QUICK GUIDE • Wiring Diagram Page 10 • Programming the Display Page 13 • Calibration Chapter 6 • Troubleshooting Chapter 8 19 Thomas, Irvine, California 92618 USA Call Toll-Free: 877.246.7900 (USA & Canada) Phone: 949.452.1112 Fax: 949.452.1114 E-Mail: sales@broadleytech.com Website: biotechcatalog.com Doc. No.
Broadley Technologies Corporation 19 Thomas Irvine, California 92618 USA Corporate Headquarters: Toll-Free: 877.246.7900 Tel: 949.452.1112 Fax: 949.452.1114 E-Mail: sales@biotechcatalog.
ESSENTIAL INSTRUCTIONS WARNINGS READ THIS PAGE BEFORE PROCEEDING! RISK OF ELECTRICAL SHOCK Your purchase from Broadley Technologies has resulted in one of the finest instruments available for your particular application. These instruments have been designed, and tested to meet many national and international standards. Experience indicates that its performance is directly related to the quality of the installation and knowledge of the user in operating and maintaining the instrument.
QUICK REFERENCE GUIDE MENU TREE FOR pH/DISSOLVED OXYGEN MEASUREMENTS
MODEL 30 pH/DO TABLE OF CONTENTS MODEL 30 DUAL INPUT pH/DISSOLVED OXYGEN TRANSMITTER TABLE OF CONTENTS Section Title DESCRIPTION AND SPECIFICATIONS .................................................................. 1.0 Page 1 1.1 Features and Applications ....................................................................................... 1 1.2 Specifications .......................................................................................................... 2 2.0 INSTALLATION ..........
MODEL 30 pH/DO TABLE OF CONTENTS TABLE OF CONTENTS CONT’D Section Title 6.0 CALIBRATION ......................................................................................................... Page 31 6.1 Introduction .............................................................................................................. 31 6.2 Calibrating Temperature .......................................................................................... 32 6.3 Calibration - Dissolved Oxygen ...........
MODEL 30 pH/DO TABLE OF CONTENTS TABLE OF CONTENTS CONT’D LIST OF FIGURES Number Title Page 2-1 Panel Mount Installation ........................................................................................... 6 2-2 Pipe Mount Installation ............................................................................................. 7 2-3 Surface Mount Installation........................................................................................ 8 3-1 Removing the Knockouts ...........
MODEL 30 pH/DO SECTION 1.0 DESCRIPTION AND SPECIFICATIONS SECTION 1.0. DESCRIPTION AND SPECIFICATIONS 1.1 FEATURES AND APPLICATIONS 1.2 SPECIFICATIONS 1.1 FEATURES AND APPLICATIONS The Model 30 transmitters offer the choice of single or dual sensor input with measurement choices of pH/ORP and dissolved oxygen. Dual measurement analyzers offer a wide choice of measurement combinations thus reducing the cost per loop and needed panel space.
MODEL 30 pH/DO SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.2 SPECIFICATIONS - General Case: ABS. Pipe, surface, and panel mount versions are NEMA 4X/CSA 4 (IP65). POLLUTION DEGREE 4: Extended Environment Outdoor use where conductive contamination such as rain, snow, or dust may be present. Dimensions Panel (code -1 10): 6.10 x 6.10 x 3.72 in. (155 x 155 x 94.5 mm) Surface/Pipe (code -1 11): 6.23 x 6.23 x 3.23 in. (158 x 158 x 82 mm); see page 7 for dimensions of pipe mounting bracket.
MODEL 30 pH/DO SECTION 1.0 DESCRIPTION AND SPECIFICATIONS pH/ORP For use with any standard pH or ORP sensor. Display choices are pH, ORP or Redox. The automatic buffer recognition feature uses stored buffer values and their temperature curves for the most common buffer standards available worldwide. The analyzer will recognize the value of the buffer being measured and perform a self stabilization check on the sensor before completing the calibration.
MODEL 30 pH/DO SECTION 1.0 DESCRIPTION AND SPECIFICATIONS DISSOLVED OXYGEN When used with an oxygen permeable membranecovered amperometric sensor, display choices are ppb or ppm dissolved oxygen or % saturation. Because the permeability of the membrane is a function of temperature, a correction is necessary when the sensor is used at a temperature different from the one at which it was calibrated. The Model 30 automatically applies the temperature correction factor.
