Teledyne 3000MB Operating Instructions Manual
  1. Manuals
  2. Brands
  3. Teledyne Manuals
  4. Analytical Instruments
  5. 3000MB
  6. Operating instructions manual
Teledyne 3000MB Operating Instructions Manual

Teledyne 3000MB Operating Instructions Manual

Percent oxygen analyzer
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Percent Oxygen Analyzer
OPERATING INSTRUCTIONS FOR
Model 3000 MB
Percent Oxygen Analyzer
DANGER
HIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS
MONITORING SYSTEM.
PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM.
HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PER-
SIST FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED.
03/31/01
ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING.
ECO:#
BEFORE CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED
SUPERVISOR/MANAGER.
i

Teledyne Analytical Instruments

Advertisement

Table of Contents
loading

Related Manuals for Teledyne 3000MB

Summary of Contents for Teledyne 3000MB

  • Page 1: Teledyne Analytical Instruments

    HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PER- SIST FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED. 03/31/01 ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING. ECO:# BEFORE CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR/MANAGER. Teledyne Analytical Instruments...

  • Page 2: Model 3000Mb

    Any safeguards required such as locks, labels, or redun- dancy, must be provided by the user or specifically requested of Teledyne at the time the order is placed.
  • Page 3 In addition to all standard features, this model also has separate ports for zero and span gases, and built-in control valves. The internal valves are entirely under the control of the 3000MB electronics, to automatically switch between gases in synchronization with the analyzer’s operations...

  • Page 4: Table Of Contents

    Model 3000MB Table of Contents 1 Introduction 1.1 Overview ................ 1-1 1.2 Typical Applications ............1-1 1.3 Main Features of the Analyzer ........1-1 1.4 Model Designations ............1-2 1.5 Front Panel (Operator Interface) ........1-3 1.6 Interface Panel ............... 1-5 2 Operational Theory 2.1 Introduction ..............
  • Page 5 5.2 System Self Diagnostic Test ........... 5-2 5.3 Major Internal Components ..........5-2 5.4 Cleaning ................ 5-3 5.5 Troubleshooting ............. 5-3 Appendix A-1 Model 3000MB Specifications ........A-1 A-2 Recommended 2-Year Spare Parts List ......A-2 A-3 Drawing List ..............A-3 Teledyne Analytical Instruments...
  • Page 6 Since the use of this instrument is beyond the control of Teledyne, no responsibility by Teledyne, its affiliates, and agents for damage or injury from misuse or neglect of this equipment is implied or assumed.

  • Page 7: Introduction

    Introduction 1 Introduction Overview The Teledyne Analytical Instruments Model 3000MB Percent Oxygen Analyzer is a versatile microprocessor-based instrument for detecting the percentage of oxygen in a variety of background gases. This manual covers the Model 3000MB General Purpose flush-panel and/or rack-mount units only. These units are for indoor use in a nonhazardous environment.

  • Page 8: Model Designations

    Model Designations 3000MB: Standard model. 3000MB-C: In addition to all standard features, this model also has separate ports for zero and span gases, and built-in control valves. The internal valves are entirely under the control of the 3000MA electronics, to automatically switch between gases in synchronization with the analyzer’s operations.

  • Page 9: Front Panel (Operator Interface)

    Figure 1-1: Model 3000MB Front Panel 1.5 Front Panel (Operator Interface) The standard 3000MB is housed in a rugged metal case with all con- trols and displays accessible from the front panel. See Figure 1-1. The front panel has thirteen buttons for operating the analyzer, a digital meter, an alphanumeric display, and a window for viewing the sample flowmeter.
  • Page 10 1 Introduction Model 3000MB Function Keys: Six touch-sensitive membrane switches are used to change the specific function performed by the analyzer: • Perform analysis for oxygen content of a sample gas. Analyze • Perform system-related tasks (described in detail in System chapter 4, Operation.).

  • Page 11: Interface Panel

    Current signal outputs are optional and may not appear on your instrument. The connectors are described briefly here and in detail in the Installation chapter of this manual. Figure 1-2: Model 3000MB Rear Panel • Power Connection Universal AC power source.
  • Page 12 1 Introduction Model 3000MB Teledyne Analytical Instruments...

  • Page 13: Operational Theory

    Precise Paramagnetic Sensor 2.2.1 Principles of Operation The heart of the 3000MB is a paramagnetic type oxygen sensor that is maintanance free and has a long lifetime. Oxygen has a very high magnetic sucseptibility compared to other gases and thus displays a particularly para- magnetic behavior.
  • Page 14 The Electronics and heating elements require a separate power source, from the rest of the 3000MB capable of delivering 1.5 amps approximately at 24 volts dc. The output of the sensor is roughly calibrated to be 0 to 1 volt DC for the the range of 0 to 100 % 02.

