The Practical Instrument 541 BNC Frequency Calibrator with BNC Connector is designed for calibration, testing, and diagnosing turbine meters, frequency counters, vibration systems, tachometers, vortex shedders, integrators, and any other frequency devices in the shop, plant or field. Save hours of time compared to other calibration methods. When calibrating a totalizer, the Model 541 BNC eliminates the need of a stopwatch. Set the number of pulses and minutes required and it automatically stops when the selected number of pulses has been sent to the totalizer. The PIE 541 BNC has a handy LED indicator showing gate time for easy trigger level adjustment. The LED also pulses with the frequency output for calibration of optical pickups.

Easy to Use

With the Model 541 BNC, you can check and calibrate all your frequency instruments and measure flow sensors.

Take it with You Into the Shop, Plant or Field

Carry the PIECAL 541 BNC without worry - it comes with a carrying case and fits into your toolbox. It is accurate to ±0.005% of range.

Calibrate in Hz, kHz , CPM and CPH:

• 0.001 to 20.000 kHz
• 0.1 to 2000.0 Hz
• 0.01 Hz to 200.00 Hz
• 0.1 to 2000.0 CPM (Counts-per-Minute)
• 1 to 20000 CPH (Counts-per-Hour)

Quickly Output the Frequency you Need

Simulate vibration pickups and variable speed drives with sine wave outputs and flow meters and magnetic pickups with square wave outputs. If you calibrate positive displacement flow meters, Watt-hour meters or slow rated integrators select frequencies as slow as 1 CPH (0.0002777 Hz). Easily set any value quickly to within 0.01 Hz with the two speed adjustable EZ-Dial plus store any three frequencies for instant recall with the EZ-Check switch. Verify optical pickups with the GATE TIME LED that is synchronized with the output pulses.

Match Your Instrument Signal Levels

Choose zero based or zero crossing square or sine waves output from 0.1 V to 12 V peak-to-peak. Measure from 0.1 V to 120 V peak with X1 or X10 attenuation. Turn the dial to adjust the output amplitude to the level required.

Read Signals from Flow Meters

Measure flow meter, vibration, parts counter and other process frequency signals from 0.1 V to 120 V. GATE TIME LED flashes with received pulses indicating when the proper input adjustment level is achieved.

Calibrate Totalizers without a Stopwatch

Automatically output from 1 to 99999 pulses in 1 to 100 minutes. It is easier and more accurate than waiting around with the stopwatch to stop generating pulses at the correct time. Count input pulses from 1 to 100 minutes to verify totalizer input signals.