Gebruiksaanwijzing /service van het product 6120118 van de fabrikant Hach
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Catalog Number 6120118 Digital PC sc and RC sc ¾-inch Combination pH/ORP Sensor USER MANU AL October 2005, Edition 4 ©Hach Compan y , 2004–2005. All rights reserved.
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3 T able of Contents Section 1 Specific at io n s ................ ................ ................ ................. ................ ................ ................ .............. .......... 5 Section 2 General I nformation ................ .....
4 T able of Contents 7.3 T roubleshootin g the pH or O RP Sensor ..... ................ ................ ................ ................ ................. . ........... .......... 35 Section 8 Replaceme nt Parts and Accessories ..... ...............
5 Section 1 Specifications Specifications are subj ect to change without notice . T able 1 Combination pH and ORP Sensor Specifications Components Corros ion-resistant mater ials, fully-immers ib le probe with 4.
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7 Section 2 General Inf ormation 2.1 Safety Inf ormation Please read this entire man ual bef ore unpac king, setting up , or operatin g this equipment. P a y attentio n to all danger an d caution state ments . F ailure to do so could result in serious injury to the operator or dama ge to the equipment.
8 General Information 2.2 General Sensor Inf ormation Optional equipment , such as mounting hardw are f or the probe , is supplied with instructions for all user insta llati on tasks . Se v er al mountin g options ar e a v ailable, allo wing the probe to be ada pted for use in many diff erent applications .
9 General Inf ormation Figure 3 Insertion Style Sensor with Domed Electr ode Figure 4 Sanitary- style Sensor 2.3 The Digital Gatewa y The digital ga tew ay was de v eloped to pro vide a means to us e e xisting analog sensors wit h the ne w digital controller s.
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11 Section 3 Installation DA N G E R Only qualifie d personnel should conduct the task s described in this section of the manual. DA N G E R Seul un technicien qualif ié peut effectuer les tâches d'inst allation décrite s dans cette sectio n du manuel.
12 Installation Figure 5 Pr oper Wire Preparation a nd Inser tion Figure 6 Wiring and Assembli ng the Digital Gatewa y 1. Strip ¼-inch of insulation. 2. Seat insulation against connector with no bare wire exposed. 1. Digital gatew ay front 7. Cord grip 2.
13 Installation 3.2 Connecting/Wiring the Digita l Gate way to the sc100 Contr oller DA N G E R The sc100 and certain ver sions of the sensor are sui table for us e in Class 1, Division 2, Gr oups A, B, C, D Hazar dous Locations . See Contro l Drawing 58600-78 in the sc100 Contr oller Man ual, Cat.
14 Installation Figure 7 Attaching the Digita l Gatewa y using t he Quick-con nect Fittings 3.2.1.2 Hard-wiring the Digi tal Gatewa y to the sc100 Important Note: Hard-wir ing the digit al gatewa y t o the sc100 is not an appr ov ed method f or Class 1, Division 2 Hazardous Locations.
15 Installation Figure 8 Hard- wiring the Digital Gatewa y 3.2.2 Connecting the Di gital Gate way to a sc100 Cont r oller in a Hazardous Location DA N G E R The sc100 and certain ver sions of the sensor are sui table for us e in Class 1, Division 2, Gr oups A, B, C, D Hazar dous Locations .
16 Installation 3.2.2.1 Attaching the Di gital Gateway with a Quick-Connect Fitting in a Hazar dous Location The digital gate wa y is supplied with a k ey ed quick -connect fitting f or easy attach ment to the controller , see Figure 7 on page 14 . F or Hazardous Locations , a connect or saf ety loc k (Cat.
17 Installation 3.4 Mounting the Digital Gatewa y The digital gate wa y is supplied with a mounting clip f or mounting to a wall or other fl at surf ace. See Figure 10 f or dimensions. Use an appr opriate fastener to secure it to the wall, see Figure 11 .
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19 Section 4 User Interface and Na vigation 4.1 Using the sc100 Contr oller The front of the con troller is shown in Figure 12 . The ke ypad consists of the eight k eys descr i be d in Table 5 . Figure 12 Front of the Controller 1. Instrument displa y 5.
20 User Interface and Navigation 4.1.1 Contr oller Display Features When a se nsor is conn ected and the controller is in measurem ent mode, the controlle r automatically identif ies th e connected sensors and displa ys associated measurements.
21 User Interface and Navigation 4.2 Using the sc1000 Contr oller The sc1000 is a touch screen applicat ion. Use your finger to touch ke ys and menu commands . In nor mal operation the touch screen displa ys the measured v alues for the sensors selected.
22 User Interface and Navigation Figure 15 Main Menu 4.2.1.3 Navigating th e Menu Windows T o view a me nu item, touc h the menu ite m or use the UP and DO WN keys to highlight the item. The menu item remains highlighted f or ap proximately 4 secon ds af ter it is selected.
23 User Interface and Navigation Figure 16 Changing a Menu Item Figure 17 K eypad 1. Displa y Area 5. HOME –changes to the display of measured v alues. 2. BACK 6. UP –scrolls up 3. FOR W ARD 7. DOWN –scrolls down 4. ENTER –confir m s th e entr y or se lection.
24 User Interface and Navigation Figure 18 List Bo x Figure 19 Message window 1. Scrolls up or down 2. CANCEL –cancels a nd entry . 3. ENTER –confirms a sel ection. 1. Scrolls up or down. 2. Displays the messages or w ar nings. 3. Displays details on the selected entr y .
25 Section 5 Operation 5.1 Sensor Setup When a sensor is initially installed, the ser ial number of the Digital Gatewa y will be displa yed as the sensor name. T o change the sensor name r ef er to the f ollowing instru ctions: 1. Select Main Menu. 2.
