Parameter Setting, Remote Probe Connector | Teledyne 3000PA instruction

Percent Oxygen Analyzer		Installation 3

st<enter>	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 3-2 lists certain RS-232 values that are required by the 3000PA implementation.

Table 3-2: Required RS-232 Options

Parameter	Setting
Baud	2400
Byte	8 bits
Parity	none
Stop Bits	1
Message Interval	2 seconds

3.3.3 Remote Probe Connector

The 3000PA is a single-chassis instrument, which has no Remote Probe Unit. Instead, the Remote Probe connector is used as another method for controlling external sample/zero/span gas valves. See Figure 3-6.

Figure 3-6: Remote Probe Connector Pinouts

Due to power supply limits, the maximum combined current that can be pulled from these output lines is 100 mA. (If two lines are ON at the same time, each must be limited to 50 mA, etc.) If more current and/or a different voltage is required, use a relay, power amplifier, or other matching circuitry to provide the actual driving current.

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 3-7.

Teledyne Analytical Instruments

3-9

Image 31

Teledyne 3000PA operating instructions Parameter Setting, Remote Probe Connector

Contents

Model 3000PA Teledyne Analytical Instruments Model 3000PA Percent Oxygen Analyzer Specific Model Information IiiInstrument Serial Number Includes the following options Operation Model 3000PA Table of Contents IntroductionInstallation OperationalTheory Percent Oxygen Analyzer MaintenanceAppendix Combustible GAS Usage Warning Percent Oxygen Analyzer Introduction Main Features of the AnalyzerOverview Typical Applications Introduction Model 3000PA Model Designations Model 3000PA Front Panel Front Panel Operator Interface Introduction Model 3000PA Rear Panel Equipment Interface Recognizing Difference Between LCDAnalog Outputs Optional RS-232 PortRemote Probe Network Principles of Operation Operational Theory IntroductionMicro-Fuel Cell Sensor Percent Oxygen Analyzer Operational Theory Anatomy of a Micro-Fuel Cell Operational Theory Model 3000PA + 2H O + 4e → 4OH Electrochemical Reactions Effect of Pressure Calibration Characteristics Class A-3 Cell Micro-Fuel Cell ClassClass A-5 Cell Class B-3 Cell Hydrogen and/or Helium ServiceSample System Class B-1 Cell Piping Layout and Flow Diagram for Standard Model Span Zero Sample Electronics and Signal Processing Block Diagram of the Model 3000P Electronics Operational Theory Model 3000PA Unpacking the Analyzer Percent Oxygen Analyzer InstallationMounting the Analyzer Rear Panel Connections Installation Model 3000PA Rear Panel of the Model 3000PA Gas Connections Electrical Connections Percent Oxygen Analyzer Installation Teledyne Analytical Instruments Percent Oxygen Analyzer Installation Command Description Remote Probe Connector Parameter Setting Testing the System Installing the Micro-Fuel Cell Auto Ranging on Percent Oxygen Analyzer Operation Operation Model 3000PA Using the Data Entry and Function Buttons Hierarchy of Functions and Subfunctions System Function Setting the Display Password Protection Percent Oxygen Analyzer Operation Setting up an Auto-Cal Entering the Password Installing or Changing the Password Logout Version Screen Cell Failure Span Functions Span Cal Auto Mode Spanning Manual Mode Spanning Alarms Function Installation AL-1 AL-2 Choose Alarm Range Function Setting the Analog Output Ranges Fixed Range Analysis Operation Model 3000PA Autoranging Analysis Voltage Signal Current Signal Output V dc Output mA dc Signal OutputAnalyze Function Range Voltage Current mA Storing and Handling Replacement Cells Routine MaintenanceCell Replacement Percent Oxygen Analyzer Maintenance When to Replace a Cell Maintenance Model 3000P Removing the Micro-Fuel Cell Index Removing or Installing a Micro-Fuel Cell Cell Warranty System Self Diagnostic Test Fuse Replacement Preamp PowerMajor Internal Components Analog Rear-Panel Screws Cleaning Solution TroubleshootingPossible Cause Maintenance Model 3000P Teledyne Analytical Instruments Percent Oxygen Analyzer Appendix Model 3000PA Specifications Appendix Model 3000PA Qty Part Number Description Recommended 2-Year Spare Parts List 19-inch Relay Rack Panel Mount Drawing List Series Analyzers Calibration GAS Conversions Zero Cal ZeroSettlingMan ENT To Begin