Teledyne 316RA, 316RB, 316RAD, 316RBD User Manual

MODEL

316RA/RB/RAD/RBD

TRACE OXYGEN ANALYZER

INSTRUCTION MANUAL

TAI Sales Order Number: Model Number: Serial Number: Micro-Fuel Cell Class: Output Signal: Ranges: X1: ppm Oxygen

X10: ppm Oxygen X100: ppm Oxygen X1000: ppm Oxygen

Alarm Set Point #1: Alarm Set Point #2:

TELEDYNE ANALYTICAL INSTRUMENTS

P/N M34905.4

M38546.4

ECO# 95-348

06/06/95

All Rights Reserved. No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other language or computer language in whole or in part, in any form or by any means, whether it be electronic, mechanical, magnetic, optical, manual, or otherwise, without the prior written consent of Teledyne Analytical Instruments, 16830 Chestnut Street, City of Industry, CA

91749-1580.

Warranty

This equipment is sold subject to the mutual agreement that it is warranted by us free from defects of material and of construction, and that our liability shall be limited to replacing or repairing at our factory (without charge, except for transportation), or at customer plant at our option, any material or construction in which defects become apparent within one year from the date of shipment, except in cases where quotations or acknowledgements provide for a shorter period. The Micro-Fuel Cell warranty period begins on the date of shipment from Teledyne. Components manufactured by others bear the warranty of their manufacturer. This warranty does not cover defects caused by wear, accident, misuse, neglect or repairs other than those performed by Teledyne or an authorized service center. We assume no liability for direct or indirect damages of any kind and the purchaser by the acceptance of the equipment will assume all liability for any damage which may result from its use or misuse.

We reserve the right to employ any suitable material in the manufacture of our apparatus, and to make any alterations in the dimensions, shape or weight of any parts,

in so far as such alterations do not adversely affect our warranty.

Important Notice

This instrument is intended to be used as a tool to gather valuable data. The information provided by the instrument may assist the user in eliminating potential

hazards caused by the process that the instrument is intended to monitor; however, it is

essential that all personnel involved in the use of the instrument or its interface with the process being measured be properly trained in the process itself, as well as all

instrumentation related to it.

The safety of personnel is ultimately the responsibility of those who control process conditions. While this instrument may be able to provide early warning of imminent danger, it has no control over process conditions, and can be misused. In particular, any alarm or control system installed must be tested and understood, both as to how they operate and as to how they can be defeated. Any safeguards required such as locks, labels, or redundancy must be provided by the user or specifically requested of Teledyne when the order is placed.

The purchaser must be aware of the hazardous conditions inherent in the process(es) he uses. He is responsible for training his personnel, for providing hazard warning methods and instrumentation per the appropriate standards, and for ensuring that hazard warning devices and instrumentation are maintained and operated properly.

TAI, the manufacturer of this instrument, cannot accept responsibility for condi-

tions beyond its knowledge and control. No statement expressed or implied by this

document or any information disseminated by the manufacturer or his agents is to be construed as a warranty of adequate safety control under the user’s process conditions.

TELEDYNE ANALYTICAL INSTRUMENTS

T able of Contents

Introduction ............................................................................... 1

Features .............................................................................. 2

Operational Theory ................................................................... 3

Micro-Fuel Cell Sensor........................................................ 3

Sampling System ................................................................ 3

Installation ................................................................................. 4

Location............................................................................... 5

Gas Line Connections ......................................................... 5

Input Selector Manifold (Optional) ................................. 5

Pressure Reduction or Regulation ................................. 6

Zero or Near Zero Pressure Sampling .......................... 6

Vent Connection ............................................................ 6

Electrical Connections ......................................................... 6

Output Signal Connection .............................................. 7

Alarm Relay Connection (Optional) ............................... 7

Operations ................................................................................. 8

Front Panel Controls ........................................................... 8

Meter Zero .......................................................................... 8

Electrical Start-Up ............................................................... 9

Sample System Start-Up..................................................... 9

Calibration ........................................................................... 10

Alarm Setting (Optional) ...................................................... 11

Routine Operation ............................................................... 11

Maintenance .............................................................................. 12

Replacing the Fuse ............................................................. 12

Replacing the Sensor .......................................................... 12

Spare Cells .................................................................... 13

Warranty Conditions ...................................................... 13

Troubleshooting .................................................................. 14

Appendix

Specifications ...................................................................... 15

Spare Parts List................................................................... 16

Drawing List ........................................................................ 17

Material Safety Data Sheet ............................................ 18

TELEDYNE ANALYTICAL INSTRUMENTS

Trace Oxygen Analyzer Model 316RA/RB/RAD/RBD

Introduction

The Teledyne Analytical Instruments (TAI) Series 316 Trace Oxygen Analyzer uses a unique Micro-Fuel Cell to measure the concentration of oxygen in a gas stream. The cell has an absolute zero and produces a linear output from the low parts per million (ppm) level through 21% (210,000 ppm) oxygen. When coupled with a “state of the art” two stage amplifier system that incorporates operational amplifiers, the cell provides linear trace oxygen analysis in the standard ranges of 0-10, 0-100, 0-1000, and 010,000 ppm. The cell is specific for oxygen and is not influenced by sample flow rate or the presence of hydrocarbons or halogenated hydrocarbons. The instrument may be calibrated with air, eliminating the need for certified trace oxygen calibration gases.

