Brief Introduction

SP38M-UART adopts high stability monosilicon sensor technology with bulit-in differential pressure, pressure, temperature sensing elements and high performance dual-channels ASIC with 24bit adc, to calibrate for zero and sensitivity of second-order temperature drift and third-order nonlinear which improved the temperature performance of the sensor. It’s a comprehensive and intelligent sensor with UART output. High overload and high static pressure resistance, static pressure can up to 40MPa.

SP38M-U is suitable for all kinds of harsh environment, the working temperature is -40-85°C. It also has the characteristics of high precision, reliable communication and high stability. SP38M-U monosilicon pressure sensor is widely used in process control, flow control, hydraulic and pneumatic equipment, servo valve and transmission, chemical products and chemical industry as well as medical instrument and so on.

Advantage

• Accurate filling fluid technology.

• Dual diaphragm overload structure.

• High long term stability <±0.05%F.S./year.

• Very low pressure and temperature hysteresis.

• Bulit-in temperature sensor, dual-channels 24bit adc.

• Optional for multiple isolation diaphragm material, widely meet the anti-aggressive requirements.

• Compact design, easy encapsulation, standard UART bus.

• Support sleep / wake mode, lower power consumption.

• Operation status detection, real-time output of fault codes.

• Stable communication and low bit error rate to 1/1000000.

Features

• Differential pressure range: 0-10bar

• Static pressure range: up to 400bar

• Diaphragm material: SUS316L/ hastelloy C

• Power supply Measurement mode: 3.2-3.6VDC@2.3mA；Sleep mode:3.2-3.6VDC@4uA

• Hardware interface: 3.3VDC UART interface

• Communication protocal: Refer to the "LEEG UART Digital sensor communication protocol" document

• Sleep / wake-up way: Communication command sleep

• Wake-up way: IO wake-up, falling edge trigger, pulse width ≥100us

• Wake-up time: ≤ 200ms

• Communication response time: ≤ 50ms

• Operating temperature: -40 +85℃

• Storage temperature: -50 +125℃

• UART accuracy: ±0.05%F.S.@22℃

• Long-term drift: <±0.05%F.S./year

• Housing connection: M56×1.5(M), 23/16UNS(M)

Industry application

• Process control

• Flow measurement

• Environmental control

• Flow control

• Hydraulic and pneumatic equipment, Servo valve and transmission

• Chemicalproducts and chemical industry