Product description

The Model 2088 pressure transmitter consists of a piezoresistive sensor and a signal conversion module. The core component of the sensor is a single crystal silicon wafer. When pressure is applied to the single crystal silicon wafer, its resistivity changes. Four resistors are diffused onto the silicon wafer using semiconductor planar processing technology and connected to form a Wheatstone bridge. Under a constant current supply, it can output a voltage signal proportional to the pressure signal. The signal conversion module processes the voltage signal from the sensor and converts it into standard signals such as 4–20mA, 0–5V, 0–10V, 1–5V, and 1–10V. It is widely used in process control and pressure/liquid level measurement across various industries including petroleum, chemical, metallurgy, water conservancy, electric power, food, pharmaceuticals, and environmental control.

Product features

• Reverse polarity protection and current limiting protection circuits; the transmitter will not be damaged if the positive and negative terminals are reversed during installation.
• Solid-state structure with no moving parts.
• High reliability and long service life.
• Easy installation, simple structure, economical and durable.

Technical Parameters

• Measuring Medium: Gases, liquids, oils, and other media compatible with 316 stainless steel.
• Measuring Range: Gauge pressure, absolute pressure, negative pressure (vacuum).
• Accuracy Class: 0.5% FS, 0.25% FS, 0.1% FS.
• Power Supply: 16–36V (24V recommended).
• Overload Capacity: 2 times the standard range.
• Output Signal: 4–20mA DC (HART), or 4–20mA DC, or RS485 output.
• Long-term Stability: ≤ 0.02% F.S. / year.
• Temperature Range: -40 to 80°C.
• Temperature Compensation: -20 to 70°C.
• Temperature Drift Coefficient: < 35 ppm/°C.
• Diaphragm flanges or remote diaphragm flanges can be added; the method of use remains the same.