Why is My IR Thermometer Reading Wrong? Rosin Press Temp Accuracy Guide
Posted by DABPRESS OWNER
Technical Calibration Data: Standard: Use a contact-type probe or professional digital thermometer. Soak Time: 20-30 minutes post-activation for full thermal saturation. Accuracy Variance: IR guns typically fluctuate by 5-15°F on aluminum surfaces. Verification: Cross-reference PID "PV" against a calibrated contact probe.
Thermal Truth: Why IR Guns Deliver Inaccurate Rosin Press Readings
One of the most common tech support queries involves a discrepancy between the PID controller and an Infrared (IR) thermometer gun. Understanding why IR technology often fails on reflective aluminum plates is vital for maintaining the precise 180-220°F range required for premium extraction.
01. Variables Affecting IR Accuracy
Infrared thermometers measure "apparent" temperature, which is heavily influenced by the following factors:
Factor 1: Low Emissivity. Polished aluminum platens reflect ambient infrared radiation rather than emitting their own, causing "ghost" readings on most IR guns.
Factor 2: Ambient Interference. Air currents and the room's temperature can skew a non-contact reading by 5-10 degrees.
Factor 3: Saturation Time. Measuring before the aluminum achieves a full "heat soak" (20+ mins) will result in inaccurate surface-to-core data.
02. Standard Operating Procedure for Accurate Calibration
To verify your true platen temperature, follow this professional verification process:
Step 1: Thermal Saturation. Power on your press and wait at least 20-30 minutes. The aluminum needs time to achieve uniform "soak" heat so the PV (Process Value) stabilizes at the SV (Set Value).
Step 2: Contact Measurement. Use a calibrated contact-style probe (like a digital meat thermometer). Place the probe directly between the plates and close them with light pressure.
Step 3: Compare & Adjust. If the contact probe shows a consistent difference from the PID screen, use the SC (Sensor Calibration) parameter in your controller to align the values.
Expert Success Tip: Never adjust your PID settings based on a single IR gun reading. Only make changes if a high-quality contact thermometer confirms a discrepancy. Precise heat control is the difference between golden rosin and dark, over-processed material.
03. Calibration Resources
Safety Notice: Always exercise caution when measuring heated plates. Avoid prolonged contact between probe wires and the plate edges to prevent melting the insulation.
DABPRESS ENGINEERING DEPT. | DOCUMENT ID: TEMP-ACCURACY-V2
Collection 2019
Sale 70% Off
Title for image