can you please explane to me how this d/p type level transmitter works and the product in my plant is butane and water butane Sg is .573 and water is 989
The d/p transmitter works by outputting a signal that increases proportionally to the pressure increase on the HI side, when comparing the difference in pressure between the HI and LOW sides. (If configured for direct action)
If you are using bubble tubes for your primary sensing element the d/p, and therefore the signal will be greater when the average SG between the bubble tubes is greater. That is to say the interface level (water) is higher. Of course the inverse is also true, lower interface level = lower signal.
If you are using a remote seal d/p transmitter the concept is the same but the transmitter zero will be a negative value (HI side pressure lower than LOW side) because the SG of the capillary fill fluid is greater than the SG of butane.
I hope this is simple yet provides the necessary details.
Interface level DP type
Re: Interface level DP type
