pH Probe vendors?

[BrokenHorn]

Just curious what pH probes people are using? I'm having trouble finding one that is 4-20ma feedback with NPT fitting and doesn't cost an arm and a leg... The few that I've found that fit that are only rated to about 170degF.

 

[ClaudiusB]

Just curious what pH probes people are using? I'm having trouble finding one that is 4-20ma feedback with NPT fitting and doesn't cost an arm and a leg... The few that I've found that fit that are only rated to about 170degF.

Take a look at:
Greisinger GPHU 014 MP 4-20 mA out, pH and temp probe are not included in the price.

http://www.conrad.com/ce/en/product/650869/Greisinger-GPHU-014-MPBNC-pH-measurement-equipment