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    How to Test Sensitivity Of Bosch/DS Smokes

    Issue

    What should the meter reading be when testing the sensitivity of a Bosch smoke detector using the D1005 test cable?

    Solution

    Using a Digital Volt Meter (DVM)

    The meter reading will be one-half of the detector's current sensitivity and the rated sensitivity range should be between 2.1Vdc and 3.9Vdc. Therefore a proper reading is between 1.05Vdc and 1.95Vdc.

    1. When available, connect the D1005 Test cable into the detector’s voltage calibration pins.
    2. Connect the negative meter lead to the D1005 black wire. Connect the positive meter lead to the D1005 red wire, note the D1005 white wire is not used.
    3. A meter may also be used by connecting the positive meter lead to the center calibration voltage pin and the negative lead to either outside calibration voltage pin.
    4. The voltage measured equals half the sensitivity (in %/ft obscuration) of the smoke detector. An acceptable reading is between 1.05Vdc and 1.95Vdc with 1.5Vdc being perfect.

    This applies to the following part numbers:

    D1005, DS250, MX250, D7050, D7050TH, D285, D7050DH, D263THS, D273, D273ES, DS260, DS282, DS282-CR, DS284, DS284-CR, DS284ES, DS250TH, DS250DH, DS282TH, DS282THS, DS282THC, DS284TH, DS284THS, DS284THR, DS284THSR, DS284THCS, DS284THC, DS284IS, DS284THES, MX250, MX250TH, D286, D263TH, D263THS, D263THC, D273THR, D273THSR, D273THC, D273THCS, D273THE, D273THS, D273TH, D273IS, MX250DH, MX280, MX280TH

    Version history
    Revision #:
    3 of 3
    Last update:
    ‎02-16-2021 07:14 PM
    Updated by:
     
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