Model PTG-7RN Radon Monitor

The PTG-7RN Radon Monitor is a sensitive, rugged, portable instrument for detection and measurement of airborne radon. The subtractive balanced chamber electro - meter circuit decreases background effects to negligible levels and its de-ionized and filtered intake reduces spurious effects from smoke, dust and existing ionization in the air to negligible levels. Inlet and outlet hoses allow monitoring interiors of fume hoods, exhaust stacks, etc. The PTG-7RN will measure airborne radon as free radon gas (with or without Radon Daughters at users option) as low as 1 Bq/m³.

All instruments are calibrated at the factory. Calibration check may be performed in the field with a micro Curie level beta-gamma source. Chambers may be switched to additive operation to check linearity of response on a gamma calibration range. User friendly calibration controls are provided. 

 Figure 1: Portable PTG-7RN Radon Detector; top view, inside view, side view

FEATURES:

• 5 x 10^-11 µCi/cc (2 Bq/m³) in 1 hour
• 2 x 10^-9 µCi/cc (74 Bq/m³) in 1 min
• 3 x 10^-8 µCi/cc (1000 Bq/m³) in 5 sec
• USER SETTABLE UNITS - PicoCi/ml or Bq/m³ etc.
• OR TOTAL DAILY DOSE IN milliCuries or MBq etc.
• WIDE RANGE - DIGITAL ACCURACY
• PROGRAMMABLE DIGITAL READOUT
• SENSITIVE FOR OCCUPATIONAL EXPOSURE
• DYNAMIC BACKGROUND COMPENSATION
• PORTABLE
• CAN ACTUATE OPTIONAL DIGITAL PRINTER
• BATTERY OPERATION
• BUILT-IN HIGH LEVEL ALARM
• BUILT-IN LOW FLOW ALARM
• BUILT-IN RS-232 COMPUTER INTERFACE
• USE WITH PORTABLE PC AS 1 YEAR DATA BUFFER

SPECIFICATIONS:

• Ranges: Large, easy to read digital LED readout. Two ranges cover six decades: 2 x 10^-9 to 2.0 x 10^-3 µCi/cc (74 Bq/ml to 74 MBq/ml.)
• Background: Essentially eliminated by subtractive balanced chambers.
• Smoke, Dust and Ion Elimination: Filter and deionizer reduce effects to negligible level.
• Circuit: Electrometer circuit amplifies net difference between a two liter radon internal chamber and a sealed background chamber of similar configuration.
• Alarms: Low Air Flow and Alarm High Level Alarm: Red Lamps and Audio Alarm.
• Controls: Front Panel Off-On range switch calibrate switch. Alarm set button, alarm reset button.
• Calibration: Can calibrate internally with radon gas, or on a calibration course, or (at a single point) with optional beta-gamma source.
• Printer: DB-9 Plug is furnished for optional external serial printer.
• Computer Port: RS-232 serial port is built in (fully addressable).
• Portability: PTG-7RN is provided with carrying handle and optionally with loops for shoulder sling.
• Case: Deep drawn aluminum case, with handle and gasketed lid, easily clean-able anodized finish.
• Dimensions: (Including handle) 9''W x 16''L x 14-1/2'' Tall.
• Front Panel: 15-1/4'' Long x 8-1/4'' Wide.
• Battery: 12V 7 A/hr rechargeable sealed. Panasonic LCR12V1 BPN or equivalent.
• Battery Life: 20 hours between changes. Battery charger is built-in.
• Weight: 18 lbs. Shipping weight 26 lbs.
• ACCESSORIES and OPTIONS: 
  RAL-3A: Remote Alarm (audible & visual) Model #RAL-3A (including 25 ft. of cable). Can be used to 500 ft.
  iServe-7: Built-in internet / Ethernet server.
  HTR-7: Heated Ion Chambers
  WIN-W: Win-Wedge data logging software for users portable PC.
  MPM-40DT: Serial Printer with date and time stamp.
  Case: 19'' rack mount type.
  PTG-7LRN-BAT: Battery Back-up (PTG-7LRN)