Emerson Rosemount 1181ORP TRANSMITTER Instruction Manual Download Page 10

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MODEL 1181 pH/ORP

SECTION 1.0

INTRODUCTION

MODEL

1181

TWO-WIRE TRANSMITTER

CODE INPUT (Required Selection)

pH measurement in an aqueous solution

ORP

Oxidation Reduction Potential

CODE DISPLAY (Required Selection)

Analog display

Blind, without indication

Analog display

Digital display

CODE OPTIONS

Two-inch pipe/wall mounting bracket

Stainless steel nameplate (specify marking)

CODE AGENCY APPROVALS

FM Explosion proof and Intrinsically Safe

CSA Explosion proof and Intrinsically Safe

CENELEC Intrinsically Safe/CE (not available with Code 01)

1181

07-11

EXAMPLE

1.6 ORDERING INFORMATION

Model 1181 Two Wire Transmitter

is housed in a NEMA 7B explosion-proof, 4X weatherproof, corrosion-resistant enclosure and includes all

the circuitry necessary for measurement and transmission of an isolated 4-20 mA signal. The transmitter may be selected with or without an
analog or digital display.

Summary of Contents for Rosemount 1181ORP TRANSMITTER

Page 1: ...Model 1181 pH ORP Combination pH ORP Two Wire Transmitters Instruction Manual PN 51 1181pH rev B March 2003 ...

Page 2: ...f life personal injury property damage damage to this instru ment and warranty invalidation Read all instructions prior to installing operating and servicing the product If this Instruction Manual is not the correct manual tele phone 1 800 654 7768 and the requested manual will be provided Save this Instruction Manual for future reference If you do not understand any of the instructions contact yo...

Page 3: ...y drawing Figure 2 5 through 2 12 The 1181pH two wire transmitter is factory configured to work right out of the box for many applications Factory Settings 0 14pH measurement range 0pH low range cor responds to 4mA output 14pH high range corre sponds to 20mA output Automatic temperature compensation is utilized Optional LCD is set for 0 100 read out If these settings are acceptable to your process...

Page 4: ...range value Typical buffer solution values 4pH 7 pH 10 pH 2 Place the sensor in the lower range buffer solu tion allow the reading to stabilize 3 a adjust ZERO control under the serial label until the DVM reads the current output value that corresponds to the buffer value Buffer value Low pH range mA ___________________________ x 16 mA 4 mA High pH range Low pH range Example For 4 pH buffer soluti...

Page 5: ...of Installations 7 2 5 Hazardous Locations lntrinsically Safe Installations 7 3 0 START UP AND CALIBRATION 18 3 1 Start Up 18 3 2 ModeI 1181 ORP pH Start Up 18 3 3 System Calibration 21 3 4 Operation With A Fixed T C 22 3 5 ModeI 1181 pH Start Up 22 3 6 Model 1181ORP System Calibration 24 3 7 Operating With Integral Preamp Accessory 25 3 8 Start Up 26 3 9 Test Equipment 26 3 10 Set Up 26 3 11 Cali...

Page 6: ... Location of Controls 19 3 2 pH Range Selection Switches 20 3 3 ORP Range Selection Switches 23 3 4 ORP Test Setup 24 3 5 Test Wiring 26 3 6 LCD Calibration 27 3 7 LCD Test Setup Wiring 29 3 8A PCB Layout Transmitter Board P N 22795 02 30 3 8B PCB Layout Transmitter Board P N 22795 01 30 4 1 Simplified Block Diagram 31 5 1 Model 1181 pH ORP Schematic Diagram 34 5 2 Model 1181 pH ORP Schematic Diag...

Page 7: ...o and Span potentiometers The electronic printed circuits are protected from the environment by the NEMA 4X weatherproof corrosion resistant enclosure The printed circuit cards plug into a moisture barrier which is isolated from the field wiring and calibration terminals Routine field calibration does not require exposing the electronics to harsh industrial environments All PCBs are conformal coat...

Page 8: ... 025 inches double amplitude 5 to 50 Hz for 2 hours EMI RFI EN61326 MODEL 1181pH ORP SECTION 1 0 DESCRIPTION AND SPECIFICATIONS FIGURE 1 1 BLIND ANALOG DISPLAY LOAD POWER SUPPLY REQUIREMENTS 45 VDC 800 OHMS MIN 1750 OHMS MAX 10 VDC 24 VDC 33 VDC ZERO LOAD 45 VDC LIFT OFF NOMINAL MAXIMUM POWER SUPPLY VOLTAGE 1750 OHMS 45 VDC 600 OHMS 45 VDC LOAD RESISTANCE REQUIRED 1 8 1 7 1 6 1 5 1 4 1 3 1 2 1 1 1...

