Instruction/ maintenance manual of the product 55 Sierra Monitor Corporation
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INSTRUCTION MANUAL OXYGEN DEFICIENCY MONITOR (Model 55) T10008 Rev A1.
OXYGEN DEFICIENCY MONITOR PAGE 1 TABLE OF CONTENTS 1. Introduction .................................................................................................... 1 2. Features .....................................................................
OXYGEN DEFICIENCY MONITOR PAGE 1 1. Introduction 1.1 The SMC Model 55 is a portable oxygen efficiency monitor for personnel in confined work pla ces. It is self-contained, light weight and battery operat ed. It does not require any adjustments by the user other than routine cali brations.
OXYGEN DEFICIENCY MONITOR PAGE 2 2. Features 2.1 Features of the Model 55 include: • Temperature Stable • Barometric Pressure Insensitive • Large LCD digital display • High accuracy over tempe.
OXYGEN DEFICIENCY MONITOR PAGE 3 3. Mechanical Description 3.1 The Model 55 is housed i n a rugged, high impact en closre. The sliding ON/OFF power switch is located on the left side, the calibration potentiometer is acce ssible on the ri ght side and the digital display is on the fro nt surface.
OXYGEN DEFICIENCY MONITOR PAGE 4 4. Alarms 4.1 LOW OXYGE N CODITION: When the % oxygen fall s below 19.5 (factory set) the digital display will be augmented by an audi ble alarm when using either int ernal or external sensor. The red LE D will also truno on to provide visual indicat ion.
OXYGEN DEFICIENCY MONITOR PAGE 5 Figure 1.
OXYGEN DEFICIENCY MONITOR PAGE 6 5. Operation 5.1 Turn the ON/OFF switch to “ON” po sition. 5.2 Display reads percent oxygen. 5.3 If the alarm sounds the percentage oxygen has d ropped below the present alarm lever (factory se t to 19.5%). The alarm will turn off automatically when the oxygen concentration ri ses above the alarm level.
OXYGEN DEFICIENCY MONITOR PAGE 7 6. Calibration NOTE: This instruction assumes that o nly the internal sensor is in use (external probe disconnected). See opti on instructio ns for calibration of external probe. 6.1 Turn the monitor “ON” and place it in an enviro nment containing 20.
OXYGEN DEFICIENCY MONITOR PAGE 8 7. Sensor Replacement 7.1 Sensors for the Model 55 are provided in a seale d bag to prevent depletion of the electrolyte pr ior to required u se. Sensor depletion begins when the bad seal is br oke n. 7.2 Remove the four screws from the rear of the monitor and open the case.
OXYGEN DEFICIENCY MONITOR PAGE 9 FIGURE 2 Sensor Installation.
OXYGEN DEFICIENCY MONITOR PAGE 10 8. Battery Replacement 8.1 When the “BAT” indicator is displaye d approximately 8 hours of battery life remain. 8.2 Slide off the battery cover loca ted on the lower rear of the unit. Remove the battery and disconnect.
OXYGEN DEFICIENCY MONITOR PAGE 11 9. 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 cabl e securely around the belt clip.
OXYGEN DEFICIENCY MONITOR PAGE 12 10. NOTICE The enclosed replacement sens or for your Model 55 Pers onal Oxygen Monitor is an enhanced version which will provide twice the operating life compared to sens ors shipped prior to September, 2004. The enclosed sensor will operate for t wo years.
OXYGEN DEFICIENCY MONITOR PAGE 13 11. Specifications SENSOR OXYMAX™ oxygen concentration transducer. DISPLAY 3 digit LCD, %0 2 in air from 0% to 25.0% with low battery indicator. ACCURACY + 3% of full scale from 10 to 50 o C + 4% of full scale from 0 to 50 o C RESPONSE 10 seconds to 90% indication RESOLUTION 0.
OXYGEN DEFICIENCY MONITOR PAGE 14 CONTROLS ON/OFF switch. CALIBRATION ADJUSTMENT Calibrate both internal and external sensors against dry 0 2 /N 2. Both calibration adjustment s are with jeweler screwdriver. ALARAMS Audible: Factory set to alarm below 19.
OXYGEN DEFICIENCY MONITOR PAGE 15 WEIGHT 11 Oz. (0.3 Kg) INTERFERING GASES Ozone, chlorine and other highly oxidizing gases will interfere to the extent of their oxygen equivalent. Highly corrosive atmosphere will cause premature failure. CASE Three-piece, molded of high impact plastic.
OXYGEN DEFICIENCY MONITOR PAGE 16 12. Limited Warranty SIERRA MONITOR CORPORATION warrants its produ cts to be free from defects in workmanship or material under normal use and service for tw o years after date of shipment. SMC w ill repair or replace without charge any equipment found to be defective during the warranty period.
OXYGEN DEFICIENCY MONITOR PAGE 17 13. NOTICE – New 2-year Oxygen Sensor Thank you for your order for a SPC21111 Ox ygen Sensor Assembly for your Model 55 Pe rsonal Oxygen Monitor. In this shipment you will find the new Sierra Monitor 2-y ear Oxygen sensor for your Model 55 Personal Oxygen Monitor.
OXYGEN DEFICIENCY MONITOR PAGE 18 WARRANTY REGISTRATION SERIAL # Model 55 Oxygen Deficiency Monitor Name: Company: Address: City/State /Zip: Phone: I am also intere sted in the following Sierra M onit.
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