Vibro-meter CP235 143-235-000-012 Piezoelectric Pressure Transducer

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—— Product Information ——

The CP235 143-235-000-012 piezoelectric pressure transducer is a high-quality, high-reliability dynamic pressure sensor with a piezoelectric sensing element that provides a charge output. Accordingly, an external charge amplifier (IPC704 signal conditioner), is required to convert this charge-based signal into a current or a voltage signal.
The CP235 143-235-000-012 is designed and built for long-term use in extreme environments characterised by high temperatures and/or hazardous areas (potentially explosive atmospheres).

Features
Designed for the long-term measurement of pressure pulsation in extreme environments, such as gas turbine combustors
Very high sensitivity: 750 pC/bar
High operating temperature: up to 520 °C
Available in different integral mineral-insulated (MI) cable lengths, terminated with a high-temperature connector
Certified for use in potentially explosive atmospheres

—— Technical Specifications ——

Manufacturer: Vibro-meter
Product Numbers: CP235 143-235-000-012
Product Type: Piezoelectric Pressure Transducer 
Place of 0rigin: Switzerland
General
Input power requirements : None
Signal transmission : 2-pole system insulated from casing, charge output
Signal processing : Charge converter
Operating
(at +23°C ±5°C) Sensitivity (at 2 Hz) : 750 pC/bar (52 pC/psi) min.
Static pressure (on sensing head) : 0.1 to 20 bar
Dynamic measuring range (random) : 0.00005 to 5 bar nom.
Overload capacity (spikes) : Up to 100 bar (1450 psi) (static + dynamic components)
Linearity : ≤±1% over dynamic measuring range
Acceleration sensitivity
10 Hz to 2.5 kHz : ≤0.15 pC/g (0.0002 bar/g, ≤0.0029 psi/g)
2.5 kHz to 5 kHz : ≤0.375 pC/g (0.0005 bar/g, ≤0.0073 psi/g)
Resonant frequency : >55 kHz (along sensitive axis)
Frequency response : 2 to 10000 Hz ±5% (lower cut-off frequency is determined by the charge converter used)
Capacitance (nominal)
Pole to pole : 700 pF for transducer + 200pF/m for cable
Pole to casing : 10 pF for transducer + 300 pF/m for cable
Internal insulation resistance : Min. 10⁹ Ω (5x10⁴ Ω at 520°C)
Mounting torque : Nominally 5.5 N•m (corresponding to qualification of product). Maximum value of 10 N•m. Note: A hole (Ø1) is provided for locking wire. See Mechanical drawings.
Environmental
Temperature range : −55 to +520°C (−67 to 968°F) continuous operation
Shock acceleration : ≤1000 g peak (half sine-wave, 1 ms duration) along sensitive axis
Corrosion, humidity : INCONEL® 600, hermetically welded

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