Page 2 - INTRINSICALLY SAFE INSTALLATION; ESSENTIAL INSTRUCTIONS; READ THIS PAGE BEFORE PROCEEDING!
DANGER HAZARDOUS AREA INSTALLATION INTRINSICALLY SAFE INSTALLATION Installations in hazardous area locations mustbe carefully evaluated by qualified on sitesafety personnel. Transmitter and Sensoralone are not Intrinsically safe. To secure andmaintain an intrinsically safe installation, acertified s...
Page 3 - TABLE OF CONTENTS; Section
i Model 1181 PB TABLE OF CONTENTS MODEL 1181 PB TWO-WIRE TRANSMITTER TABLE OF CONTENTS Section Title Page 1.0 DESCRIPTION AND SPECIFICATIONS ............................................. 1 1.1 Features and Applications .................................................................... 1 1.2 Physic...
Page 4 - LIST OF FIGURES
ii Model 1181 PB TABLE OF CONTENTS TABLE OF CONTENTS (CONT'D) LIST OF FIGURES Section Title Page 2-1 Mounting and Dimensional Drawing ..................................................... 7 2-2 Schematic System, FM Explosion Proof Approved .............................. 8 2-3 Transmitter Wiring .......
Page 5 - DESCRIPTION AND SPECIFICATIONS; when used with an approved sensor and safety barrier.; FEATURES AND APPLICATIONS
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...
Page 6 - PHYSICAL SPECIFICATIONS –
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, & ...
Page 7 - ORDERING INFORMATION
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...
Page 8 - INSTALLATION; Before opening; NOTE; NOTE
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...
Page 9 - The transmitter is equipped; The Sensor wiring terminals are
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...
Page 11 - FIGURE 2-1 Mounting and Dimensional Drawing
7 FIGURE 2-1 Mounting and Dimensional Drawing MODEL 1181 PB SECTION 2.0 INSTALLATION
Page 17 - ss
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...
Page 18 - FIGURE 2-6. Flow Chamber with Sensor Dimensions
14 MODEL 1181 PB SECTION 2.0 INSTALLATION FIGURE 2-6. Flow Chamber with Sensor Dimensions
Page 19 - . Typical Installation with Siphon Breaker
15 MODEL 1181 PB SECTION 2.0 INSTALLATION FIGURE 2-7 . Typical Installation with Siphon Breaker
Page 20 - DESCRIPTION OF CONTROLS; n n; FIGURE 3-1. Range Selector Switch and Course Span Adjust
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,...
Page 22 - FIGURE 3-3. External Zero and Span Adjust
18 MODEL 1181 PB SECTION 3.0 DESCRIPTION OF CONTROLS FIGURE 3-3. External Zero and Span Adjust
Page 24 - CONFIGURATION
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 ...
Page 25 - START UP AND CALIBRATION
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...
Page 26 - CALIBRATION FOR MEASURING PPB OXYGEN
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...
Page 27 - THEORY OF OPERATION
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...
Page 28 - DISSOLVED OXYGEN MEASUREMENT SENSOR; V a r i a b l e s t h a t
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...
Page 29 - . 2 . 6 C o m p o s i t i o n o f t h e L i q u i d M e d i u m .
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...
Page 30 - DISASSEMBLY/REASSEMBLY PROCEDURE; Disconnect the
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 (...
Page 31 - TROUBLESHOOTING/MAINTENANCE
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...
Page 33 - CAUTION
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 ...
Page 34 - WARNING
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...
Page 35 - SPARE PARTS
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...
Page 37 - RETURN OF MATERIAL; To expedite the repair and return of
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 ...
Page 38 - RETURN OF MATERIALS REQUEST
FROM: RETURN BILL TO: _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ _____________________________ CUSTOMER...
Page 39 - The shipping container should be marked:
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...
