Nuclear Residue Detector Cum Radiation Alarm (NRD)

The Nuclear Residue Detector cum Radiation Alarm (NRD) is designed to alert you of the presence of dangerously high levels of material emitting Gamma rays / X-rays, by producing an audible alarm. The approximate radiation exposure is indicated by the rate at which the NRD emits the alarm inform of a ‘chirp’.

Small enough to attach to a key chain. The device is an ideal solution for increasing individual security by giving an alert of radiological threats. Higher the radiation, more the ‘chirps’ / alarm. The device has a long life of more then 8 years without change of battery.

The device is ‘ON’ 24/7, non-stop and will promptly warn you of the presence of unseen, but acutely dangerous levels of radiation of gamma rays.

The device is made and patented in USA.

 
TECHNICAL SPECIFICATIONS
 
Nuclear Residue Detector cum Radiation Alarm Specifications

Radiation Detected

Gamma & X-ray radiation: 20 KeV to 2 + MeV

Detection Range

100 mR/hr to 5,000 R/hr

Sensitivity

100 mR/hr to 50 R/hr indicated in 10 ranges

Proportional Increasing Chirp Rate/alarm rate

50 R/hr to 5,000 R/hr

Indication

Repeating groups of rapid countable chirps

Operational indicator

faint "ticking" = operating OK.

Alarm loudness

~ 61 dBA (speaking volume)

Durability Functional after 6' drop or submersion to 6'

Battery

Operational Life Expectancy @ room temp:
- Non-alarming (normal operation) - 10 years
- Alarming continuously at single chirp level - 3 years
- Alarming continuously at highest alarm level - 3 months

Detector

Patented CdS photo resistor coupled to a rare earth phosphor scintillator

Housing

hermetically sealed, radiation transparent, abrasion resistant ABS plastic

Accuracy

Within +/- 1 chirp

Response Time

Dose rate dependent:
~3 - 4 min. @100mr/hr
seconds @ R/hr ranges

EMP immunity

Meets MIL-STD-461D, RS105

Over range survivability

Functional after 5K R/hr for 2hr.

Temperature Range

-20 C  to  +55 C

Warranty

One year, 100% Parts and Labor warranty (new replacement)

Accumulated dose chart

on the back of the device with a chirp count

Dimensions

Length

1.75"

Width

1.25"

Height

0.75"

Weight

32gm (1.0 oz)

 
For pricing please contact us
 
 
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