Model 2929 Scaler Technical Manual Section 2
Ludlum Measurements, Inc. Page 2-1 January 2016
Specifications
0
Power: 95 to 250 Vac wall transformer with 24 Vdc output, 50-60 Hz
single phase (typically less than 100 mA)
Input Senstivity: Beta-gamma lower threshold is adjustable from 4 mV,
beta-gamma upper threshold is adjustable from 25 mV to 100 mV, and
alpha threshold is adjustable from 175 mV.
High Voltage (HV): fully adjustable from 200 to 2500 V ±100 V with
the capability of supporting 60-megohm scintillation loads to 1500 V
HV Meter: 6.4 cm (2.5 in.) panel analog meter readout
HV Meter Accuracy: ±10% of reference value
Audio: click-per-event type with volume control for each of the two
channels
Count Time: 0-99 minutes with multiplier of 0.1, 1.0 and 10; external
position for use with an external clock source
Timer Accuracy: The time base for the scaler is crystal-controlled and
has a timer accuracy of ±0.2% of the thumbswitch setting.
Scaler Readout: six-digit, light-emitting diode readout for each of the
two channels
Scaler Accuracy: ±2% of reference value
Size: 24.4 x 37.1 x 25.1 cm (9.6 x 14.6 x 9.9 in.) (H x W x L)
Weight: 5.5 kg (12.1 lb), including detector
Finish: beige powder coat with anodized front panel and silk-screened
nomenclature
Temperature Range: -20 to 50 °C (-4 to 122°F); may be certified for
operation for -40 to 65 °C (-40 to 150 °F)
Sectio
2
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