USA
Europe
Specification
pH Range: 0-14 pH
Redox Range: ± 5000 mV
Temp Range: 0 -120º C
Max Pressure/Temp: 100 psig at 90º C
Reference: Ag-AgCl
Wetted Materials: Ryton, Teflon, Glass and Viton O-rings
Standard cable length: 7 Feet
ST857 Retraction DynaProbe pH and ORP Sensors
The ST857 is a rugged, sealed, replacement sensor designed for insertion / retraction applications. The Patented solid state reference cell features the unique IonTrap™ design for extended service life in the most severe applications. The body, with an integral bulb guard and anti-blowout restraint, is moulded from chemically resistant Kynar(PVDF) and the reference junction is porous Teflon. Built-in temperature compensators are available. Sensor also available in Redox (ORP) version. Also fits TBI / Bailey Model TB557 “Hot Tap” sensor assemblies.
| Please use this information to build your part number. If you need any assistance please call us on +1-949-829-5555 or 1-800-288-2833. | ||||||||||
| Part No. | 1 | 2 | 3 | 4 | – | 5 | 6 | 7 | 8 | 9 |
| ST857 | __ | __ | __ | __ | – | __ | __ | __ | __ | __ |
1 — Liquid Junction
- [W] Recessed Coaxial Wood
- [R] Recessed Coaxial Teflon
2-3 — Measurement Electrode
- [33] pH, HT-3 Rugged Dome Bulb
- [43] pH, HT-4 High pH bulb (for pH 13 and above)
- [PB] Redox, Platinum Band
4 — Temperature Compensator: (for direct input into following manufacturer’s preamp/instrument)
- [0] T.C. not required
- [1] 3K Ohms for most older Models of TBI/Bailey, Uniloc, and other US manufacturers
- [9] 301 Ohms for older Great Lakes Models: 60, 70, 90, 570, and 690
- [D] Pt 100 Ohms for Beckman Model SoluComp, TBI/Bailey (ABB) TB82 & TB84, Uniloc 1054, Foxboro 870 & 874, Yokogawa, and most European Models
- [H] Pt 1000 Ohms for Yokogawa, Conducta, Polymetron, LTH, & many European models
5 — Cable Type:
- [A] Low Noise Coax ( < 80º C service ) – for more than 7 ft.
- [E] Jacketed Coax w/ TC leads ( < 80º C service ) – for more than 7 ft.
- [T] Teflon Coax ( > 80º service ) for more than 7 ft.
- [U] Jacketed Teflon Coax w/TC leads ( > 80º service ) for more than 7 ft.
6-7 — Cable Length:
- [07] 7 ft. is standard length
- [XX] Specify length (in feet) above 7 ft. standard length
8-9 — Required Sensor Connectors:
- [FB] BNC for pH and ferrules on all other leads (for use with Terminal Block or Terminal Strip)
- [BC] BNC for pH and Redox only (no T.C.)
- [FF] All Ferrule connectors ( for use with Terminal block or Terminal Strip)
