SK202 pressure transmitter

◆Overview

The SK202 pressure transmitter is a pressure transmitter with a generous appearance, reasonable configuration and high precision. It has a pressure measurement method such as gauge pressure and negative pressure. It adopts a piezoresistive sensor that has been automatically tested by a computer and is subjected to a laser temperature adjustment process for zero point and sensitivity compensation in a wide temperature range as a signal measuring component. The sensor signal is converted by a signal processing circuit. For standard signal output, the product has been rigorously screened by long-term aging and stability assessment, and its performance is stable and reliable. The transmitter can be equipped with a field display meter with field data recovery, 4~20mA superimposed HART protocol digital signal, with the stability and reliability of the imported pressure transmitter. High-quality sensors and circuits guarantee the highest performance-price ratio of pressure transmitters. The SK202 Smart Pressure Transmitter ensures the highest performance and long-term stability in harsh environments. It can be applied to the occasions where the working environment is harsh and requires the field to display the measured pressure. It is suitable for pressure measurement in industrial processes such as heat, petroleum, chemical, metallurgy and electric power.

◆Features                   

1. Easy to install, can be installed directly.

2. Gauge pressure, absolute pressure, negative pressure

3. Imported sensor chip for measurement under different pressure conditions

4. Laser trimming compensation zero point and temperature performance

5. Vibration, overload and shock resistance

6. High precision, high stability and high reliability

7. Strong anti-interference ability

8. LED, LCD display two forms of choice

9. power protection

◆Dimensions

Pressure transmitters measure the level, density, and pressure of a liquid, gas, or vapor, and then convert the pressure signal into a 4-20mADC signal output. There are mainly capacitive pressure transmitters and diffusion silicon pressure transmitters, ceramic pressure transmitters, strain gauge pressure transmitters, etc.

The dielectric pressure acts directly on the sensitive diaphragm, and the Wheatstone bridge composed of the resistors distributed on the sensitive diaphragm realizes the conversion of the pressure amount to the electric signal by the piezoresistive effect, and the millivolt signal generated by the sensitive component through the electronic circuit. Zoom in to an industry standard signal.

◆Technical parameters

◇ Measurement range: -0.1 ～ 0 ～ 0.002 ～ 60MPa

◇ Overload capability: 1.5 times full scale pressure

◇ Pressure type : gauge pressure, absolute pressure, negative pressure

◇ diaphragm material: alumina ceramic 316 stainless steel

◇Ο type ring: nitrile rubber, fluoro rubber

◇ Accuracy rating: 0.1, 0.2, 0.5

◇ Long-term stability: 0.2% FS/year

◇Environmental temperature effect: Within the specified operating temperature, the ambient temperature changes by 10 °C, the output changes ≤ ± 0.05% of the range, the annual drift < ± 0.3%

◇ Working temperature: -20 ~ 85 °C

◇ Storage temperature : -40 ～ 100°C

◇Protection rating: IP65

◇Power supply: 15 ~ 28VDC (24V DC recommended)

◇ Output: 4 ~ 20mA DC (two lines), 1 ~ 5V, 0.5 ~ 4.5V, 0 ~ 10V (three lines)

◇ load resistance: ≤ (U-15) / 0.02Ω

◇ Relative humidity: 95% non-condensing

◇ Process connection material: 316 stainless steel, 0Cr18Ni9 stainless steel