B2 Suppliers Of Testing Equipment, Description Of Test Terms - Heraeus HS 9 Service Manual

Service Instructions HERAsafe HS/12/18
B Field tests
B2 Suppliers of testing equipment, description of test terms
Testing equipment
Smoke tubes
Thermoanemometer
Anemometer
DIM (Direct Inflow Measurement) Shortridge Instruments Inc.
Digital Safety Inspector
GFI Circuit Tester
Photometer
Aerosol Generator
Description of field test terms:
Nominal value: Default value as specified by Kendro Laboratory Products.
Set point: Acceptable operating value for the inflow and downflow velocities.
Measuring value: Value measured at the cabinet location.
Average value: The sum of the measuring values divided by the number of tests. The average value is com-
pared with the nominal value.
Tolerance: Acceptable deviation from the nominal value.
Inflow velocity (m/s): Velocity of the air entering the work opening.
Exhaust velocity (m/s): Velocity of the airflow discharged through the exhaust filter opening.
Exhaust airflow volume rate (m³/s): Airflow volume discharged through the exhaust filter.
Downflow velocity (m/s): Velocity of the displacement flow circulating through the work chamber.
Valid: 05.2001 / 50060091 / A
Manufacturer
MSA
Pittsburgh
Pennsylvania, 15230
TSI
Shoreview, Minnesota 55126
TSI
Shoreview, Minnesota 55126
Scottsdale,Arizona 85260
Ohmic Instruments Co.
Easton, Maryland 21601
Leviton Manufactoring
Little Neck, New York, 11362
Air Techniques
Owing Mills, Maryland, 21117
Air Techniques
Owing Mills, Maryland, 21117
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Application
Airflow pattern test
Downflow velocity test
Inflow velocity test
Inflow velocity test
Electrical leakage and ground
resistance tests
Electrical leakage, ground resistance,
and polarity tests
Filter leak test
Generation of aerosol mist