4 Digits Time Interval Meter, Auto Ranging, Fixed Ranges [TI103C].  which ideally suited to record very short time intervals e.g: trip time of relays,
contactors, MCBs, fuses, ELCBs and other similar equipment’s. 

Features:

• Contact type : Measures time interval between external contact closing at one input (C1) to
  another external contact closing at the second input (C2) .
•  Pick up timer (PUT) :Measures time interval between external contact closing at one input (C1) to another external contact closing at the second input (C2) .

Applications:

• External switch S (DPDT) is turned ON to power R. The time between switch S closure to relay NC contact opening is measured across NO (C2) contact of TI103C and NC (C1) contact kept shorted to +V.