Models PH87 & PH97 General Retractable pH Assemblies Specifications and Electrodes GS 12B6K9-01E-A The Model PH97 electrodes are designed to be durable and rugged for use with the PH87 assemblies. Each PH97 holds four separate elements in a rugged Ryton™ body which includes a pH bulb guard and an anti-blowout restraint. A metal impregnated Ryton solution ground, a double-junction reference, universal pH glass (0-14 pH) and a PT1000 temperature element compose this pH system. In many applications the large volume reference reservoir will provide an extended functional life. Optional ORP (± 5000 mV) or patented solid state reference electrodes with a unique ionic trapping system are available for specialized applications. RETRACTION/INSERTION ASSEMBLIES The Model PH87 assemblies are constructed of chemically-resistant titanium sheathes and are used with Model PH97 sensors. The retractable assembly is suitable for “Hot-Tap” service and is removable from a pressurized process line or vessel without interrupting the flow or draining the tank. The insertion assembly is suitable for service in a process line or tank where variable insertion lenghts are required. Blowout protection is provided by the flared tip design of the titanium sheath which provides a metal to metal stop during retraction. Integral junction boxes are provided for simple installation and wiring. APPLICATIONS • Pulp and paper stock • Slurries • Process Tanks FEATURES–ELECTRODE FEATURES–RETRACTABLE • Each electrode is 100% factory tested • Suitable for “Hot-Tap” applications with • Cost effective, long life ball valve • Integral anti-blowout guard • Integral Junction box for simple installation • Built-in solution ground • Titanium sheath for chemical protection • Coaxial porous PTFE reference junction • Adjustable insertion lengths • Optional electrodes SYSTEM CONFIGURATION Yokogawa Corporation of America GS 12B6K9-01E-A 2 Dart Road Newnan, Georgia U.S.A. 30265 ©Copyright Jan. 1, 1999 Tel: 1-800-258-2552 Fax: 1-770-254-0928 1st Edition 1/1/99 5M 2 Model PH87/B Valve Retraction Sensor Assembly with ball valve SPECIFICATIONS pH range: 0-14pH Wetted materials Probe Sheath: Titanium ORP range: -5000 mV to 5000 mV Compression fitting: 316SS or (requires/ORP option which replaces pH bulb) Titanium (optional) Body and sensor guard: Ryton (PPS) Temperature range: 0-221°F (0-105°C) O-Rings: Viton Liquid junction: Porous PTFE Maximum pressure: 100 psig @ 212°F (100°C) Dome pH bulb: Glass Platinum (/ORP option) Maximum flow: 10 feet per second (3 meters per second) Standard cable length PH97-07 24” (terminated in J-box) Reference electrode: Ag-Ag/CI PH97-21 36” (terminated in J-box) ORDERING THE ASSEMBLY The assembly and the pH sensor are ordered separately. Order from the part number and descriptions listed below. Model Code Description PH87 Retractable pH assembly with titanium sheath and cable connection junction box Insertion Length -07 7 inch insertion length -21 21 inch insertion length Mounting Options /B 1 1/4 inch 316 SS ball valve Accessory M1234DY: Titanium compression fitting body (wetted part only) ORDERING THE PH SENSOR The pH sensor and the assembly are ordered separately. Order from the part number and the descriptions listed below. Model Code Description PH97 Universal pH electrode, with solution ground, 0-14 pH glass, PTFE reference junction, and Pt. 1000 temperature element Cable Length -07 24 inch cable length (for PH87-07 assembly) -21 36 inch cable length (for PH87-21 assembly) Measurement Options /ORP ORP measurement (glass bulb is replaced with platinum ORP sensor) *For–Solid State Reference for pulp and paper applications, contact the factory. All Rights Reserved. Copyright © 2000, Yokogawa Corporation of America GS 12B6K9-01E-A 3 MODEL PH97 PH SENSOR WITH SOLUTION GROUND MODEL PH87-07/B All Rights Reserved. Copyright © 2000, Yokogawa Corporation of America GS 12B6K9-01E-A 4 YOKOGAWA ELECTRIC CORPORATION Represented by: World Headquarters 9-32, Nakacho 2 chome, Musashino-shi Tokyo, 180-8750 JAPAN Tel: 81-422-52-5555 Fax: 81-422-55-0461 www.yokogawa.co.jp YOKOGAWA CORPORATION OF AMERICA 2 Dart Road, Newnan, GA 30265-1040 USA Tel: 770-254-0400 Fax: 770-254-0928 www.yca.com YOKOGAWA EUROPE B.V. P.O. Box 163, 3800 AD Amersfoort, Vanadiumweg 11, 3812 PX Amersfoort The Netherlands Tel: 31-33-4641611 Fax: 31-33-4631202 www.yokogawa-europe.com YOKOGAWA ELECTRIC ASIA PTE. LTD. Bedok Factory 5 Bedok South Road, Singapore 469270 Tel: 65-241-9933 Fax: 65-241-2606 www.yokogawa.com.sg All Rights Reserved. Copyright © 2000, Yokogawa Corporation of America GS 12B6K9-01E-A