environmental monitoring device
The Trig-Tek™ 850A/B Contact Chatter Detector provides a means of monitoring the continuity of switch or relay contacts while being subjected to environmental stress.
10 channelsAdjustable time interval (1μs to 999 ms)Individual fault light and fault latch per channelOpen or closed contact detection
The 850A/B has 10 channels, each with a separate current source to activate the contacts. Contact “Curr” dial and “X1-X0.1” switch sets the current of all the channels simultaneously for 0.1 to 11 mA. “Timing Interval” controls provide for setting from 1 to 999 μs or 1 to 999 ms for the maximum time a discontinuity can exist. Each channel has a “Fault” LED that will illuminate if a discontinuity exists for a longer period of time than is set by the “Timing Interval” switch.
The LED will remain illuminated until reset either by the front panel “Reset” switch or remotely via a reset terminal. The 850A/B has a terminal strip where the fault
condition of each channel can be recorded “Low” (No Fault) or “High” (Fault). Either Normally Closed (NC) or Normally Open (NO) contacts can be monitored.
A toggle switch on each channel permits selection of “NC” or “NO”-type contacts.
The 850A/B has 10 channels, each with a separate current source to activate the contacts. Contact "Curr" dial and "X1-X0.1" switch sets the current of all the channels simultaneously for 0.1 to 11 mA.