below is the reply of Badger Experts, for your investigation. Also, I think you have to add in the drop list the Badger 734 pv 10 which is equivalent to Toro TSF-100.
Purdy, Ronald RPurdy@badgermeter.com
Tue 3/21, 11:06 PM
Technical Support (Techsupport1@badgermeter.com); +4 more
Unfortunately, the pictures included in your original email, were lost in cyber world.
However, reading through your email, and after a visit to the Amazon Web page, I think I understand at least part of your confusion.
While Sprinkler Warehouse correctly shows the TFS-100 as a 1” White Plastic Toro Sensor.
The Amazon page says TFS-100, but actually pictures the 1 ½” TFS-150
Actually, Badger Meter makes both of these products for Toro, and also sell them under our own brand name.
1” Model 735 and 1 ½” Model 228PV1506-1211
All four of these products have an almost identical Electrical Output, but of course the 1” sensor has a different frequency output than the 1 ½” sensors
Which is why all Four, where were included on the Rachio Compatibility list.
Since, we make the Toro TFS-100 for Toro, and they are electrically identical to our Series 735, I have no clue why Rachio removed the 735 from its list.
I was not aware they were having issues until I read your email. I have copied Rachio tech support in hopes of getting some additional details.
What is missing from your email string, is what problem(s) were you experiencing?
If I read the email string correctly, you are using the 1” Model 735.
I assume you have wired the sensor as Rachio recommends, and configured the Channel as instructed.
Both the Toro, and Badger 1” sensors require a minimum of 5 GPM to reliably report flows.
Do you have any idea what the actual flow in the pipe is thought to be?
Drip irrigation can have quite low flow rates, depending on what zones are activated.
If, following the Rachio instructions, the sensor does not appear to be working, the following may be helpful to troubleshoot further.
Assuming you are using the Rachio S1 Channel, with the sensor disconnected, measure the DC Voltage across the “S1” and “SC” Terminals.
( This will determine the Open Circuit voltage being sent the flow sensor – Typically 7VDC or greater)
With no flow, connect the flow sensor, and re-measure the voltage on the same two terminals.
( The voltage should drop slightly , perhaps a ½ to 1 Volt – If not look for bad wires, or splices)
( If the voltage drops significantly check for shorts in the wires or splices)
Establish a flow rate greater than 5 GPM.
All these sensors create pulses by briefly shorting across themselves to make pulses.
As a result, on a volt meter the voltage readings will appear unstable when there is enough flow to spin the impeller.
If the voltage is stable with no flow, and unstable when flow is greater than 5 GPM, the sensor is working.
Since these flow sensors create pulses by shorting across themselves many times a second, flow can be simulated the simply briefly and repeatedly shorting across the Rachio “S1” and “SC” terminals. This is a very brief “scratch” test not a steady short. The faster the make and break connection is made, the higher the reported flow rate will be.
I trust this is helpful.
Let me know, if you continue to have issues, or if I can assist further.