Product features            ① Using ceramic thick film integration technology, excellent performance, small size, flexible packaging            ② Corrosion resistance, no isolation, direct contact, measurement of corrosive media            ③ As an ideal pressure sensing element, it is easy to integrate with transmitter electronic circuit            ④ High reliability, good stability, low cost, mass production            ⑤ Meet the requirements of EU Directive 2002 / 95 / EC on the limitation of toxic and hazardous substances            Application scope            Automobile air conditioner            Air compressor            Water pressure level            Oil pressure            Environmental temperature conditions            Working temperature range: - 40 ℃ ~ + 135 ℃            Storage temperature range: - 40 ℃ ~ + 150 ℃            Main parameters            Power supply voltage: 5 ± 5% VDC            Power supply current: < 10mA            Static measurement capacitance: 6-12 PF            Measurement capacitance variation: ≥ 1.5 PF            Linearity, hysteresis and repeatability: < 1.0% VFS (- 40 ℃ ~ 135 ℃)            Temperature drift: < 0.025% / VFS / ℃ (- 30 ℃ ~ 120 ℃)            Mechanical characteristics            The corresponding relationship of pressure range specification, overload pressure and failure pressure is shown in Table 1.            Pressure range (bar)            Overload pressure (bar)            Failure pressure (bar)            0…… ten            fifteen            twenty-five            0…… twenty            thirty            fifty            0…… thirty            forty-five            seventy-five            0…… fifty            seventy-five            one hundred and twenty-five            Material characteristics            Contact medium material: ai2o3-96%            Pad: PDAG            Weight: about 3G            External dimension and pin function            The function of circuit pin is shown in Table 2. Table 2            Pin number            Function description            one            Common terminal of measuring capacitance and reference capacitance            two            Reference capacitor terminal            three            Measuring capacitance terminal            Product naming principle and order number            Cyr (product model) - HJ ×× (pressure range, bar)                        For example:            Cyr-hj030 → thick film capacitive ceramic pressure sensor with pressure range of 30 bar