TSI VelociCalc^®  9555 Multi-Parameter Ventilation Meters 
Model 9555/9555A

TSI VelociCalc^® Air Velocity Meters
Models 9515, 9525, 9535, 9545

Professionals have found VelociCalc air velocity meters to be ideal tools for measuring face velocity measurements in fume hoods and spray booths, or for IAQ and ventilation system checks.

The Models 9515 and 9525 are economical choices for Air Velocity Meters without compromising accuracy or precision. The Model 9515 features a 40-inch (101.6cm) telescoping integrated probe for difficult to reach measurements. The Model 9525 has a 3-inch retractable probe, plus is UL listed as intrinsically safe for use in hazardous locations for Division 1 and 2 in Class I, Groups C and D; Class II, Groups E F and G; and Class III.

The Models 9535 and 9545 thermal anemometers are like having multiple instruments for the price of just one. These meters simultaneously measure and datalog several ventilation parameters using a single probe with multiple sensors. Both models measure velocity, temperature and calculate flow.

The Model 9545 also measures relative humidity, and calculates dew point, and wet bulb temperature. Models 9535 and 9545 have telescopic straight probes; Models 9535-A and 9545-A have telescopic articulated probes.

TSI IAQ-Calc^® IAQ Meters 
Models 7515, 7525, 7535, 7545

TSI’s IAQ-CALC Meters are outstanding instruments for investigating and monitoring indoor air quality (IAQ). The Model 7515 is a cost-effective meter for carbon dioxide (CO2) measurements.

The Model 7535 adds data logging of CO2. The Models 7525 and 7545 simultaneously measure and data log multiple parameters. The Model 7525 measures CO2, temperature, relative humidity, and calculates dew point, wet bulb temperature, and % outside air.

The Model 7545 adds carbon monoxide (CO).

TSI DP-Calc^® Digital Micromanometers
Models 5815, 5825

The DP-CALC™ 5815 and 5825 micromanometers allow you to easily make HVAC pressure measurements. These robust instruments can be used with Pitot probes to measure duct velocity. The DP-CALC™ 5815 is a simple to operate, hand held digital Micromanometer for fast, accurate differential and static pressure measurements.

The high performance DP-CALC™ 5825 can calculate flow and has data logging capabilities.

TSI TH-Calc^® Thermohygrometers
Models 7415, 7425

TSI’s TH-Calc™ Meters are handheld diagnostic instruments for measuring temperature and humidity. TH-Calc Meters are ideal for conducting thermal comfort studies and Indoor Air Quality (IAQ) evaluations. The Model 8720 measures temperature and humidity, and also calculates dew point.

The Model 8722 adds data logging, and performs wet bulb temperature, absolute humidity, humidity ratio and % outside air calculations.

AccuBalance® & AccuBalance® Plus Air Balance Hoods

Models 8371, 8372, 8373, 8375

AccuBalance and AccuBalance Plus air balance hoods measure the air volume flowing through registers, diffusers and grilles. Weighing just seven and one-half pounds, the AccuBalance hood is easy to carry, lift and use. Simply hold the AccuBalance hood up to a diffuser or grill and read direct airflow of a supply or exhaust on the large digital display. Models 8372 and 8373 can datalog the measured values. The Model 8373 also accurately measures temperature. The TSI 8375 features a detachable digital manometer for use with Pitot probe, air flow, temperature, velocity matrix and relative humidity probes. The AccuBalance 8371 basic unit does not have many of the advanced features such as datalogging, air flow direction or temperature sensor.

Variable time constant modes available for steady display when measuring fluctuating flows. The "K" factor function enable flexibility for measuring a variety of diffusers. Datalogging units download to a PC using the TSI LogDat™software program.