Air Velocity Meters, Ventilation Meters, IAQ Meters,
Micromanometers, Thermohygrometers, AIr Balance Hoods

TSI VelociCalc^®  9555 Multi-Parameter Ventilation Meters 

Model 9555/9555A

The Series 9555 are portable, hand held, Multi-Function Ventilation Test Instruments. These instruments are available with or without a differential pressure sensor and are designed to work with a wide range of plug-in probes. The probes allow users to make various measurements by simply plugging in a different probe that has the features and functions best suited for a particular application. They are designed to measure air velocity, temperature, humidity, CO and CO2. Calculations include air flow, heat flow, turbulence, wet bulb and dew point temperature. The probes can be ordered at any time and include a data sheet with certificate of traceability. When its time for servicing, only the probe needs to be returned since all the calibration data is stored within the probe.

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 (101.6-cm) 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 hand-held 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 8725 adds data logging, and performs wet bulb temperature, absolute humidity, humidity ratio and % outside air calculations.

AccuBalance® Air Balance Hoods

Models 8371, 8375

AccuBalance air balance hoods measure the air volume flowing through registers, diffusers and grilles. Weighing just seven and one-half pounds, the AccuBalance 8371 hood is easy to carry, lift and use. Simply hold the balance hood up to a diffuser or grill and read direct airflow of a supply or exhaust on the large digital display.

The TSI 8375 features a detachable Model 8710 DP-Calc Micromanometer for use in other applications with pitot probes, air flow, temperature, velocity matrix or 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. Bios-Safety hood kits are available.