$141 monthly/$47 weekly
A one-time setup/calibration charge in addition to rental rate noted above may also apply. When this applies, you’ll be informed of the amount of the additional charge at time of order or, if requested, prior to placement of order.
- Large Area (584cm²) Gas Proportional Detector
- Typically Used with Ludlum 239-1F Floor Monitor
- Designed for Alpha/Beta Surveys
- Uses P-10 Counting Gas
- Standard Mylar Thickness of 0.8 mg/cm² (note: alternate mylar thickness available upon request via Customer Requirements box on check-out page)
RECOMMENDED COUNTING GAS:
P-10 (10% methane, 90% argon); other counting gases are also acceptable
GAS RECHARGE:
Will operate on a static charge for over 15 hours with a 39" cable
WINDOW:
Alpha - Typically 0.8 mg/cm² aluminized mylar (2 layers of aluminized mylar)
Beta/Gamma - 3.4 mg/cm² (1 layer of aluminized mylar and 1 layer of clear mylar)
Gamma - 11.8 mg/cm² (1 layer of aluminized mylar and 1 layer of drafting mylar)
WINDOW AREA:
Active - 584 cm²
Open - 430 cm²
EFFICIENCY (4pi geometry):
Gross Counting:Typically 40% - 239Pu (alpha only); 60% - 99Tc (beta only); 60% - 90SR/90Y; less than 1% gamma
Alpha-Beta Counting: 35% - 239Pu; 40% - 99Tc; 40% - 90SR/90Y; less than 1% gamma
BACKGROUND:
Alpha - Less than 10 cpm (when operating on the alpha only plateau region)
Beta/Gamma - Typically 800 - 1300 cpm (10 microR/hr field)
OPERATING VOLTAGE:
Alpha - Typically 1100 - 1400 volts
Beta-gamma - Typically 1700 - 1800 volts
COUNTER THRESHOLD SETTING:
Typically 4 mV for scaler or gross counting instrument
GAS CONNECTORS:
Double-end quick disconnect
CONNECTOR: Series "C"
SIZE:
1"(2.5cm)H (not including fittings) X 6.25"(15.9cm)W X 18.25"(46.4cm)L
WEIGHT:
4.1 lbs (1.9kg)