TELEDYNE ANALYTICAL INSTRUMENTS

Model 316RA/RB/RAD/RBD Trace Oxygen Analyzer

Features

Maintenance-Free Sensor. Teledyne’s Micro-Fuel Cell oxygen

sensor is a sealed electrochemical transducer with no electrolyte to change or electrodes to clean. When the cell reaches the end of its useful life (6 months minimum), simply remove and replace.

Temperature Compensation. The Series 316 includes a built-in

temperature compensation circuit for greater accuracy.

Meter Readout. The Series 316 is equipped with an accurate (± 0.5%

linearity) panel meter which gives direct readout of the analysis. A linear 100-division scale or digital panel meter gives reliable, accurate readout of the analysis at any point on the scale.

Output Signal. For applications requiring a continuous recording of

the sample oxygen, a linear output signal from 0-1 mVDC to 0-1 VDC is available at no extra charge.

Multiple Ranges of Analysis. The Series 316 provides 4 standard

ranges of analysis: 0-10, 0-100, 0-1,000 ppm, 0-10,000 ppm, plus a CAL range, which allows instrument calibration using air.

Speed of Response. Fast upscale response is a key feature of the

Series 316. On the 0-1,000 and 0-10,000 ppm ranges, 90% response time is less than 10 seconds (at constant temperature).

Compact Packaging. The Series 316 includes an integral throttle

valve, flowmeter, and shutoff valve in a package that uses little more than 10" × 10" of panel space. Access to the major components of the system is gained by opening the front panel door of the instrument case. The microfuel cell manifold assembly mounts within the interior, permitting cell replacement without the use of tools.

Panel or Bulkhead Mounting. Two standard versions of the Series

316 Series are available. A panel mounted enclosure houses the Model 316RA, and a wall mounted bulkhead enclosure houses the Model 316RB. Both versions share the same features and performance.

Optional Features

Current Output Signal. Grounded or isolated outputs (i.e., 4-20

mADC, 1-5 mADC, 10-15 mADC) can be included in the Series 316 for interface to external devices, such as computers, recorders, etc.

Integral Alarm Circuitry. The Series 316 provides independently

adjustable control circuits for one or two alarms. The alarms are fully adjustable throughout the scale using the front panel controls.

TELEDYNE ANALYTICAL INSTRUMENTS

Trace Oxygen Analyzer Model 316RA/RB/RAD/RBD

Operational Theory

Micro-Fuel Cell Sensor

The Series 316 uses a Micro-Fuel Cell for the measurement of trace oxygen. This Micro-Fuel Cell is an electrochemical transducer whose features include:

• Specificity for oxygen

• Long interval between calibration

• Long life

• Low maintenance

• Disposable configuration

The transducer functions as a fuel cell; in this instance, the fuel is oxygen. Oxygen diffusing into the cell reacts chemically to produce an electrical current that is proportional to the oxygen concentration in the gas phase immediately adjacent to the cell’s sensing surface.

Sampling System

The Series 316 contains a throttle valve and flowmeter for sample path flow control as shown on the Piping Diagram (dwg. B-9051). The integral flow path also features a shutoff valve located downstream from the Micro-Fuel Cell manifold. When closed, these two valves isolate the cell from the high oxygen concentration of air. Before shipment, the sample system is purged with either the customer’s background gas (when practical) or an inert gas, such as nitrogen. When the instrument shows a stable, low ppm oxygen level, the two valves are closed, maintaining the cell in a virtually oxygen-free atmosphere until the instrument is installed and ready for use.

NOTE: To shorten start-up time and conserve cell use, keep the two cell

valves closed until installation is complete and sample is flowing.

TELEDYNE ANALYTICAL INSTRUMENTS

Model 316RA/RB/RAD/RBD Trace Oxygen Analyzer

Installation

Precautions

1. Upon receipt of the Series 316 Oxygen Analyzer, inspect the

entire unit. Read the entire installation section before

installing the analyzer.

2. Do not scratch, puncture, or damage the mesh sensing membrane of the Micro-Fuel Cell. Damage to the membrane will require replacement of the sensor.

3. The Micro-Fuel Cell electrolyte is caustic. Avoid contact with any fluid or powder in or around the cell or unit. Do not let it come in contact with skin. If it does, immediately flush affected area with water. Consult the Emergency First Aid procedures in the Material Safety Data Sheet at the end of the manual. Do not attempt to open or repair the sensor. Leaking or exhausted sensors should be disposed of in accordance with local regulations. Consult the Material Safety Data Sheet at the end of the manual.

4. The Micro-Fuel Cell must be installed before operating the Series 316.

5. The throttle valve and the shutoff valve should remain closed until the analyzer is installed and ready to use.

6. All accessory hardware and fittings upstream from the analyzer should be leak-tested under pressure before start-up to prevent false readings upon start-up.

7. Check electrical wiring installation against the Interconnection Diagram (dwg. A-33140) before start-up to prevent accidental wiring transposition.

TELEDYNE ANALYTICAL INSTRUMENTS

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