Mini monitor delivers a bright illuminated status display

Inelco Hunter now offers the Desco ESD Mini Monitor. The monitor's enclosure features an illuminated status display, making the PCB and the worksurface highly visible to the operator and supervisor. Green indicates that the operator and worksurface are grounded, red indicates a grounding failure, and blue indicates when the operator port is vacant. High visibility aids operator awareness, particularly when wearing headphones, and the audible alarm cannot be heard.

With an alarm response time of less than 50ms, the device quickly notifies the operator should the wrist strap or worksurface lose its path to ground. This enables the monitor to catch the moment when wrist cords degrade and lose continuity.

The device features ParkSnap, permitting the operator to disconnect and park a wristband when leaving the workstation without creating a false alarm. Touch the ParkSnap or Park Delay switch, and the monitor's audible alarm will be disabled for approximately eight seconds. This time can be utilised to disconnect the wrist cord from the wristband and attach it to the ParkSnap or remove the banana plug from the jack. Upon returning to the workstation and disconnecting the wrist cord from the ParkSnap, the operator has approximately eight seconds to reconnect the wrist cord to a worn wristband before activating the alarm.

Wave Distortion Technology is employed – a very reliable technology for the Continuous Monitoring of Single-Wire (Conductor) Wrist Straps. 

Wave Distortion or vector impedance works by applying a continuous test voltage of 1.2V peak-to-peak at 1µA to 2µA (0.000002A) to the wrist strap that is connected to the continuous or constant monitor. The test voltage creates a square wave that the monitor circuit compares to established patterns. By monitoring the 'distortions', or shape of the square wave, Wave Distortion Technology determines if the monitored circuit is complete – the operator is in the circuit and the total equivalent DC resistance is within specifications. Wave Distortion Technology delivers a very fast alarm time and minimal false alarms.