MODEL 30 pH/DO SECTION 2.0 INSTALLATION SECTION 2.0. INSTALLATION 2.1 UNPACKING AND INSPECTION 2.2 INSTALLATION 2.1 UNPACKING AND INSPECTION Inspect the shipping container. If it is damaged, contact the shipper immediately for instructions. Save the box. If there is no apparent damage, unpack the container. Be sure all items shown on the packing list are present. If items are missing, notify Broadley Technologies immediately. 2.2 INSTALLATION 2.2.1 General Information 1.
MODEL 30 pH/DO SECTION 2.0 INSTALLATION 2.2.2 Panel Mounting. MILLIMETER INCH DWG. NO. 41055C11 FIGURE 2-1. Panel Mount Installation Access to the wiring terminals is through the rear cover. Four screws hold the cover in place. 6 REV.
MODEL 30 pH/DO SECTION 2.0 INSTALLATION 2.2.3 Pipe Mounting. MILLIMETER INCH DWG. NO. 41055C10 REV. A FIGURE 2-2. Pipe Mount Installation The front panel is hinged at the bottom. The panel swings down for access to the wiring terminals.
MODEL 30 pH/DO SECTION 2.0 INSTALLATION 2.2.4 Surface Mounting. MILLIMETER INCH DWG. NO. 41055C12 FIGURE 2-3. Surface Mount Installation The front panel is hinged at the bottom. The panel swings down for access to the wiring terminals. 8 REV.
MODEL 30 pH/DO SECTION 3.0 WIRING SECTION 3.0. WIRING 3.1 PREPARING CONDUIT OPENINGS 3.2 POWER, ALARM, OUTPUT, AND SENSOR CONNECTIONS 3.1 PREPARING CONDUIT OPENINGS The number of conduit openings and the location depend on the model. Model Description 30-A-PH/DO panel mount 30-B-PH/DO surface or pipe mount Conduit openings two open, three knockouts three open, no knockouts Conduit openings accept 1/2-inch conduit fittings or PG 13.5 cable glands.
MODEL 30 pH/DO SECTION 3.0 WIRING FIGURE 3-2. Wiring Connections for Model 30-A-PH/DO (Panel Mount with 115/230 Vac Power) FIGURE 3-3.
MODEL 30 pH/DO SECTION 3.0 WIRING FIGURE 3-4. Wiring Connections for Model 30-B-PH/DO (Surface/Pipe Mounting with 115/230 Vac Power) FIGURE 3-5.
MODEL 30 pH/DO SECTION 4.0 DISPLAY AND OPERATION SECTION 4.0 DISPLAY AND OPERATION 4.1 4.2 4.3 4.4 4.5 DISPLAY KEYPAD PROGRAMMING AND CALIBRATING THE MODEL 30 - TUTORIAL SECURITY USING HOLD 4.1. DISPLAY The Model 30 has a two-line display. The display can be customized to meet user requirements (see Section 5.11). Figure 4-1 shows some of the displays available during normal operation. View A is the default screen for dual sensors. View C is the default screen for a single sensor.
MODEL 30 pH/DO SECTION 4.0 DISPLAY AND OPERATION 4.3 PROGRAMMING AND CALIBRATING THE MODEL 30 - TUTORIAL Setting up and calibrating the Model 30 is easy. The following tutorial describes how to move around in the programming menus. For practice, the tutorial also describes how to assign conductivity values to the 4 and 20 mA outputs for sensor 1. Calibrate Program Calibrate Hold Display Hold Program Display Outputs Alarms Measurement >> 1.
