|Ludlum Model 25 Personal Radiation Monitor.|
The Ludlum Model 25, Personal Radiation Monitor - Dosimeter/Ratemeter, is a small, lightweight and yet rugged
(shock proof and water resistant), alarming dosimeter. The Model 25 continuously monitors and alerts medical or
hazmat personnel to the presence of radiation while also keeping track of the accumulated dose. The dual audible and
visual alarms are adjustable over the entire display range.|
* Dose rate: 0.01 mR/hr to 1999 R/hr
* Dose: 0.01 mR to 1999 R
Calculated "stay-time" to the programmed alarm is displayed by pressing the Mode key. The Model 25 is also available in an "Intrinsically Safe" version for use in Hazmat or Surgical Applications, where explosive gasses may be an issue
The Model 25 may also be used for monitoring the (real-time) daily accumulated dose of pregnant employees in Nuclear Medicine departments and Radiology/Fluoroscopic environments throughout the medical center.
|A protective Rubber Case and Lanyard or Belt Clip are included.
DISPLAY RANGE: 0.01 mR/hr to 1,000 R/hr
DETECTOR: Internal energy-compensated GM
GAMMA SENSITIVITY: 18 cpm/mR/hr
ENERGY RANGE: 60 keV to 2 MeV
DISPLAY: 3 digit backlit LCD display with a total range from .01 mR/hr (or mR) to 1999 R/hr (or R), also displays time remaining from 19:59 to 00:01 (in hh:mm format)
ALARMS: Radiation alarms adjustable over entire range:
1. Dose rate alert
2. Dose rate (hi)
| 3. Accumulated dose alert|
4. Accumulated dose (hi)
5. Time remaining to allowed dose (hi)
6. Detector failure
7. Low battery notice when only 8 hours remain
ALARM INDICATIONS: Distinct alerts and alarms for exposure and accumulated dose
AUDIO: Built in speaker (typically 95 dB at 1 foot )
LOSS OF COUNT: Detector failure results in a visual and audible warning
CALIBRATION: Requires no tools or software when exposed to a traceable radiation field
POWER: 2 each lithium coin cell batteries
BATTERY LIFE: Typically 6000 hours
CONSTRUCTION: Injection-molded plastic housing with sub-surface printed membrane front panel, completely gasketed for water resistance. Supplied with rubber boot with built-in belt feed-through
TEMPERATURE RANGE: -40°F to 150°F (-40°C to 65°C)
SIZE: 3.0"H x 2.125"W x 0.687"D (7.6 cm x 5.4 cm x 1.7 cm)
WEIGHT: 5.1 oz including batteries
|Ludlum Quartz/Carbon Fiber Direct Read Pocket Dosimeters.|
The Classic Model AT series, Direct Read Quartz/Carbon Fiber Pocket Dosimeters are available in a variety of monitoring ranges. The Low energy Model AT-138 (0-200mR) may be used in Laboratory or Medical environments where gross accumulated dose measurements may be required for documentation of worker and visitor traffic in restricted areas.
RANGE: 0 - 200 µR
ENERGY RESPONSE: 16 keV to 2 MeV
RADIATION DETECTED: Gamma and x-ray from 16 keV to 2 MeV
ENERGY RESPONSE: See response curve
DETECTOR: Fiber electrometer mounted in an electrically conducting plastic ion chamber
DETECTOR HOUSING: Very low permeability plastic, hermetically sealed
|ACCURACY: Within 10% of true exposure|
RATE RESPONSE: Dose rate independent for gamma and x-radiation
ELECTRICAL LEAKAGE: Less than 0.5% of full scale for 24 hours at 50°C
TEMPERATURE RANGE: -4°F to 122°F (-20°C to 50°C)
RELATIVE HUMIDITY: Up to 90%
DIMENSIONS: Length: 4.5 in (12.4 cm), Diameter: 0.6 in. (1.5 cm)
WEIGHT: 1.0 oz. (25 grams)
FINISH: Barrel and end caps: Natural matte black; Clips: Color coded plastic (color signifies range) or metal clips
WARRANTY: 2 year limited warranty
Model AT909 Charger: (Part No. 51-2938) The 909 is a compact lightweight instrument designed to charge direct reading pocket dosimeters.
