Looking for a good solution for measuring the volume of overflow from a number of good old duplex lift stations. Each station has a concrete overflow pipe, probably between 8 and 12 inches. There are a lot of ideas kicking around like using the already measured analog wet well level to know...
Hi danw2...brand wasn't really a concern. The P+F folks wanted specs on the probes. As far as I know they are about as basic as you can get. I think things will work, as you say. Thanks!!
I am replacing a 30+ year old proprietary control board on a sewage vacuum tank system. I am installing a PLC with 24v DC inputs. The system is basically a big steel tank with 5 probes (see photo) shoved in the side and insulated from the tank. I need to have a dry contact for each of 4...
Modern PLCs can be set up so specific functions can be executed independent of the main program scan so, we are good there. I have since found out that the old control card supplies a pulsing output to supply power and control signal to the valve simultaneously, so I need some thing in the...
Hi: I am looking to retrofit a machine that has a hydraulic pump, providing tension and speed on some driven wheels. There is presently an old stand-alone closed loop control board controlling the pump swivel angle by positioning the spool on a proportional valve. Feedback to the card...
Looking for interpretation of the attached drawing. Power source is 2-wire, single phase. Wondering if the pump motor is 3-phase (hence the 3 wires going to the motor) using the capacitors for start and run phase shifting, or ??
hacksaw....tried it out on another transmitter (different brand) and everything worked as expected. Having trouble getting info from the manufacturer of the "floating" units...and several identical units are doing the same thing. Calibrator was just professionally checked and calibrated. I'm...
Trying to calibrate temperature probes using our usual expensive Fluke calibrator. The sensors are 100ohm platinum RTD probes with S-products 82800 transmitter pucks. We have the software and cable from S-products to connect a PC to the transmitter, but when we "inject" various temperature...
I am replacing the control system on an industrial ammonia refrigeration system. The old system displayed a "superheat" value in degrees K. I don't have access to the code that calculated this superheat value. I have looked at the T/P charts, but I am still not sure what to calculate for...
Yes itsmoked, I think that must be what is going on. From what I can gather, it should be okay to simply connect these to an ambient sensor to power the traces when the temperature drops below a setpoint...and they regulate themselves all they want after that. VE1BLL, I think that taking the...
