Radeco H-810BN2

The Ludlum Model 2221 is a general purpose radiation ratemeter and scaler that provides both an analog and digital display for optimally viewing the count rate and rate of change through all possible four decades of display

We can also calibrate them for an additional $25 each if you prefer

5–100 mV at a threshold setting of 100

2 kg (60 lb) not including moderators

LINEARITY: reading ±10% of true value

operating parameters

Front panel controls include a rotary switch for selecting between Off

00 in Dec of 2015) by the Ludlum Lab (about what Counts

SENSITIVITY: 1200 cpm per mR/hr (137Cs gamma) with window closed

Improved measurement quality as a result of alpha spectrum stabilization

Temperature Range -40°F to +167°F (-40°C to +75°C)

along with the location