Radiation Monitoring Instruments (RMIs)

Survey Meters

What it does:

Portable, handheld devices (typically Geiger-Müller counters or Pressurized/non pressurized Ion Chambers) used to detect and measure ambient ionizing radiation fields. They provide instantaneous readings of dose rate (e.g., mR/hr or µSv/hr) to identify the presence and intensity of radiation.

Need:

Essential for routine surveillance, locating lost sources, checking shielding integrity, and ensuring that radiation levels in public and occupational areas remain within safe limits.

Radimage's Calibration Role:
  • Regulatory: Calibrated to ensure response linearity and energy dependence meet AERB safety codes.
  • Process: Radimage exposes the meter to known standard radiation fields (Co-60) to verify its reading accuracy across its entire measurement range.

Pocket Dosimeters (DRD - Direct Reading Dosimeters)

What it does:

Small, pen-sized devices worn by personnel to measure the accumulated radiation dose over a specific period (e.g., a work shift). They can be analog (quartz fiber) or digital (electronic personal dosimeters).

Need:

Provides immediate feedback to the wearer about their total exposure, allowing them to manage their time in radiation fields to prevent overexposure (ALARA principle).

Radimage's Calibration Role:
  • Regulatory: Mandatory to ensure the device accurately records accumulated dose without significant "leakage" (drift) over time.
  • Process: Radimage tests for electrical leakage (self-discharge) and response accuracy by exposing the dosimeter to a known dose and comparing the displayed value.

Area Monitors (Zone Monitors)

What it does:

Fixed, wall-mounted detectors placed in strategic locations (e.g., near Cobalt machines, Linac bunkers, Brachytherapy rooms, Hotlabs, Cyclotron Centres, power plants etc). They continuously monitor radiation levels and trigger visual/audio alarms if levels exceed preset thresholds.

Need:

Acts as a safety interlock system to warn staff of high radiation levels before they enter a controlled zone, preventing accidental exposure.

Radimage's Calibration Role:
  • Regulatory: Ensures the alarm set-points function correctly during radiation emergencies.
  • Process: Radimage calibrates the detector response and verifies the functionality of the exposure rate, alarm logic and remote indicators.

Survey cum Contamination Monitors

What it does:

Versatile hybrid instruments equipped with external probes (or internal switching) capable of measuring both ambient dose rates (like a survey meter) and surface count rates (contamination).

Need:

Cost-effective solution for facilities requiring both area monitoring and spill detection, such as smaller radioisotope labs or transport agencies.

Radimage's Calibration Role:
  • Regulatory: Requires dual-calibration verification—one for dose rate accuracy (Sv/hr) and one for count rate efficiency (CPS/CPM).
  • Process: Radimage verifies the instrument's response to both gamma fields (dose) and beta/alpha sources (contamination).

Contamination Monitors

What it does:

Specialized instruments with large surface-area probes (pancake GM or scintillator) designed to detect radioactive material deposited on surfaces (clothing, skin, workbenches, floors).

Need:

Crucial for infection control in Nuclear Medicine and identifying radioactive spills. It prevents the spread of radioactive material outside controlled areas.

Radimage's Calibration Role:
  • Regulatory: Must quantify detection efficiency for specific isotopes used in the facility (e.g., I-131, Tc-99m).
  • Process:We determine the instrument's detector efficiency and provide a conversion factor using large-area planar standard sources (Am-241, Sr-90, etc.) to ensure contamination detection.
You may fill out the form directly, or download the form, complete it, and send it to radimagehealthcare@gmail.com

RMI CALIBRATION REQUEST FORM

AERB Approved & NABL Accredited Laboratory (ISO/IEC 17025:2017)

Please complete all sections. Incomplete forms may delay processing.
(Please use separate form for each instrument)

1. Customer Details
2. Instrument Details
3. Calibration History
+ Add More Instruments
4. Declarations & Terms
1. Customer Declaration:

I hereby declare that the instrument submitted for calibration is in the condition as marked above (Working / Not Working). In case the instrument is not working, the reason has been clearly specified.

2. Terms & Conditions:

Calibration will be performed in accordance with ISO/IEC 17025:2017 methods and procedures (ISO.org). NABL accreditation requirements (nabl-india.org) and AERB safety guidelines. Radimage Healthcare reserves the right to refuse calibration of instruments not meeting safety or technical criteria.

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Get In touch

Radimage Healthcare India Pvt. Ltd.

Contact Detail

Unit 1 : G-236, Sector-63, Noida - 201303

0120-4263270

Calibration Facility for: Radiation Monitoring Instruments and Dose Calibrators

Unit 2 : 503, Udyog Kendra II, Ecotech 3, Greater Noida - 201306

0120-4112417

Calibration Facility for: SSD Teletherapy and Brachy Well Chambers

radimagehealthcare@gmail.com, radimagecallab@gmail.com

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