26 Operation CONFIGURE (continued) REJECT FREQ Choose 50 or 60 Hz depending on the power line fre quency f or optimal noise rejection. Default is 60 Hz. FIL TER Select 0–60 second signal averaging time. TEMP ELEMENT Select type of temperatur e element from the displayed choices .
27 Operation 5.5 ORP Sensor Setup Men u SELECT SENSOR (if more than one sensor is attached) CALIBRA TE (Main Menu Item) 1 POINT MANUAL Cal ibration against a single known sample. TEMP ADJUST Adjust the display ed temperature by up to ± 15 °C . DEF A U L T SETUP Restores the system to the original fa ctor y calibration.
28 Operation 5.6 pH Calibration The manuf acturer off ers one and two point autom atic and manual calibrat ions f or pH. An automatic calibr ation identifies the b uff er table corr espo nding to the chosen bu ffer and automatically calibrates the probe after it stabilizes .
29 Operation 5.6.3 One P oint Manual Calibration 1. F rom the Main Menu, select SENSOR SETUP and confirm. 2. Select the appropriate sensor if more than one is attached and confirm. 3. Select CALIBRA TE and confirm. 4. Select 1 POINT MANU AL. Select the av ailabl e Output Mode (Active , Hold, or T ransfer) from the list bo x and confir m.
30 Operation 5.7 ORP Calibration 5.7.1 One-point Man ual Calibration The manufacturer off ers a one po in t ma nual calibration for ORP . The v alue of the sample used in the manual calibr ation may be d eter mined by labor ator y analysis or comparison reading.
31 Operation 5.9 Adjusting the T emperature View or ch ange the temperature using t he steps below: 1. F rom the Main Menu, select SENSOR SETUP and confirm. 2. Select the appropriate sensor if more than one is attached and confirm. 3. Select CALIBRA TE and confirm.
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33 Section 6 Maintenance DA N G E R Only qualifie d personnel should conduct the task s described in this section of the manual. DA N G E R Seul un technicien qualif ié peut effectuer les tâches d'inst allation décrite s dans cette sectio n du manuel.
34 Maintenance 6.2 Cleaning the Sensor CA UTION Bef ore cleaning with acid, determine if the c hemical reacti on between the aci d and the sample will c r eate a hazard ous chemical reacti on .
35 Section 7 T roub leshooting 7.1 Err or Codes When a sensor is e xper iencing an error condition, the sensor reading on the measurement screen will flash and all rela ys and anal og outputs associated with this sensor will be held.
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37 Section 8 Replacement P ar ts and Accessories 8.1 Replacement Items, Accessori es, and Reagent and Stan dar ds Item Description QTY Catalog Number Instruction manual, Combination pH System, English each 6120118 Cable , sensor extension, 1 m (3 ft) each 6122400 Cable , sensor extension, 7.
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39 Section 9 Ho w to Order U .S.A. Customers By T elephone: 6:30 a.m. to 5:00 p.m . MST Monday throu gh Friday (800) 227-HACH (80 0-227-4224) By Fax: (970) 669-2932 By Mail: Hach Company P.O. Box 389 Loveland, Colorado 80539-0389 U.S.A. Ordering inf ormation by e-mail: orders@hach.
40 Section 10 Repair Service A uthorization m ust be obtained fr om Hach Compan y before sending any items f or repair . Please contact the Ha ch Service Center serving y our location. In the Uni ted States: Hach Company Ames Service 100 Dayton Avenue Ames, Iowa 50010 (800) 227-422 4 (U.
41 Section 11 Limited W arranty Hach Company w arrants its products to the original purchaser against an y def ects that are due to f aulty material or workmanship for a per iod of one yea r from date of shipment unless otherwise noted in the product man ual.
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43 Section 12 Compliance Inf ormation Hach Company certifies this instrument was tested thoroug hly , inspected and f ound to meet its pub lished specifications when it w as shipped from the f actory .
44 Compliance Inf ormation Canadian Interference-causing Equi pment Regulation, IECS-003, Class A Suppor ting test records by Hewlett P ackard, F o rt Collins, Colorado Hardware T est Center (A2LA # 0905- 01) an d ce r tified compliance by Hach Company .
45 Appendix A Modbus Register Inf ormation T able 8 Sensor Modbu s Registers Group Name T ag Name Register # Data Ty p e Length R/W Description T ags SensorMeasT ag 40001 Integer 1 R Se nsor measureme.
46 Modbus Register Inf ormation Configuration CalW ar ningDays 40076 Integer 1 R/W Calibration war ning days Configuration SensorW ar ningDays 40077 Integer 1 R/W Sensor war ning days T able 8 Sensor .
47 Appendix B General pH Information B.1 pH Measurement Theory pH is the negativ e logarithm of the h ydrogen ion activity and a me asure of the acidity or alkalinity of a solution. pH = –log A[H+] pH is nor mally m easured u sing a glas s electrode and a ref erence electrode .
48 General pH Information B.2 PID Contr oller Basics A pH control loop oper ates as fo llows: The pH meter measure s the value of th e pH in the effluent, and, if the pH is differ ent from the setpoint, the contro ller actuates the reagent pump (or v alve) that adds reagent to a mixing t ank.
49 General pH Inf ormation Integral The integr al v alue is used to re duce the steady stat e error , between the pro cess v alue and the setpoin t, to zero . F or example, assume a proces s can be manually controlled a t a lev el of pH 8.0 b y sending a 35% control output le vel to a reagent pu mp .
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51 Inde x B Buttons List box ........................ ................ ................. ..... 23 Toolbar ..................... ................ ................ ......... 21 C Cleaning Sensor ................... ................ ................ ....
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