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Campbell Scientific SDM-INT8 8-Channel Interval Timer

$ 52.8

Availability: 150 in stock
  • Refund will be given as: Money Back
  • Item must be returned within: 30 Days
  • Brand: Campbell Scientific
  • Model: SDM-INT8
  • Restocking Fee: No
  • Return shipping will be paid by: Buyer
  • All returns accepted: Returns Accepted
  • MPN: SDM-INT8
  • Condition: Very lightly used condition and fully functional.

    Description

    Unit with mounting bracket only.
    From the manufacturer:
    Detailed Description
    The SDM-INT8 has eight channels that are individually programmed to record the timing of input voltage transitions (events). It uses this information to output:
    Period (ms)
    Frequency (kHz)
    Elapsed time between events on adjacent channels
    Number of counts measured on channel 2 between a “start” event on channel 1 and a “stop” event on any other channel
    Elapsed time between events on channel 1 and any other channel
    Pulse Counting (any channel can function as a pulse counter)
    High Level Voltage Input Pulses Schematic
    Low Level AC Voltage Input Schematic
    SDM Operation
    The data logger enables individual modules through an addressing scheme; up to 15 SDM-INT8s can be connected to one data logger. After a module is enabled, it operates independently of the data logger until additional commands are received or results are transmitted.
    Specifications
    Operating Voltage
    9.6 to 16 Vdc
    Current Drain
    13 to 20 mA (active)
    400 µA (quiescent)
    Maximum Timing Measurement
    16.7 s
    Resolution
    ±1 µs
    Operating Temperature
    -25° to +50°C
    Dimensions
    0.3 x 12.7 x 2.5 cm (8 x 5 x 1 in.)
    Weight
    0.82 kg (1.8 lb)
    High-Level Voltage Input Pulses
    Minimum Pulse Width
    2 µs
    Maximum Frequency (32-bit values)
    The maximum frequency specification for high-resolution (32-bit) values assumes all eight channels are used.
    5.1 kHz (averaging options)
    10 kHz (capturing all events)
    Maximum Frequency (16-bit values)
    The maximum frequency specifications for low-resolution (16-bit) values is for the execution interval averaging only.
    If number of channels programmed is
    1 channel—42.5 kHz
    2 channels—17.5 kHz
    3 channels—11 kHz
    4 channels—8.6 kHz
    5 channels—5.2 kHz
    6 channels—4.8 kHz
    7 channels—4.5 kHz
    8 channels—4.28 kHz
    Low-Level AC Voltage Input
    AC Voltage
    20 mV RMS (min.) ac voltage
    20000 mV RMS (max.) ac voltage
    Input Hysteresis
    11 mV
    Minimum Frequency
    1 Hz
    Maximum Frequency
    100 kHz (20 mV min. RMS)
    400 kHz (50 mV min. RMS)
    1000 kHz (150 mV min. RMS)
    4000 kHz (2.5 to 20 V min. RMS)
    Compatibility
    Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.
    Data Loggers
    Product
    Compatible
    Note
    21X (retired)
    CR10 (retired)
    CR1000
    CR10X (retired)
    CR200X (retired)
    CR206X (retired)
    CR211X (retired)
    CR216X (retired)
    CR23X (retired)
    CR295X (retired)
    CR3000
    SDMs are connected to the ports labeled SDM-C1, SDM-C2, and SDM-C3.
    CR500 (retired)
    CR5000 (retired)
    SDMs are connected to the ports labeled SDM-C1, SDM-C2, and SDM-C3.
    CR510 (retired)
    CR6
    CR800
    CR850
    CR9000 (retired)
    SDMs connect to ports provided on the CR9080 PAM module.
    CR9000X
    SDMs connect to ports provided on the CR9032 CPU module.
    Mounting Equipment
    Product
    Compatible
    Note
    ENC10/12
    ENC10/12R
    ENC12/14
    ENC14/16
    ENC16/18
    ENC24/30
    ENC24/30S
    Additional Compatibility Information
    Data Logger Considerations
    Programming
    The SDMINT8 instruction controls the SDM-INT8 operation in CRBasic. Instruction 101 controls the SDM-INT8 operation in Edlog.
    Power Considerations
    The SDM-INT8 draws 20 mA. In most applications, the data logger’s sealed rechargeable power supply can be used. The data logger’s alkaline power supply has sufficient capacity to operate the SDM-INT8 during short-term installations only.
    Enclosure Considerations
    The SDM-INT8 should be housed in an environmental enclosure. A bracket is shipped with the SDM-INT8 for mounting it to an enclosure backplate.