDC
Accuracy	±0.25%FS ±0.5%FS Including non-linearity, hysteresis and non-repeatability according BFSL
Maximumrange in open area	1 km (max.)
Transmit power	20 dbm (Adjustable)
Transmit interval	1s-255s (User definable)
Operating Temperature	20 to 85 °C
Material process membrane	Ceramic (96% Al2O3)
Long term stability	≤ ±0.2 % FS/Year