Model 1000C 
Computerized Transmissometers 


  Model 100V

  Model 100IR

  Model 500W

  Model 2000L
  Laser Transmissometer



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Basic Price for single channel $6,495.00 FOB Chatsworth, CaliforniaModel 1000C
This is a computerized Model that may be configured in all of the same formats as the Model 500W.  It permits the collection of both numeric and graphic data.   Because it offers continuous output, the Model 1000C is capable of being used for process control as well as storage of data for quality assurance. Available in single or multiple channels. The Model 1000C is sold complete with computer and data acquisition hardware and software.  If you tell us what you are measuring and what type of data you wish to recover, we can configure a system specially for your needs and will provide you with a quotation without obligation.

Configured as a bench top instrument as shown at the right, or as a rack mount, as shown below, the Model 1000C transmissometer provides a direct readout of Transmittance so it may be used with or without its computer.  The 2-channel versions shown below can be configured for measurement of transmittance at two separate positions, in two different directions for materials that are not isotropic, or at two different wavelengths.

Multiple channels can be provided, all with separate readouts if desired, and all connected to the computer for data storage and analysis using National Instruments LabVIEW Software.

Rack mounted systems are Ideal for multiple channel configurations such as the Dual-Wavelength IRvis model shown below. 

Using a remote retroreflective target, this two channel Laser Transmissometer permits measurement of Transmittance and Optical Density at 1550 nm wavelength and 635 nm wavelength. The instrument uses laser diodes as sources.  At time of purchase the customer may specify the desired laser diode wavelength for each channel.  Multiple channels can be provided if required. The remote optical heads of this configuration are shown below and at the right, mounted on a tripod.

TWO CHANNEL LASER TRANSMISSOMETER -- Upper tubes are receivers, Lower tubes are transmitters

Each channel has a separate readout on the Transmissometer Console as well as its own set of controls and is monitored independently by the computer with multiple graphs to provide real-time status as well as data storage. 

Standard model intended for use with the remote retroreflector at a distance of 10 meters.  Longer path lengths can be configured.  Remote heads can be provided for dusty environments, moist or wet areas or for underwater use. 

Typical LabVIEW screen provide multiple real-time charts of Transmittance, % Transmittance (0-10%) % Transmittance (0-1%) and Optical Density (1-5).


Below is a Model 100V dual Channel Transmissometer -- this one operating at both visible and infrared wavelengths.  In this model, for economy, the two channels share a readout.  However, each channel has its own analog output which can be connected to a data logger or chart recorder. This model could be retrofitted to perform as a Model 1000C with the full benefit that the computer provides.


Wide selection of wavelengths available White light

Selection of  visible wavelengths using filters

Selection of IR wavelengths available

Test beam 10.0 mm diameter Averages transmittance over larger area
4-1/2 digit LED or LCD Readout  (+/- 0.02% accuracy) Large LED readouts may be read at a distance
Multiple channels available  Visible, IR, or assortment of visible and IR

Remote Optical Head
Usable for measuring moving web

Model for use in high vacuum chamber

Submersible remote heads available

Bench Top or Rack Mount Customer's choice
Analog output for each channel Permits data logging or chart recording of each channel
Power 117 volts 60 Hz or 230 volts 50 Hz Wired to connect to customer's power source.
Standard limited warranty on parts and labor 1 year

For Further Information, call Gordon Graham today at (818) 700-1263  E-Mail:
Graham Optical Systems,  9530 Topanga Canyon Blvd.,  Chatsworth, CA 91311
Copyright © 2014 Graham Optical Systems  All Rights Reserved     LabVIEW is a Trademark of National Instruments
This page last updated July 16, 2014