CRC 77tHR Dose Calibrator


The CRC®-77tHR’s performance and reliability have been designed to meet the unique and demanding needs of the high-activity 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 up to 400 Curies for Tc-99m, USB/PC Communications, and pre-defined communication protocols for fast and easy system interface.

Capintec offers a full line of related products to safely use the CRC-77tHR within your hot cell or hood environment.


  • Maximum Activity for the 77tHR is 400 Curies (15 TBq)
  • Radiation resistant design
  • Custom length liners and dippers available to match your hot cell dimensional requirements
  • 8” color VGA touch screen display
  • On screen display of Nuclide Name, Number, Activity, Unit of Measure and Calibration Number
  • Large character, high visibility display
  • Over 80 Nuclides with half-lives in memory
  • Full alpha numeric touchpad
  • Built-in dose calibration, quality control and self-diagnostics
  • Automated QC including constancy and linearity programs
  • Compatible with Nuclear Medicine Management Systems via USB
  • Optional printer for full size hard copy records
  • USB/PC Communications
  • Software upgrade via USB or Flash Drive
  • USB printer capability
  • Automated Geometry and Linearity Testing


  • Console Dimensions- Height: 42cm (9.5in); Width: 23cm (9.0in); Depth: 27cm (10.5in); Weight: 3.4kg (7.5lb)
  • Chamber Dimensions- Height: 43.8cm (17.25in); Diameter: 17.2cm (6.76in); Weight: 13.6kg (30lb); Well Diameter: 7.0cm (2.75in); Well Depth: 26.7cm (10.5in)
  • Cables- Power: 1.8m (6ft); Cable Length: 3.7m (12ft)
  • Ionization Chamber- Type: Thin wall, deep well, low pressure; Fill Gas: 1 atm Ultra Pure Argon
  • Measurement Range- Type: Auto Ranging; 15 TBq (400 Ci) max Tc-99m, 4.8 TBq (130 Ci) max F-18; Not recommended for activity measurements < 100 uCi; Resolution: 0.1 MBq (0.01 mCi); Energy: 15 keV to 3 MeV
  • Display Screen- Type: 8” VGA LCD color touch screen displayFormat: Direct reading in Bq or CiBq/Ci Reading: User selectable or fixedValues Displayed: Nuclide name (Atomic symbol, Mass number), calibration number; Format: Direct reading in Bq or Ci; Bq/Ci Reading: User selectable or fixed; Values Displayed: Nuclide name (Atomic symbol, Mass number), calibration number
  • Electrometer- Accuracy: Better than ± 2%Linearity: Within ± 2%Response Time: Within 3 sec., 4 to 16 sec. for low activity samples; 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.
  • Tests- 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
  • PC Port- Interface: USB; Compatibility: Standard Nuclear Medicine Management Systems
  • Printer (Optional)- Interface: USB; Type: HP Inkjet; Printing Options: Full size test reports
  • Power Requirements- 100-240 VAC (50/60Hz) 180 mA


  • Console Dimensions: Height: 42cm (9.5in); Width: 23cm (9.0in);  Depth: 27cm (10.5in);  Weight: 3.4kg (7.5lb)
  • Chamber Dimensions: Height: 43.8cm (17.25in);  Diameter: 17.2cm (6.76in);  Weight: 13.6kg (30lb); Well Diameter: 7.0cm (2.75in);  Well Depth: 26.7cm (10.5in); Cable Length: 3.7m (12ft)
  • Cables: Power: 1.8m (6ft);  Printer: 1.8m (6ft)

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