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Frequency Calibrator with Totalizer Model 942
Handheld Calibrator with the Accuracy of an 8-Digit Counter!

  • Laboratory Accurate— 
    0.001% of setting (10 PPM).
  • Six Real World Ranges—
    1 to 20000 Counts-Per-Hour (CPH), 0.1 to 2000.0 Counts-Per-Minute (CPM), 0.01 to 999.99 Hz, 0.001 to 99.999 kHz and 0.01 to 250.00 kHz.
  • Calibrate Totalizers— 
    Output a selectable number of pulses over 1 to 99 minutes to verify totalizer readings. The calibrator automatically stops outputting when the selected number of pulses has been sent to the totalizer.
  • Count Pulses— 
    Use as a timed totalizer to check flowmeter and integrator outputs. Built-in totalizer to 99999 counts with optional timed operation to 99 minutes up to maximum rate of 100 Hz.
  • Save Time— 
    Calibrate flowmeters, frequency transmitters and integrators. Use CPH and CPM ranges to directly display extremely slow signals, eliminating waiting with stop watch and calculator.
  • Match Your Receiver's Input—
    Select from sine, zero crossing square or zero based square wave output. Adjustable amplitude from 50 mV to 12 V p-p.
  • Reads All Waveforms—
    From 40 mV to 240 V peak. Instantly recall the minimum and maximum frequency measured.
  • Quik-Chek Switch— Instantly recall 18 output frequencies (three for each range). Fast, easy adjustment with a multi-speed digital potentiometer.
  • Built-In Leads—
    Large alligator clips for easy connections. Optional BNC connector available.
  • Long Battery Life—
    Six AA alkaline batteries last over 40 hours.



Model 40aModel 40A Frequency Source
Economical Pocket-Sized Pulse Generator!

  • Generate Square Waves—
    0.5 Hz to 60 kHz in 40 steps. Amplitude from mV to 15 V p-p.
  • Zero Based and Zero Crossing Output— 
    Matches inputs of frequency input devices.
  • Extremely Accurate—
     8 PPM (0.0008% of setting).
  • Long Battery Life—
    Two 9 V alkaline batt. last 200 hours!
  • Frequencies— 
    5, 6, 10, 12, 15, 20, 30 & 60 times multiplier.
  • Multiplier—
    0.1, 1, 10, 100 & 1000 times frequency scale.




Quick Jump

Frequency Calibrator
with Totalizer
Model 942

Model 40A
Frequency Source