Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Ranger Radiation Survey MeterHandheld α / β / γ / X-Ray Pancake GM Survey Meter
Handheld halogen-quenched pancake-GM survey meter with thin mica window — alpha, beta, gamma and X-ray detection from 10 keV up. Sensitivity 3,340 CPM per mR/hr referenced to Cs-137. USB data logging (Windows Observer software), optional Bluetooth to Android. The survey instrument for routine contamination checks, NORM screening and regulatory inspection work.
Key Features
- Halogen-quenched, uncompensated pancake GM tube with thin mica window (1.4–2.0 mg/cm² areal density)
- Detects alpha (≥ 2 MeV), beta (≥ 0.16 MeV), gamma and X-rays (≥ 10 keV) through the detector window
- Sensitivity 3,340 CPM per mR/hr referenced to Cs-137 — the standard calibration isotope for handheld survey meters
- Dose-rate ranges: 0.001 to 100 mR/hr; 0.01 to 1,000 µSv/hr; 0 to 350,000 CPM; 0 to 5,000 CPS
- Timed counts and total counts up to 9,999,999 — supports wipe-test counting and timed-survey workflows
All Features
- Halogen-quenched, uncompensated pancake GM tube with thin mica window (1.4–2.0 mg/cm² areal density)
- Detects alpha (≥ 2 MeV), beta (≥ 0.16 MeV), gamma and X-rays (≥ 10 keV) through the detector window
- Sensitivity 3,340 CPM per mR/hr referenced to Cs-137 — the standard calibration isotope for handheld survey meters
- Dose-rate ranges: 0.001 to 100 mR/hr; 0.01 to 1,000 µSv/hr; 0 to 350,000 CPM; 0 to 5,000 CPS
- Timed counts and total counts up to 9,999,999 — supports wipe-test counting and timed-survey workflows
- Mini-USB cable included; free Windows Observer USB software for data logging, trending, export
- Optional Bluetooth module + Android Observer BLE app — wireless survey + live mapping on a phone
- USB power OR two AA alkaline batteries (included); approximately 800 hours at background levels
- Compact handheld form factor for one-hand survey use
- NIST-traceable Cs-137 calibration with each unit; calibration certificate supplied
- Designed for NORM survey, scrap-metal screening, wipe counting, contamination surveys, regulatory inspection
- AERB-compliant deployment paperwork supplied; suitable for hospital radiation-safety programmes
Technical Specifications
| Detector | Halogen-quenched uncompensated pancake GM tube; mica window 1.4–2.0 mg/cm² |
| Radiation coverage | Alpha ≥ 2 MeV · Beta ≥ 0.16 MeV · Gamma and X-rays ≥ 10 keV |
| Sensitivity | 3,340 CPM per mR/hr (Cs-137 reference) |
| Dose-rate range | 0.001 to 100 mR/hr · 0.01 to 1,000 µSv/hr |
| Count-rate range | 0 to 350,000 CPM · 0 to 5,000 CPS |
| Timer / totals | Timed and total counts up to 9,999,999 |
| Power | USB OR 2 × AA alkaline (included); ≈ 800 h at background |
| PC connectivity | Mini-USB; free Windows Observer USB software |
| Wireless option | Optional Bluetooth module + Android Observer BLE app |
| Calibration | NIST-traceable Cs-137 calibration; certificate supplied |
| Compliance framework | AERB radiation-safety officer survey instrument expectations |
Applications
The pancake-GM workhorse for routine contamination and dose-rate surveys
Hot-lab daily contamination survey
Morning bench survey before the first dispensing run; afternoon-shift wipe counts; routine clean-room surface check. The pancake window picks up the low-energy beta emitters that a closed-tube probe misses.
NORM screening
Naturally Occurring Radioactive Materials surveys at customs, scrap metal yards and bulk material handling. The 10 keV photon threshold catches the U / Th decay products NORM monitoring expects.
Wipe-test counting
Timed wipe-test counts on sealed-source surveillance wipes for AERB-licensed sources. The 9.99-million-count totaliser supports the long count times low-activity wipes need.
Regulatory inspection work
AERB / state radiation-safety officers running facility inspections carry a Ranger for spot dose-rate readings, contamination checks and source-leak verification. The handheld form factor + USB log meet the inspection-paperwork demand.
Theranostic patient release
Lu-177 / I-131 patient discharge surveys — verify dose-rate at 1 m from the patient and at the room surface before release. The 1,000 µSv/hr ceiling covers the patient-discharge regime.
