SP38D UART Monosilicon pressure sensor

Product catalog summary

Description:
The SP38D-U monosilicon pressure sensor is designed for use in various applications such as process control, flow control, hydraulic and pneumatic equipment, and medical instruments. It utilizes high stability monosilicon technology with built-in temperature compensation and a dual-channel ASIC with a 24-bit ADC. The sensor offers high overload and static pressure capabilities up to 40MPa and operates in temperatures ranging from -40°C to 85°C. Key features include high precision, stability, and a strong output signal.

Technical Specifications:

Power Supply: 3.2V-3.6VDC @ 1.7mA
Hardware Interface: 3.3V
UART Input/Output Levels: V_INL < 0.2*V_supply, V_INH > 0.7*V_supply; V_OUT = 0.4VDC, V_OUT = V_supply - 0.4VDC
Output Data Format: Float (ABCD)
Data Frame Format: Asynchronous 10, 11, 12 bit
Baud Rate: 4800Hz, 9600Hz, 19200Hz
Temperature Range: Working -40°C to 85°C, Storage -50°C to 125°C
Temperature Effect: < ±0.05% F.S. from -40°C to 85°C
Pressure Hysteresis: < ±0.05% F.S.
Long Term Drift: < ±0.05% F.S./year
Diaphragm Material: 316L or Hastelloy C

Pressure Range and Static Pressure:

SP38D-U -6 to 6kPa: Overload 16MPa, Static 25MPa
SP38D-U -40 to 40kPa: Overload 16MPa, Static 40MPa
SP38D-U -250 to 250kPa: Overload 16MPa, Static 40MPa
SP38D-U -0.5 to 1MPa: Overload 16MPa, Static 40MPa

Wiring and Dimensions:
The sensor includes a wiring diagram with color-coded connections: Red (V+), White (V-), Yellow (RxD), Brown (TxD). Dimensions are provided in millimeters.

Selection Table:
The selection table provides options for pressure type (Differential, Gauge, Absolute), diaphragm material (SUS316L, Hastelloy C), fill fluid (Silicon oil), mechanical connection, and sensor seal. An example model is SP38D-U105DSD4PH1.

Catalog excerpts

SP38D UART Monosilicon pressure sensor-1

SP38D UART Monosilicon pressure sensor SP38D UART Monosilicon pressure sensor I: Description SP38D-U use high stability monosilicon technology with built-in temperature compensation, intergrated high performance dual-channels ASIC with 24bit adc. Calibration for zero and sensitivity of second-order temperature drift and third-order nonlinear to improve the temperature performance of the sensor. It’s a comprehensive digital and intelligent sensor with UART output. High overload and high static pressure can up to 40MPa. SP38D is suitable for all kinds of harsh environment, the working temperature is -40~85°C. It also has the characteristics of high precision, high stability and strong output signal. SP38D-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. ● 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 ●Dynamic detect running status, Real-time output fault code ●One button to restore factor

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