The Charger: (Part No. 51-2940) The Charger can zero a variety of quartz and carbon fiber dosimeters by squeezing the lever of a piezoelectric generator. This unit does not require batteries.
|Ludlum Pocket A/B/G Survey Meter.|
The Ludlum Model 2401-P pocket sized Alpha, Beta, Gamma Survey Meter is an economical, portable and easy to use
hand-held multipurpose survey meter. The 2401-P can be used for a wide range of Medical and Health Physics applications.
This meter is great for measuring low level surface contamination of beta emitting isotopes, or for locating dropped or
lost (therapeutic) seeds in the Radiology or Nuclear Medicine departments.|
INDICATED USE: Alpha, beta gamma survey.
RANGE: 0-15 mR/hr; 0 - 50,000 cpm.
DETECTOR: 2.1" (5.3 cm) diameter pancake GM.
SENSITIVITY: Typically 3300 cpm/mR/hr (137Cs gamma).
ENERGY RESPONSE: Energy dependent.
RESPONSE TIME: Typically 8 seconds from 10% to 90% of final reading
METER DIAL: 0-0.15 mR/hr; 0 - 500 cpm; BAT OK
POWER: 1 each 9 volt battery
BATTERY LIFE: Typically 250 hours with alkaline battery
SIZE: 1.8" H x 3.3" W x 5.3" L (4.6 x 8.4 x 13.5 cm)
WEIGHT: 0.9 lbs (0.4 kg) including battery
Optional Model 44-9 GM Pancake Probe
The Model 44-9's GM pancake type detector is arguably the most popular radiation detector used throughout the world. This detector is sensitive to alpha, beta and gamma radiation, is enclosed within a rugged metal enclosure, and is
|conveniently shaped and sized for checking contamination on people and objects. This detector operates between 85 to
1000 volts and is compatible with any Ludlum instrument capable of supplying 900 VDC and an input sensitivity of 30 mV
Other Similar Models
Model 44-40: Utilizes a lead housing to reduce background
Model 44-9-18: Incorporates a gooseneck type flexible end with an extension handle stretching to 36" in length
Alpha Beta Gamma Detector - Model 44-9-18 Specifications
INDICATED USE: Alpha, beta, gamma survey; sample counting
DETECTOR: Pancake type halogen quenched GM
WINDOW: 1.7 + 0.3 mg/cm2 mica
WINDOW AREA: 15 cm2 active, 12 cm2 open
EFFICIENCY (4pi): 5%-14C; 22%-90Sr/90Y; 19%-99Tc; 32%-32P; 15%-239Pu
SENSITIVITY (137Cs gamma): 3300 cpm/mR/hr
ENERGY RESPONSE: Energy dependant
BACKGROUND: 60 cpm
DEAD TIME: 80 microseconds
OPERATING VOLTAGE: 900 volts
CONSTRUCTION: Painted aluminum housing
SIZE: 1.8" H x 2.7" W x 23" L (4.6 x 6.9 x 58.4 cm) 36" fully extended
WEIGHT: 1.5 lb (0.7 kg)
|Fluke's Bleeper mR - Personal Radiation Monitor.|
The slim, compact Bleeper mR is the ideal personal monitoring device for alerting personnel to the presence of radiation in medical, industrial or research settings. It accurately measures and displays the radiation dose received.
The only control is a switch to turn off and reset the instrument, making Bleeper mR extremely easy to use. For added safety, the switch is recessed. An easy-to-read LCD Display provides a continuous indication of accumulated dose. The loud "BLEEP" sounds every 15-30 minutes on background and becomes more frequent as dose rate increases, becoming a continuous sound in high radiation fields. A series of quiet "clicks" indicates it is properly functioning. Bleeper mR is an enhanced version of the highly popular Bleeper III and utilizes the same proven technology.
Bleep rates for background radiation: Approx. 1 bleep every 15-30 minutes.
1 mR/h: approx. 1 bleep every 20 seconds.Energy Range: 45 keV to 6 MeV (±25%)
100 mR/h and above: continuous signal to at least 60 Sv/h (6000 R/h)
Dose rate response: Linear to 5 R/h (±20%)
Display: LCD 0.1 mR to 999,999.9 mR
Battery: Three alkaline batteries, size AAA. Typical battery life is 1 year.
Temp. Range: -4°F to + 122°F (-20°C to + 50°C)
Dimensions: 1.4(w) x 6"(d) (3.56 x 15.24 cm)
Display area: 0.6 x 0.9" (1.52 x 2.29 cm)
Weight: 0.25 lb (0.11 kg)
|Fluke's Bleeper III - Personal Radiation Monitor.|
Here is a simple, convenient instrument for alerting personnel to the presence of ionizing radiation. It provides a clear, audible indication of gamma and x-ray dose rates. No controls or adjustments are required.
