Page 2 - TABLE OF CONTENTS
TABLE OF CONTENTS MODEL 311D 1. INTRODUCTION 1 1.1 Description 1 1.2 Method of Analysis 1 1.3 Outstanding Features 1 1.3.1 Micro-Fuel Cell 1 1.3.2 Reliable Calibration 1 1.3.3 Integral Power Supply 2 1.3.4 Accuracy and Response 2 1.3.5 Compact Packaging 3 1.3.6 Circuit Description 3 2. SUPPORTING EQ...
Page 4 - The differential power and digital panel meter; BATTERY CHECK; The Model 311D provides monitoring accuracy
After the electronics have been properly zeroed (a one-time factory operation), the instrument cannot produce an output indication in the absence of oxygen; therefore, the need for a “zero” standardization gas is obviated. 1.3.3 Integral Power Supply: The differential power and digital panel meter (...
Page 5 - WARNING; Caution should be exercised!; SUPPORTING EQUIPMENT AND SERVICES; The customer must provide a means of controlling the
Further disassembly may be accomplished by removing the backplate assembly from its four mounting standoffs, and laying the two separated assemblies out as illustrated on the “Analyzer Wiring Diagram”. The diagram is included among the drawings at the rear of the manual. 1.3.6 Circuit Description: A...
Page 6 - The Model 311D is delivered completely assembled and ready for
necessary or desirable, it must have a metallic diaphragm. Regulators with organic or plastic diaphragms are permeable to oxygen, and if used in the sampling system, will lead to high oxygen readings. For atmospheric pressure sampling, connect a pump and flow control valve downstream from the analyz...
Page 7 - DO NOT ATTEMPT TO ACTUALLY TAKE A READING
dictated by the customer’s application. If the instrument were being used to certify the oxygen content of a product for delivery, then a calibration prior to certification would certainly be in order. If, on the other hand, the instrument is being used to monitor or guard a sample, the evidence pro...
Page 8 - Positive Pressure Sampling:; When connecting the instrument to a positive; IF A FLOWING SAMPLE WAS CONNECTED TO THE MANIFOLD; If the sample is at atmospheric pressure (or; Battery Power Supply Service.; The Model 311D is for use ONLY when it is
If, on the other hand, the instrument is not to be used immediately after calibration, and a low ppm oxygen gas is being employed as a purge, allow the manifold to be purged overnight, and then disconnect both male fittings. ALWAYS DISCONNECT THE SOURCE FITTING FIRST, AND IMMEDIATELY THEREAFTER, THE...
Page 9 - Beyond adhering to a battery recharge schedule, no; Cell; The characteristics of the Micro-Fuel Cell are similar to
every two (2) days of continuous use. To recharge the batteries, place the range switch in the “OFF” position and connect the power cord to a convenience outlet. The integral charging circuit will automatically energize and regulate battery charging current when the switch is in the “OFF” position a...
Page 10 - The Class B-2C cell employed in the Model 311D is warranted; warranty null and void.; TRANSDUCTION AND TEMPERATURE COMPENSATION
No tools are required to replace the cell in the instrument. Simply unscrew (ccw) the plug at the bottom of the analyzer, and the cell will drop out of the manifold cavity. Remove the new cell from its package, and carefully remove the shorting clip. Do not touch the silver-colored sensing surface o...
Page 13 - EFFECT OF CO2 ON B-2C CELL LIFE
Page 15 - DRAWING LIST; DIAGRAM
DRAWING LIST MODEL 311D B-26473 PICTORAL DIAGRAM C-28339 SCHEMATIC C-26606 WIRING DIAGRAM NOTE: The MSDS on this material is available upon request through the Teledyne Environmental Health and Safety Coordinator. Contact at (626) 934-1592. -13-