Table of Contents
Advertisement
OPERATING INSTRUCTIONS FOR
INSTA-TRANS
Trace and Percent Oxygen
Transmitter
P/N M72103
08/02/10
DANGER
Toxic gases and or flammable liquids may be present in this monitoring system.
Personal protective equipment may be required when servicing this instrument.
Hazardous voltages exist on certain components internally which may persist
for a time even after the power is turned off and disconnected.
Only authorized personnel should conduct maintenance and/or servicing.
Before conducting any maintenance or servicing, consult with authorized
supervisor/manager.
Teledyne Analytical Instruments
Advertisement
Table of Contents
Related Manuals for Teledyne Insta-Trans
Summary of Contents for Teledyne Insta-Trans
- Page 1 Hazardous voltages exist on certain components internally which may persist for a time even after the power is turned off and disconnected. Only authorized personnel should conduct maintenance and/or servicing. Before conducting any maintenance or servicing, consult with authorized supervisor/manager. Teledyne Analytical Instruments...
- Page 2 Any safeguards required such as locks, labels, or redundancy, must be provided by the user or specifically requested of Teledyne at the time the order is placed.
-
Page 3: Cell Class
Commonly available options are listed below, with check boxes. Any that are incorporated in the instrument for which this manual is supplied are indicated by a check mark in the box. Instrument Serial Number: _______________________ Insta-Trans Transmitter Model: ____________ Cell Class: ... -
Page 4: Table Of Contents
3.1 Unpacking the Transmitter 3.2 Mounting the Transmitter 3.3 Gas Connections 3.4 Electrical Connections 3.5 Installing the Micro-fuel Cell 3.6 Testing the System Operation ..................19 4.1 Introduction Teledyne Analytical Instruments... - Page 5 5.2.1 Storing and Handling Replacement Cells 5.2.2 When to Replace a Cell 5.2.3 Removing the Micro-fuel Cell 5.2.4 Cell Warranty 5.3 Insta-Trace Sensor Appendix ..................29 Specifications Recommended Spare Parts List Drawings Teledyne Analytical Instruments...
-
Page 6: List Of Figures
Figure 2-3: Characteristic Input/Output Curve for a Micro-fuel Cell ..9 Figure 2-4: Gas and Other Connections to the Transmitter ..10 Figure 2-5: Electronics Block Diagram .......... 12 Figure 3-1: Insta-Trans Connections and Mounting Dimensions ... 14 Figure 4-1: Insta-Trace Operation ..........21 Figure 5-1: Cell Removal .............. 26 Figure 5-2: Cell Removal Insta-Trace ........... - Page 7 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 8 Insta-Trans Teledyne Analytical Instruments viii...
-
Page 9: Introduction
The Teledyne Analytical Instruments Insta-Trans Trace Oxygen Transmitter is a versatile instrument for detecting oxygen at the parts-per- million (ppm) level in a variety of gases. This manual covers the Insta-Trans Trace Oxygen Transmitter. These units are NEMA-4 rated and may be used in hazardous environments. -
Page 10: Operator Interface
The standard Insta-Trans is housed in a rugged NEMA-4 rated metal case with all switches and the display accessible from the outside. Figure 1-1 illustrates the Insta-Trans display and switches while Table 1- 1 shows the decimal point (DP) location for the various ranges. -
Page 11: Figure 1-1: Range Selection
Trace Oxygen Transmitter Introduction Figure 1-1: Range Selection Teledyne Analytical Instruments... - Page 12 Introduction Insta-Trans Teledyne Analytical Instruments...
