Originally Posted by
1jwampler
A closed solenoid has full pressure on the inbound(ingress) side and no pressure on the outbound(egress) side, an open solenoid at the exact moment of opening has no pressure or flow on the egress side, once open, depending on the egress restriction to flow, will equalize pressure with the ingress side. The only way to have no pressure (< 1 PSI as you say) in this instance is if the egress side of the TEE were in an open container that would take a substantial amount of time to equalize prior to the solenoid closing again, in which case the water level in the TEE would not rise enough to cover the conductivity probe and settle for a proper reading. The Neptune Systems conductivity probe takes several minutes to stabilize and get an accurate reading, something that would not be conducive to this effort.
Your idea could work if the OP put a TEE before the probe TEE and used a Watts P60 (or the lies) to bring pressure down to 5 PSI or less and use the other other side of the pre-TEE as a bypass, depending on how rapidly he wants to fill. If he can handle filling at 5PSI (which is what you are suggesting would be the case anyhow), then just put a P60 prior to the TEE taking out all of the risk, set the P60 to 5 or less PSI and then no solenoid needed and 100% guarantee not to burst the probe.
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A closed solenoid has full pressure on the inbound(ingress) side and no pressure on the outbound(egress) side, an open solenoid at the exact moment of opening has no pressure or flow on the egress side, once open, depending on the egress restriction to flow, will equalize pressure with the ingress side. The only way to have no pressure (< 1 PSI as you say) in this instance is if the egress side of the TEE were in an open container that would take a substantial amount of time to equalize prior to the solenoid closing again, in which case the water level in the TEE would not rise enough to cover the conductivity probe and settle for a proper reading. The Neptune Systems conductivity probe takes several minutes to stabilize and get an accurate reading, something that would not be conducive to this effort.
Your idea could work if the OP put a TEE before the probe TEE and used a Watts P60 (or the likes) to bring pressure down to 5 PSI or less and use the other other side of the pre-TEE as a bypass, depending on how rapidly he wants to fill. If he can handle filling at 5PSI (which is what you are suggesting would be the case anyhow), then just put a P60 prior to the TEE taking out all of the risk, set the P60 to 5 or less PSI and then no solenoid needed and 100% guarantee not to burst the probe.
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