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Chatter has nothing to do with the load. You are lucky with yours. The chatter problem is widely discussed with this units. When I used the STC1000 last year my swings were over 1 degree C and my hatches were a failure. I'm pretty happy with the performance now that I have the light dimmer...

At day 6 into the test run the controller started to behave erratically and would start doing 5-8 degree C high temperature excursions. The eggs are obviously dead at this point. I was also using a WH8040 humidity controller that uses relay outputs. When the WH8040 reaches the turn-off point...

65% is fine for hatching. No worries.

I have my incubator set up in a tropical fish room. The room humidity is 70%. With no added humidity the relative humidity drops to around 35%. That being said I can go to 65% using the ultrasonic humidifier. Just back down the setting so that the mist is not visible. My hose runs up hill before...

I finally got my PT100 RTD today, hooked it up and found a new problem. When I set the number of decimal places to 1, I was limited to +/- 10 degrees C for the setpoint. I worked around this by setting the SC setting (calibration offset) to -37.5 (-99.5 degrees C) and put the setpoint to 0. I...

I solved the problem with the WH8040. I backed down on the output controls on the humidifier until I could no longer see steam. Now it cycles just fine. I bought an Avianweb Digital Mini Instant-Read Temperature & Humidity Gauge Thermometer (Hygrometer). This is pretty cheap and acurate and...

I know this is an old thread, but I am making a test run using the WH8040 to control a humidifier. It appears to have a pretty big flaw when using it to control a cool mist humidifier in an incubator. If the sensor comes in contact with the mist it becomes highly inaccurate in the low direction...