Page 9: ... play receive their input from the 4 20 mA loop current and will display pH to the calibrated output only The 1181pH Transmitter is available with an integral preamp The Code 43 integral preamp is for use with sensors having a PT100 tem perature compensator and the Code 44 internal preamp is for use with the Rosemount Analytical standard 3K temperature compensator An integral preamp is not compati...

Page 10: ...ess steel nameplate specify marking CODE AGENCY APPROVALS 67 FM Explosion proof and Intrinsically Safe 69 CSA Explosion proof and Intrinsically Safe 73 CENELEC Intrinsically Safe CE not available with Code 01 1181 pH 01 07 11 67 EXAMPLE 1 6 ORDERING INFORMATION Model 1181 Two Wire Transmitter is housed in a NEMA 7B explosion proof 4X weatherproof corrosion resistant enclosure and includes all the ...

Page 11: ...ensor conduit from liquids which can cause a short NOTE Intrinsically safe units must be installed in accordance with their designated drawing numbers See Section 2 5 for details Further non certified components CAN NOT be substituted with certified units This would void all certifications 2 2 MECHANICAL INSTALLATION Two threaded mounting holes are located in the bottom of the trans mitter housing...

Page 12: ...draining 2 3 4 The transmitter case shall be grounded Power supply regulation is not critical Even with the power supply ripple of one volt peak to peak the ripple in the output signal would be negligible NOTE For best EMI RFI protection the power sup ply signal cable must be shielded and placed in an earth grounded rigid metal conduit Connect the outer shield to the earth ground terminal provided...

Page 13: ... threaded metal plug with at least five threads engaged 4 The serial tag cover on the external ZERO and SPAN adjustments must be in place 6 Explosion proof installation must be in accordance with Drawing Number 1400155 see Figure 2 12 5 For sensors in hazardous area locations explo sion proof junction boxes can be provided to house the preamplifier This does not warrant the pH or ORP sensor explos...

Page 14: ...8 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 3 Integral Preamp Installation DWG NO REV 40118154 C ...

Page 15: ...9 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 4 Wiring Details Integral Preamp DWG NO REV 40118119 C ...

Page 16: ...10 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 5 Installation of 1181 Series for Intrinsically Safe Operation CENELEC Page 1 of 3 DWG NO REV 1400143 C ...

Page 17: ...11 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 6 Installation of 1181 Series for Intrinsically Safe Operation CENELEC Page 2 of 3 DWG NO REV 1400143 C ...

Page 18: ...12 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 7 Installation of 1181 Series for Intrinsically Safe Operation CENELEC Page 3 of 3 DWG NO REV 1400143 C ...

Page 19: ...13 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 8 Schematic System 1181 pH ORP CSA DWG NO REV 1400123 E ...

Page 20: ...14 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 9 1181 Schematic System F M I S Approved Entity Page 1 of 3 DWG NO REV 1400153 D ...

Page 21: ...15 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 10 1181 Schematic System F M I S Approved Entity Page 2 of 3 DWG NO REV 1400153 D ...

Page 22: ...16 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 11 1181 Schematic System F M I S Approved Entity Page 3 of 3 DWG NO REV 1400153 D ...

Page 23: ...17 MODEL 1181 pH ORP SECTION 2 0 INSTALLATION FIGURE 2 12 1181 Schematic System F M E P Approved DWG NO REV 1400155 C ...

Page 24: ...or from the Model 213 4 Install a 4 to 20 mADC ammeter between TB1 2 and TB1 3 of the transmitter Disconnect the indicating meter during this test 5 Place pH range switch of the Model 213 in 0 pH output position Adjust ZERO control under serial label for 4 mADC output 6 Place pH range switch of the Model 213 in 14 pH output position Adjust SPAN control under serial label for a 20 mADC output NOTE ...

Page 25: ...19 MODEL 1181pH ORP SECTION 3 0 START UP AND CALIBRATION FIGURE 3 1 Location of Controls ...

Page 26: ...20 MODEL 1181pH ORP SECTION 3 0 START UP AND CALIBRATION FIGURE 3 2 pH Range Selection Switches DWG NO REV 40118152 A ...

Page 27: ... to stabilize NOTE The sensor must be at the same temperature as the buffer solution to obtain maximum accuracy Allow several minutes for the sen sor to reach ambient temperature 4 Adjust the ZERO control under the serial label until the reading agrees with the buffer solution value 5 Remove the sensor from the low range buffer solution and rinse it in clean water 6 Immerse the sensor in the high ...

