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micro-r-survey meter [ type : ur 705 ]  
Technical Data

Micro-R Survey Meter Type : UR 705 manufactured by NUCLEONIX SYSTEMS is primarily designed to measure low level Gamma and X-radiation. This Portable Survey Meter, designed around integrally coupled 1" x 1" NaI(Tl) Scintillator to a 1 1/2" PMT, will offer an optimum performance in counting Low-Level Gamma Radiation dose rate.

This unit can measure and display dose rates in the range of 0-10000 µR/hr on a dot matrix LCD Display. Dose rates close to natural background levels can be measured accurately.

This unit is ideally suitable for Radiometric and Environmental Radiation Monitoring involving low-level radiation dose rates.

This unit employs micro-controller based design and has number of unique features. User can store up to 1000 readings at the press of a button and can recall back, for visual indication on a dot matrix LCD display. This unit is provided with a built-in micro USB port (optionally) through which the stored data can be down loaded into PC.


  • Conforms to ANSI N42.17A performance specifications for Health Physics instrumentation (portable) & compliant.
  • Microcontroller based design.
  • Compact, elegant and light weight.
  • User can store upto 1000 readings.
  • Detects Gamma and X radiation.
  • Measures dose rate from 0-10000 µR/hr High Range (or) 0.01 to 99.99 µSv/hr.
  • Detector : 1" x 1" x 1 1/2" NaI (Tl) Detector probe assembly is built into the instrument enclosure box.
  • Micro USB port (built-in), Micro USB cable extra (Optional).
  • Built in audio.
  • Works on 6V DC dry cells.
(a) Nal (Tl) Scintillator, 1"d x1"h coupled to a Photomultiplier Tube. Detector assembly is inside the survey meter enclosure.
(b) External unit through 1mtr cable
Calibration Accuracy

(a) Better than +/-15% (specified with a Cs-137 standard source) from 100 µR/hr onwards
(b) within +/-20% upto 10000 µR/hr

Acquisition mode

CPS : 0-50000
CPM : 0-5000

Dose Rate (mode)

1-10000 µR/hr or
0.01-100.00 µSv/hr

Over Range

This instrument will show over range above the 10,000 µR/hr

Data Storage
Can store upto 1000 data readings. Stored data can be recalled back on to display.
Display Indication

Dot Matrix LCD display for dose rate / cum dose.

1 µR/hr or 0.01µSv/hr
Serial Port (optional)

Built-in micro USB port facilitates data down loading into PC. Data Communication Software with Micro USB connecting cable can be provided at extra cost as an additional option.

User Interface

START, STOP, PROG, STORE, INC, DEC, POWER ON command buttons for setting of parameters & operation of the instrument.


6 volts DC, BPL Excell or DURACELL ULTRA, Size AA, MN1500 LR6 (4 X 1.5 Volts), Alkaline cells.

106W x 196L x 100Ht in mm (Approx.)
Unit with detector (1" x 1" NaI) : 2kg
Plot No.162 A & B, Phase-II, IDA, Cherlapally, Hyderabad-500051 India Phone: +91-7207034546, +91-7331104481, 7331104482, Fax : 040 - 29706486.
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