  • Page 15: Cross Interference

    Oxygen. It is actually displaying the cross sensitivity to another gas. The following table shows the cross sensitivity of some gases when changing from pure nitrogen to 100% of one of the gases listed. Teledyne Analytical Instruments...
  • Page 16 2 Operational Theory Model 3000MB Cross Cross Sensitivity Sensitivity in vol. % in vol. % Acetylene C -0.24 Hydrogen chloride HCI -0.30 Allene C -0.44 Hydrogen fluoride HF +0.10 Ammonia NH -0.26 Hydrogen iodide HI -1.10 Argon Ar -0.22 Hydrogen sulphide H S -0.39...

  • Page 17: Sample System

    Depending on the mode of operation either sample or calibration gas is delivered. The Model 3000MB sample system is designed and fabricated to ensure that the oxygen concentration of the gas is not altered as it travels through the sample system.

  • Page 18: Electronics And Signal Processing

    Model 3000MB Electronics and Signal Processing The Model 3000MB Percent Oxygen Analyzer uses an 8031 microcon- troller with 32 kB of RAM and 128 kB of ROM to control all signal pro- cessing, input/output, and display functions for the analyzer. System power is supplied from a universal power supply module designed to be compatible with any international power source.
  • Page 19 Converter 24V Power Supply Power Supply Auto Range System Micro- Failure Processor Alarm Displays Self T est Signal Concentration D to A 0-1 V Converter Range 0-1 V Figure 2-6: Block Diagram of the Model 3000MB Electronics Teledyne Analytical Instruments...
  • Page 20 2 Operational Theory Model 3000MB Teledyne Analytical Instruments...

  • Page 21: Installation

    3/4" NPT and two 1" NPT adapters and the appropriate sealing conduit. For gas connections, the unit is supplied with 1/4" tube fittings, and 6 millimeter adapters are supplied for metric system installations. Teledyne Analytical Instruments...
  • Page 22 3 Installation Model 3000MB Figure 3-1: Front View of the Model 3000MB (Simplified) Teledyne Analytical Instruments...

  • Page 23: Electrical Connections

    Percent Oxygen Analyzer Installation 3 Figure 3-2: Required Front Door Clearance Electrical Connections Figure 3-3 shows the Model 3000MB Electrical Connector Panel. There are terminal blocks for connecting power, communications, and both digital and analog concentration outputs. Figure 3-3: Electrical Connector Panel...

  • Page 24: Primary Input Power

    3 Installation Model 3000MB For safe connections, ensure that no uninsulated wire extends outside of the connectors they are attached to. Stripped wire ends must insert com- pletely into terminal blocks. No uninsulated wiring should be able to come in contact with fingers, tools or clothing during normal operation.
  • Page 25 The signal output for concentration is linear over the currently selected analysis range. For example, if the analyzer is set on a range that was defined as 0–10 % O , then the output would be as shown in Table 3-1. Teledyne Analytical Instruments...

  • Page 26: Alarm Relays

    3 Installation Model 3000MB Table 3-1: Analog Concentration Output—Example Voltage Signal Current Signal Output (V dc) Output (mA dc) 10.4 12.0 13.6 15.2 16.8 18.4 20.0 To provide an indication of the range, a second pair of analog output terminals are used. They generate a steady preset voltage (or current when using the current outputs) to represent a particular range.

  • Page 27: Digital Remote Cal Input

    Remote Zero and Span Inputs: The REMOTE SPAN and RE- MOTE ZERO inputs are on the DIGITAL INPUT terminal block. They accept 0 V (OFF) or 24 V dc (ON) for remote control of calibration. (See Remote Calibration Protocol below.) Teledyne Analytical Instruments...
  • Page 28 (See Remote Calibration Protocol below.) Remote Calibration Protocol: To properly time the Digital Remote Cal Inputs to the Model 3000MB Analyzer, the customer's controller must monitor the CAL CONTACT relay. When the contact is OPEN, the analyzer is analyzing, the Remote Cal Inputs are being polled, and a zero or span command can be sent.

  • Page 29: Range Id Relays

    If you have the –C Internal valve option—which includes additional zero and span gas inputs— the 3000MB automatically regulates the zero, span and sample gas flow. 3.3.6 Range ID Relays There are four dedicated RANGE ID CONTACT relays.