MODEL 30 pH/DO SECTION 4.0 DISPLAY AND OPERATION 4.4 SECURITY 4.4.1 How the Security Code Works Use the security code to prevent accidental or unwanted changes to program settings, displays, and calibration. Enter Security 000 Code 1. If a security code has been programmed, pressing MENU causes the security screen to appear. 2. Enter the three-digit security code. Invalid Code 3. If the entry is correct, the main menu screen appears. If the entry is incorrect, the Invalid Code screen appears.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER SECTION 5.0 PROGRAMMING THE ANALYZER 5.1 5.2 5.3 5.4 5.5 5.6 GENERAL CHANGING STARTUP SETTINGS CONFIGURING AND RANGING THE OUTPUTS CONFIGURING ALARMS AND ASSIGNING SETPOINTS SELECTING THE TYPE OF MEASUREMENT CHOOSING TEMPERATURE UNITS AND MANUAL OR AUTOMATIC TEMPERATURE COMPENSATION 5.7 SETTING A SECURITY CODE 5.8 NOISE REJECTION 5.9 SINGLE SENSOR OR DUAL SENSOR INPUT 5.10 RESETTING FACTORY CALIBRATION AND FACTORY DEFAULT SETTINGS 5.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER TABLE 5-1. DEFAULT SETTINGS 1. SENSOR-OUTPUT ASSIGNMENTS (type of dissolved oxygen measurement, pH, ORP, or redox is selected during Quick Start) Sensor(s) Output 1 Output 2 Section Single sensor Dissolved oxygen Temperature 5.3 and 5.9 Dual sensor Dissolved oxygen (sensor 1) pH/ORP/Redox (sensor 2) 5.3 and 5.9 2. OTHER OUTPUT SETTINGS Output Dampening 0 or 4 mA Mode Section 1 off 4 Linear 5.3 2 off 4 Linear 5.3 3.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER TABLE 5-1. DEFAULT SETTINGS (continued) 5. TEMPERATURE RELATED SETTINGS Section Units °C 5.6 Automatic temperature compensation (DO) On 5.6 Automatic temperature compensation (pH) On 5.6 Solution temperature correction (pH) Off 5.5 Isopotential pH 7.00 5.5 6. MISCELLANEOUS SETTINGS Section Language English 5.11 Hold off 4.5 Security code 000 (no security code) 5.7 ac power frequency 60 Hz 5.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.3 CONFIGURING AND RANGING THE OUTPUTS. 5.3.1 Purpose The Model 30 accepts input from a dissolved oxygen, pH, or ORP sensor and has two current outputs. This section describes how to configure and range the outputs. CONFIGURE THE OUTPUTS FIRST. 1. Configuring an output means a. Selecting either a 4-20 mA or 0-20 mA output, b. Assigning a sensor and a measurement (dissolved oxygen, pH, ORP, or redox potential) to output 1 and output 2, c.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.3.3. Procedure: Configure Outputs. To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms Measurement 1. Press MENU. The main menu screen appears. Choose Program. 2. Choose Outputs. >> Output Range 3. Choose Output Configure. Output Configure Output Config? 4. Choose Output1 or Output2.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.4 CONFIGURING ALARMS AND ASSIGNING SETPOINTS 5.4.1 Purpose This section describes how to do the following: 1. assign an alarm relay to a sensor, 2. set the alarm logic to high or low, 3. assign values to the alarm setpoints, 4. set the alarm deadbands. ALARM RELAYS MUST BE CONFIGURED BEFORE ASSIGNING SETPOINTS. 5.4.2 Definitions 1. ASSIGNING ALARMS. There are three alarms (AL1, AL2, and AL3). Alarms 1 and 2 can be assigned to any sensor.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.4.3 Procedure: Configuring Alarms To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms Measurement 1. Press MENU. The main menu screen appears. Choose Program. 2. Choose Alarms. >> 3. Choose Alarm Configure. Alarm Setpoints Alarm Configure Alarm Config? AL1 AL2 4. Choose Alarm 1 (AL1), Alarm 2 (AL2), or Alarm 3 (AL3). AL3 5.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.4.4 Procedure: Programming Alarm Setpoints To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms Measurement 1. Press MENU. The main menu screen appears. Choose Program. 2. Choose Alarms. >> Alarm Setpoints 3. Choose Alarm Setpoints. Alarm Configure Select Alarm? AL1 AL2 4. Choose Alarm 1 (AL1), Alarm 2 (AL2), or Alarm 3 (AL3).
