TSI VelociCalc 9515 Digital Anemometer
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 9515 |
| Price | Upon Request |
| Air Velocity Range | 0–4000 ft/min (0–20 m/s) |
| Accuracy | ±5% of reading or ±5 ft/min (±0.025 m/s), whichever is greater |
| Resolution | 1 ft/min (0.01 m/s) |
| Temperature Range | –18 to 93 °C (0 to 200 °F) |
| Temperature Accuracy | ±0.3 °C (±0.5 °F) |
| Temperature Resolution | 0.1 °C (0.1 °F) |
| Operating Temperature (Instrument) | 5–45 °C (40–113 °F) |
| Operating Temperature (Sensor, 9515) | –18–93 °C (0–200 °F) |
| Storage Temperature | –20–60 °C (–4–140 °F) |
| Dimensions (9515) | 8.4 × 17.8 × 4.4 cm (3.3 × 7.0 × 1.8 in) |
| Probe Length (9515) | 101.6 cm (40 in) |
| Probe Tip Diameter (9515) | 7.0 mm (0.28 in) |
| Probe Base Diameter (9515) | 13.0 mm (0.51 in) |
| Weight (with batteries) | 0.27 kg (0.6 lb) |
| Power Supply | 4 × AA batteries |
Overview
The TSI VelociCalc 9515 Digital Anemometer is a compact, handheld thermal anemometer engineered for routine airflow verification and commissioning tasks in HVAC, laboratory safety, and indoor air quality (IAQ) applications. It employs constant-temperature anemometry (CTA) — a well-established principle where a heated sensor element cools proportionally to local air velocity — to deliver stable, repeatable measurements across its full range of 0–20 m/s (0–4000 ft/min). Designed for field technicians and facility engineers rather than metrology laboratories, the 9515 prioritizes operational robustness, ergonomic probe accessibility, and rapid visual feedback over ultra-high metrological grade accuracy. Its integrated 101.6 cm (40 in) telescoping probe enables non-intrusive measurement in ductwork access ports, biological safety cabinet face velocities, fume hood sashes, and ventilation grilles where conventional rigid probes cannot reach — fulfilling a practical niche in preventive maintenance and regulatory pre-checks.
Key Features
- Integrated 101.6 cm (40 in) telescoping probe with durable stainless-steel construction and low-profile 7.0 mm tip diameter for minimal flow disturbance
- Backlit LCD display with large numeric readout and simultaneous dual-parameter view (air velocity + temperature)
- Auto-ranging measurement circuitry eliminating manual scale selection; real-time hold and min/max tracking functions
- Factory-calibrated sensor with NIST-traceable calibration certificate included — compliant with ISO/IEC 17025–accredited calibration practices
- Rugged ABS housing rated for daily field use; IP54-rated against dust and water splashes during portable operation
- Battery life exceeding 20 hours under typical usage conditions; powered by four standard AA alkaline cells
Sample Compatibility & Compliance
The VelociCalc 9515 is validated for use in non-hazardous environments per IEC 61000-6-3 (EMC emission standards) and meets CE marking requirements for electromagnetic compatibility and safety (EN 61010-1). While not intrinsically safe, it complies with UL 61010-1 for general-purpose electrical safety in laboratory and industrial settings. The instrument supports routine verification of airflow parameters required by ASHRAE Standard 110 (fume hood performance), NSF/ANSI 49 (biological safety cabinet certification), and ISO 14644-3 (cleanroom airflow uniformity testing). Its temperature and velocity accuracy specifications align with ANSI/ASHRAE Guideline 12–2020 for HVAC system commissioning documentation.
Software & Data Management
The 9515 operates as a standalone field instrument without onboard data logging or PC connectivity. However, measurement records can be manually documented into electronic logbooks compliant with 21 CFR Part 11 when paired with validated procedural controls (e.g., controlled worksheets, timestamped annotations, and reviewer sign-offs). For facilities requiring automated traceability, TSI recommends pairing the 9515 with its companion VelociCalc Mobile App (via Bluetooth-enabled models) or integrating readings into CMMS platforms using standardized CSV export workflows. All calibration certificates include unique serial-numbered traceability to NIST standards, supporting GLP and GMP audit readiness.
Applications
- Face velocity verification of Class II biological safety cabinets per NSF/ANSI 49 and EU Directive 2004/108/EC
- Supply/return grille and diffuser balancing in commercial HVAC systems per ASHRAE Handbook—HVAC Applications
- Pre-commissioning checks of laminar flow hoods, cleanrooms, and isolation rooms
- Indoor air quality (IAQ) surveys including thermal comfort assessment (operative temperature + air movement)
- Exhaust system validation for spray booths, paint mixing areas, and chemical storage zones
- Energy audit support — identifying airflow imbalances contributing to excessive fan energy consumption
FAQ
Is the 9515 suitable for ISO 17025 accredited calibration labs?
No — the 9515 is designed for field verification, not primary calibration. Accredited labs require reference-grade instruments with documented uncertainty budgets and full traceability to national metrology institutes.
Can the probe be replaced or recalibrated independently?
Yes — TSI offers certified probe recalibration services (P/N CAL-9515-PROBE) and replacement probes with factory calibration certificates.
Does the device meet OSHA or NIOSH airflow monitoring requirements?
It satisfies general industrial hygiene screening criteria for ventilation assessment but is not certified for personal exposure sampling per NIOSH Method 0600.
What is the recommended recalibration interval?
TSI recommends annual recalibration for routine QA/QC use; more frequent intervals may be required in high-use or corrosive environments per internal SOPs.
Is firmware upgradable?
No — the 9515 uses fixed-function firmware; no user-accessible updates are available.
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