Kane-May SGA91A User manual

TABLE OF CONTENTS
Introduction…………………………………………………………………... 2
Features…………………………………………………………………….....2
Safety Rules…………………………………………………………………..3
Safety Warning……………………………………………………………….3
Safety Tips……………………………………………………………………3
Checks and Zeroing…………………………………………………………..4
Using the SGA……………………………………………………………...5-6
Probe Connection and Uses……………………………………………...5
Taking Measurements……………………………………………………6
Additional Features and Information……………………………………….7-8
Using the Backlight………………………………………………………7
Battery Indicator and Replacing Batteries……………………………….7
Particle Filter Replacement………………………………………………8
Electromagnetic Compatibility…………………………………………..8
Specifications…………………………………………………………………9
Facts About Carbon Monoxide………………………………………………10
Product Application………………………………………………………….11
Electromagnetic Compatibility………………………………………………12
Warranty……………………………………………………………………..13

INTRODUCTION
The Kane-May SGA91A Single Gas Analyzer is a portable, battery powered, toxic gas monitoring system.
Applications of the SGA91A are two fold. The basic instrument and probe allow for 'sniffing' around hot water
heaters, boiler and furnace flues and general areas where higher than normal levels of toxic gases are suspected.
The measurement of toxic gas levels in flues can be made.
FEATURES
•Rugged instrument casing.
•Continuously updating display with switchable backlight.
•Fast response electrochemical sensor.
•Simple probe connector.
•Standard probe for 'sniffing' with an in-line filter for use in boiler and furnace flues.
Note: The recommended maximum continuous sampling time direct from a flue is limited to
30 minutes – providing there is no water build up in the tubing (see Page 4). For optimum
sensor life, a fresh air purge of 10 minutes or more should follow.
SAFETY RULES

Before using this meter, read all safety information carefully. In this manual, the word
"WARNING" is used to indicate conditions or actions that may pose physical hazards to the
user. The word "CAUTION" is used to indicate conditions or actions that may damage this
instrument.
SAFETY WARNING
The Kane-May SGA91A is designed to sample a gas that is hazardous, even at relatively low concentrations.
SAFETY TIPS
The equipment and sampling proceedures described in this manual should only be undertaken by competent
trained professionals who know the hazards associated with their trade. To ensure safe and appropriate use,
please observe the following safety guidelines.
The checklist is for guidance only and its applicability must be reviewed in the light of local
circumstances and regulations.
•Ensure the calibration of the instrument is regularly checked. Annual calibration is
recommended by an approved service center.
•Always re-zero the instrument where you are sure the ambient level of the gas being
sampled is extremely low.
•Always replace flue access cover, and check to ensure it is properly sealed.
•When sampling from a flue, always ensure the probe is sealed, otherwise ambient air may
be drawn in and an erroneous sample taken.
•If sampling very high draught flues, ensure the pump draw is sufficient to overcome the
high draught.
•Do not operate the instrument outside its rated specifications.
•Do not use the instrument when low battery indication is displayed or it may give false
readings and be suspect to errors.
•For maximum sensor life, ensure condensation does not enter the instrument. If moisture
builds up in the sampling hose, stop testing and dry out the hose.
Note: The insrument is designed for sampling very hot flue gases for short periods only.
•Any condensate may be acidic, so do not allow it to touch your skin. If condensate
touches skin, rinse thoroughly with cold water and seek medical attention.
•If moisture droplets appear at the base of the instrument gas exhaust outlet, disconnect the
sampling hose at the top of the instrument and allow ambient air to be sucked through
until moisture disappears. Wipe off any droplets with a clean rag and dispose of rag
immediately.
CHECKS AND ZEROING
•Insure the batteries are correctly inserted as detailed on Page 7.
•Check the probe filter and replace if necessary as shown on Page 8.

•Ensure there is no water present in the probe tubing (especially between the instrument
connector and the filter. Drain any water from the tubing and allow to dry before use.
•Turn the POWER switch to ZERO and STANDBY. Allow the display to settle (this will
typically take two minutes.)
•Once the display has settled as above, move the ZERO ADJUST until the display shows
000 + 1 ppm. The zero adjust control is located at the top of the instrument on the panel
where the probe attachment is located.
Note: Zeroing must be performed in fresh air, remove from any flue or toxic area.
•When conducting a series of measurements, leave the instrument switched to ZERO and
STANDBY until complete. (See next section Taking Measurements for methods of
sampling.)
USING THE SGA91A
Probe Connection and Uses
Attach the probe to the connector on the top of the instrument.