Scrap-metal and waste screening
Cyclotron / hot-lab waste characterisation before AERB-compliant disposal. The Ranger reads each container before it leaves the facility, with a USB-logged result that feeds the waste manifest.
Why Ranger Radiation Survey Meter?
The thin mica window admits photons down to 10 keV — that catches I-125 (35 keV), Tl-201 (70 keV) and the U / Th X-ray complex that NORM screening needs. A closed-tube survey meter that stops at 50–80 keV walks past those isotopes entirely.
Every reading streams to the Windows Observer software via mini-USB — date, time, location (manual or GPS-tagged), and the count or dose-rate value. The AERB inspection log is built from data, not from operator handwriting in a survey notebook.
800 hours on two AAs at background levels means the meter lives in the hot-lab bench drawer with no charging schedule. The radiation safety officer picks it up, surveys, drops it back. The instrument is available when the survey is needed.
Catalogs & Resources
Manufacturer product page. Contact Saxsons for AERB documentation, calibration scheduling and India pricing.
Ranger Survey Meter
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FAQ
Handheld radiation survey meter — questions we hear from Indian NM RSOs
Why every hot lab needs a survey meter, what the pancake GM detects that thick-window detectors miss, contamination sensitivity, and how the Ranger complements area monitors + personal dosimeters.
Q.Why does every hot lab and radiotherapy department need a handheld radiation survey meter?
Survey meters detect surface contamination and area dose rate — the two things the department has to verify before, during and after every hot-lab shift, therapy administration and spill-response event. AERB Safety Code for Nuclear Medicine Facility mandates surface-wipe surveys before releasing bench areas, dose-rate surveys around waste storage and generator elution stations, and post-therapy patient-room surveys. Without a working survey meter, there is no way to verify the department is not contaminated.
Q.What does the pancake GM tube read that other detectors don't?
A pancake GM tube has a thin mica window (typically 1.4–2 mg/cm²) that lets low-energy beta particles through — meaning it detects contamination from Tc-99m, F-18, Sr-90 / Y-90, C-14 and other beta-only or beta-plus-gamma isotopes that a shielded thick-window detector would miss. Ranger reads α / β / γ / X-ray in the same instrument. That is what makes it appropriate for both routine hot-lab wipe surveys and mixed-radionuclide spill response.
Q.Which contamination levels does the Ranger detect?
The pancake GM detects surface contamination at sub-Bq/cm² sensitivity for common radionuclides — below the AERB release limit for a decontaminated surface. Practical use: post-spill wipe surveys, morning-baseline bench surveys, patient-release surveys after I-131 therapy discharge, waste-container release surveys before biomedical-waste transfer.
Q.How does the Ranger differ from an area gamma monitor or a personal dosimeter?
An area gamma monitor is fixed to a wall and reads ambient dose rate at that location; a personal dosimeter is worn on the person and integrates dose over the shift. Ranger is handheld — the operator moves it across benches, surfaces, waste containers and patient areas actively looking for contamination. The three instruments are complementary; the department needs all three for the full AERB dossier.
Q.How is Ranger supplied and supported in India?
Distributed across India by Saxsons Group. Supply covers the survey meter, calibration certificate against NIST-traceable check source, applications training and annual re-calibration service. Imported under CDSCO Medical Devices Rules 2017.
Ranger Radiation Survey Meter supplier in India — Saxsons Group
Saxsons Group has supplied nuclear medicine equipment to over 1,000 Indian hospitals since 1988. Every consignment of Ranger Radiation Survey Meter ships with cold-chain logistics, AERB import documentation, CDSCO registration references and a Certificate of Analysis delivered before dispatch — the paperwork your radiation-safety and procurement teams need, pre-assembled.
- Nationwide delivery footprint — every metro and tier-2 city in India, scheduled to your treatment / procedure calendar.
- AERB & CDSCO documentation — import licence, radiation-safety paperwork and RSO briefing pre-assembled for the audit file.
- 40+ years in Indian oncology — long-standing supply relationships with AIIMS, Tata Memorial, and hundreds of tertiary-care centres.
- Single point of accountability — one purchase order, one delivery contact, one after-sales team across the whole product family.
Also supplied by Saxsons Group across India
The handheld survey meter for routine radiation-safety work
Contact Saxsons Group for Ranger survey meter supply, NIST-traceable calibration scheduling, AERB compliance paperwork and India training support.