  • Page 30: Remote Sensor And Solenoid Valves

    Toggling input. Stops/Starts any status message output from the RS-232, until st<enter> is sent again. The RS-232 protocol allows some flexibility in its implementation. Table 3-5 lists certain RS-232 values that are required by the 3000MB implementation. Table 3-5: Required RS-232 Options...
  • Page 31 In addition, each individual line has a series FET with a nominal ON resistance of 5 ohms (9 ohms worst case). This could limit the obtainable voltage, depending on the load impedance applied. See Figure 3-9. Figure 3-9: FET Series Resistance 3-11 Teledyne Analytical Instruments...

  • Page 32: Gas Connection

    3 Installation Model 3000MB Gas Connections Before using this instrument, it should be determined if the unit will be used for pressurized service or vacuum service and low pressure applica- tions. Inspect the restrictor kit that came with the unit. The kit consist of two restrictors and a union for 1/4”...
  • Page 33 These valves are completely under control of the 3000PB Electronics. They can be externally controlled only indirectly through the Remote Cal Inputs, described below. 3-13 Teledyne Analytical Instruments...

  • Page 34: Testing The System

    Check Local, State, and Federal laws, and ensure that the exhaust stream vents to an appropriately controlled area if required. Note: If your 3000MB has the –V option, see Sample In, above, for gas pressure/flow considerations. Testing the System Before plugging the instrument into the power source: •...

  • Page 35: Operation

    • Set alarm setpoints, and modes of alarm operation (latching, failsafe, etc). Before you configure your 3000MB these default values are in effect: Ranges: LO = 1 %, MED = 5 %, HI = 10 % Auto Ranging: ON Alarm Relays: Defeated, 10 %, HI, Not failsafe, Not latching Zero: Auto, every 0 days at 0 hours Span: Auto, at 20.9 %, every 0 days at 0 hours...

  • Page 36: Using The Data Entry And Function Buttons

    4 Operation Model 3000MB Using the Data Entry and Function Buttons Data Entry Buttons: The < > arrow buttons select options from the menu currently displayed on the VFD screen. The selected option blinks. When the selected option includes a modifiable item, the arrow buttons can be used to increment or decrement that modifiable item.

  • Page 37: The System Function

    Installing or Changing a Password, below, for a table of ASCII characters available.) Once a unique password is assigned and activated, the operator MUST enter the UNIQUE password to gain access to set-up functions which alter the instrument's Teledyne Analytical Instruments...

  • Page 38: Setting The Display

    4 Operation Model 3000MB operation, such as setting the instrument span or zero setting, adjusting the alarm setpoints, or defining analysis ranges. After a password is assigned, the operator must log out to activate it. Until then, anyone can continue to operate the instrument without entering the new password.

  • Page 39: Setting Up An Auto-Cal

    However, the instrument can still be used for analysis or for initiating a self- test without entering the password. Teledyne Analytical Instruments...

  • Page 40: Entering The Password

    4 Operation Model 3000MB If you have decided not to employ password security, use the default password TBEAI. This password will be displayed automatically by the microprocessor. The operator just presses the Enter key to be allowed total access to the instrument’s features.

  • Page 41: Installing Or Changing The Password

    Characters Available for Password Definition: ¥ " & < > When you have finished typing the new password, press Enter. A verification screen appears. The screen will prompt you to retype your password for verification. Teledyne Analytical Instruments...

  • Page 42: Logout

    4 Operation Model 3000MB A A A A A Retype PWD To Verify Wait a moment for the entry screen. You will be given clearance to proceed. A A A A A <ENT> TO Proceed Use the arrow keys to retype your password and press Enter when finished.

  • Page 43: System Self-Diagnostic Test

    Operation 4 4.3.5 System Self-Diagnostic Test The Model 3000MB has a built-in self-diagnostic testing routine. Pre- programmed signals are sent through the power supply, output board and sensor circuit. The return signal is analyzed, and at the end of the test the status of each function is displayed on the screen, either as OK or as a number between 1 and 3.

  • Page 44: The Span Functions

    4 Operation Model 3000MB The Span Functions The analyzer is calibrated using span gas. NOTE: Zero is not necessary for Percent (%) level measurements. Additional information on Zero functions is provided in the Appendix A-6 of this manual. Although the instrument can be spanned using air, a span gas with a known oxygen concentration in the range of 70–90% of full scale of the...

  • Page 45: Manual Mode Spanning

    Press Enter to enter the span value into the system and begin the span calibration. Once the span has begun, the microprocessor samples the output at a predetermined rate. It calculates the difference between successive samplings and displays this difference as Slope on the screen. It takes several seconds 4-11 Teledyne Analytical Instruments...

