Rosemount Analytical SOLU COMP II User Manual (English)

Mr. Richard PriceAug 2, 2025

What to do if absolute value of measured voltage exceeds 2500 mV in Rosemount Analytical SOLU COMP II Measuring Instruments?

K
Kenneth HallAug 2, 2025
If the absolute value of the measured voltage exceeds 2500 mV in your Rosemount Analytical Measuring Instruments, it typically indicates a problem with the sensor wiring or analyzer electronics. The voltage of a pH cell is usually between 600 mV and -600 mV, and the voltage of an ORP cell is between 2000 and -2000 mV. Here are a few steps to take: 1. If it's a new installation, double-check the wiring connections, including those in any junction boxes. 2. If using a junction box with a preamplifier, ensure the wires supplying power (±5 Vdc) to the preamplifier are correctly connected at both the analyzer and the junction box. 3. Make sure the sensor is fully submerged in the process liquid.

Brand	Rosemount Analytical
Model	SOLU COMP II
Category	Measuring Instruments
Language	English

Brand

Rosemount Analytical

Model

SOLU COMP II

Essential Instructions and Warnings

Essential Instructions

Key guidelines for safe and proper operation of the instrument.

Risk of Electrical Shock

Critical safety alerts related to electrical hazards during installation and servicing.

Caution

Warning regarding radio frequency energy and potential communication interference.

Warning

Alert indicating the product is not intended for light industrial environments.

Quick Start Guide

Wiring Connections

Diagrams for connecting sensors, alarms, outputs, and power.

Initial Setup Procedure

Step-by-step configuration prompts for sensors, units, language, and settings.

Quick Reference Guide

Menu Tree for Measurements

Visual representation of the analyzer's menu structure for measurements.

Section 1.0 Description and Specifications

1.1 Features and Applications

Overview of analyzer capabilities, measurement options, and enclosure types.

1.2 General Specifications

Details on case, dimensions, power, RFI/EMI, LVD, inputs, outputs, and alarms.

Specific Measurement Types

Details for Contacting Conductivity, Toroidal, pH/ORP, Flow, Chlorine, DO, Ozone.

1.3 Ordering Information

Analyzer model codes, power, mounting, measurement options, and accessories.

Section 2.0 Installation

2.1 Unpacking and Inspection

Procedures for checking the instrument upon arrival and ensuring all parts are present.

2.2 Mounting Procedures

Instructions for Panel, Pipe, and Surface mounting installations.

Section 4.0 Display and Operation

4.1 Display and Keypad

Description of the analyzer's display, information screens, and keypad layout.

4.3 Programming and Calibrating Tutorial

Step-by-step guide for programming and calibrating the Solu Comp II.

4.4 Security Settings

How to use and set security codes to prevent unauthorized changes.

4.5 Using Hold Function

Procedure for placing the analyzer in hold mode for maintenance.

Section 5.0 Programming the Analyzer

5.1 General Programming Overview

Overview of programming tasks including outputs, alarms, units, and security.

5.2 Changing Startup Settings

Procedure to modify initial setup parameters after power-up.

5.3 Configuring and Ranging Outputs

Steps to set up 4-20mA or 0-20mA outputs and assign measurements.

5.4 Configuring Alarms and Setpoints

How to assign alarm relays, set logic, and define alarm setpoints.

5.5 Selecting Measurement Type

Programming the analyzer for Dissolved Oxygen, pH, ORP, or Redox measurements.

5.6 Temperature Compensation

Choosing temperature units and setting auto/manual compensation.

5.7 Setting a Security Code

Procedure to set or change the analyzer's security code.

5.8 Noise Rejection

Setting the AC power frequency for optimal noise rejection.

5.9 Single or Dual Sensor Input

Configuring the analyzer for single or dual sensor operation.

5.10 Resetting Factory Defaults

Procedure to restore factory calibration and default settings.

5.11 Display, Language, and Contrast

Setting default screen, language, and screen contrast.

Section 6.0 Calibration

6.1 Calibration Introduction

Overview of sensor calibration procedures for DO, pH, ORP, and temperature.

6.2 Calibrating Temperature

Procedure to calibrate the temperature sensor for accuracy.

6.3 Calibration - Dissolved Oxygen

Steps for zeroing and air calibrating the dissolved oxygen sensor.

6.4 Auto Calibration - pH

Procedure for two-point buffer calibration of the pH sensor.

6.5 Manual Calibration - pH

Procedure for manual pH calibration using non-standard buffers.

6.6 Standardization - pH

Method to match analyzer pH readings to a referee instrument.

6.7 Entering Known Slope - pH

Procedure to manually enter a known pH electrode slope.

6.8 ORP Calibration

Procedure for single-point calibration of the ORP sensor.

Section 7.0 Maintenance

7.1 Maintenance Overview

General maintenance requirements for the Solu Comp II analyzer.

7.2 Replacement Parts

List of replaceable components for panel and pipe/surface mount versions.

Section 8.0 Troubleshooting

8.1 Troubleshooting Overview

Guide to identifying and resolving analyzer and sensor faults.

8.2 Troubleshooting Using Fault Codes

Explanation of fault codes and their corresponding troubleshooting steps.

8.3 Troubleshooting DO Issues

Diagnosing issues with Dissolved Oxygen readings.

8.4 Troubleshooting pH Issues

Diagnosing issues with pH readings.

8.5 Troubleshooting General Issues

Troubleshooting common problems not specific to DO or pH sensors.

8.6 Simulating Inputs - Dissolved Oxygen

Procedure to simulate sensor current for DO diagnostics.

8.7 Simulating Inputs - pH

Procedure to simulate voltage for pH diagnostics.

8.8 Simulating Temperature

Procedure to simulate RTD or thermistor input for temperature diagnostics.

8.9 Measuring Reference Voltage - pH

Procedure to check the reference electrode for poisoning.

Section 9.0 Return of Material

9.1 General Return Procedures

Information on contacting for repair authorization and return.

9.2 Warranty Repair

Steps for returning instruments under warranty for repair.

9.3 Non-Warranty Repair

Steps for returning instruments for out-of-warranty repair.

Rosemount Analytical SOLU COMP II User Manual

Table of Contents

Questions and Answers:

Rosemount Analytical SOLU COMP II Specifications

Summary