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Summary of Contents for OXIGRAF O2iM
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Page 1: Instruction Manual
INSTRUCTION MANUAL OXIGRAF O2iM NEMA 4X Oxygen Deficiency Monitor 1170 TERRA BELLA AVENUE MOUNTAIN VIEW, CA 94043 TEL (650) 237-0155 FAX (650) 237-0159 oxigraf@oxigraf.com http://www.oxigraf.com February 13, 2007 08-0427-B0, Manual, O2iM.doc Page 1... - Page 2 Rev B0: December 15, 2006 Document modified from O2iM Manual Rev A0. Table formats, Horn/Strobe Oxigraf sensors and oxygen analyzers are protected by the following patents: US 5,448,071 5,491,341 5,500,768 5,615,052 5,625,189, 6,150,159, and EP 0 729 565 B1. 1170 TERRA BELLA AVENUE...
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Page 3: Table Of Contents
Oxigraf O2iM NEMA 4X Oxygen Analyzer Table of Contents Warnings, Cautions and Notes......................5 Introduction ............................6 Product Description ........................6 Options............................7 Accessories ..........................7 Specifications..........................7 2.4.1 Performance Conditions.....................7 2.4.2 Performance Specifications....................8 2.4.3 Electrical Specifications.....................8 2.4.4 Mechanical Specifications ....................8 Getting Started ............................. 9 Analyzer Installation ........................9... - Page 4 Oxigraf O2iM NEMA 4X Oxygen Analyzer 5.17 Pump Drive Alarm Threshold....................21 5.18 Pressure Alarm Thresholds ......................21 5.19 Relay Latch Mode........................21 5.20 Relay Flash Mode ........................21 5.21 Relay Failsafe Mode ........................21 5.22 Relay Exclusive Mode ......................21 5.23 Relay Allocation ........................22 5.24 Horn/Strobe Mode ........................22...
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Page 5: Warnings, Cautions And Notes
Indicates a potentially harmful condition that can lead to personal injury. • Do not use the O2iM oxygen analyzer in the presence of flammable gases. Use of this instrument in such an environment may present an explosion hazard. Caution: Indicates a condition that may lead to equipment damage or malfunction. -
Page 6: Introduction
2. Introduction 2.1 Product Description This document describes the operation and user interface of the Oxigraf O2iM NEMA 4X oxygen deficiency monitor. The O2iM integrates an Oxigraf oxygen sensor with auto calibration, vacuum fluorescent alphanumeric display (VFD), keypad, limit detection relay, 4-20 mA analog output, horn and strobe alarms, a serial communication link with Oxigraf protocol and an optional multipoint gas sampling system. -
Page 7: Options
• Four channel sequential multipoint gas sampler • Internal battery backup system that will keep the O2iM operating and reporting (including any of our remote indicators) for one hour if the external power is interrupted • Remote indicator light module (wall mount for control rooms, etc) •... -
Page 8: Performance Specifications
Oxigraf O2iM NEMA 4X Oxygen Analyzer 2.4.2 Performance Specifications Range: 5 to 100% Resolution: 0.1% Stability (24 hrs): +- 0.5% Linearity: +-0.2% Cross-sensitivity: +-0.2%, and gas mixture. Response time; 1s @350 ml/min flow and electronic filter setting 6. Alarms (4):... -
Page 9: Getting Started
3. Getting Started 3.1 Analyzer Installation 3.1.1 Mounting the Analyzer The O2iM enclosure is NEMA 4X rated for exposure to water and dust. Try to conform to the following guidelines when selecting a location for mounting. • Do not expose the analyzer to direct sunlight, which may increase the internal temperature above the specification limit. -
Page 10: Ma Analog Output
20 mA current output is a non-isolated active current source referenced to the TB2 Gnd terminal. The maximum output voltage is equal to the O2iM DC supply voltage minus 2 volts. For example, if the supply voltage is 24 volts then the maximum output voltage at 20 mA is 22 volts. -
Page 11: Alarm Relay
Oxigraf O2iM NEMA 4X Oxygen Analyzer Relay Normal Mode Channel Relay Mode On when limit and warning conditions specified by the Horn/Strobe setup Horn/Strobe are true. On when self test is good and On when a channel 1 alarm state is absorption line lock achieved. -
Page 12: Horn And Light
The light is a field replaceable 24 V incandescent bulb in a weatherproof housing. 3.1.9 Gas Sample Connection The Oxigraf O2iM oxygen analyzer is a diverting oxygen monitor with up to four multiplexed input ports. A water/dust barrier filter must be installed at the inlets. The standard inlet tubing comes with a replaceable PTFE hydrophobic filter for this purpose. -
Page 13: Operation
Oxigraf O2iM NEMA 4X Oxygen Analyzer 4. Operation 4.1 Understanding the User Interface The 12-key keypad and 32-character VFD display allow instrument configuration and readout of oxygen concentration. The keypad uses capacitive non-contact technology to provide touch sensing through the sealed enclosure. Key sensing works best by deliberate finger contact in the center of the key legend without bridging to other keys. -