  • Page 46: The Alarms Function

    The Alarms Function The Model 3000MB is equipped with 2 fully adjustable concentration alarms and a system failure alarm. Each alarm has a relay with a set of form “C" contacts rated for 3 amperes resistive load at 250 V ac. See Figure in Chapter 3, Installation and/or the Interconnection Diagram included at the back of this manual for relay terminal connections.
  • Page 47 Five parameters can be changed on this screen: • Value of the alarm setpoint, AL–1 #### % (oxygen) • Out-of-range direction, HI or LO • Defeated? Dft–Y/N (Yes/No) • Failsafe? Fs–Y/N (Yes/No) • Latching? Ltch–Y/N (Yes/No). 4-13 Teledyne Analytical Instruments...

  • Page 48: The Range Function

    Med = 0–5.00 % High = 0–10.00 %. The Model 3000MB is set at the factory to default to autoranging. In this mode, the microprocessor automatically responds to concentration changes by switching ranges for optimum readout sensitivity. If the current range limits are exceeded, the instrument will automatically shift to the next higher range.

  • Page 49: Setting The Analog Output Ranges

    25 %, even if the oxygen concentration is higher than 25 %. 4.6.3 Fixed Range Analysis The autoranging mode of the instrument can be overridden, forcing the analyzer DC outputs to stay in a single predetermined range. 4-15 Teledyne Analytical Instruments...

  • Page 50: The Analyze Function

    Signal Output The standard Model 3000MB Percent Oxygen Analyzer is equipped with two 0–1 V dc analog output terminals accessible on the back panel (one concentration and one range ID). The –MA option also has two isolated 4–...
  • Page 51 They generate a steady preset voltage (or current if you have current outputs) to represent a particular range. The following table gives the range ID output for each analysis range: Range Voltage (V) Current (mA) 0.25 0.50 0.75 CAL (0-25%) 1.00 4-17 Teledyne Analytical Instruments...
  • Page 52 4 Operation Model 3000MB 4-18 Teledyne Analytical Instruments...

  • Page 53: Maintenance

    Remove Power to Unit before replacing the fuse. - Push and turn the Fuse Holder 1/2 turn to the left. - Remove the old fuse, and - Assemble in thenew fuse in reverse order Figure 5-1: Fuse holder, 3AG Type Teledyne Analytical Instruments...

  • Page 54: System Self Diagnostic Test

    5 Maintenance Model 3000MB System Self Diagnostic Test system 1. Press the button to enter the system mode 2. Use the < > arrow keys to move to More, and press Enter. 3. Use the < > arrow keys to move to Self-Test, and press Enter.

  • Page 55: Cleaning

    Percent OxygenAnalyzer Maintenance 5 The 3000MB contains the following major components: Paramagnetic Sensor 2 x Power Supplies Microprocessor Displays 5 Digit, LED Meter. 2 line, 20 character, alphanumeric, VFD display. 5.4 Cleaning If the instrument is unmounted at the time of cleaning, disconnect the instrument form its power source.
  • Page 56 5 Maintenance Model 3000MB Increase the flow rate and/or length of tubing in order to dilute or minimize the diffusion of oxygen from the vent back to the analyzer. Problem: Inaccurate zero operation (i.e. the user has zeroed the analyzer accidentally on gas much higher than one would normally use for zero gas.

  • Page 57: Appendix

    Percent Oxygen Analyzer Appendix Appendix A-1 Model 3000MB Specifications Packaging: General Purpose • Nema 4 rated bulkhead mount enclosure. Sensor: Paramagnetic Sensor 90 % Response Time: 10 seconds at 25 °C (77 °F). Ranges: Three user definable ranges from 0-1 % to 0-100 %, plus air calibration range of 0-25 %.

  • Page 58: Recommended 2-Year Spare Parts List

    Appendix Model 3000MB Analog outputs: 0-1 V dc percent-of-range (Standard) 0-1 V dc range ID (Standard) 4-20 mA dc—isolated— percent-of-range (Optional) 4-20 mA dc—isolated— range ID (Optional) Dimensions: 20.5” High x 13” Wide x 9” Tall (52.1 cm x 33 cm x 22.9 cm)

  • Page 59: Drawing List

    Percent Oxygen Analyzer Appendix A-3 Drawing List D-73375 Outline Drawing D-73374 Interconnection Diagram Teledyne Analytical Instruments...

Table of Contents