Manuale d’uso / di manutenzione del prodotto 381 del fabbricante Emerson
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pH/ORP Sensor Instruction Manual PN 51-381/rev .D October 2007 Model 381.
CAUTION SENSOR/PROCESS APPLICA TION COMP A TIBILITY The wetted sensor materials may not be comp atible with process com - position and operating conditions.
MODEL 381 pH/ORP T ABLE OF CONTENTS MODEL 381 pH/ORP SENSOR T ABLE OF CONTENTS Section Title Page 1.0 DESCRIPTION AND SPECIFICA TIONS........................................................... 1 1.1 Features and Applications ..........................
MODEL 381 pH/ORP T ABLE OF CONTENTS MODEL 381 pH/ORP SENSOR LIST OF FIGURES Figure No. Title Page 1-1 Dimensional Drawing ........................................................................................ 3 1-2 Mounting Drawing .................
1 • MOLDED POL YETHERSULFONE (PES) BODY provides compatibility with a variety of processes. • MODULAR DESIGN facilitates maintenance by eliminating terminal and mounting bracket s and extraneous hardware. • INTEGRAL PREAMPLIFIER provides reliable signal transmission.
2 MODEL 381 pH/ORP SECTION 1.0 DESCRIPTION AND SPECIFICA TIONS 1.2 SENSOR SPECIFICA TIONS Materials of Construction: Body , Cover and Flow Cell: Polyethersulfone (PES). O-Rings: Viton 2. Measuring Electrode: Glass (and platinum for Model 381 ORP). Liquid Junction: Kynar 3 /wood (Code 20) or Kynar/ceramic (Code 21).
3 1.3 ORDERING INFORMA TION Model pH/ORP Sensor is housed in a PES body suit able for insertion, submer- sion or flow through installation. The sensor includes an integral preamplifier , measuring electrode, double junc- tion gel-filled reference cell, automatic temperature compensation for pH, and a choice of two cable lengths of either 15 ft.
4.
5 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION SECTION 2.0 INST ALLA TION 2.1 INST ALLA TION. Prepare the sensor for inst al lation as follows (see Figure 2-1): 1. Remove the cover from the body by grasping the body and rotating the cover 1/4 turn counter- clockwise.
6 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION FIGURE 2-1. Model 381 Sensor Component Locator Diagram.
7 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION 2.3 INSERTION INST ALLA TION (Code 00). T o install the sensor in the side of a tank, in a pipeline, or in a pipe “tee”, proceed as follows (see Figure 2-3): CAUTION Sensor must be installed within 80° of the vertical plane (see Figure 2-3).
8 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION FIGURE 2-2. Submersion Inst allation Diagram FIGURE 2-3. Insertion Inst allation Diagram.
9 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION FIGURE 2-4. Flow Through Inst allation Diagram (Code 03 or 04) FIGURE 2-5. Inst allation Details Low Flow Conditions Model 381 (Code 03 and 04).
10 FIGURE 2-6. Retro-Fit Kit Code 04 Flow Powered Cleaner , Model 381 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION PRESSURE DROP AND RECOMMENDED FLOW RA TES- FLOW POWERED CLEANER (CODE 04) kPa 240 220 2.
11 FIGURE 2-7. Flow Through Diagram and Wiring (Code 03 or 04) DWG . NO. REV . 40038105 L MODEL 381pH/ORP SECTION 2.0 INST ALLA TION WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH.
12 FIGURE 2-8. Remote Junction Box with Internal Preamp DWG . NO. REV . 40038103 J MODEL 381pH/ORP SECTION 2.0 INST ALLA TION WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH.
13 FIGURE 2-9. Wiring with W eatherproof or Div . 2 (Code 52) Junction Box DWG . NO. REV . 40038115 K DWG . NO. REV . 40038116 I MODEL 381pH/ORP SECTION 2.
14 MODEL 381pH/ORP SECTION 2.0 INST ALLA TION 2.9.2 Calibration CAUTION The solution used during the following check is an acid and should be handled with care. Follow the directions of the acid manufactur- er . Wear the proper protective equipment. Do not let the solution come in contact with skin or clothing.
