CRC®-77tHR Dose Calibrator

  • The CRC-77tHR calibrator’s performance and reliability have been designed to meet the unique and demanding needs of the isotope manufacturing and radiopharmaceutical production environments.
  • The software is designed for rapid repeatable measurement functions often required in production, and includes a fully automated Quality Assurance Program. Hardware is carefully designed to minimize the impact of high radiation fields upon electronics. A touch screen user interface provides a user friendly and efficient workflow.
  • Some features include a high activity range of over 400 Curies for Tc-99m, USB/PC communications, and pre-defined communication protocols for fast and easy system interface.

Ionization Chamber

  • Type: Thin wall, deep well, low pressure
  • Fill Gas: 1 atm Ultra Pure Argon

Measurement Range

  • Type: Auto Ranging
  • Activity: 15 TBq (400 Ci), max (Tc-99m).
  • Resolution: 0.01 MBq (10 μCi), max.
  • Energy: 15 keV to 3 MeV

Display Screen

  • Type: 8” VGA LCD color touch screen display
  • Format: Direct reading in Bq or Ci
  • Bq/Ci Reading: User selectable or fixed
  • Values Displayed: Nuclide name (Atomic symbol,

Mass number), calibration number


  • Accuracy: Better than ± 2%
  • Linearity: Within ± 2%
  • Response Time: Within 3 sec., 4 to 16 sec. for low

activity samples

Repeatability of Measurement

  • Repeatability: Within ± 1% within 24 hours, during

which time the calibrator is on all the time.


  • Diagnostics: Full test of program, system memories
  • Daily: Auto Zero, Auto Background Adjust, Data

Check, Accuracy and Constancy, Voltage Test

  • Enhanced: Linearity, Geometry

Nuclear Data

  • Nuclide Keys: 28 programmable keys

Standard Source Data

  • System Memory: Co-57, Co-60, Ba-133, Cs-137

Standard Sources

Additional Info

  • Display
  • Well counter
  • Display stand
  • Liner
  • Dipper
  • Power cable
  • 25 pin connector
  • Manual
  • Calibration certificate
Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts. Separated they live in Bookmarksgrove right at the coast