Desco’s Mini Zero Volt Monitor (ZVM) is a single station continuous monitor for operator, ESD work surface and metal tool fixture ground. It continuously monitors the ground integrity and charge generation of one operator, as well as the ground integrity for one ESD workstation and one metal tool fixture. It eliminates the need for periodic testing and record keeping of wrist straps.
The Mini ZVM is designed with Dual Polarity Technology for true continuous monitoring (versus pulsed or intermittent) of wrist strap functionality (path to ground and presence of 1 Meg Resistor) and operator safety according to accepted industry standards without capacitance variations from personnel or environment. Dual Polarity Technology uses dual-wire wrist cords to place positive voltage on one line and negative voltage on the other, resulting in near zero voltage at the operator.
The Mini ZVM will also detect Direct Current Voltage (VDC) that is greater than ±2.5 VDC if the operator generates or comes in contact with a voltage that would be dangerous to an ESD susceptible item. Each Mini ZVM is calibrated with accepted procedures and standards traceable to the National Institute of Standards and Technology (NIST) and includes a NIST certificate.