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Zephyr Differential Pressure Meters & Modules

ZephyrIII Differential Pressure Micromanometer
Zephyr III ΔP (and ΔT) meter (with optional RH-AS2 %RH, °C/°F direct connect probe)

Zephyr III Digital Micromanometer
Highly Accurate, Low L.O.Ds, Yet Wide Measurement Range

Each Zephyr III instrument incorporates dual auto-ranging DP sensors, auto-zeroing (for data-logging stability), as well as dual ‘K’-type thermocouple sockets for measuring differential pressure, static pressure and differential temperature. With a pitot tube, the Zephyr provides direct air velocity readings. Volumetric flow is calculated by simply entering the size of the duct and the instrument performs the necessary calculation. Zephyr IIIs can also be fitted with a telescoping air velocity probe (models AS-201 or AS-202) to measure temperature and exceptionally accurate hotwire airspeed and/or an RH-AS2 probe for accurate relative humidity and °C/°F.

The Zephyr III incorporates a number of enhancements over the Zephyr II meter that it replaces and which had been utilized by many 1000s of clients over the last 20+ years.

The Zephyr III is a stand-alone instrument with the ability to capture instantaneous snap-shot logs, or to trend log over time. Audio and text notes, among others, may be added to the data files via a built-in microphone and the virtual keyboard. Recorded data may be downloaded to WolfSense PC reporting and analysis software, which is included.

    • -Standard inputs
      • Built-in, auto-zeroing, micromanometer (with broad range, yet excellent resolution)
      • Dual ‘K’ type thermocouple sockets
    • Optional probes
      • 2 function probe; hotwire airspeed, °C/°F
      • Pitot static tubes
      • Display and log calculated volume flow from hotwire probes or pitots
      • Direct connect or handle connected %RH and °C/°F probe
      • Surface, immersion, penetration, air K-type thermocouple temperature
    • Large color display
      • Display and measure up to 8 parameters simultaneously
      • Scroll through readings on display
      • Automatically updated when probes plug in
      • On screen instructions, even videos, for easy operation
    • Data port
      • Allows logged data to be downloaded to included WolfSense PC data download and reporting software or to a spreadsheet for analysis (USB data cable included)
      • Manual “Snap” or automatic “Trend” data-logging available
      • Advanced data-logging for unattended surveys
    • Intuitive menu system
      • Minimum training required
      • Easy-to-use
      • Screen prompts guide user through operation
    • Rechargeable Li-Ion batteries
      • 24+ hours operation on a full charge
      • AC power adapter/charger included
    • Durable housing
      • Impact resistant
      • Comfortable to use
      • Single-handed operation
      • Optional meter pouch or belt-clip(s) available for hands-free operation
    ZephyrIII Mircromanometer with Air Speed Probe
    Optional, telescoping AS-201 telescoping hotwire air velocity probe. Highly accurate. Also available with articulating tip (AS-202A)
    Zephyr III Digital Micromanometer Kit in Case

    Zephyr III Kit includes Data-logging Micromanometer, 2m (6ft) Dual Tubing, download Cable, WolfSense PC Data download Software and hard-shell Carry Case (with cutouts for optional extendable PIT-504 pitot kit, AS-201/201 and RH-AS2).

    Zephyr III Kits

    Part Number Zephyr III-ST-Kit Zephyr III-PLUS-Kit
    Zephyr III Instrument Zephyr III Instrument
    PCC-22 Carrying Case RH-AS2 %RH, Temperature direct-connect probe
    6ft of dual tubing AS-201 telescoping hotwire Air Velocity probe
    Mini-Tripod PIT-504-KIT expandable Pitot Tube kit
    Universal AC Adapter PCC-22 Carrying Case
    PC interface Cable, USB 6ft of dual tubing
    WolfSense PC Data Transfer/Reporting Software Mini-tripod
    1 yr WSAS software subscription Universal AC Adapter
    PC interface Cable, USB
    WolfSense PC Data Transfer/Reporting Software
    3 yr WSAS software subscription


    Zephyr-III Micromanometer

    Application Notes

    Download “Aircraft Maintenance Differential Pressure Kit”

    For Detailed Information: