FM-801 Formaldehyde Monitor0 pages
Advanced Environmental Instrumentation
Formaldehyde Multimode Monitor
FM-801
Surveyed
Innovative New Method of
Formaldehyde Measurement
• Small colorimetric sensor cartridge,
43x17x4mm (1.7x0.7x0.16in), easy-to-use,
reusable*, highly accurate for passive
diffusion sampling.
• Portable base unit utilizes photoelectric
photometry to read the absorbance
change that HCHO induces in the sensor,
then re-zeros between readings.
Email:
Measurement Principle
stand-alone passive sampler.
as an on-site meter for short-term
(30minute) sampled measurement and/or for
continuous monitoring/trend logging*.
GRAYWOLF
SENSING SOLUTIONS
Ph. 1-203-402-0477
Fax: 1-203-402-0478
Detachable Sensor Cartridge
• Sensor cartridge itself can work as a
• Base unit w/sensor inserted can operate
®
Reported
Documented
• Base unit interfaces to GrayWolf’s
AdvancedSense®, DirectSense® and
WolfPack® for simultaneous display and
logging of additional parameters (and for
powerful annotation features).
Colorimetric reaction to exposure
Sensor element employs the chemical reaction
between formaldehyde and β-diketone impregnated
in a porous glass. The concentration of rutidine
derivatives yellows the sensor in proportion to the
formaldehyde concentration and the duration of
exposure. The difference of absorbance between
samples is measured by radiating a constant wavelength light (absorptiometric method) and then an
algorithm converts to ppb or µg/m3 HCHO.
Salesteam@GrayWolfSensing.com
Website:
www.GrayWolfSensing.com
* ensor reuse depends on HCHO exposure (approximately 4 x 30 minute tests at 1ppm,
S
approximately 150 tests at 80ppb, approximately1000 tests <10ppb HCHO)