Emerson PB Series- Manuals

1 MODEL 1181 PB SECTION 1.0 GENERAL DESCRIPTION AND SPECIFICATIONS SECTION 1.0 DESCRIPTION AND SPECIFICATIONS • TWO-WIRE FIELD MOUNTED TRANSMITTERS. Ideal for multiple loop installations where central data processing and control are required. Field mounting near the sensor for ease inroutine calibra...

2 MODEL 1181 PB SECTION 1.0 DESCRIPTION AN SPECIFICATIONS 1.2 PHYSICAL SPECIFICATIONS – GENERAL Enclosure: NEMA 4X, weatherproof and corrosion- resistant, NEMA 7B, explosion proof Hazardous Area Classification - Explosion Proof: FM: Class I, Groups B, C, & D, Div. 1 Class II, Groups E, F, & ...

3 MODEL 1181 PB SECTION 1.0 DESCRIPTION AN SPECIFICATIONS The Model 1181PB Transmitter measures dissolved oxygen in parts per billion. Switch selectable ranges are 0-50, 0-100, and 0-200 ppb with air calibrate. RECOMMENDED SENSORS: Rosemount Analytical, La Habra, CA : Model 120012 (P/N 639900) Recha...

4 MODEL 1181 PB SECTION 2.0 INSTALLATION SECTION 2.0 INSTALLATION 2.1 UNPACKING AND INSPECTION. Before opening the shipping carton, inspect the outside of the cartonfor any damage. If damage is detected, contact thecarrier immediately. If there is no apparent damage,o p e n t h e c a r t o n a n d i...

5 MODEL 1181 PB SECTION 2.0 INSTALLATION 2.4 WIRING-GENERAL. The transmitter is equipped with two (2) ¼ -inch conduit openings, one on each side of the housing. One is for the power supply/signalwiring and the other is for the sensor wiring.The use of waterproof cable glands or conduit isrecommended...

7 FIGURE 2-1 Mounting and Dimensional Drawing MODEL 1181 PB SECTION 2.0 INSTALLATION

13 MODEL 1181 PB SECTION 2.0 INSTALLATION FIGURE 2-5. Schematic System, CSA I.S. Approved-Loop DWG. NO. REV. 1400157 B ss 3 APPROVED FOR CLASS 1, DIVISION 1, GROUPS A, B, C, D WHEN NOT USED IN CIRCUIT WITH TWO CSA CERTIFIED SINGLE CHANNEL SAFETY BARRIERS (OF LIKE POLARITY) ONE WITH APPROVED SAFETY P...

14 MODEL 1181 PB SECTION 2.0 INSTALLATION FIGURE 2-6. Flow Chamber with Sensor Dimensions

15 MODEL 1181 PB SECTION 2.0 INSTALLATION FIGURE 2-7 . Typical Installation with Siphon Breaker

16 MODEL 1181 PB SECTION 3.0 DESCRIPTION OF CONTROLS SECTION 3.0 DESCRIPTION OF CONTROLS 3.1 DESCRIPTION OF CONTROLS. 3.1.1 Range Selector Switch. A set of five (5) dip switches used for selecting the 1181PB measurementranges (0-50, 0-100, 0-200PB). The Air Calibrateposition is used during Start Up,...

18 MODEL 1181 PB SECTION 3.0 DESCRIPTION OF CONTROLS FIGURE 3-3. External Zero and Span Adjust

20 MODEL 1181 PB SECTION 4.0 CONFIGURATION SECTION 4.0 CONFIGURATION 4.1 GENERAL The Model 1181PB is factory calibrated to measure 0-200 ppb dissolved oxygen correspondingto a 4-20 mA. The optional LCD display is calibrated to0-100% corresponding to 4-20 mA. NOTE D o n o t a t t e m p t t o a d j u ...

21 MODEL 1181PB SECTION 5.0 START UP, AND CALIBRATION SECTION 5.0 START UP AND CALIBRATION 5.1 GENERAL. This section provides the start-up and calibration procedure for the Model 1181PB two-wiretransmitter. The Transmitter is used in conjunctionwith the PB sensor assembly. 5.2 TRANSMITTER ZERO. This...

