Shopping for a Sensor/Solenoid

Resistance welding: we use air pressure to amplify weld gun tip force on the spot welds. The shop air compressor is shared, so pressure and volume supply can vary depending on the moment. I'm looking for a sensor/solenoid setup that can self correct the scale value/amplitude to maintain constant tip force regardless of the varying incoming air pressure.

Right now, we use an SMC bank with solenoids that are simple two way valves with a diaphragm adjustment that controls nothing... They are just open or closed, and the best I can get right now is the diaphragm adjustment at the time of configuration.

Do any of you have a recommendation? Would like 4-20ma input and output

https://www.zoro.com/smc-electro-pn...ls&gclid=CLm5tJaVl90CFVatgQodSuIGnQ&gclsrc=ds

thanks Gene

install a good volume tank close to application

+1 pressure regulator, although it only REDUCES the pressure.
If you want to ride through pressure dips, you will need
Incoming line - one way valve - accumulator - pressure regulator - to your solenoids.

KingPresident said:

https://www.zoro.com/smc-electro-pn...ls&gclid=CLm5tJaVl90CFVatgQodSuIGnQ&gclsrc=ds

thanks Gene

Click to expand...

Much better pricing for the SMC line at Allied Electronics. They show 3 of the 1500LPM on order, maybe better than the lead time from Zoro.
Automation Direct has some too in the Nitra line, but not 1500 LPM. Even better pricing, and in stock.

Perhaps a small pneumatic booster pump and storage tank at the welder.

https://www.smcusa.com/products/VBA-A-Booster-Regulator~160707