NDC Infrared Engineering's Beta Transmission Sensor Model 300

Technical Specifications for the Beta Transmission Sensor

MODEL	303	302	301
Isotope	Promethium-147	Krypton-85	Strontium-90
Activity	500mCi (18.5GBq)	200mCi (7.4GBq)	10mCi (0.37GBq)
Energy (E_max)	0.225Mev	0.687Mev	2.283Mev
Half-Life	2.62 Years	10.7 Years	29 Years
Measurement Range (SG = 1) (Extended Ranges available upon request)	0-0.008 in (0-200g/m²)	0.001-0.047 in (25-1200g/m²)	0.004-0.215 in (100-5500g/m²)
Repeatability (2s, 1s)*	±0.1% or 0.05g/m² (the greater)	±0.2% or 0.2g/m² (the greater)	±0.3% or 1.5g/m² (the greater)
Air Gap	0.4 in (10mm)	0.63 in (16mm)	1.3 in (33mm)

*The repeatability specifications reflect the weighted mean of all possible sources of dynamic error, including the maximum allowable sensor X, Y and Z-Axis misalignment, possline / flutter variation, temperature change, etc, Measurement tests to confirm the above are encouraged.

Measurement Footprint

Models 303 & 302: 0.3 x 2 in (8 x 50mm)
Model 301: 1.2 in (30mm) dia

Streak Resolution: 1/32 in (1mm) streak resolution at a scanning speed of 5 in/s (7.7m/min)
Passline Tolerance: ±0.125 in (±3mm)
Time Constant: Analog = 5ms (Typical digital accumulation time 15ms)
Operating Temperature: 32-140°F (0-60°C)
Shutter: Electric Solenoid Driven, Fail-Safe
Dust Covers: Easily removed for replacement, repair or cleaning.
Air Gap Temperature Compensation: Standard on Model 303 and 302, incorporating high speed temperature sensors in each of the critical air columns for fast temperature changes and gradients.
Construction: 0.200 in (5mm) Cast aluminum housing with Stainless Steel Allen Head fasteners; Exposed surfaces are polyester powder coated. Sealed Quick Connect Electrical Connector; IP64 (DIN 40050) Rating; Available for hazardous environments (Class I, Division I, Group D)
Scanner: O-Frame Scanner

Korins Co.,Ltd.
Rm301, #24-2, Youido-Dong, Youngdungpo-Ku, Seoul, Korea
Tel. : (02)780-4848 Fax.:(02)780-1244, 786-1244

sales@korins.com