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Information about keeping your instruments running accurately

Archive, August 2014. Switch to list view

    Posted by on in Environmental Monitoring

    Measuring humidity is essential in manufacturing plants, laboratories, museums, libraries, art galleries, and more. Too much moisture in the air—or too little—can influence the quality of products or the preservation of valuable materials. In production environments, particularly electronics manufacturing, pharmaceuticals, and breweries, as well as in storage units and chemical laboratories, high humidity can produce defects and low humidity can dry products out.b2ap3_thumbnail_HumidityImage.gif

    Because of the importance of measuring humidity, several types of instruments are available to perform this task and/or record measurements:

    • Thermohygrometers
    • Hygrothermographs
    • Humidity data loggers
    • Humidity indicators
    • Dew Point Meters
    • Humidity Recorders
    • Psychrometers
    • Heat stress monitors
    • Humidity Transmitters

    Each of these instruments requires calibration to maintain accuracy. If readings slip even a few points, the level of humidity may exceed recommended levels and affect the items you wish to protect and preserve.

    Make sure your parameters are controlled with regular calibration to ensure accuracy. For a list of recommended relative humidity percentages in production and process environments, check the Engineering ToolBox.

    InnoCal maintains several humidity chambers with chilled mirror sensors capable of generating and measuring between 5% to 95% relative humidity (% RH) and dew points down to -40°C. We can also bring our chilled mirror sensors to your location for on-site calibrations. Whether you have one asset or hundreds, large equipment or small, InnoCal can supply NIST-traceable calibrations on your humidity equipment.

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    Posted by on in Mechanical

    Are your balances in balance? Do your scales read accurately? When weighing materials for research, testing, or production, the measurement you record will affect critical process parameters. If this reading is off, even just a little, the precision and efficiency of your work is now in question.

    Ensure the validity of your weight and mass measurements with regular calibration. For balances, this means either using the services of a metrology lab or balance masses.

    Using Balance Masses to Calibrate Balances

    b2ap3_thumbnail_Balance-CalibrationMasses.gifElectronic balance masses are cylindrical shaped for easy stacking on balance weighing pans. Precision analytical masses feature two-piece construction and consist of a special austenitic alloy for high precision and stability. Use the guidance below to select the best calibration class for your application.

    UltraClass—With weight tolerances 50% greater than ASTM E617 Class 1 tolerances, these weights combine high precision with the advantage of two-piece construction (1 g and larger), avoiding costly replacement issues associated with one-piece weights
    ASTM Class 1—Appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg
    ASTM Class 4—For calibration of semi-analytical balances and for student use
    NIST Class F—Primarily used to test commercial weighing devices by state and local weights and measures officials, device installers, and service technicians. Class F weights may be used to test most accuracy Class III scales, all scales of Class III L or IIII, and scales not marked with a class designation
    ASTM Class 6—Meet the specifications of OIML R 111 Class M2

    To sustain the precision of weight and mass measurements, InnoCal maintains highly accurate comparison standards. We can customize test points to your specific needs including those dictated by USP. Along with balances and scales, we can also calibrate your calibration masses and check weights.

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    Posted by on in Electronics

    b2ap3_thumbnail_Ron-Weiser.gifWith more than 30 years of metrology experience, Ron Weiser knows a few things about calibrating electronic instruments such as multimeters, oscilloscopes, power supplies, flowmeters, and megohmmeters. For instance, he can tell you how calibration has changed.

    “I began my career repairing and calibrating RF test equipment,” said Ron. ”Calibration used to mean going through the adjustment procedure and checking a couple of points.” Of course, now calibration—and the instruments being calibrated—are both much more sophisticated.

    Yet, Ron’s love for the process has not changed. “Every day I keep learning more about the equipment we calibrate. I also enjoy going on-site to facilities and meeting the customers in person,” he said.

    Not too much beats metrology for Ron, but he does like to grill when he leaves the calibration lab.

    Learn more about InnoCal’s calibration services for electronic equipment. For support or any questions, contact us.

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