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Compliance with local safety regulations for electrical and electronic equipment is recommended.
Precautionary measures for safe and reliable operation, including handling, environment, and damage assessment.
Instructions for proper disposal of old electronic equipment, advising against municipal trash.
Summary of Kistler Type 9212 high impedance, charge mode load cells, referring to data sheets.
Definitions of special designations and terms used in the manual, like Fs and pC.
Lists the supplied mounting studs for Type 9212, including item description and part number.
Explains how piezoelectric load cells convert force into electric charge using quartz elements.
Describes the requirement for an external charge amplifier and low noise cable for high impedance load cells.
Emphasizes care during installation for optimal accuracy and reliability.
Details requirements for mounting surfaces, including flatness, roughness, and parallelism.
Guides on using supplied studs, tapping holes, and ensuring proper contact for mounting.
Discusses the high impedance requirement, insulation levels, and the role of charge amplifiers.
Details the function and types of charge amplifiers used with high impedance load cells.
Explains the internal workings of a charge amplifier, including its components and signal conversion.
Lists and describes various Kistler charge amplifier models available for compatibility.
Highlights the importance of low noise cables and maintaining insulation resistance for signal integrity.
Explains causes of drift in charge amplifier output and corresponding remedies.
Provides a procedure for starting up load cells with charge amplifiers, including adjustments.
States that load cells are hermetically sealed, precluding internal maintenance, and external cleaning is important.
Guides on troubleshooting load cell problems, focusing on cables and drift issues.
Informs that field repair is not possible and instructs to return the load cell to the factory.
Provides instructions for cleaning the load cell enclosure and transducer using appropriate materials.
Explains load cell calibration by direct comparison to a traceable standard and mentions calibration services.
Compliance with local safety regulations for electrical and electronic equipment is recommended.
Precautionary measures for safe and reliable operation, including handling, environment, and damage assessment.
Instructions for proper disposal of old electronic equipment, advising against municipal trash.
Summary of Kistler Type 9212 high impedance, charge mode load cells, referring to data sheets.
Definitions of special designations and terms used in the manual, like Fs and pC.
Lists the supplied mounting studs for Type 9212, including item description and part number.
Explains how piezoelectric load cells convert force into electric charge using quartz elements.
Describes the requirement for an external charge amplifier and low noise cable for high impedance load cells.
Emphasizes care during installation for optimal accuracy and reliability.
Details requirements for mounting surfaces, including flatness, roughness, and parallelism.
Guides on using supplied studs, tapping holes, and ensuring proper contact for mounting.
Discusses the high impedance requirement, insulation levels, and the role of charge amplifiers.
Details the function and types of charge amplifiers used with high impedance load cells.
Explains the internal workings of a charge amplifier, including its components and signal conversion.
Lists and describes various Kistler charge amplifier models available for compatibility.
Highlights the importance of low noise cables and maintaining insulation resistance for signal integrity.
Explains causes of drift in charge amplifier output and corresponding remedies.
Provides a procedure for starting up load cells with charge amplifiers, including adjustments.
States that load cells are hermetically sealed, precluding internal maintenance, and external cleaning is important.
Guides on troubleshooting load cell problems, focusing on cables and drift issues.
Informs that field repair is not possible and instructs to return the load cell to the factory.
Provides instructions for cleaning the load cell enclosure and transducer using appropriate materials.
Explains load cell calibration by direct comparison to a traceable standard and mentions calibration services.
The Kistler Type 9212 load cells are high impedance, charge mode sensors designed for measuring dynamic and short-term static forces, including both compression and tension. These compact, sensitive, and fast-response sensors are characterized by their rugged quartz force-sensing element, which ensures long-term stability. They offer wide measuring ranges and a quasi-static response, operating across a broad temperature range of -240 to 150 °C [-400 to 300 °F].
Kistler load cells utilize a self-generating piezoelectric sensing element, specifically precision-cut quartz, to convert force into an electrical charge. The charge produced by the load cell is directly proportional to the force applied to the internal piezoelectric element. Unlike passive strain gauge sensors that require excitation, these load cells are active or self-generating. As high impedance devices, they necessitate an external charge amplifier and low-noise cabling for proper operation. The sensitivity of these load cells is expressed as the ratio of electrical output to applied force (e.g., -pC/lbf or -pC/N).
The charge amplifier acts as a charge integrator, compensating the load cell's charge with an equal magnitude and opposite polarity to produce a voltage across a range capacitor. This process converts a high impedance charge into a low impedance voltage. Typically, a negative charge at the amplifier's input results in a positive output voltage, which is why charge mode sensors often indicate a negative output. The charge amplifier's design incorporates a high-gain inverting voltage amplifier with a MOSFET or JFET at the input to achieve high insulation resistance. The system's time constant (TC = R * C_r) influences the discharge rate of the range capacitor, affecting low-frequency response and usable measuring time. Drift in a charge amplifier can be caused by low insulation resistance at the input or internal leakage current of the input MOSFET or JFET.
General| Brand | Kistler |
|---|---|
| Model | 9212 |
| Category | Measuring Instruments |
| Language | English |
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