PIE Model 541 Frequency Calibrator

The PIE Model 541 Frequency Calibrator with Totalizer is a dedicated calibration and troubleshooting tool engineered for frequency-based instrumentation. Manufactured by PIE Calibration, the Model 541 is designed to simplify calibration of flow meters, turbine meters, tachometers, vibration systems, vortex meters, frequency counters, and totalizers—both in the shop and in the field.

Unlike traditional methods that rely on stopwatches and manual calculations, the PIE 541 integrates a built-in totalizer, dramatically reducing calibration time and eliminating common sources of error.

Features and Performance

• Advanced Frequency Calibration
  Generate multiple waveform types:

  • Sine waves

  • Zero-based square waves

  • Zero-crossing square waves

• Wide Frequency & Pulse Range
  Compatible with common industrial signal ranges:

  • 0.001 kHz to 20.000 kHz

  • 0.1 Hz to 2,000 Hz

  • 0.01 Hz to 200 Hz

  • 0.1 CPM to 2,000 CPM

  • 1 CPH to 20,000 CPH

• Built-In Frequency Counter
  Measure input waveforms from 0.1 V to 120 V peak-to-peak, enabling direct verification of real-world signals.

• Integrated Totalizer Function
  Totalize 1 to 99,999 counts over a selectable period from 0.1 to 100 minutes.
  The calibrator automatically stops after the preset pulse count—no stopwatch required.

• EZ-Dial™ Precision Control
  Smooth rotary adjustment allows fast, accurate frequency setting.

• EZ-Check™ Dual-Action Switch
  Instantly test calibration limits and verify instrument response.

• LED Gate Time Indicator
  Visual confirmation of gate timing simplifies trigger level adjustments and improves accuracy.

• Field-Ready Design
  Compact, lightweight, and battery powered for portable calibration work.

Why You Should Buy It

• Purpose-built for frequency and totalizer calibration

• Eliminates manual timing and calculation errors

• Saves significant troubleshooting and calibration time

• Replaces discontinued Altek 941 and 942 models

• Ideal for flow, turbine, vibration, and tachometer systems

• Includes NIST calibration certificate

• Backed by a 3-year factory warranty

FAQ – PIE Model 541

Q: What instruments can the PIE 541 calibrate?
A: It is ideal for flow meters, turbine meters, frequency counters, tachometers, vibration systems, vortex meters, and totalizers.

Q: Does the PIE 541 measure frequency as well as generate it?
A: Yes. It includes a built-in frequency counter for measuring incoming signals.

Q: Is a stopwatch required when calibrating totalizers?
A: No. The PIE 541 automatically stops after sending the selected number of pulses.

Q: Is data logging supported?
A: No. This model focuses on real-time calibration and totalizing rather than data logging.