Ludlum 239-1F

Ludlum 239-1F

$225

Floor Monitor Cart, Gas Proportional Probe, and Ludlum 2221 or 2360 Detector

Gas proportional (582cm2 active area) used for floor / surface contamination monitoring. Must be charged with P-10 counting gas. The price includes cart, meter, probe and regulator. User must provide P-10 gas cylinder.

Weekly Price: $225   Monthly Price: $475
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Description

The Model 239-1F Floor Monitor is a gas proportional floor monitor detector mounted on a roll-around cart. The instrument features a flow system, quick-connects, a gas bottle mount, and a means to adjust the height of the detector from the floor for optimum performance. A nuclear counting gas bottle, gas regulator, and a survey instrument are required for the operation of the floor monitor. This unit is supplied with the Model 12 Analog Ratemeter. Specify detector upon ordering.

Floor Monitor Cart, Gas Proportional Probe, and Ludlum 2221 or 2360 Detector
Gas proportional (582cm2 active area) used for floor / surface contamination monitoring. Must be charged with P-10 counting gas. The price includes cart, meter, probe and regulator. User must provide P-10 gas cylinder.

Specifications

INDICATED USE: Floor Monitoring for Alpha, Beta Gamma
DETECTOR: Gas proportional
RECOMMENDED COUNTING GAS: P-10 (10% methane; 90% argon)
BOTTLE SIZE: Typically used with Matheson size 2 or Linde Q
WINDOW: 0.8 mg/cm2 aluminized mylar (window thicknesses of 0.4, 3.9, or 7.9 mg/cm2 are available)
ACTIVE AREA: 584 cm2
OPEN AREA: 425 cm2
EFFICIENCY (4pi): 17%-239Pu; 25%-90Sr/90Y; gamma – less than 1%
GAS RECHARGE: Will operate on static charge for 2 hours
SUGGESTED INSTRUMENTS: Typically used with Model 12, 2221, 2224-1, 2350-1 or 2360
DETECTOR HEIGHT: Adjustable from 0.125″- 3″ (0.32 – 7.6 cm) from surface
DETECTOR OPERATING VOLTAGE:
Alpha: Typically 1000 – 1200 volts
Beta Gamma: Typically 1600 – 1800 volts
THRESHOLD: Typically 2 – 4 mV
FLOW METER:
IN – Adjustable from 0 – 100 cc/min
OUT – Flow indicator from 0 – 100 cc/min
GAS CONNECTORS: Double end quick disconnect for 0.25″(0.6 cm) OD tubing
GAS CONSUMPTION: Typically 50 cc/min
CONSTRUCTION:
DETECTOR: Anodized aluminum housing with stainless steel hex protective screen (79%open)
CART: 1″ square tubular steel and aluminum with beige powder coat paint, 7.5″ (19.1 cm) diameter rear wheels, and 4″ (10.2 cm) diameter swivel casters
DETECTOR SIZE: 0.8″ H x 6.3″ W x 18.3″ L (2 x 16 x 46.5 cm)
CART ASSEMBLY: 42″ H x 16″ W x 27.5″ L (106.7 x 40.6 x 69.9 cm) (excluding detector)
WEIGHT: 25 lbs (11.4 kg), excluding gas bottle and counting instrument