Page 28: ...ired for 200 mV range 1 The mid scale mV range is 0 mV Switches 6 and 7 must be closed and switches 5 and 8 must be opened 2 A span of 400 mV is required Switch 2 must be closed and switches 1 3 and 4 must be opened 3 Any mid scale mV range between 1200 and 1200 may be selected 4 Spans between 200 to 2400 mV are available 3 5 2 Polarity Selection The Model 1181 ORP is calibrated in the American co...

Page 29: ...23 MODEL 1181pH ORP SECTION 3 0 START UP AND CALIBRATION FIGURE 3 3 ORP Range Selection Switches DWG NO REV 40118151 A ...

Page 30: ...ION 3 6 MODEL 1181 ORP SYSTEM CALIBRATION Upon completion of electrical calibration of the Model 1181 ORP it may be desired to check the total system operation by using a solution with a known oxidation reduction potential 3 6 1 Quinhydrone Solution A commonly used ORP standard solution is the saturated quinhydrone solu tion This can be made quite simply by adding a few crystals of quinhydrone to ...

Page 31: ...n and in good operating condition consistent repeatable calibrations can be achieved 3 7 OPERATING WITH INTEGRAL PREAMP ACCESSORY The preamp may be ordered as an accessory to the Model 1181 pH ORP This enables the user to mount the preamp integral to the Model 1181 pH ORP This will eliminate the use of a junction box when remote preamps are required This preamp is applicable to explosion proof Cla...

Page 32: ...te the 1181 LCD RTI refer to input display unit in conjunction with the complete 1181 pH instrument FIGURE 3 5 Test Wiring Not available with integral preamp options 3 9 TEST EQUIPMENT 1 DC power supply cable of 30V at 50mA Hewlett Packard 6216A or equivalent Model 515 2 Two digital voltmeters to measure 2 5V and 4 20 mA Fluke 8050A or equivalent 3 Model 213 pH Simulator 4 1181 pH pre amp part num...

Page 33: ...27 MODEL 1181pH ORP SECTION 3 0 START UP AND CALIBRATION FIGURE 3 6 LCD Calibration ...

Page 34: ...ed applica tion no further adjustment to the display is necessary The standard procedures included in the 1181 instruc tion manual should be followed for proper instrument start up and calibration see the start up and calibra tion section of the instruction If a range other than the factory set range or testing of the LCD module is required observe the following pro cedures They are divided into t...

Page 35: ...29 MODEL 1181pH ORP SECTION 3 0 START UP AND CALIBRATION FIGURE 3 7 LCD Test Set Up Wiring DWG NO REV 40118160 B ...

Page 36: ... retrofitting an LCD RTD Style to an existing 1181 you must insure that the instrument transmitter board is properly modified There are two versions possible If you have a P N 22795 02 PCB you simply move the jumper from the W5 position to the W6 position or omit entirely If your PCB is P N 22795 01 you must clip and remove the diode CR11 Refer below to Figures 3 8A and 3 8B ...

Page 37: ...r polarity by phase modulating the mod ulator and demodulator 4 1 1 An external preamplifier is used which receives 5 volts power from P S S ARl receives the signal input from the external preamplifier 2 5 volts for pH 1 0 volt for ORP and its gain is modified by the inter nal range select switches The modulator is a current device and is coupled to the demodulator by an isola tion transformer T2 ...

Page 38: ...ring information regarding a replacement preamplifier 5 2 3 If the Model 1181 does not calibrate as specified in paragraph 3 2 3 3 5 4 for ORP one or more of the electronic circuit boards is defective To minimize downtime a complete set of circuit boards should be placed into service and calibrated 5 2 4 To isolate which of the three circuit boards is defective nominal voltages are shown in Figure...

Page 39: ...in correct location location transmitter PCB see Figures 3 8A and 3 8B 5 Power PCB defective 5 Item 6 Figure 6 1 Needs replacement Indication does 1 Wiring at TB2 connecting wrong 1 Correct wiring condition tighten not respond to pH Connecting loose or wiring defective connections or repair defective wiring or mV changes 2 Span and or mid scale switches 2 Set Switches accordingly Refer to not set ...

Page 40: ...34 MODEL 1181pH ORP SECTION 5 0 MAINTENANCE AND TROUBLESHOOTING FIGURE 5 1 Model 1181 pH ORP Schematic Diagram ...

Page 41: ...35 MODEL 1181pH ORP SECTION 5 0 MAINTENANCE AND TROUBLESHOOTING FIGURE 5 2 Model 1181 pH ORP Schematic Diagram FM Intrinsically Safe 1 of 3 ...

