10/16/2024 8:38 AM | |
Joined: 8/16/2024 Last visit: 10/17/2024 Posts: 2 Rating: (0) |
Hi all, I have written a program to monitor temperature and humidity. (Please see Zip file attached) I am using Titan TP-RS-RHT-MA-10K3 (4-20mA sensors) & Titan TPOS/50 (4-20mA sensors) When temperature/humidity set points are reached then digital outputs(relays) keeps flickering on/off before it settles every time. I was thinking if I need to add some hysteresis if so how do I do that. Really appreciate for any help! Thank you AttachmentProgram.zip (2 Downloads) |
10/16/2024 8:51 AM | |
Joined: 12/18/2014 Last visit: 10/20/2024 Posts: 34000 Rating: (4229)
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Insert after the last analog amplifier a analog filter block or a average value block. |
10/17/2024 2:12 PM | |
Joined: 8/16/2024 Last visit: 10/17/2024 Posts: 2 Rating: (0) |
Hi, Thank you for coming back to me. I have allowed for analogue filter after last amplifier as you suggested so it stops output to change as quickly as before. Also, please could you check if I have scaled my sensors correctly as the measured values doesn't seem to be accurate. 1st temperature sensor with 4-20mA output for temperature -50 to +70 degree. 2nd humidity and temperature sensor with 4-20mA output for temperature 0 to +50 degree and for humidity 0 to 100%RH Simplified file is attached. Thank you in advance! AttachmentCircuit.zip (1 Downloads) |
10/17/2024 2:31 PM | |
Joined: 12/18/2014 Last visit: 10/20/2024 Posts: 34000 Rating: (4229)
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See attachment. I set the parameter for one decimal place in the display. AttachmentTemp_Humidity.zip (1 Downloads) |
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