Specifications

Weight

Sample changer (including shielding): 180 lb (81.65 kg)
Computer: 35 lb (15.88 kg)
Printer: 10 lb (4.54 kg)

Dimensions

All units are bench-top mounted.

Sample changer (width, depth, height): 21 in. (53.34 cm), 26 in. (66.04 cm), 24 in. (60.96 cm)

Computer with keyboard and monitor (width, depth, height): 13 in. (33.02 cm), 21 in. (53.34), 16 in. (40.64 cm)

Printer (width, depth, height): 16 in. (40.64 cm), 14 in. (35.56 cm), 6 1/2 in. (16.51 cm)

Sample Changer

Sample handling: 25-sample rotary changer; change time is ten seconds per sample

Detector and shield: 2 in. x 2 in. (5.08 cm x 5.08 cm) sodium iodide [NaI(Tl)] with 0.8 in. x 1.4 in. (2.03 cm x 3.56 cm) deep well; shielded 4-pi by ~2 in. (5.08 cm) low-background lead; energy range: 20 to ~2000 keV.

Maximum background (laboratory): < 100 cpm

Requirements

Clearances

Sample changer: 3 in. (7.62 cm) at sides, 5 in. (12.7 cm) at rear, 3 in. (7.62 cm) above; there must be no obstruction underneath

Computer: 5 in. (12.7 cm) at sides, 4 in. (10.16 cm) at rear, 5 in. (12.7 cm) above, 6 in. (15.24 cm) at front (in addition to keyboard); there must be no obstruction of airflow at the rear

Printer: 4 in. (10.16 cm) at sides, 4 in. (10.16 cm) at rear, 12 in. (30.48 cm) above for paper access; there must be free air flow at sides and rear and free paper flow from below or rear

Mounting

The sample changer requires a sturdy, laboratory-type bench capable of supporting 180 pounds (81.65 kg) on a four-point mounting; it must be level. The computer and printer require only office-type mounting facilities.

Shock/Vibration

Observe normal laboratory conditions.

Power

All units require 115 V ± 10%, 60 Hz, single phase

Sample changer: 40 W

Computer: 575 W

Printer: 15 W

Electromagnetic Interference (EMI)

All units are well-shielded against emission of EMI.

Heat Load

Less than 300 W are contributed to the atmosphere

Laboratory Environment for Gamma Counting

Background Radiation Limit

External sources of radiation can significantly affect the proper operation of the instrument and the test results. Such sources should be minimized to the greatest possible extent.

Temperature Limits

The BVA-100 is a precise laboratory device; it is temperature sensitive. Temperatures must be maintained within ± 5 °F (2.78 °C) of normal; the rate of change must be < 1 °F (0.56 °C) per hour

Operating temperature range: 65-85 °F (18-30 °C)

Storage temperature range: 45-100 °F (8-38 °C); rapid temperature changes must be avoided