22 MODEL 1181PB SECTION 5.0 START UP, AND CALIBRATION 5.3.2 Air Calibration Adjustment for Transmitterswith LCD Digital Display (Code 06). 1. Adjust the COURSE SPAN ADJUST POT (seeF i g u r e 5 - 1 ) t o o b t a i n a t r a n s m i t t e r o u t p u tcalculated from the local barometric pressure asf...

23 MODEL 1181 PB SECTION 6.0 THEORY OF OPERATION SECTION 6.0 THEORY OF OPERATION 6.1 MODEL 1181PB. The Model 1181PB Two-Wire Transmitter automatically and continuously measures low-level concentrations of dissolved oxygen in water or aqueous solutions. The determination is based on the measurement o...

24 MODEL 1181 PB SECTION 6.0 THEORY OF OPERATION 6.2 DISSOLVED OXYGEN MEASUREMENT SENSOR R o s e m o u n t A n a l y t i c a l u t i l i z e s t h e a m p e r o m e t r i cm e m b r a n e t e c h n i q u e f o r t h e m e a s u r e m e n t a n dc o n t r o l o f d i s s o l v e d o x y g e n . T h e...

25 MODEL 1181 PB SECTION 6.0 THEORY OF OPERATION Since dry air contains 20.95 oxygen by volume,regardless of the barometric pressure, the partialpressure of oxygen can be shown to be directlyp r o p o r t i o n a l t o t h e t o t a l b a r o m e t r i c p r e s s u r e ,according to Dalton’s law of...

26 MODEL 1181PB SECTION 7.0 DISASSEMBLY/ASSEMBLY PROCEDURE SECTION 7.0 DISASSEMBLY/REASSEMBLY PROCEDURE 7.1 DISASSEMBLY PROCEDURE. Disconnect the power to the transmitter prior to disassembly. (seeFigure 9-1 for item numbers also see Figure 3-3). 1. Remove covers (1) and (14) or meter housingcover (...

27 SYMPTOM PROBLEM ACTION 1. Abnormally high O 2 a. Hole in membrane Replace membrane readings (inability to calibrate) b. Gold cathode loose Replace sensor c. Open thermistor Replace sensor 2. Abnormally low O 2 readings a. High internal cell resistance Rejuvenate and recharge cell (inability to ca...

29 MODEL 1181 PB SECTION 8.0 TROUBLESHOOTING/MAINTENANCE 4. The membrane assembly consists of a Teflon membrane and three associated parts: a holder, a retainer, and an O-ring. Remove the retainer from the holder by placing a finger into center hole of holder and pressing the fingernail against the ...

30 MODEL 1181 PB SECTION 8.0 TROUBLESHOOTING/MAINTENANCE 8.3.2 Rejuvenating The Gold Cathode. Typically, the gold cathode is rejuvenated during the rechargingprocedure described in Section 8.3.1. In the event thatsimple recharging does not correct symptoms of lowoutput on the readout meter, clean an...

31 MODEL 1181 PB SECTION 9.0 SPARE PARTS SECTION 9.0 SPARE PARTS Item No. Part Number Description Qty. 1 3002425 Cover (for Blind Model) 2 1 3002425 Cover (for Meter Model) 1 2 2002604 O-ring Kit 1 Consists of:99550136 O-ring 12 3 2002528 Housing 1 3A 23563-00 Housing for code -79 1 4 2002598 Adjust...

33 MODEL 1181PB SECTION 10.0 RETURN OF MATERIAL SECTION 10.0 RETURN OF MATERIAL 10.1 GENERAL. To expedite the repair and return of instruments, proper communication between thecustomer and the factory is important. The “Return ofMaterials Request” form is provided for you to copyand use in case the ...

FROM: RETURN BILL TO: _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ CUSTOMER...

WARRANTY Seller warrants that the firmware will execute the programming instructions provided by Seller, and that the Goods manufacturedor Services provided by Seller will be free from defects in materials or workmanship under normal use and care until the expira-tion of the applicable warranty peri...