K7TM

The K7TM Heater Condition Monitoring device can measure the resistance values of resistive heaters properly and periodically allowing for heater condition and trend monitoring both on site and remotely.

Heater resistance value trends are not able to be determined using the basic voltage/current calculation since the temperature controller and heater characteristics influence this calculation. The K7TM is able to measure the resistance values regardless of these influences by filtering them out of this calculation. Additionally, the K7TM is able to monitor the deterioration trends in heater resistance by comparison with historical resistance values when used in the same environment.

Depending on the type of heater, the resistance value may vary greatly depending on the temperature. Heater temperature characteristics need to be considered in order to monitor proper heater deterioration trends. Therefore, it is necessar y to constantly monitor the heater resistance value at the same timing as the heater temperature.

K7TM calculates the rate of change of the resistance value (reference resistance value changerate) from the resistance value (reference resistance value) when replacing the heater and the cur rent heater resistance value, and utilizes it as an indicator to measure the degradation trend.

Since the temperature is controlled, the temperature of the heater is constant, but the resistance of the heater increases with deterioration.

The K7TM allows you to monitor condition both on site and remote without requiring on site visits.

Condition monitoring can be achieved by using a CT clamp on the power line of the heater and connecting voltage lines to each side of the heater.

By converting condition of the heater into a numerical value called the rate of change of the heater resistance value, scheduled maintenance based on the numerical value becomes possible. It also enables maintenance of heater equipment that does not depend on skilled personnel.

The K7TM can monitor the state of the heater by the rate of change of the heater resistance value and monitor the state and tendency of each heater, so it is possible to determine when replacement is necessary, so it is unplanned while utilizing the remaining life of the heater. You can reduce the possibility of downtime. In addition, maintenance that does not depend on skilled people becomes possible.

Previously there were challenges in determining correct service and replacement time on heater equipment. Since the K7TM can capture deterioration trends in heater resistance values change rate and trigger alarms when a threshold is reached, the user is able to determine the optimal time to service or replace heater equipment.