DEFENDER
Primary Standard Calibrator

      Designed exclusively for the occupational health and safety industry and built on next-generation DryCal® technology!

      Menu-driven system for complete reading flexibility

      Highly accurate and repeatable

     Laboratory accuracy certified by NIST through NVLAP and backed by ISO 17025 accreditation, ANSI Z-540, and NIST Handbook 150

     Volumetric accuracy (510 and 520 models): 1% of reading

      Choice of 3 wide flow ranges

     5 to 500 ml

     50 ml to 5 L

     300 ml to 30 L

      Large illuminated graphical display with zoom feature

      Sleek new design - molded case slim enough for a briefcase and only 29 oz

      520 model includes automatic temperature and pressure sensors for enhanced audit trail

      Integrated serial PC interface and Optimizer Software for data transfer to a PC

      RoHS compliant - lead-free components

      Easy menu system allows user to select:

     Single, continuous (hands-free), or time interval readings

     Flow unit display - ml, L, cc, or cfm

     Number of readings in an average - up to 100

     Time interval between readings - 1 to 60 minutes

     Auto shut-off

      Sleek design, more robust, and only 29 oz

     Smooth molded case with rubber handgrips

     Slim enough to fit into a briefcase

     Interior shock absorbers for field use

     Improved internal valve design for greater reliability

     Large illuminated flow cell viewing window

      Integrated serial PC interface and software for data transfer and reporting

     Optimizer 110 Software (included) provides a link to your PC and automatically transfers readings to be saved as a text file.

      520 model automatic features for enhanced audit trail

     Integrated temperature sensors and pressure transducers are directly in flow stream

     Capture ambient temperature and pressure data - no additional instruments needed

     Enhance audit trail by including temperature and pressure conditions during air sampler calibrations

Two DEFENDER Models to Meet Your Applications

Defender 510: 1% accuracy volumetric calibration for personal air samplers and other volumetric instruments

Defender 520: Adds ambient temperature and pressure sensors to record calibration conditions for enhanced audit trail

Laboratory and Defender Accuracy

Laboratory accuracy is certified by NIST through NVLAP and backed by ISO 17025 accreditation, ANSI Z-540, and NIST Handbook 150. Volumetric accuracy for the Defender 510 and 520 models is 1% of reading.