-
Page 13: Operational Theory
2.2 Micro-fuel Cell Sensor 2.2.1 Principles of Operation The oxygen sensor used in the Insta-Trans series is a Micro-fuel Cell designed and manufactured by Analytical Instruments. It is a sealed plastic disposable electrochemical transducer. The active components of the Micro-fuel Cell are a cathode, an anode, and the 15% aqueous KOH electrolyte in which they are immersed. -
Page 14: Anatomy Of A Micro-Fuel Cell
The anode structure is below the cathode. It is made of lead and has a proprietary design which is meant to maximize the amount of metal available for chemical reaction. Teledyne Analytical Instruments... -
Page 15: Electrochemical Reactions
(Four electrons combine with one oxygen molecule—in the presence of water from the electrolyte—to produce four hydroxyl ions.) When the oxygen is reduced at the cathode, lead is simultaneously oxidized at the anode by the following HALF REACTION: Teledyne Analytical Instruments... -
Page 16: The Effect Of Pressure
Micro-fuel Cell input is constant, a convenient characteristic of the cell is that the current produced in an external circuit is directly proportional to the rate at which oxygen molecules reach the cathode, and this rate is directly proportional to the concentration of oxygen in the gaseous Teledyne Analytical Instruments... -
Page 17: Figure 2-3: Characteristic Input/Output Curve For A Micro-Fuel Cell
Figure 2-3. Measuring circuits do not have to compensate for nonlinearities. In addition, since there is zero output in the absence oxygen, the characteristic curve has close to an absolute zero (within ± 0.5 ppm oxygen). Figure 2-3: Characteristic Input/Output Curve for a Micro-fuel Cell Teledyne Analytical Instruments... -
Page 18: Sample System
Depending on the mode of operation either sample or calibration gas is delivered. The Insta-Trans 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 19: Electronics And Signal Processing
Trace Oxygen Transmitter Operational Theory 2.4 Electronics and Signal Processing The Insta-Trans Trace Oxygen transmitter uses standard electronic circuitry. Power is supplied via the 4-20 mA current loop. The processing electronics are located inside the transmitter case. Three boards are accessible after removing the top housing. Figure 2-5 is a block diagram of the transmitter electronics. -
Page 20: Figure 2-5: Electronics Block Diagram
Operational Theory Insta-Trans Figure 2-5: Electronics Block Diagram Teledyne Analytical Instruments... -
Page 21: Installation
3.2 Mounting the Transmitter The Insta-Trans is intended for indoor or outdoor use. The Insta-Trans transmitter is provided with a wall mount bracket. Refer to Figure 3-1 for mounting information and dimensions. The display and operator control switches are located on the top of the transmitter. -
Page 22: Figure 3-1: Insta-Trans Connections And Mounting Dimensions
(This may require an additional 1/8 turn beyond finger-tight.) 2. Hold the fitting body steady with a backup wrench, and with another wrench rotate the nut another 1-1/4 turns. Figure 3-1: Insta-Trans Connections and Mounting Dimensions SAMPLE IN: Gas connections are made at the SAMPLE IN connections. -
Page 23: Electrical Connections
(3/8") to the left side mounting bolt. The signal and power are supplied by a single 4 pin electrical connector on the left side of the analyzer. The Insta-Trans is supplied with a twenty-four inch cable which mates with the power/signal connector. -
Page 24: Installing The Micro-Fuel Cell
(9.3V + (5.1 + 250) ohms x 20ma). For Intrinsically Safe (IS) installation, special considerations are required. The Insta-Trans analyzer has been designed to be Intrinsically Safe when used with a properly selected and installed safety barrier. This design utilizes redundant safety features to prevent the Insta-Trans from becoming an ignition source in the event of a circuit failure. -
Page 25: Testing The System
4. Push the ▲ and▼buttons. Observe that the gas concentration reading goes up and down in rather coarse increments as the buttons are pushed. 5. Push the FINE button.Observe that the CRS annunciator goes out and the FIN annunciator illuminates on the display. Teledyne Analytical Instruments... - Page 26 6. Push the ▲ and▼buttons. Observe that the gas concentration reading goes up and down in fine increments as the buttons are pushed. 7. Push the RUN button. Observe that the FIN and RNG annunciators go out. The transmitter is now in Run mode. Teledyne Analytical Instruments...