15 MODEL 381pH/ORP SECTION 3.0 MAINTENANCE SECTION 3.0 MAINTENANCE 3.1 GENERAL. This section provides instructions for performing periodic maintenance and for determining the cause of a malfunction (troubleshooting). 3.2 PERIODIC MAINTENANCE. The following period- ic maintenance is based on operation in a water sam- ple.
16 MODEL 381pH/ORP SECTION 3.0 MAINTENANCE 3.3 MODEL 381 3.3.1 Platinum Electrode Check. The platinum elec- trode may be checked as follows: There are two types of standard solutions which may be used to check the ORP electrode/transmitter system. T ype 1: One type of commonly used ORP st andard solution is the saturated quinhydrone solution.
17 T rouble Probable Cause Remedy Meter reads off scale. Reference electrolyte depleted. Replace reference electrolyte as instructed in Section 3.2.2. Defective preamplifier . Check preamplifier as instructed in Section 3.4 and replace preamplifier if defective.
18 3.4 PREAMPLIFIER TROUBLESHOOTING . T o deter- mine if the preamplifier is operable, proceed as follows: 1. Remove the sensor from process. 2. Remove the cover from the body by grasping the body and rotating the cover 1/4 turn in the count- er-clockwise direction.
19 RECOMMENDED P ART NUMBER DESCRIPTION CODE QUANTITY 2000734 Liquid junction wood/Kynar 20 2 2000735 Liquid junction ceramic/Kynar 21 2 2001928 O-ring lubricant ALL 2 22692-00 Body , Uniloc standard T .C. 30 22692-03 Body , Pt100 T .C. 31 22692-06 Body w/o T .
20.
21 MODEL 381pH/ORP SECTION 4.0 UL TRASONIC CLEANER SECTION 4.0 UL TRASONIC CLEANER 4.1 UL TRASONIC CLEANER (P/N 22727-00). This accessory provides an ultrasonic cleaner and mount- ing hardware for either continuous or inter-mittent cleaning of the measuring electrode and liquid junction on the Model 381.
22 4.4 Operation (continued) NOTE When the ultrasonic cleaner is used on some slurry applications (such as car- bon- ates and phosphates), continuous ultra- sonic cleaning is not recommended as this may tend to compact the solids of the slur- ry on the electrode into a hard, cement like coating.
23 FIGURE 4-1. Model 381 Ultrasonic Cleaner and Wiring DWG . NO. REV . 40038156 F MODEL 381pH/ORP SECTION 4.0 UL TRASONIC CLEANER WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH.
24 FIGURE 4-2. Dimensional and Component Locator Ultrasonic Generator MODEL 381pH/ORP SECTION 4.0 UL TRASONIC CLEANER WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH DWG .
25 MODEL 381 SECTION 5.0 RETURN OF MA TERIAL SECTION 5.0 RETURN OF MA TERIAL 5.1 GENERAL. T o expedite the repair and return of instruments, proper communication between the cus- tomer and the factory is important. The “Return of Materials Request” form is provided for you to copy and use in case the situation arises.
FROM: RETURN BILL T O: _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ ___________________________.
W ARRANTY Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defect s in workman- ship and material under normal use and service for a period of twelve (12) months from the date of shipment by Seller . Consumables, pH electrodes, membranes, liquid junctions, electrolyte, O-rings, etc.
Credit Cards for U.S. Purchases Only . The right people, the right answers, right now . ON-LINE ORDERING NOW A V AILABLE ON OUR WEB SITE http://www .raihome.com Specifications subject to change without notice. Emerson Process Management Liquid Division 2400 Barranca Parkway Irvine, CA 92606 USA T el: (949) 757-8500 Fax: (949) 474-7250 http://www .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Emerson 381 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Emerson 381 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Emerson 381 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Emerson 381 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Emerson 381, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Emerson 381.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Emerson 381. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Emerson 381 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
