IC101 - Precision Electrometer Digital Current Integrator with High Voltage

The IC101 is designed to measure charge or currents ranging from pA to μA, generated by ionization chambers. It employs a classic charge integrator circuit, ensuring a wide dynamic range without compromising accuracy. Its compact dimensions and long-range remote-control capabilities make it ideal for use in close proximity to the signal source, even in high vacuum or high voltage environments.

An integrated high-voltage source within the IC101 enables chambers with large electrode spacing to receive the appropriate bias. Moreover, the device's versatility allows it to measure outputs from other instruments, such as proportional chambers or photodiodes. The IC101 can function as a stand-alone unit or be integrated seamlessly into larger control systems.

Due to its integrator-type design, the IC101 is particularly suited for pulsed signals or very small DC currents. For higher current applications, consider the F460 as an alternative option.


  • Dynamic range <1 pA to 200 µA
  • Integrated digitization and filtering
  • Fiber-optic, RS-232 and RS-485 interfaces
  • Integrated calibration test source
  • Full control provided of integration modes
  • External trigger capability
  • Analog monitor output
  • Frequency monitor output (VFC)
  • Optional 3 kV high voltage output for ionization chamber biasing
  • Highly compact design


  • Ionization chamber electrometer
  • Faraday cup electrometer
  • Low current and charge measurement

Fiber Optics

Measurement data is transmitted through state-of-the-art fiber-optic cables. The benefits are numerous compared to other forms of data transmission.

  • Fiber-optics are immune to electrical interference
  • Minimal attenuation of light through fibers
  • Fast messaging over enormous distances
  • Radiation hard fiber materials
HV emco

Integrated High Voltage

  • Avoids the need for a separate external HV supply.
  • Precise programmable voltage control.
  • Choice of polarity, positive or negative, and range up to 3000V depending on the product.
  • Shared ground with measurement electronics to eliminate ground loops.
  • Short circuit protection and redundant output voltage monitoring.

IG2 EPICS Support

Integrate device data collection and configuration into an EPICS system, without writing a single line of code using IG2.

  • Runs on Windows and Debian Linux
  • Change PV names with simple XML configuration
  • Connect to multiple Pyramid devices at once
  • Add custom scale factors and offsets on a PV basis
  • Never have to recompile
  • Professional Pyramid support for bugs and features


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