Kobold DON-05Bx, Operating Instructions Manual, Page: 12 / 55

DON
page 12 DON K18/0418
7.3.2 Reed Switch Pulse Output
The DON reed switch output is a SPST potential free N/O 2-wire output. This is a
passive output so no power is required. The output may also be used with an
appropriate intrinsically safe barrier for use in hazardous locations. If the intention
is to operate the dry-reed contact impulse output in ATEX areas as simple
apparatus, only the R0 option may be used. Note: when using the reed switch
output the liquid temperature must not change at a rate greater than 10 ºC per
minute (50 ºF per minute).
Average electrical endurance of switching contact (MTTF – Mean Time To First
Failure):
Max. switching voltage (100 V/10 mA) 5x10
5
switching cycles
Max. current load (20 V/500 mA) 5x10
6
switching cycles
Min. load (<5 V/10 mA) 5x10
8
switching cycles
Switching capacity : Max. 30 V
DC
, max. 200 mA