Emerson Process Management 3081 pH/ORP Table of Contents CONT’D List of Figures CONT’D

MODEL 3081 pH/ORP TABLE OF CONTENTS

TABLE OF CONTENTS - CONT’D

LIST OF FIGURES - CONT’D

Number	Title	Page
3-23	Procedure for Removing BNC Connector and Preparing Coaxial Cable for
	Connection to the Model 3081 pH/ORP Transmitter	26
3-24	Preparation of Raw Connecting Cable (PN 9200273)	27
4-1	Intrinsically Safe BASEEFA Model 3081 pH/ORP Label	31
4-2	FMRC Installation for Model 3081 pH/ORP Transmitter	32
4-3	CSA Installation for Model 3081 pH/ORP Transmitter	34
4-4	Explosion-Proof Installation for Model 3081 pH/ORP Transmitter	36
5-1	Process Display Screen	37
5-2	Program Display Screen	37
5-3	Infrared Remote Controller	38
5-4	Menu Tree for pH	39
5-5	Menu Tree for ORP	40
6-1	Connecting the HART Communicator	42
6-2	Menu Tree for pH (HART)	44
6-3	Menu Tree for ORP (HART)	46
8-1	Suggested Glass Impedance Warning and Failure Limits	60
8-2	Suggested Warning and Failure Limits for Low Impedance Reference Electrodes .	61
8-3	Suggested Warning and Failure Limits for High Impedance Glass Reference
	Electrodes	61
10-1	Suggested Warning and Failure Limits for Low Impedance Reference Electrodes .	79
10-2	Suggested Glass Impedance Warning and Failure Limits for a Glass Reference....
	Electrode	79
11-1	Exploded View of Model 3081 pH/ORP Transmitter	85
11-2	Checking the Potential of the Reference Electrode	87
12-1	Warning Annunciation	89
12-2	Fault Annunciation	89
12-3	Three-Wire RTD	96
12-4	Temperature Simulation into the Model 3081 pH/ORP Transmitter	97
12-5	Troubleshooting Flow Chart/Preamplifier in Sensor-Mounted Junction Box or
	Remote Junction Box	108
12-6	Troubleshooting Flow Chart/Preamplifier in Transmitter or Built into Sensor	109
12-7	pH Simulation When the Preamplifier is Located in the Transmitter	111
12-8	pH Simulation When the Preamplifier is Located in a Remote Junction Box or
	in a Sensor-Mounted Junction Box	111
12-9	Simulate pH Through Model 381+ Sensor Preamplifier	112
13-1	pH Measurement Cell	114
13-2	Measuring Electrode (pH)	115
13-3	Cross-Section Through the pH Glass	115
13-4	Reference Electrode	116
13-5	The Origin of Liquid Junction Potential	116
13-6	Glass Electrode Slope	117
13-7	Two-Point Buffer Calibration	118
13-8	Liquid Junction Potential Mismatch	119
14-1	ORP Measurement Cell	120
14-2	Measuring Electrode (ORP)	121
14-3	Reference Electrode	121
14-4	The Origin of Liquid Junction Potential	122
14-5	Electrode Potential	122
14-6	ORP Measurement Interpretation	123
15-1	HART Communications	126
15-2	AMS Main Menu Tools	127

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