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    Hygrostats

    Hygrostats are electronic devices that are designed to control the relative air humidity levels inside enclosures to prevent the formation of condensation and corrosion and damage to electrical components.

    How do hygrostats work

    Hygrostats respond to humidity range and not temperature. They are typically stored within enclosures and connected to enclosure heaters. If the pre-set humidity level is reached, the hygrostat will turn on the heater or fan to raise the condensation point or the dew point, which will prevent any malfunction or damage to the electrical components and systems that could be caused by corrosion or condensation.

    Some devices and systems use a combination of hygrostats and enclosure thermostats to prevent condensation build-up and ensure that the temperature inside the control cabinet is correct.

    What are hygrostats used for?

    Hygrostats are used to maintain critical relative humidity range in components and systems such as:

    • Telecommunication systems
    • Ticket dispensers
    • Electrical and electronic enclosures
    • Display panels
    • Automatic teller machines (ATM's)
    • Parking and access control systems

    Hygrostats can also be used to control warning lights, cooling fans and other devices.

    19 Products showing for Hygrostats

    Eaton Hygrostat, Adjustable, 40 → 90%RH, 24 → 240 V ac
    • RS Stock No. 120-731
    • Mfr. Part No. 167267 HYG
    Each
    MYR907.39
    Eaton
    Adjustable
    -
    40 → 90%RH
    24 → 240 V ac
    90%RH
    40%RH
    -
    -
    STEGO Hygrostat, Preset, 65%RH, 230 V ac, DIN Rail
    • RS Stock No. 697-4427
    • Mfr. Part No. 01246.0-00
    Each
    MYR337.41
    STEGO
    Preset
    DIN Rail
    65%RH
    230 V ac
    -
    -
    -
    -
    Siemens Hygrostat, Adjustable, 35 → 95%RH, 250 V, Surface Mount
    • RS Stock No. 236-8556
    • Mfr. Part No. 8MR2170-1C
    Each
    MYR1,316.89
    Siemens
    Adjustable
    Surface Mount
    35 → 95%RH
    250 V
    95%RH
    35%RH
    -
    -
    STEGO Hygrostat, 50 → 90%RH, 100 → 240 V ac
    • RS Stock No. 785-8092
    • Mfr. Part No. 01231.0-01
    Each
    MYR551.20
    STEGO
    -
    -
    50 → 90%RH
    100 → 240 V ac
    90%RH
    50%RH
    -
    -
    Siemens Hygrostat, Adjustable, 40%RH, 230 V ac, Mounting Clip
    • RS Stock No. 159-560
    • Mfr. Part No. 8MR2170-1AF
    Each
    MYR555.76
    Siemens
    Adjustable
    Mounting Clip
    40%RH
    230 V ac
    90%RH
    40%RH
    -
    -
    Siemens Hygrostat, Flange, Screw
    • RS Stock No. 639-114
    • Mfr. Part No. QFM81.21 / BPZ:QFM81.21
    Each
    MYR1,902.97
    Siemens
    -
    Flange, Screw
    -
    -
    95%RH
    15%RH
    -
    -
    Siemens Hygrostat, Adjustable, 50 → 90%RH, 100 → 240 V, DIN Rail
    • RS Stock No. 225-5484
    • Mfr. Part No. 8MR2170-4E
    Each
    MYR1,881.80
    Siemens
    Adjustable
    DIN Rail
    50 → 90%RH
    100 → 240 V
    90%RH
    50%RH
    -
    -
    Siemens Hygrostat, Flange, Screw
    • RS Stock No. 639-113
    • Mfr. Part No. QFM81.2 / BPZ:QFM81.2
    Each
    MYR1,626.05
    Siemens
    -
    Flange, Screw
    -
    -
    95%RH
    15%RH
    -
    -
    STEGO Hygrostat, 50 → 90%RH, 24 → 48 V dc
    • RS Stock No. 785-8083
    • Mfr. Part No. 01230.1-00
    Each
    MYR839.84
    STEGO
    -
    -
    50 → 90%RH
    24 → 48 V dc
    90%RH
    50%RH
    -
    -
    Hygrostat UL,Changeover,40-90RH
    • RS Stock No. 562-616
    • Mfr. Part No. 17207000000
    Each
    MYR347.74
    Pfannenberg
    -
    -
    -
    -
    -
    -
    -
    -
    Pfannenberg Hygrostat, Adjustable, 40 → 90%RH, 230 V ac
    • RS Stock No. 497-626
    • Mfr. Part No. 17218100000
    Each
    MYR933.43
    Pfannenberg
    Adjustable
    -
    40 → 90%RH
    230 V ac
    40%RH
    90%RH
    -
    -
    Better World
    Schneider Electric Hygrostat, Adjustable, 20 → 80%RH, 200 → 240 V ac
    • RS Stock No. 177-8981
    • Mfr. Part No. NSYCCOHY230VID
    Each
    MYR1,163.92
    Schneider Electric
    Adjustable
    -
    20 → 80%RH
    200 → 240 V ac
    80%RH
    20%RH
    Yes
    Green Premium
    Siemens Hygrostat, Adjustable, 65%RH, 230 V, DIN Rail
    • RS Stock No. 225-5483
    • Mfr. Part No. 8MR2170-1BF
    Each
    MYR771.93
    Siemens
    Adjustable
    DIN Rail
    65%RH
    230 V
    65%RH
    -
    -
    -
    Pfannenberg Hygrostat, 40 → 90%RH, 230 V ac/dc
    • RS Stock No. 667-6757
    • Mfr. Part No. FLZ610 17218100000
    Each
    MYR1,226.36
    Pfannenberg
    -
    -
    40 → 90%RH
    230 V ac/dc
    90%RH
    40%RH
    -
    -
    Pfannenberg Hygrostat, Adjustable, 40 → 90%RH
    • RS Stock No. 497-565
    • Mfr. Part No. 17207000000
    Each
    MYR358.24
    Pfannenberg
    Adjustable
    -
    40 → 90%RH
    -
    40%RH
    90%RH
    -
    -
    STEGO Hygrostat, Adjustable, 40 → 90%RH, 120 V ac, DIN Rail
    • RS Stock No. 697-4421
    • Mfr. Part No. 01245.9-00
    Each
    MYR533.52
    STEGO
    Adjustable
    DIN Rail
    40 → 90%RH
    120 V ac
    90%RH
    40%RH
    -
    -
    STEGO Hygrostat, 50 → 90%RH, 100 → 240 V ac
    • RS Stock No. 785-8089
    • Mfr. Part No. 01230.0-00
    Each
    MYR785.98
    STEGO
    -
    -
    50 → 90%RH
    100 → 240 V ac
    90%RH
    50%RH
    -
    -
    Better World
    Schneider Electric Hygrostat, Adjustable, 20 → 80%RH, 140 V, DIN Rail
    • RS Stock No. 211-2709
    • Mfr. Part No. NSYCCOHYT120VID
    Each
    MYR2,008.73
    Schneider Electric
    Adjustable
    DIN Rail
    20 → 80%RH
    140 V
    80%RH
    20%RH
    Yes
    Green Premium
    STEGO Hygrostat, Adjustable, 40 → 90%RH, 230 V ac, DIN Rail
    • RS Stock No. 697-4424
    • Mfr. Part No. 01245.0-00
    Each
    MYR366.52
    STEGO
    Adjustable
    DIN Rail
    40 → 90%RH
    230 V ac
    90%RH
    40%RH
    -
    -
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