If you are using electro-mechanical relays to control the switching of your heating process, your heater’s life may be in jeopardy! Due to the slow switching frequencies of electro- mechanical relays, your heaters will experience wide temperature fluctuations between cycles. This causes the heater to expand and contract excessively, and experience what is known as thermal stress. Not only does this cause premature heater failure, it results in poor process control.
Back to Solid State SCRs
What’s the solution? The ZPAC Solid State Relay, made by Zesta Engineering. Its fast switching capabilities allow for high speed cycling, leaving no time for wide temperature swings, and therefore no time for heater expansion and con- traction. This reduces thermal stress, and therefore lengthens heater life. Your process will heat up smoothly, and you will have better temperature control.
Less stress, longer life