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.5 SELECTING THE TYPE OF MEASUREMENT 5.5.1 Purpose This section describes how to do the following: 1. Program the Model 30 to measure dissolved oxygen, pH, ORP, or redox potential. 2. Identify the type of dissolved oxygen sensor being used. 3. Make the following settings for dissolved oxygen a. barometric pressure units for air calibration b. electronic filtering of sensor current c. salinity correction. 4. Make the following settings for pH a.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.5.3 Definitions — pH/ORP 1. ORP. ORP is oxidation-reduction potential. It is the voltage difference between a noble metal (usually platinum) indicator electrode and a silver/silver chloride reference electrode. 2. REDOX. Redox is redox potential. Redox potential is measured the same way as ORP. The sign of the redox potential is the negative of ORP. 3. SIGN CONVENTION. The ORP of a solution of 0.1 M iron (II) ammonium sulfate and 0.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.5.4 Procedure. To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms Measurement Sensor1 Sensor2 S1Manufacturer? Rosemount Other S1Application? Other Biopharm S1 units in? ppb %sat Pressure units? mmHg 2. Choose Measurement. >> Configure? ppm 1. Press MENU. The main menu screen appears. Choose Program. inHg 3.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.6 CHOOSING TEMPERATURE UNITS AND MANUAL OR AUTOMATIC TEMPERATURE COMPENSATION 5.6.1 Purpose This section describes how to do the following: 1. Choose temperature display units (°C or °F). 2. Choose automatic or manual temperature compensation for membrane permeability and for air calibration. 3. Choose automatic or manual temperature compensation for pH. 4. Enter a temperature for manual temperature compensation. 5.6.3 Definitions — dissolved oxygen 1.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.6.3 Procedure. To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms 2. Choose >>. >> Measurement Temp Security 3. Choose Temp. >> #Sensors Config Temp? °C/F 1. Press MENU. The main menu screen appears. Choose Program. Live/Manual 4. Choose °C/F to change temperature units.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.8 NOISE REJECTION 5.8.1 Purpose. For maximum noise rejection, the frequency of the ac power must be entered in the analyzer. 5.8.2. Procedure. To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms Measurement 2. Choose >>. >> Temp Security >> #Sensors Noise Rejection ResetAnalyzer 1. Press MENU. The main menu screen appears.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER 5.10 RESETTING FACTORY CALIBRATION AND FACTORY DEFAULT SETTINGS 5.10.1 Purpose. This section describes how to re-install factory calibration and default values. The process also clears all fault messages and returns the display to the first quick start screen. 5.10.2. Procedure. To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. Calibrate Hold Program Display Outputs Alarms Measurement 2.
MODEL 30 pH/DO SECTION 5.0 PROGRAMMING THE ANALYZER To choose a menu item, move the cursor to the item and press ENTER. To store a number or setting, press ENTER. 5.11.2 Procedure: Selecting a Display Screen Calibrate Hold 1. Press MENU. The main menu screen appears. Choose Display. Display Program Default Display Language 2. Choose Default Display. Contrst 3. Press " or ' until the desired display appears. Press ENTER. For an explanation of abbreviations, see Section 5.11.1. 4.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION SECTION 6.0 CALIBRATION 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 INTRODUCTION CALIBRATING TEMPERATURE CALIBRATION - DISSOLVED OXYGEN AUTO CALIBRATION - pH MANUAL CALIBRATION - pH STANDARDIZATION - pH ENTERING A KNOWN SLOPE - pH ORP CALIBRATION 6.1 INTRODUCTION The Calibrate Menu allows the user to calibrate sensor 1 (dissolved oxygen) and sensor 2 (pH or ORP). The temperature response of each sensor can also be calibrated.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.2 CALIBRATING TEMPERATURE 6.2.1 Purpose Temperature is important in the measurement of dissolved oxygen, pH, and ORP for different reasons. Temperature affects the determination of oxygen in two ways. 1. The analyzer uses temperature during automatic air calibration. From the temperature, the analyzer calculates the vapor pressure of water and, using the barometric pressure, calculates the partial pressure of atmospheric oxygen.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.2.2 Procedure 1. Remove the sensor from the process. Place it in an insulated container of water along with a calibrated thermometer. Submerge at least the bottom two inches of the sensor. Stir continuously. 2. Allow the sensor to reach thermal equilibrium. For some sensors, the time constant for a change in temperature is 5 min., so it may take as long as 30 min. for temperature equilibration. 3.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.3 CALIBRATION — DISSOLVED OXYGEN 6.3.1 Purpose As Figure 6-1 shows, oxygen sensors generate a current directly proportional to the partial pressure of oxygen in the sample. Calibrating the sensor requires exposing it to a solution containing no oxygen (zero standard) and to a solution containing a known amount of oxygen (full-scale standard).
