Calibrate your turbine meters, frequency counters, vibration systems, tachometers, vortex shedders, integrators and any other frequency devices in the shop, plant or field. Measure from 0.01 Hz to 250.00 KHz with resolution down to 0.01Hz. For your slower signals, source or measure from 0.1 to 2000.0 Counts per Minute (CPM) or from 10 to 20000 Counts per Hour(CPH). Quickly indicate process signals...no more waiting around with stopwatch and calculator.

“READ MODE" MEASURES WIDE RANGEOF FREQUENCIES  AND WAVEFORMS

Use in the field to check the signals from your  flowmeter pickups, velocity and motion detectors, Frequencies can bedirectly measured from 0.01 Hz to 250.00 KHz in four frequency ranges

Measure extremely slow frequencies (<1 Hz) with high resolution using CPM & CPH. Instead of displaying 1/2 Hz as 0.5 Hz (1 digit of resolution) as most with frequency countersyou can display it as 30.0 CPM (3 digits of resolution) or as 1800CPH (4 digits of resolution). You can now measure these slowsignals in seconds with the Model 942 instead of many minutes needed with a totalizer, stopwatch and calculator. Measure signals from 30 mV to 240 V peak-to-peak with a minimum pulse width of 2 microseconds.

Months of normal use on one set of  batteries. Six “AA” alkaline cells provide more than 40 hours of continuous output or  more than 80 hours of continuous frequency measurement. An optional AC adaptor can be used when the battery is low or for continuous bench and field use.

“SOURCE MODE”  FUNCTION GENERATOR

Select sine wave outputs to simulate vibration pickups, variable speed drives and square waves to simulate flowmeters and magnetic pickups. Any frequency from 0.01 Hz to 250.00 KHz can be sourced in four frequency ranges to calibrate tachometers, counters, data loggers, turbine meters and frequency transmitters. For low frequency applications such as positive displacement flowmeters, Watt-hour meters, slow rate integrators and assembly linecounting, the Model 942 sources signals as low as 1 CPH(0.0002777 Hz). Amplitude is adjustable from 50 millivolts to 12 Volts peak-to-peak.

Three “QUIK-CHEK” output values are remembered for each range. Turn the knob to check trip points, controller action and to control variable speed drives. The fast response 942 sets quickly without overshoot but allows slow changes at your own rate. Memory is retained for each range even when power is off.

CALIBRATE TOTALIZERS

Calibrate your totalizers & integrators faster and more accurately with the Model 942. Verify totalizer readings by outputting a number of pulses over 1 to 99 minutes. The Model 942 will automatically stop when the selected number of pulses have been sent to the totalizer. This eliminates waitingseveral minutes with a stopwatch to try to catch the total. You can also use the 942 as a timed totalizer to check the output rate from your flowmeters or integrators.