ST873 Submersion & In-Line DynaProbe pH and Redox Sensors

The ST873 is a rugged, sealed sensor assembly designed for in-line or submersion 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 1″ MNPT insertion thread, is moulded from chemically resistant Ryton (PPS) and the reference junction is either porous Teflon or wood. Built-in temperature compensators are available. Optional sensor guard threads onto the front of the sensor and protects the sensor tip from impact. Sensor also available in ORP (Redox) version.

Specification

pH Range: 0-14 pH

ORP Range: ± 5000 mV

Temp Range: 0 -140º C

Max Pressure/Temp: 150 psig at 120º C

Reference: Ag-AgCl

Wetted Materials: Ryton, Teflon or Wood, & Glass

Standard cable length: 7 Feet

Please use this information to build your part number. If you need any assistance please call us on +44 (0) 1525 862 518.
Part No.	1	2	3	4	–	5	6	7	8	9
ST-873	__	__	__	__	–	__	__	__	__	__

1 — Liquid Junction

[W] Coaxial Wood
[T] Coaxial Teflon
[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)
[17] pH, GP Flat Bulb (available only with style “T” Teflon Junction ) (100°C Max. Temp.)
[PB] ORP, 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 – for more than 7 ft.
[E] Jacketed Coax w/ TC leads – 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:

[BC] BNC only (for use with ORP electrodes or with sensors w/o TC or solution ground)
[FB] BNC for pH and ferrules on all other leads (for use with Terminal Block or Terminal Strip)
[FF] All Ferrule connectors ( for use with Terminal block or Terminal Strip)

ST873 Submersion & In-Line DynaProbe pH and Redox Sensors

Ordering Information