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.3.2 Procedure — Zeroing the sensor. 1. Place the sensor in a fresh solution of 5% sodium sulfite (Na2SO3) in water. Be sure air bubbles are not trapped against the membrane. The current will drop rapidly at first and then gradually reach a stable zero value. To monitor the sensor current, go to the main display and press ' until the sensor input current is showing.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.3.3 Procedure — Calibrating the sensor in air 1. Remove the sensor from the process stream. Use a soft tissue and a stream of water from a wash bottle to clean the membrane. Blot dry. The membrane must be dry during air calibration. 2. Pour some water in a beaker and suspend the sensor with the membrane about 0.5 inch (1 cm) above the water surface. To avoid drift caused by temperature changes, keep the sensor out of the direct sun. 3.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.3.4 Procedure — Calibrating the sensor against a standard instrument The analyzer and sensor can be calibrated against a standard instrument. For oxygen sensors installed in aeration basins in waste treatment plants, calibration against a second instrument is often preferred. For an accurate calibration be sure that… 1. The standard instrument has been zeroed and calibrated against water-saturated air following the manufacturer's instructions. 2.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.4 AUTO CALIBRATION — pH 6.4.1 Purpose 1. New sensors must be calibrated before use. Regular recalibration is also necessary. 2. Use auto calibration instead of manual calibration. Auto calibration avoids common pitfalls and reduces errors. 6.4.2 Definitions 1. AUTO CALIBRATION. The analyzer recognizes the buffers and uses temperature-corrected pH values in the calibration. The table lists the buffers the Model 30 recognizes. pH at 25°C (nominal pH) Standard(s) 1.
MODEL 30 pH/DO Calibrate Program SECTION 6.0 CALIBRATION Hold Display Calibrate? Sensor1 Sensor2 CalSensor2? Measurement S2 Slope Standardize Choose Sensor2 (pH sensor). c. Choose Measurement. d. Choose BufferCal. BufferCal e. Choose Auto. Manual S2AutoCal? Buffer1 b. Temp S2BufferCal? Auto a. Press MENU. The main menu screen appears. Choose Calibrate. f. Choose Buffer1. Buffer2 g. Rinse the sensor with water and place it in buffer 1.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.5 MANUAL CALIBRATION — pH 6.5.1 Purpose 1. New sensors must be calibrated before use. Regular recalibration is also necessary. 2. Use manual calibration if non-standard buffers are being used; otherwise, use auto calibration. Auto calibration avoids common pitfalls and reduces errors. 6.5.2 Definitions 1. MANUAL CALIBRATION. In auto calibration the analyzer recognizes the buffer and uses the temperature-corrected pH value in the calibration.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION Calibrate Program Hold Display Calibrate? Sensor1 Measurement Slope Choose Sensor2 (pH sensor). c. Choose Measurement. Temp Standardize d. Choose BufferCal. BufferCal e. Choose Manual. S2BufferCal? Manual Auto f. S2ManualCal? Buffer1 b. Sensor2 CalSensor2? S2 a. Press MENU. The main menu screen appears. Choose Calibrate. Choose Buffer1. Buffer2 g. Rinse the sensor with water and place it in buffer 1.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.6 STANDARDIZATION — pH 6.6.1 Purpose 1. The pH measured by the Model 30 analyzer can be changed to match the reading from a second or referee instrument. The process of making the two readings agree is called standardization. 2. During standardization, the difference between the two pH values is converted to the equivalent voltage. The voltage, called the reference offset, is added to all subsequent measured cell voltages before they are converted to pH.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.7 ENTERING A KNOWN SLOPE VALUE — pH 6.7.1 Purpose If the electrode slope is known from other measurements, it can be entered directly in the Model 30 transmitter. The slope must be entered as the slope at 25°C. To calculate the slope at 25°C from the slope at temperature t°C, use the equation: 298 slope at 25°C = (slope at t°C) t°C + 273 Changing the slope overrides the slope determined from the previous buffer calibration. 6.7.
