VelociCalc 9565 by TSI - Advanced Multiparameter Ventilation Meter
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VelociCalc 9565 by TSI - Advanced Multiparameter Ventilation Meter
Smoke tubes are not automatically included. Select them under Required Modules if your survey needs airflow visualization, or supply your own.
The VelociCalc 9565 by TSI is a multiparameter indoor air quality meter capable of simultaneously measuring air velocity (0–9,999 ft/min), temperature (14–140°F), relative humidity (5–95% RH), CO₂ (0–5,000 ppm), CO (0–500 ppm), and static pressure (±15 in. H₂O) in a single instrument. With onboard storage for over 26,500 samples, it is ideal for HVAC system diagnostics, ventilation assessments, indoor air quality investigations, and comfort studies in commercial and industrial buildings.
Choose Your Option
Rent for flexible short-term use or purchase to own
Rental Rates
Daily
$55.00
Weekly
$150.00
Monthly
Contact for pricing
Reference rates only. You get the best rate calculation - actual price based on your selected rental dates.
What is the TSI VelociCalc 9565 used for?
It's a multiparameter ventilation meter for HVAC commissioning, test and balance, fume hood and biosafety cabinet testing, cleanroom verification, and IAQ investigations. It measures air velocity, temperature, humidity, static pressure, and optionally CO₂ and CO in a single instrument with interchangeable probes.
What does the VelociCalc 9565 measure and what are the ranges?
Air velocity 0–9,999 ft/min, temperature 14–140°F (±0.5°F), relative humidity 5–95% RH (±3% RH), and static/differential pressure –15 to +15 in. H₂O. When paired with Probe 982, it also measures CO₂ (0–5,000 ppm) and CO (0–500 ppm).
VelociCalc vs. capture hood — which should I use?
Use a capture hood for direct diffuser CFM readings quickly across many grilles. Use the VelociCalc for velocity traverses, pressure diagnostics, multiparameter troubleshooting, and hood or cabinet testing where a capture hood doesn't apply.
Can the VelociCalc 9565 be used for fume hood and biosafety cabinet testing?
Yes — it supports fume hood and biological safety cabinet face velocity measurements. Confirm your facility's measurement protocol (number of test points, sash position, acceptance criteria) so your measurements match the required method.
Does the VelociCalc 9565 support datalogging?
Yes — it stores 26,500+ samples across up to 100 test IDs, supporting full commissioning and troubleshooting documentation workflows.
What's a common measurement mistake with the VelociCalc 9565?
Taking one velocity reading in a turbulent zone and treating it as the representative value. Use a defined traverse or multi-point protocol, allow readings to stabilize at each position, and document probe location and duct geometry.
What's included in the VelociCalc 9565 rental kit?
The meter with selected probe, static pressure probe, neoprene tubing, probe stand, spare batteries, USB cable, AC adapter, TrakPro software and manuals on USB, calibration certificates, and carrying case.
What does it cost to rent the VelociCalc 9565?
$50/day and $135/week. Pricing beyond two weeks is by quote. For HVAC commissioning, IAQ investigations, or fume hood surveys covering multiple rooms or buildings, the weekly rate provides better value than day rates for any project exceeding three days.
