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WARNING
!
all
Read
of the information in this booklet before using
Pocket CO.
Many factors can affect air quality. This instrument will give a
dependable indication of CO levels, but should not be considered
an all-inclusive monitor for overall air quality. Pocket CO is only
one tool for CO measurement or CO dosimetry for personal use.
Pocket CO's Self-Test checks most of its functionality, but does
not test the CO sensor, which can only be tested with actual
exposure to carbon monoxide. Monthly "bump" testing of the
Pocket CO with a source of carbon monoxide is recommended.
KWJ sells a CO bump test kit for this purpose.
Pocket CO is small and light enough to be transported in your
pocket. However, Pocket CO should not be operated while in your
pocket. To detect CO, Pocket CO must be well exposed to your
surrounding environment (e.g. on your key chain, attached to
your dashboard or uniform, or worn around your neck).
NOTICE
In the beginning of 2007, the manufacturer of Pocket CO, Transducer
Technology, Inc., was merged into KWJ Engineering Inc. The two
companies had been cooperating for two years, and now are combined as
one corporate entity, under the name of KWJ Engineering Inc., a company
that has been engaged in the manufacture of gas detection instruments
since 1993. Production, sales and financial matters are handled primarily
by the parent company, while research and new product development are
the focus of the former Transducer Technology, Inc., now known as
Transducer Technology Division.
Rev. 2.0

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  • Page 1 Technology, Inc., was merged into KWJ Engineering Inc. The two companies had been cooperating for two years, and now are combined as one corporate entity, under the name of KWJ Engineering Inc., a company that has been engaged in the manufacture of gas detection instruments since 1993.
  • Page 2: Table Of Contents

    INDEX 1. Introduction 2. Specifications 3. Using Your Pocket CO 3.1 Normal Operation 3.2 Turning Pocket CO Off 3.3 Using the Backlight 3.4 Viewing Dosimetry Information 3.5 Understanding Alarms 3.6 Understanding Dosimetry/TWA Warnings 9 3.7 Replacing the Battery 3.8 Using the Menu 3.9 Calibration 3.10 Additional Usage Information 4.
  • Page 3: Introduction

    1. Introduction Pocket CO Model 300 has been designed as a simple and effective tool to determine, measure, or record Carbon Monoxide (CO) levels in any environment. The instrument has been programmed based on guidelines for indoor and outdoor CO exposure from several organizations, including OSHA and ACGIH.
  • Page 4: Specifications

    2. Specifications Size: 2.66 x.1.40 x 0.61 inches (67.6 x 35.6mm x15.5 mm) Weight: < 1 ounce (28 grams) Range: 5-500 PPM CO Response time: < 90 seconds to 90% Operating 32-105 F, 0-40 C displayed; readings automatically temperature: compensated. Pressure effects: Reading decreases with decreasing pressure, down to 70% at 10,000 ft...
  • Page 5 Red LED Alarm Rear entry holes for gas (Do not block) Display with backlight Button Side entry holes for gas Buzzer (Do not block) Screw for battery compartment cover Rev. 2.0...
  • Page 6: Using Your Pocket Co

    3. Using Your Pocket CO 3.1 Normal Operation: The information below describes how to turn Pocket CO on for normal operation, with one of two possible detection periods: 12-Hour Detection: With Pocket CO off, quickly push and release the button. The display will show “12HR”. The instrument will perform a brief self-test, and then show the current CO reading (PPM).
  • Page 7: Using The Backlight

    3.3 Using the Backlight: During normal operation, quickly push and release the button once. The backlight will turn on for a short period of time. Please note that excessive use of the backlight will reduce Pocket CO’s battery life. 3.4 Viewing Dosimetry Information: When running in the 12-Hour Detection period, Pocket CO maintains CO dosimetry information.
  • Page 8: Understanding Alarms

    3.5 Understanding Alarms: Pocket CO is equipped with the following alarm mechanisms: • A loud, 82 dB beeper (at 24 inches). • A display backlight. • A bright, red LED on the top of the instrument. • A vibrator. Pocket CO is programmed to repeatedly pulse all of these alarms when the CO exposure reaches or exceeds certain limits.
  • Page 9 These are known as “instantaneous” alarms, since Pocket CO will alarm as soon as the level of CO reaches or exceeds these levels. The alarms at these levels are designed to protect you from the immediate health effects of carbon monoxide. Pay attention to your Pocket CO when it alarms, and vacate the area until the source of the CO can be found and addressed.
  • Page 10: Understanding Dosimetry/Twa Warnings

