Model 2200 Scaler/Ratemeter
  • Ratemeter with total range of 0 Ð 500,000 cpm
  • Single-channel analyzer with 6-digit LED display
  • Power either by wall current or four D-cell batteries
  • RS-232 serial port and software for computer/printer interface
  • Optional: - Well Counter
The Model 2200 Scaler/Ratemeter is designed for sample counting and single-channel analyzing when used with an appropriate detector. Two independently adjustable discriminators allow the user to set an "energy window" to count pulses within a user-specified energy range corresponding to the radionuclide of interest. This portable unit can be powered by wall current or by four D-cell batteries. When equipped with the optional Well Counter (187-243), the unit serves as a reliable and efficient tool for wipe test counting, Schilling tests, and other procedures involving radiopharmaceuticals or ionizing radiation. The Well Counter's 4pi geometry provides high sensitivity to isotopes such as I-131. The Model 2200 has an RS-232 serial port for connection to a computer or printer for logging and output of count data. Windows® -based software is also included so that a PC can be used to control count time, date-stamp records, print hard copy, or save data to disk files.

Specifications

Scaler/Ratemeter
  • Indicated Use: Single-channel analyzing, gross sample counting
  • Compatible Detectors: Scintillation, GM, proportional
  • Scaler: 6-digit LED display with dimmer control; range: 0 - 999,999 counts (controlled by "COUNT" button)
  • Scaler Linearity: Reading within ±2% of true value
  • Timer: Thumb wheel adjustment from - 999 minutes with selectable divisions of x0.1 and x1
  • Ratemeter: 0 - 500,000 cpm total range
  • Meter: 2.5" arc (6.4 cm), 1 mA movement, analog
  • Meter Dial: 0 - 500 cpm, 0 - 2.5 kV, Battery Test
  • Multipliers: x1, x10, x100, x1000
  • Linearity: Reading within ±10% of true value with detector connected
  • Response: Toggle switch for FAST (4 sec.) or SLOW (22 sec.) from 10% to 90% of final reading
  • Zero: Pushbutton to zero meter
  • High Voltage: Adjustable from 200 - 2500 volts (will support 60 megohm scintillation loads)
  • Threshold: Voltage sensitive, adjustable from 1.00 - 10.00
  • Window: Adjustable from 0 - 10.0 above the threshold setting (can be enabled or disabled)
  • Discriminator: Adjustable from 2 - 100 mV at threshold setting of 1.00
  • RS-232: Nine-pin connector for printer or software interface
  • Detector Cable Connector: Series "C"
  • Power: 115 VAC; 220 VAC or battery power
  • Battery Life: Typically 120 hours with alkaline batteries (battery check on meter)
  • Housing: Aluminum, beige polyurethane enamel paint
  • Dimensions: 8.5" h x 5" w x 9.3" depth (21.6 x 12.7 x 23.5 cm)
  • Weight: 6.9 lb (3.1 kg) without batteries
187-243 Well Counter:
  • Dimensions: 8" w x 8" depth x 11.75" h (20 x 20 x 30 cm)
  • Well: .625" dia x 1.4" h (2 x 4 cm)
  • Lead Shielding: 1" thick (2.5 cm)
  • Construction: Monoline
  • Weight: 30 lb (14 kg)

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