SDM-INT8 CAMPBELL | Alldatasheet
Document overview
- Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
- PDF pages: 2
Technical content
5] SCIENTIFIC WHEN MEASUREMENTS MATTER Overview The SDM-INT8 outputs timing data to a Campbell Scientific datalogger. The datalogger can process the timing data to Benefits and Features ) Allows individual programming for each of the eight channels ) Includes an internal microprocessor that allows measurement independent of data logger's execution interval Technical 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) EE(EREE SDM-INT8 8-Channel Interval Timer Includes Internal Microprocessor Allows independent measurement intervals calculate RPM, duty cycle, velocity, crank angle, etc. ) Outputs period, pulse width, frequency, counts, or time intervals ) Records results as execution interval averages, continuous averages, specified interval averages, or capture all events High Level Voltage Input Pulses Schematic HIGH LEVEL 351020V <—— Faling Edge Transition from below | Transition from above 15Vtoabove 35V | 35V to below 1.5V 201015V Low Level AC Voltage Input Schematic LOW LEVEL 20mV to 20V AMS /[g A Edge For comprehensive details, visit: www.campbellsci.eu/sdm-int8 ‘
The data logger enables individual modules through an addressing scheme; up to 15 SDM-INT8s can be connected Specifications Operating Voltage 96to 16 Vdc Current Drain 13 t0 20 mA (active) 400 pA (quiescent) Maximum Timing 16.7s Measurement Resolution +1 s Operating Temperature ~ -25°to +50°C 03x127x25cm(8x5x1in) Weight 082kg (18 1b) Dimensions High-Level Voltage Input Pulses Minimum Pulse Width 2ps Maximum Frequency (32- ) 10 kHz (capturing all events) bit values) The maximum frequency spedification for high- resolution (32-bit) values assumes all eight channels are used. 5.1 kHz (averaging options) Maximum Frequency (16- The maximum frequency bit values) specifications for low- resolution (16-bit) values is for the execution interval averaging only. 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. If number of channels programmed is 1 channel—42.5 kHz 2 channels—17.5 kHz 3 channels—11 kHz 4 channels—86 kHz 5channels—52 kHz 6 channels—4.8 kHz 7 channels—4.5 kHz 8 channels—4.28 kHz Low-Level AC Voltage Input ACVoltage 20000 mV RMS (max) ac voltage 20 mV RMS (min.) ac voltage Input Hysteresis 11 mv Minimum Frequency 1Hz Maximum Frequency 100 kHz (20 mV min. RMS) 400 kHz (50 mV min. RMS) 1000 kHz (150 mV min. RMS) 4000 kHz (2.5 t0 20 V min. RMS) a For comprehensive details, visit: www.campbellsci.eu/sdm-int8 CAMPBELL 80 Hathern Road, Shepshed, LE12 9GX UK | +(0)1509 828888 | sale@campbellsci.couk | www.campbellsci.eu SCIENTIFIC AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | INDIA | SOUTH AFRICA | SPAIN | THAILAND | UK | USA ©2019 Campbell Scientific, Ltd. | 12/17/2019