Page 14: Setup Mode - Setup Key
Oxigraf O2iM NEMA 4X Oxygen Analyzer 4.3.1.1 Multipoint Scan Mode When the multipoint scan mode is enabled the gas sample applied to the cell is selected from one of four input ports by the gas sample multiplexer. The active channel may be incremented by pressing the O2 key or at a programmable frequency. -
Page 15: Gas Sampling - Flow Key
Oxigraf O2iM NEMA 4X Oxygen Analyzer calibration cycle. A cal gas with an O2 concentration equal to the cal point value should be flowing through the analyzer. 4.3.5 Gas Sampling - FLOW Key Press the FLOW key to display the measured sample flow rate and pump drive level. If the autocal feature is enabled, pressing the FLOW key again will turn on the low cal gas valve and display the cal gas flow rate and pump drive level. -
Page 16: Test Mode - Test Key
Simulated O2 by slewing value from 0 to 100% 4.3.8 Help Mode – HELP Key Press the HELP key to display the Oxigraf service phone number, and a second time to show the instrument model and serial number. 4.4 Calibration The calibration modes are used to calibrate the oxygen analyzer using a known oxygen concentration. -
Page 17: Autocalibration
Adjust the low cal gas regulator with a screwdriver to get the cal gas pump drive level equal to the sample mode drive level. d) If the O2iM application does not use the sample pump then adjust the regulator for a cal gas flow rate of 100 to 200 ml/min. -
Page 18: Connecting The Autocal Input To A Source
As an alternative to the use of a pressurized calibration gas as described in the previous section, the O2iM may be installed with the calibration input connected to a non-pressurized source. This would typically be a different room or area of the building. Tubing is from the calibration input is routed to... -
Page 19: Configuration Parameters
The O2 Measurement Mode Setup may be available depending on the factory configuration. XC mode is standard on the O2iM. Factory configuration determines if XC/LN mode choice is available. Press the UP or DOWN key to switch to the alternate mode, if so configured. XC mode offers the... -
Page 20: O2 Low Point Calibration Gas
Oxigraf O2iM NEMA 4X Oxygen Analyzer as N2O and CO2. The measurement noise level is higher than LN mode however, which gives accurate results with low noise for N2 – O2 mixtures. 5.6 O2 Low Point Calibration Gas The low O2 calibration gas setting specifies the concentration of oxygen for low point cal. Room air can be used as a cal gas (20.8% O2) but it should be dried to prevent errors due to dilution by water... -
Page 21: O2 Alarm Thresholds
Oxigraf O2iM NEMA 4X Oxygen Analyzer 5.15 O2 Alarm Thresholds The O2 Alarm Threshold parameter set consists of two pairs of high and low oxygen alarm thresholds. Alarm A will be asserted for an oxygen concentration less than the Low A threshold or greater than the High A threshold. -
Page 22: Relay Allocation
Oxigraf O2iM NEMA 4X Oxygen Analyzer 5.23 Relay Allocation The limit detector, warning, and system OK relays may be allocated to provide global status for all channels or to indicate individual channel alarm / warning conditions. The global setting (SysOK/Warn/A/B) activates the limit A and B relays when any channel triggers the A or B limit detector. -
Page 23: Alarm Acknowledge Time
The Keypad Lock parameter sets the password for unlocking the keypad for parameter modification. If the Keypad Lock is nonzero then the O2iM will be locked in O2 mode on power-up. Press the ENTER key, the one to 4 character keypad lock code, and the ENTER key again to unlock the keypad for normal operation. -
Page 24: Service
2-minute warm-up. Contact Oxigraf with any question or further problem. The Oxigraf phone number can be displayed on the unit by pressing the HELP key once. Pressing it a second time will display the firmware version and the unit serial number. -
Page 25: Warranty
Oxigraf warrants that the analyzer is free from defects of material and construction for a period of one (1) year. The liability of Oxigraf, if any, shall be limited solely to the replacement or repair of the analyzer at the option of Oxigraf and does not include shipping costs or other incidental or consequential damages. -
Page 26: Appendix A - Menu Structure
Oxigraf O2iM NEMA 4X Oxygen Analyzer Appendix A – Menu Structure Function Display Line 1 Display Line 2 Display O2 and current channel O2 Filter setpoint Number of multipoint scan channels (H) Scan time per channel (H) O2 Measurement mode XC !"#... -
Page 27: Appendix B - Terminal Board Diagrams
Oxigraf O2iM NEMA 4X Oxygen Analyzer Function Display Line 1 Display Line 2 Show alarm relay status Alarm Relays... Horn/Strobe: Off Alarm Relays... System OK: On Alarm Alarm Relays... Warning: Alarm Relays... Alarm A: On Alarm Relays... Alarm B: Off Step back through alarms Alarm Relays...
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