2020 Trade Shows are cancelled so let DYNOmite bring them to you...

Trade Show Update


Trade Shows have been cancelled for 2020 and we are disappointed as you are. But in anticipation of this reality, we have been working hard to create a new-to-the-world virtual booth for our devoted Customers. You will hear more about this in the next weeks, but look for:

  1. Live streaming content with industry experts
  2. Demonstrations with service techs of our equipment
  3. Live chat with Sales and Service staff to discuss industry needs and innovations
  4. Watch as some of the most popular SuperFlow and DYNOMite products are being built
  5. the coolest opportunity the industry has ever experienced – YOUR chance to interact with our Innovation team to finalize versions of software and controls

DYNOmite views this year as an opportunity to engage with you in ways we haven't been able to in the past. Please visit our show page to register for additional information as it becomes available.

EGT Response Time

Read how to attaining quicker reaction times from EGT thermocouples via DYNO-MAX.

Advanced | 07.28.20

How can I speed up my EGTs response time?

Quicker EGT response time… can be simulated using advanced features in DYNO-MAX “Pro’s” Formula Editor. This example user editable formula, named “Extra Fast EGT #1,” has been included since Version 9.32:

Exhaust Temp #1 + (d/dt ( 0.500 {Exhaust Temp #1} * 0.800 )

Understand that all thermocouple elements take time to register temperature changes. This response lag is referred to as the thermocouple’s “Time Constant,” and represents the seconds to register 63.2% of a temperature change.

Typical heavy-duty (sheathed) probes can take several seconds to reach the exhaust’s actual temperature. Even exposed junction probes – using very fine (and fragile) wire – still have Time Constants measured in tenths of a second. In other words, thermocouples suitable for daily dynamometer testing fall far short of providing instantaneous response.

Fortunately, there is a way to compensate for this latency. When the medium- in this case exhaust gases – and their average velocity are relatively consistent, it becomes practical to extrapolate the true exhaust temperature from a thermocouple’s rate of change.

DYNO-MAX’s “Derivative” formula feature can easily resolve this Delta Temperature and then multiply it by a scaling constant* – returning the current temperature lag deviation. We add this correction value to the normal EGT reading – for a close estimate of the true instantaneous temperature.

*The “scaling constant” can be experimentally determined by recording EGT readings – while rapidly opening, holding, and then rapidly closing the throttle (under load). Graph and compare both the standard EGT #1 and the Extra Fast EGT #1formulas. Then edit the Extra Fast EGT #1 formula’s scaling constant (default is 0.800) until the Extra Fast EGT #1 response is close to instantaneous (without overshooting the steady state EGT #1 temps).

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