Dosimetry Systems

Pressurized Ion Chamber Survey Meter

Radiation Detected: x-rays & gamma above 25 keV, beta above 1 MeV
Rate Mode: autoranging, 0-500 μR/h, 0-5 mR/h, 0-50 mR/h, 0-500 mR/h, 0-5 R/h
Integrate Mode: autoranging, 0-500 μR, 0-5 mR, 0-50 mR, 0-500 mR, 0-5 R
Accuracy: within 10% of reading between 10% and 100% of full scale indication on any range, exclusive of energy dependence
Detector: 300 cc ionization chamber pressurized to eight atmospheres or 125 psi
Response Time (10% to 90%): 5 seconds on 0-500 μR/h, 2 seconds on 0-5 mR/h and 1.8 seconds on all other scales
Display: liquid crystal display indicates values in 21/2 digits, a 6.4 cm wide analog 100-element bar graph, units of measurement, and operating status
Power: two 9-volt alkaline batteries, NEDA 1604, provide 200 hours of continuous operation

Instrument can operate on one battery to permit uninterrupted integration when batteries are changed one at a time.

Radiation Detected: x-rays & gamma above 7 keV, beta above 100 keV
Rate Mode: autoranging, 0-5 mR/h, 0-50 mR/h, 0-500 mR/h
Integrate Mode: 0-5 mR, 0-50 mR, 0-500 mR, 0-5 R, 0-50 R
Accuracy: within 10% of reading between 10% and 100% of exclusive of energy dependence, calibrated to Cs-137
Detector: ion chamber, 349 cc volume, 1/4 mil mylar window 1.7 mg/cm², protected by thin steel mesh, phenolic wall of 246 mg/cm² plus beta slide 440 mg/cm²thick
Response Time: 8 seconds on 0-5 mR/h, 2.5 seconds on 0-50 mR/h, and 2 seconds on all other scales.
Display: auto-on backlit liquid crystal display uses 2 1/5 digits to indicate values, and a 6.4 cm wide 100 element bar graph, units of measurement, and operating status
Power: two 9-volt alkaline batteries, NEDA 1604A, provide 200 hours of continuous operation

Instrument can operate on one battery to permit uninterrupted integration when batteries are changed one at a time.

Accuracy: ±0.1% of reading, +1 digit
Linearity: ±0.1%, +1 digit or precision of reading, whichever is greater
Timer: (1150 only) can be preset for 50, 100 or 200 seconds
Leakage: < 5 x 10-14A
Long Term Stability: < ±0.5% per year all scales except 20,000 nC scale which is ±1.5% per year
Display: 4-1/2 digit LCD
Temperature Stability: 20 ppm/°C
Warm-up Time: 15 minutes
Input: triaxial BNC (TNC optional)
Output: analog, 2V corresponds to full scale
Bias: internal electronic bias supply 300 V, -50%,-100%, off, +100%, +50%, selectable on back panel. Bias voltage may be read on display. 400 V bias potential also available.
Power: internal rechargeable 12 V sealed lead acid battery, voltage maybe read on display. Low battery indicator on front panel. 120 VAC UL listed adapter provided.
Dimensions: 21 cm wide x 22.9 cm deep x 8.25 cm high (8.25 in x 9 in x 3.25 in)
Weight: 1.7 kg (3.75 lb)