SP38D differential pressure sensor

Product catalog summary

Description:
The SP38D Monosilicon Pressure Sensor utilizes high precision monosilicon technology, offering built-in static pressure and temperature compensation. It is designed for high overload and static pressure environments, withstanding up to 40MPa. The sensor operates effectively in temperatures ranging from -40°C to 85°C, making it suitable for harsh environments. Applications include process control, environmental control, flow control, hydraulic and pneumatic equipment, servo valves, chemical industries, and medical instruments.

Accurate filling fluid technology
Dual diaphragm overload structure
High long-term stability (<±0.05% F.S./year)
Low pressure and temperature hysteresis
Optional built-in static and temperature sensors
Multiple isolation diaphragm materials available
Compact design for easy encapsulation

Technical Specifications:

Power Supply: 5V typical, 12V max
Working Temperature: -40°C to +85°C
Storage Temperature: -50°C to +125°C
Output Voltage: 50-140mV for 60-3kPa
Temperature Effect on Zero: ±0.05% F.S./°C
Temperature Effect on Span: -0.2 ± 0.05% F.S./°C
Temperature Hysteresis: <±0.1% F.S. for 10kPa ≤ Nominal value ≤ 10MPa
Pressure Hysteresis: <±0.05% F.S.
Long Term Drift: <±0.05% F.S./year
Linearity Error: <±0.3% F.S. for 10kPa ≤ Nominal value ≤ 10MPa
Static Pressure Affect: <±0.1%/10MPa for 10kPa ≤ Nominal value ≤ 10MPa
Diaphragm Material: 316L/Hastelloy C
Mechanical Connection: M27×2(M), 2 3/16-16 UNS, M56×1.5(M)

Pressure Range and Static Pressure:

Type	Range Code	One Side Overload Pressure	Static Pressure
SP38D	-3-3kPa	0.3MPa	7MPa
SP38D	-6-6kPa	16MPa	25MPa
SP38D	-40-40kPa	16MPa	40MPa
SP38D	-250-250kPa	16MPa	40MPa
SP38D	-0.5-1MPa	16MPa	40MPa

Wiring Diagram and Dimensions:
The wiring diagrams are provided in two figures, with color-coded definitions for connections: V+, T, S+, S-, and V-. The dimensions are specified in millimeters.

Selection Table:
The selection table provides options for model configuration, including pressure range, pressure type (Differential, Gauge, Absolute), diaphragm material (SUS316L, Hastelloy C), fill fluid (Silicon oil, Fluorocarbon oil), mechanical connection, sensor seal, and wiring diagram.

Catalog excerpts

SP38D Monosilicon pressure sensor SP38D Monosilicon pressure sensor I: Description The core sensor is high precision monosilicon technology with SP38D, it can be built-in static pressure and temperature compensation, which maximum improves the static pressure and temperature performance of the sensor. With high overload and high static pressure, high static pressure up to 40MPa. SP38D is suitable for all kinds of harsh environment, the working temperature is -40~85°C. SP38D monosilicon pressure sensor is widely used in process control, environmental 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 ●Optional for built-in static sensor, temperature sensor ● Optional for multiple isolation diaphragm material, widely meet the anti-aggressive requirements ●Compact design, easy encapsulation

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SP38D Monosilicon pressure sensor LEEC II: Technical specifications: Pressure range and Static Pressure Note: 1 )End point straight line setting 2)Pressure applied onto the H side of the sensor

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