-
Page 27: Operation
AND IN MOST CASES QUICKLY SATURATE THE CELL WITH OXYGEN WHICH CAN THEN REQUIRE A LONG PURGE DOWN TIME FOR THE SENSOR WHEN USED FOR LOW OXYGEN CONCENTRATION MEASUREMENTS. IN THE EVENT THAT FLOW IS INTERRUPTED INTO THE TRANSMITTER, IT IS Teledyne Analytical Instruments... -
Page 28: Calibration
Calibration Follow the following instructions to calibrate the Insta-Trans Trace Oxygen Transmitter. Refer to figure 4-1. 1. Select range to be calibrated and enable calibration gas flow. 2. Wait until the display reading is stable before beginning the span adjustment. -
Page 29: Figure 4-1: Insta-Trace Operation
Trace Oxygen Transmitter Operation Figure 4-1: Insta-Trace Operation Teledyne Analytical Instruments... - Page 30 Operation Insta-Trans Teledyne Analytical Instruments...
-
Page 31: Maintenance
To have a replacement cell available when it is needed, TAI recommends that one spare cell be purchased 9-10 months after commissioning the Insta-Trans, or shortly before the end of the cell's one year warranty period. CAUTION: DO NOT STOCKPILE CELLS. THE WARRANTY PERIOD STARTS ON THE DAY OF SHIPMENT. -
Page 32: When To Replace A Cell
The characteristics of the Micro-fuel Cell show an almost constant output throughout its useful life and then falls off sharply towards zero at the end. Cell failure in the Insta-Trans is usually characterized by the inability to span or excessive offset when used on low ppm ranges. - Page 33 This sensor has a life expectancy of eight months when used in trace measurement applications. The B1 cell is the standard percent sensor for use with Insta-Trans. It is suitable for use when the analyzer will be used on a percent range. The B1 has a warranty period of six months from the date of shipment and a life expectancy of eight months in air.
-
Page 34: Insta-Trace Sensor
Insta-Trans Figure 5-1: Cell Removal 5.3 Insta-Trace Sensor Teledyne’s Insta-Trace Sensor (patent pending) provides rapid sensor installation recovery time. The Insta-Trace system allows a new sensor to be installed and working at low ppm (parts per million) in a matter of minutes. The insta-Trace option includes the Insta-Trace Sensor and a special Insta-Trace cell holder (the B2 cell adapter is not used). - Page 35 To install the Insta-Trace: The Insta-Trans transmitter must be purged with sample gas at a flow rate of approximately 0.2 SCFH during installation. Remove the Insta-Trace cell holder by unscrewing the collar (see Figure 5-2).
-
Page 36: Figure 5-2: Cell Removal Insta-Trace
Maintenance Insta-Trans Figure 5-2: Cell Removal Insta-Trace Teledyne Analytical Instruments... -
Page 37: Appendix
Relative Humidity: 0-100% RH, NEMA-4 rated. Stability: ± 1% in 24 hours (at constant temperature) Reproducibility: ± 1% of full scale at constant temperature Sensor Type: Micro-fuel Cell class B2C, L2C, B1, A2C, Insta-Trace Signal Output: 4–20 mA DC Teledyne Analytical Instruments... -
Page 38: Recommended Spare Parts List
PCB I/O C6689-A2C A2C Micro-fuel Cell C6689-A5 A5 Micro-fuel Cell C6689-B1 B1 Micro-fuel Cell C6689-B2C B2C Micro-fuel Cell B73016 Insta-Trans Sensor A-type B71875 Insta-Trans Sensor B-type CP2070 Connector, Power Signal O290 O-Rings B72087 Insta-Trace Cell Holder Application Dependant. Only 1 required A minimum charge is applicable to spare parts orders. - Page 39 Trace Oxygen Transmitter Appendix Orders should be sent to: TELEDYNE Analytical Instruments 16830 Chestnut Street City of Industry, CA 91749-1580 Phone (626) 934-1500, Fax (626) 961-2538 Web: www.teledyne-ai.com or your local representative. Teledyne Analytical Instruments...
-
Page 40: Drawings
Appendix Insta-Trans Drawings Teledyne Analytical Instruments...
Need help?
Do you have a question about the Insta-Trans and is the answer not in the manual?
Questions and answers