Transmissometer Types 

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Transmissometers are instruments that measure the optical Transmittance through a length of material over some specified range of wavelengths.  In general, these instruments can perform at infrared, visible, or ultraviolet wavelengths, although all wavelengths will not be suitable for any particular application. 

The test piece may be a small piece of glass, a film being vacuum coated, a small vial of liquid, a large vat of liquid, or the atmosphere itself over some specified distance -- perhaps a kilometer or more. So the term "Transmissometer" does not offer many clues to the type of instrument required -- a Transmissometer is truly an "application-driven" instrument.
 
Test Piece or Substrate
Transmissometer Type
Special Features
Bench Type 
(self-contained optics)

Single or multiple wavelengths
 

Compact self-contained optics.
Remote head (special geometries)
Visible, infrared or ultraviolet
Remote Head configured to web size Custom remote head with one or more channels to monitor transmittance across width of moving web.
High Vacuum Remote Head
configured to web size.

Single or multiple Channels

Custom remote head configured for installation in High Vacuum chamber. Single or multiple channels to monitor Transmittance of web during coating process.
Remote Head configured for each particular application.

Single or multiple wavelengths

Sealed Remote head 
Submersible in non-corrosive liquids Configured for the application. 
Laser Transmissometer with remote retroreflector to measure transmittance and optical density of atmosphere over tens, hundreds or thousands of meters.
Typically applications include the measurement air quality and the detection of smoke smoke from forest fires.

Graham Optical Systems manufactures a wide range of transmissometers and can configure one specially for your application.  All of these instruments perform in full ambient lighting conditions -- no need to make the measurements in the dark. We can help with your selection of the appropriate Transmissometer for your application. 

             Some Standard Model Transmissometers manufactured by Graham Optical Systems 

MODEL
FEATURES
BENEFITS
Model 100
White Light source only
3-1/2 digit LCD Display 
Accuracy  +/- 0.1% 
Low power consumption
Battery Version Available (Model 100B)
Lowest Cost Model
Model 100V
White light or specific wavelength
4-1/2 digit LED or LCD Display 
Accuracy +/- 0.01%
Analog output
Accepts filter for any visible wavelength
Multiple Channel versions available
Extra digit gives higher accuracy
Connect to data logger or chart recorder
Model 100IR
Specific infrared wavelengths
4-1/2 digit LED or LCD Display
Accuracy +/- 0.01%
Analog Output
Customer selected wavelength
Multiple wavelength option
Analog Output
Connect to data logger or chart recorder
Model 500W
Remote Optical Head
Bench Top or Rack Mount available
4-1/2 digit LED or LCD Display
Accuracy +/-0.01%
Analog Output
Usable for measuring moving web
Model for use in high vacuum chamber
Submersible remote heads available
Multiple channels available
Connect to data logger or chart recorder
Model 1000C
Computerized model
Bench Top or Rack Mount
Onboard or remote optical head 
4-1/2 digit LED or LCD Display
Accuracy +/-0.01%
National Instruments LabVIEW
Turnkey System utilizing 
Data Logging capability
Process Control capability
Continuous chart recording
Multiple channels available
 Model 2000L
Laser Transmissometer
Computerized model with laser source
Bench Top or Rack Mount
Onboard or remote optical head 
4-1/2 digit LED or LCD Display
Accuracy +/-0.01%
National Instruments LabVIEW
Multiple channels available.
Visible or Infrared wavelengths
For Further Information, Prices, Delivery, call Gordon Graham today at 
(818) 700-1263 or send an email to the address below.

GRAHAM OPTICAL SYSTEMS,  9530 Topanga Canyon Blvd.,  Chatsworth, CA 91311

Phone (818) 700-1263     FAX   (818) 700-1627     E-mail: techinfo@grahamoptical.com

Copyright © 2014 Graham Optical Systems    All Rights Reserved

This page last updated June 9, 2014