The instrument operates continuously, giving a bleep every 15 minutes for normal background radiation, increasing with the dose rate to a continuous tone when high radiation doses are present. This compact unit slips easily into the pocket, where it is firmly held by a clip.
Sensitivity to background radiation: Approx. 1 bleep per 15 minutes.
1 mR/hr: approx 1 bleep per 20 seconds.Energy Range: 30 keV to 10 MeV
100 mR/hr and up: continuous signal (to at least 6000 R/hr)
Temperature Range: -4°F to 122°F (-20°C to +50°C)
Batteries: Two alkaline AAA. Battery life approx. 1 year
Construction: Plastic case with clip
Dimensions: 1 (w) x 5.5 (d) x 0.63" (t) (2.54 x 13.97 x 1.60 cm)
Weight: 0.17 lb (0.08kg)
|Fluke's Direct Reading, Pocket Dosimeters.|
Available in a wide selection of ranges, to meet all of your
Direct-Reading Pocket Dosimeters from Nuclear Associates are rugged, precision instruments designed specifically for measuring accumulated quantities of gamma and x radiation. In use, the dosimeter is normally clipped to a pocket or to the outside of a lead apron. By checking the dosimeter reading periodically, the wearer is able to determine the exposure received during specific procedures. By knowing where and when greater-than-normal exposures occur, the wearer can identify the source and take quick, corrective action. Nuclear Associates currently offers five dosimeters. Each dosimeter has a color-coded clip that signifies its range. This will help the user to identify the dosimeter (i.e. black clip= 0-200 mR, blue clip= 0-5R, etc.), and ensure that the intended dosimeter is utilized.
Nuclear Associates' Direct-Reading Pocket Dosimeters are extremely easy-to-use. To read the integrated exposure, the user looks through the dosimeter eye-piece while pointing the unit toward any external light source. The exposure is determined by the position of a hairline fiber against a graduated scale. A dosimeter Charger (model 06-912) is used to re-zero the dosimeter.
The 0-200 mR Low-Energy Dosimeter is the most popular type for measuring personal radiation doses in hospital
|applications including fluoroscopy, portable radiography and angiography. Our high-energy dosimeters are ideal for
nuclear medicine and health physics applications. All direct-Reading Pocket Dosimeters are hermetically-sealed using
state-of-the-art plastics and epoxy resins. These reliable, high-quality devices meet ANSI specifications N13.5 and
N322, as well as military requirements.|
Radiation Detected: Gamma and x-radiation from 20 keV to 2 MeV
Ranges: 0-200 mR to 600 R
Energy Response: See response curve below
160 keV to 2 MeV: ± 10%Accuracy: Within + or -10% of true exposure
40 keV to 160 keV: +20%, -10%
20 keV to 40 keV: +20%, -30%
Rate Response: Dose rate independent for gamma and x-radiation
Electrical Leakage: Less than 0.5% of full scale for 24 hours at 50°C
Relative Humidity: up to 90%
Detector: Fiber electrometer mounted in an electrically-conducting plastic ion chamber
Material: Detector Housing: Very low permeability plastics, hermetically-sealed. Clip: Glass fiber-filled, high-strength plastic
Dimensions: Length: 4.5 (12.4 cm); Diameter: 0.6 (1.5cm)
Weight: 1.0 oz (25 grams)
|Combo Dosimeter Charger and Storage Case Kit:|
Nuclear Associates' standard Dosimeter Charger (model 06-912) comes in a rugged leatherette-covered case that holds up to 12 dosimeters. A chart conveniently affixed inside the case permits quick identification of each dosimeter and its user. The charger can be easily removed for battery change.
Dimensions: 9-1/2" L x 5-1/4" W x 5" H
Weight: 5 lbs
For zeroing all direct-reading dosimeters. This transistorized unit has a power supply that "zeroes" all direct-reading dosimeters. One standard 1.5V "D" cell permits thousands of operations. A safety spring in the charging socket prevents damage from excessive pressure on the dosimeter. Protective cap keeps the socket free of dust and moisture when not in use. 4" x 4" x 3" high (l0cm x 10cm x 7.6cm) 2 lbs.