DC425 Absolute Analog Rotary Shaft Encoder

DC425 Absolute Analog Rotary Shaft Encoder
  • IP67 rating
  • 5/8" stainless steel shaft
  • Aluminum housing
  • Ideal for high-shock applications - withstands mechanical shock & vibration
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    DC425 Analog user manual











    AMCI DC425 Absolute Analog Multi-turn Rotary Shaft Encoder

    The DC425 DuraCoder is an absolute analog multi-turn rotary shaft encoder, offering an analog current or analog voltage output over single or multiple turns.

    Built on DuraCoder's foundation of outstanding durability and value, the DC425 was originally designed for outdoor process control applications. Features like an IP67 rated aluminum housing (when used w/MS161 connector), 5/8" stainless steel shaft, and resolver-based sensing technology contribute to the DuraCoder's fail-safe reliability, making it the perfect choice for hydroelectric, water treatment, or water purification facilities.

    When customers demand reliable absolute analog multi-turn rotary shaft encoder performance in an environment of continuous mechanical shock and vibrations, and exposure to air and liquid-borne contaminants, the choice is easy - DuraCoder.

    Available Versions (x=any selection)

    DC425-xxxxxx: Analog, single and multi-turn, 1-100 turns
    Price | $2,790/ea

    DC425-xxxxxx: Analog, multi-turn, greater than 100 turns
    (Additional) | $3,030 - $4,620/ea

    Note: Pricing is US Domestic only




    Consult the factory for availability

    Contact Sales

    Heavy-Duty Reliability

    AMCI's DuraCoder rotary shaft encoders are resolver-based, providing the heaviest duty 2.5" rotary shaft encoder available, anywhere. Several features set this family of rotary encoders apart from the competition; namely, its cost saving durability, field programmability, and wide range of applications.

    •     Cost-saving durability
    •     Resolver-based reliability
    •     Field programmable output resolution
    •     Wide range of applications
    •     More...

    AMCI resolver-based rotary shaft encoders have earned a "bulletproof" reputation among established machine builders and successful system integrators.

    The AMCI DuraCoder product line boasts up to an IP67 rating. Solid shaft and hub shaft versions are available, and both types incorporate an oversized double row bearing that supports shaft loads up to 100 lbs. radial / 50 lbs. axial.

    Inside AMCI's Rotary Encoders


    Mechanical Specifications

    DC425 Absolute Analog Multi-turn Rotary Shaft Encoder
    Shaft:5/8" diameter 303 stainless steel
    Shaft loading:400 lbs. radial/ 200 lbs. axial maximum shaft loading

    Bearing life rated at 2x10^9 revolutions minimum at maximum shaft load
    Starting torque:8 oz. in max @ 25°C
    Moment of inertia:20.00 x 10^-4 oz-in-sec^2
    Weight:5.5 lbs.
    Housing: cast aluminum

    Mating Connector: (sold seperately)

    AMCI Part NumberMilitary Equivalent
    90 DegreeMS-18MS3108A16S-1S


    Connector Pinout: (MS connector versions only)

    Military Equivalent Part # MS3102E16S-1P

    BVdc common
    CAnalog output
    DCase ground
    ENo connection
    FNo connection
    GNo connection

    Electrical Specifications

    DC425 Absolute Analog Multi-turn Rotary Shaft Encoder
    Input voltage:18 to 30 Vdc
    24 Vdc optimal
    Input power:3.75 W max.
    Available # of Turns for Full Scale Output: (not field selectable)1, 2, 4, 5, 10, 20, 25, 50, or 100
    Current output:4 to 20 mA
    12 bit resolution per turn
    16 bit resolution max.
    Current load:650 ohm @ 18Vdc input
    950 ohm @ 24Vdc input
    1250 ohm @ 30Vdc input
    Voltage output:0 to 10 Vdc
    12 bit resolution per turn
    16 bit resolution max.
    Voltage load:2k ohm minimum


    DC425 Absolute Analog Multi-turn Rotary Shaft Encoder
    Enclosure:IP67 (valid only with working shaft seal, properly installed plastic hole plugs and AMCI MS-161 mating connector)
    Shock:50 G's for 11 mSec
    Vibration:20 g, 5 to 2,000 Hz
    Operating temperature:-40° C to 85° C standard

    Technical Drawings

    DC425 - Foot Mount with Gas Tube Arrestor

    DC425 - Foot Mount with Gas Tube Arrestor

    DC425 - Foot Mount with Side MS connector

    DC425 - Foot Mount with Side MS connector

    DC425 - Foot Mount with End MS connector

    DC425 - Foot Mount with End MS connector



    Cables Learn More


    Connectors Learn More

    AMCI makes buying PLC-based automation easy...our sales group will help you:

    • Select the right product for your application
    • Pay by credit card using your Visa, Mastercard, Discover, or American Express
    • Coordinate alternative payment methods (P.O., wire transfers, etc.)
    • Locate a distributor convenient to your region of the country

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    Contact AMCI Sales today:



    Ordering Information

    AMCI's sales team takes the hassle out of placing your order. We'll advise on product selection, alternatives, lead times, and present you with point of purchase options. Call (860) 585-1254 or email AMCI sales today! 

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    Create your part number

    Generate your absolute multi-turn analog rotary shaft encoder part number by using this helpful ordering guide. Starting from left to right, use the following diagram and table to choose the desired options. Each gray box must contain a single alphanumeric character. Please note the following…

    • Customers concerned with availability should request lead times on units with both the side and end connector location options.

    Part Number CharacterAbsolute Analog DuraCoder SelectionsMost Popular Selections
    Mounting style:F = Front Mount
    T = Foot Mount
    (Front mount)
    Output Type:Current Output
    1 = 4 to 20mA
    2 = 0 to 20mA
    3 = 0 to 24mA
    Voltage Output
    4 = 0 to 5Vdc
    5 = 0 to 10Vdc
    6 = -5 to 5Vdc
    7 = -10 to +10Vdc
    8 = -5 to 0Vdc
    9 = -10 to 0Vdc
    (4 to 20 mA)


    (0 to 10 Vdc)
    Output Direction:P = CCW increasing looking at the shaft
    N = CW increasing looking at the shaft
    (CW increasing)
    Full Scale # of turns:
    1 = 1 turn
    2 = 2 turns
    3 = 4 turns
    4 = 5 turns
    5 = 10 turns
    6 = 20 turns
    7 = 25 turns
    8 = 50 turns
    9 = 100 turns
    B = 200 turns
    C = 250 turns
    0 = 1,000 turns
    (10 turns)


    (50 turns)
    Connector Type:1 = MS connector1
    (MS connector)
    Connector location:S = Side
    E = End
    (MS connector version only;
    mating connector sold separately)
    (Side connector)


    DC425 Product Sheet

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