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TSI Alnor Instruments

FLW, Inc. is a proud distributor of TSI Instruments product for over 20 years. We are TSI Alnor's LARGEST stocking distributor in the United States with stock of common balometers, velometers, anemometers, & more.

TSI manufactures high-quality Alnor® air velocity equipment. The Alnor brand of handheld instruments is widely used by HVAC contractors, facility personnel, building engineers, safety officers and industrial hygienists worldwide.

As a well known brand with years of experience to back it up, Alnor has earned a reputation for quality devices. TSI acquired the Alnor Instrument Company in 1995 and continues to uphold high industry standards of reliability and durability

Please contact FLW, Inc for application or commercial assistance for any TSI Alnor product.

Balometer Capture Hoods

ABT Balometers

alnor tsi abt701 standard balometer capture hood


ABT701, ABT703, ABT711, ABT713

EBT Balometers

alnor tsi ebt731 balometer capture hood



LoFlo Balometers

alnor tsi 6200 loflo balometer


6200, 6200D, 6200F, 6200E

Velometer / Air Velocity Meters

Thermal Anemometers

alnor tsi avm440 velometer thermal anemometer

Rotating Vane Anemometers

alnor tsi rva801 rotating vane anemometer


RVA801, RVA501

Velometer Anemometers

alnor tsi 8100-8 velometer jr


8100-8, 8100-16, 8100-25

Installed Instruments

Air Velocity Transducers

alnor tsi 8455-03 air velocity transducer


8455, 8465, 8475

AirGard Air Flow Monitors

alnor tsi airgard air flow monitor 315 bsc


315-BSC, 350-CEM

AirGard Lab Hood Monitors

alnor tsi airgard fume monitor 335-d


335-D, 200-AG, 405-D

Air & Water Pressure Instruments


alnor tsi axd620 micromanometer


AXD620, AXD610

Hydronic Manometers

alnor tsi hm675 hydronic manometer


HM675, HM685

Indoor Air Quality Instruments

Indoor Air Quality Meters

alnor tsi 7545 iaq air quality meter


7545, 7525, 7515