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Summary of Contents for Sierra Monitor Corporation 55
- Page 1 INSTRUCTION MANUAL OXYGEN DEFICIENCY MONITOR (Model 55) T10008 Rev A1...
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Page 2: Table Of Contents
Introduction ... 1 Features... 2 Mechanical Description... 3 Alarms... 4 Operation ... 6 Calibration... 7 Sensor Replacement ... 8 Battery Replacement ... 10 Remote Sensor Option ... 11 10. Specifications... 13 11. Limited Warranty... 16 OXYGEN DEFICIENCY MONITOR TABLE OF CONTENTS PAGE 1... -
Page 3: Introduction
Introduction 1.1 The SMC Model 55 is a portable oxygen efficiency monitor for personnel in confined work places. It is self-contained, light weight and battery operated. It does not require any adjustments by the user other than routine calibrations. The monitor reads... -
Page 4: Features
Features 2.1 Features of the Model 55 include: • Temperature Stable • Barometric Pressure Insensitive • Large LCD digital display • High accuracy over temperature range 0-50 • Fast response -90% full scale in 10 seconds • Visual Alarm – LED provided on top of case •... -
Page 5: Mechanical Description
Mechanical Description 3.1 The Model 55 is housed in a rugged, high impact enclosre. The sliding ON/OFF power switch is located on the left side, the calibration potentiometer is accessible on the right side and the digital display is on the front surface. The top of the monitor and the digital display is on the front surface. -
Page 6: Alarms
Alarms 4.1 LOW OXYGEN CODITION: When the % oxygen falls below 19.5 (factory set) the digital display will be augmented by an audible alarm when using either internal or external sensor. The red LED will also truno on to provide visual indication. If an earphone is in use the alarm will only sound through the earphone. - Page 7 Figure 1 OXYGEN DEFICIENCY MONITOR PAGE 5...
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Page 8: Operation
Operation 5.1 Turn the ON/OFF switch to “ON” position. 5.2 Display reads percent oxygen. 5.3 If the alarm sounds the percentage oxygen has dropped below the present alarm lever (factory set to 19.5%). The alarm will turn off automatically when the oxygen concentration rises above the alarm level. -
Page 9: Calibration
Calibration NOTE: This instruction assumes that only the internal sensor is in use (external probe disconnected). See option instructions for calibration of external probe. 6.1 Turn the monitor “ON” and place it in an environment containing 20.9% oxygen and 79.1% nitrogen. This can be supplied from a calibration cylinder or can be open air if it is known to be clean. -
Page 10: Sensor Replacement
Sensor Replacement 7.1 Sensors for the Model 55 are provided in a sealed bag to prevent depletion of the electrolyte prior to required use. Sensor depletion begins when the bad seal is broken. 7.2 Remove the four screws from the rear of the monitor and open the case. - Page 11 FIGURE 2 Sensor Installation OXYGEN DEFICIENCY MONITOR PAGE 9...
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Page 12: Battery Replacement
8. Battery Replacement 8.1 When the “BAT” indicator is displayed approximately 8 hours of battery life remain. 8.2 Slide off the battery cover located on the lower rear of the unit. Remove the battery and disconnect. 8.3 Connect a new battery and carefully install it in the compartment taking care to stow the wires in a way in which they will not be crimped or cut by the cover. -
Page 13: Remote Sensor Option
Remote Sensor Option 9.1 Use the remote sensor option to check the confined environment before entry. 9.2 Plug the probe into the top of the monitor and loop the cable securely around the belt clip. When the remote probe is plugged in the internal sensor is disabled and the display reads the remote probe concentration. - Page 14 NOTICE The enclosed replacement sensor for your Model 55 Personal Oxygen Monitor is an enhanced version which will provide twice the operating life compared to sensors shipped prior to September, 2004. The enclosed sensor will operate for two years. To insure maximum life of your new sensor, please perform the following test: Install the new sensor.
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Page 15: Specifications
Specifications SENSOR transducer. DISPLAY ACCURACY RESPONSE RESOLUTION SENSOR LIFE PRESSURE SENSITIVITY TEMPERATURE OXYGEN DEFICIENCY MONITOR OXYMAX™ oxygen concentration 3 digit LCD, %0 in air from 0% to 25.0% with low battery indicator. + 3% of full scale from 10 to 50 + 4% of full scale from 0 to 50 10 seconds to 90% indication 0.1% Oxygen... - Page 16 CONTROLS CALIBRATION ADJUSTMENT Calibrate both internal and external ALARAMS CONNECTIONS BATTERY EARPHONE EXTERNAL SENSOR INTRINSIC SAFETY SIZE OXYGEN DEFICIENCY MONITOR ON/OFF switch. sensors against dry 0 calibration adjustments are with jeweler screwdriver. Audible: Factory set to alarm below 19.5% 0 Visual: LED lights when Audible Alarm sounds.
- Page 17 WEIGHT INTERFERING GASES CASE OXYGEN DEFICIENCY MONITOR 11 Oz. (0.3 Kg) Ozone, chlorine and other highly oxidizing gases will interfere to the extent of their oxygen equivalent. Highly corrosive atmosphere will cause premature failure. Three-piece, molded of high impact plastic. PAGE 15...
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Page 18: Limited Warranty
Limited Warranty SIERRA MONITOR CORPORATION warrants its products to be free from defects in workmanship or material under normal use and service for two years after date of shipment. SMC will repair or replace without charge any equipment found to be defective during the warranty period. Final determination of the nature and responsibility for defective or damaged equipment will be made by SMC personnel. - Page 19 NOTICE – New 2-year Oxygen Sensor Thank you for your order for a SPC21111 Oxygen Sensor Assembly for your Model 55 Personal Oxygen Monitor. In this shipment you will find the new Sierra Monitor 2-year Oxygen sensor for your Model 55 Personal Oxygen Monitor. This enhanced version will provide twice the operating life compared to sensors shipped prior to September, 2004.
- Page 20 Address: City/State/Zip: Phone: I am also interested in the following Sierra Monitor Products: Remote Probe for my Model 55 Oxygen Monitor Spare parts for Model 55 Sentry – Fixed installation monitor for Combustible, Oxygen, and Toxic Gases Other fixed installations...
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