Page 42: ...MODEL 1181pH ORP SECTION 5 0 MAINTENANCE AND TROUBLESHOOTING FIGURE 5 2 Model 1181 pH ORP Schematic Diagram FM Intrinsically Safe 2 of 3 36 ...

Page 43: ...MODEL 1181pH ORP SECTION 5 0 MAINTENANCE AND TROUBLESHOOTING FIGURE 5 2 Model 1181 pH ORP Schematic Diagram FM Intrinsically Safe 3 of 3 37 ...

Page 44: ... wire Transmitters MODEL 1181pH ORP SECTION 6 0 PARTS LIST SECTION 6 0 PARTS LIST 6 1 GENERAL Following are the parts list and illustrations for identifying the parts and assemblies of the Model 1181 pH and 1181 ORP Two Wire Transmitters ...

Page 45: ...long 1 9910404 Washer Nylon 2 9910600 Washer Flat 2 9910610 Washer Lock 2 8 22803 01 Matrix Cover Kit 1181 ORP 1 Consists of 32640 01 Cover Matrix Model ORP 1 9600620 Screw Short 1 9600628 Screw Long 1 9910404 Washer Nylon 2 9910600 Washer Flat 2 9910610 Washer Lock 2 9 3002425 Cover 10 23701 00 Meter Cover Kit 1 Consists of 3002429 Housing 1 9550135 O Ring 1 3002421 Window 1 32491 00 Ring Retaine...

Page 46: ...N4933 R11 432K CR3 1N4833 R12 866K CR4 1N4933 R13 1 74M CR12 1N4148 R14 3 48M CR13 1N4148 R15 221K CR14 1N4148 R34 49 9K CR15 1N4148 R35 49 9K Q6 2N3906 R36 49 9K Q7 2N3906 R37 49 9K Q8 2N3906 R38 100K Pot Q9 2N3906 R39 698K R1 24 9K S1 9100124 R2 107K T2 9080066 R3 215K VR1 MPS5020A R4 432K VR2 MPS5010A Resistor are in ohms 1 0 2W MF unless otherwise noted Capacitor values are in microfarads Rose...

Page 47: ...1K C5 0 01 500V Ceramic R19 10K C6 0 47 R21 200K C7 100 Picofarads 100V Ceramic R23 100K Zero Pot C8 1uf R29 5K Span Pot C16 100 Picofarads 100V Ceramic T1 9080066 C17 100 Picofarads 100V Ceramic VR4 1N4734A CR5 1N4933 VR7 964B CR6 1N4933 VR8 964B Q1 2N5087 VR9 1N4734A Q2 2N5087 VR10 1N4734A R16 30 1K Resistor are in ohms 1 0 2W MF unless otherwise noted Capacitor values are in microfarads unless ...

Page 48: ...ption AR5 1CL7611DCPA 9030042 R25 162K C9 0 01 500V Ceramic R26 13K C10 0 01 500V Ceramic R27 10K CR9 1N4003 R28 100K CR10 1N4003 R30 165K CR11 1N4003 R31 49 9 1 1W Q4 2N5087 VR3 MPS5010A Q5 92PU51A or 2N6727 VR5 V68MA3B R22 24 9K VR6 J507 R24 158K Resistor are in ohms 1 0 2W MF unless otherwise noted Capacitor values are in microfarads Rosemount Analytical parts numbers ...

Page 49: ... must be supplied 3 Carefully package the materials and enclose your Letter of Transmittal see Warranty If possible pack the materials in the same manner as they were received 4 Send the package prepaid to Rosemount Analytical Inc Uniloc Division Uniloc Division 2400 Barranca Parkway Irvine CA 92606 Attn Factory Repair RMA No ____________ Mark the package Returned for Repair Model No ____ 7 3 NON ...

Page 50: ......

Page 51: ...greed upon in writing in advance by an authorized Seller representative All costs of dismantling reinstallation and freight and the time and expenses of Seller s person nel for site travel and diagnosis under this warranty clause shall be borne by Buyer unless accepted in writing by Seller Goods repaired and parts replaced during the warranty period shall be in warranty for the remainder of the or...

Page 52: ...ight answers right now ON LINE ORDERING NOW AVAILABLE ON OUR WEB SITE http www raihome com Emerson Process Management Liquid Division 2400 Barranca Parkway Irvine CA 92606 USA Tel 949 757 8500 Fax 949 474 7250 http www raihome com Rosemount Analytical Inc 2003 ...

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