The Ludlum Model 500 Pulse generator allows calibrating most scaler/ratemeter instruments.  The adjustable output pulse rate is displayed on a three-digit LED readout. Potentiometers (both coarse and fine controls) and a multiplier switch provide rates from 1 to 9.9 x 10^6 counts per minute (cpm). Pulse amplitude is controlled by a multiplier switch and a LO/HI potentiometer, while pulse polarity is chosen by a selector switch. Amplitude may be varied between 0 and a negative or positive 5 volts; displayed on an analog meter. The high voltage of the instrument under test is displayed on an analog meter with markings of 0-2.5 kilovolts.

Pulse Rate from 1 – 9,900,000 cpm

• 0 mV – 5 V Total Pulse Amplitude Range
• Positive and Negative Pulse Polarity
• High Voltage Range from 0 – 2500 Volts

INDICATED USE: Pulse calibration of instrumentation
PULSE RATE: Reads from 10 – 990 counts with coarse and fine tuning adjustment for accurate setting
MULTIPLIERS: X0.1, X1, X10, X100, X1k, X10k
LINEARITY: Reading within plus or minus 2% of true value
TOTAL RANGE: 1 – 9,900,000 cpm
HIGH VOLTAGE: Reads from 200 – 2500 volts (2500 plus or minus 2% megohm impedance)
METER: 2.5″(6.4cm) arc, 1 mA analog type
METER DIAL: 0 – 2.5 kV
LINEARITY: Reading within plus or minus 5% of true value
PULSE AMPLITUDE: Provides a total range from 0 mV – 5 V (positive and negative polarity)
METER: 2.5″(6.4cm) arc, 1 mA analog type
METER DIAL: 0 – 5
RANGES: 0 – 5 mV, 0 – 50 mV, 0 – 500 mV, 0 – 5 V
LINEARITY: Reading within plus or minus 10% of true value
POWER: 95 – 135 VAC (178 – 240 VAC available), 50 – 60 Hz single phase (less than 100 mA)
CONSTRUCTION: Aluminum housing with beige polyurethane enamel paint
SIZE: 8.5″(21.6cm)H X 11.5″(29.2cm)W X 9.5″(24.1cm)D
WEIGHT: 9 lbs (4.1kg)

This unit (like everything else in our store) is sold with CHP’s unconditional 30 day warrantee.