Smart Sensor Specifications

25+ years with a primary focus on the Indoor Air Quality market, while also providing toxic exposure sensors for occupational hygienists and researchers, GrayWolf offers a wide range of sensors optimized for a variety of applications. And acting on the feedback from our extensive list of customers for IAQ, IH, R&D, HVAC, Green Buildings, and other focuses, we continue to expand our range of very smart sensors and compatible platforms.

Choose from TVOCs, CO2, HCHO (CH2O), CO, O3, NO2, NH3, H2S, NO, SO2, Cl2, HCN, HF, HCl, O2, H2, F2, EtO (C2H4O), AsH3, B2H6, ClO2, COCl2, PH3, SiH4, with more gases coming.
Display and log in your choice of units (ppb, ppm, µg/m3, mg/m3, % as available)
Sensors are truly plug & play, easily swapped by users. Exceptional calibration accuracy/repeatability across platforms.
Factory calibration is stored on the sensor’s GrayWolf designed smart board and calibration certificates are provided. NIST-traceable calibration available for most sensors.
Internal fans increase sensor response time, remove component generated heat.
Multiple ranges are available for some sensors (e.g. TVOCs, NH₃, CO₂) for optimum suitability for IAQ vs. toxic exposure applications.
Via Bluetooth LE, Wi-Fi, and/or cable, connect DSXM installed sensors to a choice of platforms; GrayWolf manufactured, purpose-built meters/monitors, Windows/Android/iOS devices, and/or remote to the GrayWolfLive® Cloud app.
Calibration kits are available to allow for user calibration on-site for most sensors, to ensure top level confidence when spot testing and long-term datalogging.

GrayWolf Gas Sensor Specs

DirectSense® XM/II Smart Sensor Specifications Summary

Sensor

Resolution (PPM)

Range (PPM)

Sensor L.O.D. (PPM)

T90 Response

NDIR

Carbon Dioxide (CO₂)

0 to 10,000

<20s

PID (TVOC, 10.6eV)

Low (ppb) range TVOC

0.001

0 to 40

0.001

<8s

Mid-low range TVOC

0.01

0 to >200

0.02

<8s

Mid-high (ppm) range TVOC

0.1

0 to 4,000

0.1

<3s

High (ppm) range TVOC

0.1

0 to >10,000

0.5

<3s

ELECTROCHEMICAL

Ammonia (NH₃)

0.1

0 to 100

<75s

Ammonia (NH₃) High Range TOX

0 to 1,000

<75s

Arsine (AsH₃)

0.01

0 to 1

<0.02

<60s

Carbon Monoxide (CO)

0.1

0 to 500

<0.1

<30s

Chlorine (Cl₂)

0.01

0 to 20

<0.02

<60s

Chlorine Dioxide (ClO₂)

0.01

0 to 1

<0.03

<90s

Diborane (B₂H₆)

0.01

0 to 1

<0.02

<30s

Ethylene Oxide (EtO)

0.1

0 to 100

<0.1

<150s

Fluorine (F₂)

0.01

0 to 1

<0.01

<60s

Formaldehyde (HCHO)

0.001

0 to 1

<0.01

<120s

Hydrogen (H2)

0 to 1,000

<35s

Hydrogen Chloride (HCl)

0.1

0 to 20

<0.2

<60s

Hydrogen Cyanide (HCN)

0.01

0 to 100

<0.05

<70s

Hydrogen Fluoride (HF)

0.1

0 to 10

<0.1

<90s

Hydrogen Sulfide (H₂S)

0.01

0 to 50

<0.03

<30s

Nitric Oxide (NO)

0.1

0 to 250

<0.2

<45s

Nitrogen Dioxide (NO₂)

0.01

0 to 20

<0.02

<80s

Ozone (O₃)

0.01

0 to 1

<0.02

<60s

Phosgene (COCl₂)

0.01

0 to 1

<0.02

<150s

Phosphine (PH₃)

0.1

0 to 10

<0.1

<25s

Silane (SiH₄)

0.1

0 to 50

<0.1

<60s

Sulfur Dioxide (SO₂)

0.1

0 to 50

<0.1

<20s

Oxygen (O₂)

0.1

0 to 25

<0.2

<15s

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