MODEL 30 pH/DO SECTION 6.0 CALIBRATION 6.8 ORP CALIBRATION 6.8.1 Purpose 1. For process control, it is often important to make the measured ORP agree with the ORP of a standard solution. 2. During calibration, the measured ORP is made equal to the ORP of a standard solution at a single point. 6.8.2 Preparation of ORP standard solutions ASTM D1498-93 gives procedures for the preparation of iron (II) - iron (III) and quinhydrone ORP standards. The iron (II) - iron (III) standard is recommended.
MODEL 30 pH/DO SECTION 7.0 MAINTENANCE SECTION 7.0 MAINTENANCE 7.1 OVERVIEW 7.2 REPLACEMENT PARTS 7.1 OVERVIEW The Model 30 transmitter needs little routine maintenance. The calibration of the transmitter and sensor should be checked periodically. To recalibrate the transmitter and sensor, see Section 6.0. Clean the transmitter case and front panel by wiping with a clean soft cloth dampened with water ONLY. Do not use solvent, like alcohol, that might cause a buildup of static charge. 7.
MODEL 30 pH/DO SECTION 7.0 MAINTENANCE TABLE 7-1. Replacement Parts for Model 30 (Panel Mount Version) Location in Figure 7-1 Description Shipping Weight 1 Panel mounting kit, includes four brackets and four set screws 2 Enclosure, front, for panel mount version, includes keypad 3 lb/1.0 kg 3 Gasket, front, for panel mount version 2 lb/1.0 kg 4 note 5 2 lb/1.0 kg Screw, 2-56 x 0.187 in.
MODEL 30 pH/DO SECTION 7.0 MAINTENANCE TABLE 7-2. Replacement Parts for Model 30 (Pipe/Surface Mount Version) Location in Figure 7-2 Description 1 note Screw, 6-32 x 1.38 in. 2 note Washer Shipping Weight 3 Enclosure, front, for pipe/surface mount version, includes keypad and hinge 2 lb/1.0 kg 4 Gasket for pipe/surface mount version 2 lb/1.0 kg 5 note 6 Screw, 2-56 x 0.187 in., with integral washer Display board, LCD 7 note PCB, microprocessor 8 note Self-tapping screw, #4 x 0.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING SECTION 8.0 TROUBLESHOOTING 8.1 8.2 8.3 8.4 8.5 8.6 8.7 8.8 OVERVIEW TROUBLESHOOTING USING FAULT CODES TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — DO TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — pH TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — GENERAL SIMULATING INPUTS — pH SIMULATING TEMPERATURE MEASURING REFERENCE VOLTAGE — pH 8.1 OVERVIEW The Model 30 continuously monitors itself and the sensor for faults.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.2.3 pH Sensitive Glass Membrane is Broken The Model 30 continuously measures the impedance between the sensor solution ground and the inside of the pH-sensing electrode. If the glass membrane is intact, the impedance is normally between 10 MΩ and 1000 MΩ. If the membrane is cracked or broken, the impedance drops below 10 MΩ. If the membrane is cracked or broken, the sensor must be replaced. 8.2.4 RTD for Sensor 1 or Sensor 2 Open or Shorted.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.3 TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — DO Problem See Section New temperature during calibration more than 2-3°C different from the live reading 8.3.1 Zero current was accepted, but current is greater than the value in the table in Section 6.3.2 8.3.2 Possible error warning during sensor zero 8.3.2 Sensor cannot be zeroed; sensor zero current is too high 8.3.2 Sensor cannot be zeroed; zero reading is not stable 8.3.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.3.3 Sensor Cannot Be Zeroed: Zero Reading Is Not Stable. A. Is the sensor properly wired to the transmitter? See Section 3.2. Verify that all wiring connections are tight. B. Readings are often erratic when a new or rebuilt sensor is first placed in service. Readings usually stabilize after an hour. C.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.3.6 Process readings are erratic. A. Readings are often erratic when a new sensor or a rebuilt sensor is first placed in service. The current usually stabilizes after a few hours. B. Verify that the wiring is correct. Pay particular attention to shield and ground connections. 8.3.7 Readings drift. A. Is the sensor new or has it been recently serviced? New or rebuilt sensors may require several hours to stabilize.