Model SA857 — DynaProbe Sensor Housing for Valve Retraction Applications

Model SA857 — DynaProbe Sensor Housing for Valve Retraction Applications

Specifications
Ordering Information

The Model SA857 is a sensor housing assembly designed for use with the replaceable Model ST857 DynaProbe® sensors. This time-proven sensor housing is suited for the most severe process industry applications and is intended for valve retraction service. The Coupler is constructed from chemically resistant Kynar (PVDF). 316 SS is the standard material of construction for all other parts of this assembly. An optional Titanium version is available.

An assortment of insertion lengths are available from 2 inches to 27 inches. Viton O-ring seals are incorporated throughout this housing to prevent damage to the sensor and to retard process seepage during insertion and retraction procedures. The sheath is designed with blow-out protection, should the compression fitting be loosened at the process operating pressure. The SA857 sensor housing is designed with replaceable components providing simple and economic servicing. A completely illustrated instruction manual is supplied with each Model SA857.

SPECIFICATIONS
pH Range	0-14 pH (w/DynaProbe)
ORP Range	± 5000 mV (w/DynaProbe)
Temp Range	0º to +120º C
Max Pressure/Temp	100 psig at 90º C
Wetted Materials	316 SS, Kynar (PVDF), and Viton O-Rings, with an optional Titanium Sheath version available

ST857 DynaProbes must be ordered separately

Specify Model SA857 Part Number here:
	1	2	3	4	—	5	6	7
SA857—

Category Selection:

1 — 4 Sheath Material and Insertion Length:

[6L07] 316 SS, 7 inches = standard length
[6L11] 316 SS, 11 inches
[6L15] 316 SS, 15 inches
[6L21] 316 SS, 21 inches

[TL07] Titanium, 7 inches
[TL11] Titanium, 11 inches
[TL15] Titanium, 15 inches
[TL21] Titanium, 21 inches
[TL27] Titanium, 27 inches

5 — 7 Junction Box:

[J01] Optional junction box sub-assembly
[J99] Junction box not required = standard design

DynaProbe® pH and ORP Sensors
Must be Ordered Separately

Select the DynaProbe® sensor for pH or ORP (Redox) measurement which is compatible with the host pH/ORP Instrument. A wide selection of DynaProbe® sensors both with and without automatic temperature compensation are available for most makes and models of pH/ORP instruments. Refer to the ST857 DynaProbe® Data Sheet for detailed ordering information or call 1 (800) 288-2833 and ask for Tech Services to get factory assistance

Preamplifiers are also Available!
Ordered Separately

Select the optional preamplifier module to provide the correct interface signal between the DynaProbe® sensor in the Model SA857 housing and the host pH Instrument. A wide selection of preamplifier modules both with and without junction boxes are available for most makes and models of pH instruments. Refer to the PS100 Series Data Sheet for detailed ordering information or call 1 (800) 288-2833 and ask for Tech Services to get factory assistance