Guardian 500 Airflow Monitor


  • Applicable Products: Basic Laboratory Hoods


  • Weight: 6.0 lbs
  • Weight metric: 2.7 kg
  • Electrical: 115 volts, 60 Hz

Catalog #

Price: $905.00

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For installation in a factory-prepared cutout on the upper portion of the Basic Hood's right side fixture panel.

Guardian 500 Airflow Monitor senses and alerts the operator to low airflow conditions. Includes a face plate with circuit board, electrical power pack, vinyl tubing and airflow tube adapter. From the monitor's face plate, the user can easily select and calibrate a set point between 30 and 250 fpm using a velocity meter and a screwdriver. A green LED glows to indicate "safe" when airflow is greater than the low set point. A red LED flashes to indicate "low when airflow is below the low set point. An amber LED flashes when the sash is raised above the maximum safe working opening height. An audible alarm sounds (and can be muted) when under "low" and "sash high" condition. Includes night setback, external alarm and alarm mute functions.


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Protector Storage Cabinets, Base Stands & Fume Hood Accessories Catalog

Catalog provides ordering information on Protector Acid, Solvent, Standard and Vacuum Pump Storage Cabinets; SpillStopper and Flat Work Surfaces; and fume hood accessories including service fixture kits, electrical receptacle kits, airflow monitors, ceiling enclosures, distillation grids and Snuffer Fire Extinguishers. This is Labconco literature code 2-61.

View PDF (2.8 MB)

User's Manuals

Guardian 500 Airflow Monitor Installation Guide

Outlines installation and calibration procedures for Guardian 500 Airflow Monitor models 3944700 and 3944701.

View PDF (210.6 KB)

Guardian 500 Airflow Monitor Manual

For catalog numbers: 3944700, 3944701, 9743213 and 9743214

View PDF (131.9 KB)

Guardian 500 Digital Airflow Monitor Installation Guide

Outlines installation and calibration procedures for Guardian 1000 Digital Airflow Monitor models 9743211 and 9743212.

View PDF (99.3 KB)

Guardian Jr. Airflow Monitors

For catalog numbers: 4865000 and 4865001

View PDF (379.7 KB)

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