Exposure Hazards This Equipment Detects
Carbon Monoxide (CO)
CAS:
630-08-0
Learn More
Updated on March 17, 2026
PEL TWA
50 ppm (55 mg/m³)
REL TWA
35 ppm (40 mg/m³)
TLV TWA
N/A
Carbon Dioxide (CO₂)
CAS:
124-38-9
Learn More
Updated on March 17, 2026
PEL TWA
5000 ppm (9000 mg/m³)
REL TWA
5000 ppm (9000 mg/m³)
TLV TWA
5000 ppm (9000 mg/m³)
Humidity (% RH)
CAS:
N/A
Learn More
Updated on March 09, 2026
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A
Temperature (°C / °F)
CAS:
N/A
Learn More
Updated on March 09, 2026
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A
Air Velocity (CFM / ft/min)
CAS:
N/A
Learn More
Updated on March 09, 2026
PEL TWA
no limits assigned
REL TWA
no limits assigned
TLV TWA
no limits assigned
Features & Capabilities
| Calibration Certificate Available: | ✓ Yes |
| Datalogging: | ✓ Yes |
| Monitoring Scope: | Area Monitoring |
Equipment Specifications
| Type/Class Rating: | Multiparameter Ventilation Meter |
| Measured Parameters: | Air Velocity, Temperature, Relative Humidity, Static/Differential Pressure, CO2 (with Probe 982), CO (with Probe 982) |
| Measurement Range: | Air Velocity: 0–9,999 ft/min (0–50 m/s); Temperature: 14–140°F (–10 to 60°C); Relative Humidity: 5–95% RH; Static/Differential Pressure: –15 to +15 in. H2O; CO2 (Probe 982): 0–5,000 ppm; CO (Probe 982): 0–500 ppm |
| Resolution: | Air Velocity: 1 ft/min (0.01 m/s); Pressure: 0.001 in. H2O (0.1 Pa) |
| Accuracy: | Air Velocity ±3% of reading or ±3 ft/min; Temperature ±0.5°F; RH ±3% RH; Pressure ±1%; CO2 ±3% or ±50 ppm; CO ±3% or ±3 ppm |
| Connectivity: | Bluetooth and USB data transfer via LogDat2 or TrakPro software |
| Compatible Probes / Accessories: | TSI 964 Air Velocity Probe (straight), TSI 966 Air Velocity Probe (articulating), TSI 982 IAQ Probe (CO2/CO) |
| Data Logging Interval: | 1 second to 1 hour |
| Data Logging Capacity: | 26,500+ samples across 100 test IDs |
| Battery Run Time: | 4 AA batteries or AC adapter |
Interchangeable Module Specifications
Key specifications are determined by which of the 4 modules below is fitted. Select one when configuring your rental. Expand any module to view its specifications.
982 Indoor Air Quality Probe by TSI
Plug-in probe for the VelociCalc 9565 meter — determines which parameters the meter measures and their ranges
Range
CO: 0 to 500 ppm. CO2: 0 to 5,000 ppm. Temperature: 14°F to 140°F (-10°C to 60°C). Humidity: 5% to 95% RH
Resolution
0.1 ppm CO, 1 ppm CO2, 0.1°F, 0.1% RH
Accuracy
CO: ±3 ppm or ±3% of reading, whichever is greater. CO2: ±50 ppm or ±3% of reading, whichever is greater. Temperature: ±1.0°F (±0.5°C). Humidity: ±3% RH
Measures
Carbon monoxide (CO), Carbon dioxide (CO2), Temperature, Relative humidity
966 Thermoanemometer Articulating Probe by TSI
Plug-in probe for the VelociCalc 9565 meter — determines which parameters the meter measures and their ranges
Range
Velocity: 0 to 9,999 ft/min (0 to 50 m/s). Temperature: 14°F to 140°F (-10°C to 60°C). Humidity: 5% to 95% RH
Resolution
1 ft/min, 0.1°F, 0.1% RH
Accuracy
Velocity: ±3% of reading or ±3 ft/min, whichever is greater. Temperature: ±0.5°F. Humidity: ±3% RH
Measures
Air velocity, Temperature, Relative humidity
964 Thermoanemometer Straight Probe by TSI
Plug-in probe for the VelociCalc 9565 meter — determines which parameters the meter measures and their ranges
Range
Velocity: 0 to 9,999 ft/min (0 to 50 m/s). Temperature: 14°F to 140°F (-10°C to 60°C). Humidity: 5% to 95% RH
Resolution
1 ft/min, 0.1°F, 0.1% RH
Accuracy
Velocity: ±3% of reading or ±3 ft/min, whichever is greater. Temperature: ±0.5°F. Humidity: ±3% RH
Measures
Air velocity, Temperature, Relative humidity
Telescoping Pitot Probe 8"-38" by TSI - Differential Pressure
Differential-pressure probe for the VelociCalc 9565-P meter. Can only be rented together with the VelociCalc 9565-P
Range
250 to 15,500 ft/min (1.27 to 78.7 m/s)
Resolution
1 ft/min (0.01 m/s)
Accuracy
±1.5% at 2,000 ft/min (10.16 m/s)
Measures
Air velocity, Volumetric flow
Kit Contents
Manufacturer Resources
Documents
User manuals, safety guides, and technical documentation from the manufacturer:
- VelociCalc 9565-P Specs PDF
- VelociCalc 9565-P Manual PDF
- VelociCalc 9565-P Quick Start Guide PDF
- VelociCalc 9565-P What's in the box PDF
- VelociCalc 9565-P Quick Tips for Pressure Testing PDF
- Using TSI VelociCalc with 964 Probe PDF
Videos
Product demonstrations and instructional videos from the manufacturer:
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