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Loop Calibrator

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  • 23-11-2014 6:27pm
    #1
    grousedogtom
    Registered Users Posts: 463 ✭✭


    Hi
    I'm looking to purchase a current loop Calibrator, I need to troubleshoot 4 20mA current loops every so often. I don't need anything top of the range just something basic as it will only be used maybe once every 2 or 3 weeks. Any models I've looked at online seem expensive for something that won't be used much. I'm looking at the Druck UPS-ll, has anyone experience with this Calibrator or any recommendations would be helpful. Thanks


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    #2
    braddun
    Banned (with Prison Access) Posts: 1,221 ✭✭✭braddun


    use a digital multimeter (DMM), or a mA clamp meter


    Some loops show random fluctuations or intermittent faults that tend not to happen while a technician is watching. The solution here is to use a clamp meter with a scaled mA output. In this mode, the meter measures the current in the loop without breaking the circuit, and produces an identical and isolated mA output. Feed that output to a DMM with a logging function; by allowing the DMM to record over time, any disturbance will be recorded


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    #3
    grousedogtom
    Registered Users Posts: 463 ✭✭grousedogtom


    Thanks for the reply, unfortunately I probably wouldn't have enough work for a mA clamp meter as they seem quite expensive


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