    3.6 Understanding Dosimetry and TWA Warnings: When run in the 12-Hour Detection period, Pocket CO keeps track of dosimetry information, which includes your total-exposure and time-weighted average exposure. Total-Exposure (TE) is a measure of the amount of CO you’ve been exposed to over a length of time, and is measured in ppm- hours.
  • Page 11 time. Hence, an additional exposure to a large amount of CO, but over a very short period of time (e.g. 1-2 minutes), would not largely affect the TWA calculated in the second example. The American Conference of Governmental Industrial Hygienists (ACGIH) has published a recommended limit of 25ppm for an 8- Hour TWA.
  • Page 12: Replacing The Battery

    3.7 Replacing the Battery: The lifetime of the battery in Pocket CO will vary depending on usage. With typical usage of 5 days per week, and minimal alarming, the battery should last up to 1 year. But if Pocket CO alarms often, or the backlight is used excessively, battery life will be reduced.
  • Page 13 1. Turn Pocket CO off. 2. Use coin to 3. Remove old Remove screw, and remove battery battery. Wait 10 put aside (don’t lose cover. Turn coin seconds before clockwise it!). . Battery inserting new one. cover will pop off. Check inside of battery cover for calibration due date.
  • Page 14: Using The Menu

    3.8 Using the Menu: Pocket CO has a menu that allows you to: 1. Enable / disable the vibrator. 2. Choose from 3 different buzzer sounds. 3. Enable / disable the low-concentration alarm (50 PPM). To access the menu with Pocket CO off, quickly push and release the button four times.
  • Page 15: Calibration

    3.9 Calibration: Like many CO detectors, Pocket CO uses an electrochemical sensor to detect carbon monoxide. The readings from this type of sensor can drift with environment and time, resulting in inaccurate measurements. Calibrating with a known concentration of carbon monoxide gas allows Pocket CO to compensate for this drift, and thus maintain good accuracy.
  • Page 16: Additional Usage Information

    0 ppm. Depending on the length of the exposure, this may take from minutes to days. If the reading does not return to 0 ppm within 5 days in a fresh-air environment, contact KWJ Engineering for further instructions. If Pocket CO must frequently be used in an environment with such vapors, it is recommended that it be stored in an air-tight container along with some activated carbon.
  • Page 17: Glossary Of Terms

    C (32 SNSR: Sensor may be malfunctioning, or recovering from exposure to very high levels of CO. If message does not go away after 1-2 hours, contact KWJ Engineering. ZERO: Apply zero gas to obtain a new zero for calibration. GAS: Apply 100-PPM CO gas for calibration.
  • Page 18: Care And Maintenance

    5. Care and Maintenance The Pocket CO is a high performance CO measurement device. To maintain best performance clean it with a cloth, lightly dampened with water. Never use soap, cleansers, alcohol, gasoline, paint thinner, or other solvents to clean the device. Do not submerge the device in water or any liquids.
  • Page 19: Contact Us

    6. Contact Us By Telephone: For technical or operational questions about Pocket CO, you may contact the Transducer Technology Division of KWJ Engineering directly at: (510) 791-0951. For other questions, or sales information, you may call our toll- free customer service line at (877) 794-4296.
  • Page 20: Warranty

    KWJ guarantees many years of use from your Pocket CO. We also offer a discounted replacement Pocket CO, should you damage your instrument such that it can no longer be used.
  • Page 21 8. CO Health Effects CO is a poisonous gas produced by the incomplete burning of carbon based fuels. When inhaled it deprives the blood stream of oxygen, suffocating its victim. CO can cause immediate health problems, and even death, in high concentrations. Regular exposure to low concentrations, such as at home or in the workplace, can cause long-term health problems.
  • Page 22 The table below is a CO PPM chart with possible effects on human health and references to standards. For complete standards, see referring links at the websites: http://www.detectcarbonmonoxide.com http://www.kwjengineering.com Level of CO Health Effects, and Other Information 0 PPM Normal, fresh air. 9 PPM Maximum allowable short-term exposure (ASHREA).

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