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.4 TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — pH. Problem See Section New temperature during calibration more than 2-3°C different from the live reading 8.4.1 Calibration Error warning during two-point calibration 8.4.2 Calibration Error warning during standardization 8.4.3 Invalid Input while manually entering slope 8.4.4 Sensor does not respond to known pH changes 8.4.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING GLASS IMPEDANCE (Glass Imp) less than 10 MΩ Glass bulb is cracked or broken. Sensor has failed. between 10 and 1000 MΩ Normal reading. greater than 1000 MΩ pH sensor may be nearing the end of its service life. 8.4.3 Calibration Error during Standardization. During standardization, the millivolt signal from the pH cell is increased or decreased until it agrees with the pH reading from a referee instrument.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.4.7 Calibration Was Successful, but Process pH Is Grossly Wrong and/or Noisy. Grossly wrong or noisy readings suggest a ground loop (measurement system connected to earth ground at more than one point), a floating system (no earth ground), or noise being brought into the analyzer by the sensor cable. The problem arises from the process or installation. It is not a fault of the analyzer. The problem should disappear once the sensor is taken out of the system.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.5 TROUBLESHOOTING WHEN NO ERROR MESSAGE IS SHOWING — GENERAL Problem See Section Current output is too low 8.5.1 Alarm relays do not operate when setpoint is exceeded 8.5.2 Display is unreadable — too faint or all pixels dark 8.5.3 8.5.1 Current Output Too Low. Load resistance is too high. Maximum load is 600 Ω. 8.5.2 Alarm Relays Do Not Work A. Verify the relays are properly wired. B. Replace power supply PCB. 8.5.3 Display is Unreadable.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.6 SIMULATING INPUTS — pH 8.6.1 General This section describes how to simulate a pH input into the Model 30 transmitter. To simulate a pH measurement, connect a standard millivolt source to the transmitter. If the transmitter is working properly, it will accurately measure the input voltage and convert it to pH. Although the general procedure is the same, the wiring details depend on the location of the preamplifier. 8.6.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.7 SIMULATING TEMPERATURE 8.7.1 General. The Model 30 accepts either a Pt100 RTD (for pH) or a 22k NTC thermistor (for DO sensors). The Pt100 RTD is in a three-wire configuration. See Figure 8-3. The 22k thermistor has a two-wire configuration. 8.7.2 Simulating temperature To simulate the temperature input, wire a decade box to the transmitter or junction box as shown in Figure 8-4.
MODEL 30 pH/DO SECTION 8.0 TROUBLESHOOTING 8.8 MEASURING REFERENCE VOLTAGE Some processes contain substances that poison or shift the potential of the reference electrode. Sulfide is a good example. Prolonged exposure to sulfide converts the reference electrode from a silver/silver chloride electrode to a silver/silver sulfide electrode. The change in reference voltage is several hundred millivolts.
MODEL 30 pH/DO SECTION 9.0 RETURN OF MATERIAL SECTION 9.0 RETURN OF MATERIAL 9.1 9.2 9.3 GENERAL WARRANTY REPAIR NON-WARRANTY REPAIR 9.1 GENERAL. To expedite the repair and return of instruments, proper communication between the customer and the factory is important. Before returning a product for repair, call 1-877-246-7900 for a Return Materials Authorization (RMA) number. 9.2 WARRANTY REPAIR. The following is the procedure for returning instruments still under warranty: 1.
WARRANTY Goods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in workmanship and material under normal use and service for a period of twelve (12) months from the date of shipment by Seller. Consumables, pH electrodes, membranes, liquid junctions, electrolyte, O-rings, etc. are warranted to be free from defects in workmanship and material under normal use and service for a period of ninety (90) days from date of shipment by Seller.
BROADLEY TECHNOLOGIES CUSTOMER SUPPORT CENTER 1-877-246-7900 http://www.biotechcatalog.com Broadley Technologies 19 Thomas Irvine, CA 92618 USA Tel: (949) 452-1112 http://www.biotechcatalog.
