EVM-7 by TSI Quest - Indoor Air Quality Monitor
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EVM-7 by TSI Quest - Indoor Air Quality Monitor
The TSI Quest EVM-7 is a versatile environmental monitor that combines aerosol mass concentration monitoring, indoor air quality assessment, and area gas detection into a single device. It simultaneously measures and logs PM mass concentration, VOCs (PID), CO, CO₂, temperature, and relative humidity, with a dial-in impactor for particle size selection. The large display, simple button interface, and straightforward menu structure make it well-suited for industrial hygiene surveys, OSHA/NIOSH compliance assessments, healthcare facilities, data centers, and post-remediation clearance testing. Compatible with TSI TrakPro data management software for reporting and analysis.
Choose Your Option
Rent for flexible short-term use or purchase to own
What is the TSI EVM-7 used for?
It's a multiparameter indoor air quality and area monitoring instrument that simultaneously measures and logs particulate mass (PM2.5, PM4, PM10, or TSP via rotary impactor), VOCs (PID), CO, CO₂, temperature, and RH in a single device. It's designed for IAQ investigations where you need multiple parameters correlated to identify whether an issue is ventilation, particles, or a contaminant source.
EVM-7 vs. a handheld PID — when should I use each?
Use a handheld PID for quick VOC screening and spatial mapping. Use the EVM-7 when you need VOC, PM, and gas parameters logged together over time — so you can see whether spikes in one parameter correlate with others.
EVM-7 vs. TSI Q-Trak XP — what's the difference?
The EVM-7 is built around aerosol mass monitoring with a built-in sampling pump and selectable size-fraction impactor — it's the right choice when particulate characterization is central. The Q-Trak XP is a modular multiparameter monitor with real-time graphing optimized for ventilation and comfort parameter surveys. Choose based on whether PM fraction selection or sensor modularity matters more for your project.
What is the dial-in impactor system, and why does it matter?
The rotary impactor lets you select the PM fraction you're measuring (PM2.5, PM4, PM10, or TSP) without swapping hardware. This matters when your investigation requires a specific particle size fraction to compare against an exposure standard or benchmark.
How should I place the EVM-7 for representative IAQ data?
Place it at breathing zone height, away from direct supply air diffusers (unless characterizing those), and document placement, HVAC state, and any nearby activity. Context is what makes trend data defensible — a data logger without placement notes is hard to interpret.
What's included in the rental kit?
The EVM-7 with charger, calibration adapter, zero filter, filter cassettes, tool, USB cable, software and manuals on flash drive, calibration certificate, and carrying case.
What does it cost to rent the TSI EVM-7?
$215/day and $610/week. Pricing beyond two weeks is by quote. For IAQ investigations covering multiple areas or buildings, the weekly rate is typically more economical — a thorough investigation usually takes more than one day per building.
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
Volatile Organic Compounds (VOCs)
CAS:
N/A
Learn More
Updated on March 09, 2026
PEL TWA
N/A
REL TWA
N/A
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)
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
Humidity (% RH)
CAS:
N/A
Learn More
Updated on March 09, 2026
PEL TWA
N/A
REL TWA
N/A
TLV TWA
N/A
Features & Capabilities
| Calibration Certificate Available: | ✓ Yes |
| Datalogging: | ✓ Yes |
| Monitoring Scope: | Area Monitoring |
Equipment Specifications
| Component Role: | Base instrument — combines aerosol mass monitoring, indoor air quality assessment and area gas detection in one device. The optional ppb sensor module below is supplied on request |
| Detection Method / Sensor Type: | Light-scattering photometer mass concentration engine with built-in sampling pump for particulates; photoionization detector (PID) for volatile organic compounds; electrochemical sensors for toxic gases |
| Measured Parameters: | Particulate mass concentration, Volatile organic compounds (VOCs), Carbon monoxide (CO), Carbon dioxide (CO2), Toxic gases, Temperature, Relative humidity |
| Size Fractions Measured: | PM2.5, PM4 (Respirable), PM10, TSP |
| Channels/Size Bins: | Patent-pending dial-in rotary impactor selects one particulate fraction at a time — PM2.5, PM4, PM10 or TSP |
| Sampling Modes: | Simultaneous real-time measurement and logging of all fitted channels |
| Connectivity: | TSI Quest Detection Management Software (DMS) included with rental; also compatible with TSI TrakPro data management software |
| Intended Use: | Industrial hygiene surveys, OSHA and NIOSH compliance assessment, healthcare facilities, data centres, and post-remediation clearance testing |
Interchangeable Module Specifications
Key specifications are determined by the module below, included with this configuration. Expand it to view its specifications.
Volatile Organic Compounds (VOCs), parts-per-billion range
Photoionization detector (PID)
Range
0 to 50,000 ppb
Resolution
1 ppb
Kit Contents
Manufacturer Resources
Documents
User manuals, safety guides, and technical documentation from the manufacturer:
- EVM-7 What's in the box PDF
- EVM-7 Specification Datasheet PDF
- EVM-7 Quick Start Guide PDF
- EVM-7 Manual PDF
Videos
Product demonstrations and instructional videos from the manufacturer:
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Rental Dates Notice