•The standard probe is suitable for use in general applications, confined or cramped spaces,
room air analysis, grilles, diffusers and furnace heat exchangers emissions analysis.
Note: Do not insert the flexible tubing into a flue or furnace.
•The probe is also used for boiler, furnace and hot water heater emission analysis.
CAUTION
The probe handle may become hot if left in the flue for long periods, carefully remove and allow to cool.
Note: If condensation is observed within the clear hose, do not allow build up to a point
where it would enter the gas inlet connector of the instrument. Disconnect, drain and allow to
dry.
USING THE SGA91A (CONT.)
Taking Measurements
•Ensure the instrument has been correctly zeroed (see page 4) and the POWER switch is on
ZERO and STANDBY.
•Place the probe in the space required to measure gas. Turn the POWER switch ON. This
will activate the pump allowing gas to be drawn into the instrument.

•Allow the display to stabilize and take the reading as indicated below.
Gas reading 123
•The LCD shows the level of the gas concentration in parts per million (ppm). The display
above shows a reading of 123 ppm.
•If the gas concentration exceeds 1999 ppm, the display will show a '1' as indicated below.
Over-range reading 1
•To clear this condition, the instrument should be vented in fresh air until the display
reading returns to zero. If the display does not return to zero (+2 ppm), but stabilizes at a
higher reading, perform the zeroing proceedure (see page 4).
•Once the measurement is taken, remove the probe from the space. Leave the instrument
ON to allow it to clear any gas taken in the sample. Allow the display to settle to normal.
•Return POWER switch to ZERO and STANDBY to prolong battery life.
•Repeat this process for additional readings.
•Before switching the unit off, purge with fresh air for two minutes.
ADDITIONAL FEATURES AND INFORMATION
Using the Backlight
The backlight can be used at any time simply by moving the BACKLIGHT switch to ON.
Note: Do not use the backlight unless necessary, because this will considerably reduce the
battery's life.
Battery Indicator and Changing Batteries
If the BAT symbol appears on the display (as shown below), the batteries should be replaced as soon as possible.
The instrument will still function, but (the readings may be inaccurate.)

Low battery indication. BAT
To change the batteries, remove the cover located on the back of the instrument. Install four 'AA' size batteries as
illustrated below, and ensure correct polarity. Alkaline batteries are recommended.
Battery compartment.
Particle Filter Replacement
The in-line filter in the probe's tubing prevents excess dirt and water vapor from reaching the instrument. If it
appears wet or dirty replace with recommended part (Filter AF10).
Note:When using the SGA91A to measure carbon monoxide in flue gases where the fuel is
heavy oil or coal, it is recommended that the SF11 sulphur filter is used in place of the AF10.
This will prevent the early depletion of the sensor's integral sulphur filter and prolong the
sensors life.
•Remove the tubes from both ends of the filter.
•Replace with new filter – do not use any lubricant and ensure arrow points towards the
instrument.
ADDITIONAL FEATURES AND INFORMATION (CONT.)
Electromagnetic Compatibility
The European Council Directive 89/336/EEC requires that electronic equipment does not generate
electromagnetic disturbances that exceed defined levels and has an adequate level of immunity to enable it to be
operated as intended. The specific standards applicable to this product are detailed in the back appendices.
Since there are many electrical products in use that pre-date this Directive and may emit
electromagnetic radiation in excess of the standards defined in the Directive there may be
occasions where it would be appropriate to check the analyzer prior to use.
The following proceedure should be used to check the analyzer:

•Go through the normal start up sequence in the location where the equipment is to be
used. Switch on all localized electrical equipment that might be capable of causing
interference.
•Check all readings are normal. (A level of disturbance in the readings is acceptable). If not
adjust the position of the instrument to minimize interference or switch off, if possible, the
offending equipment for the duration of the test.
•At the time this manual was written, there was no field based situation where such
interference has ever occurred. This precautionary advice is only given to satisfy the
requirements of the Directive.
SPECIFICATIONS
Kane-May SGA91A Carbon Monoxide Single Gas Analyzer
Range (ppm): 0 – 1999 ppm
Accuracy: 5% of reading
Battery Type: Four (4) AA cells (Alkaline preferred)
Battery Life: 6 hours on Alkaline batteries
(Continuous use without blacklight)
Sensor Type: Electrochemical cell type
Sensor Life: 2 years
Display: 3-1/2 digit LCD, 1" high digits
Zero control: Situated on the top of the instrument
Low battery: Automatically indicated on LCD
Operating Temp: +32 to +105°F (0 to40°C)
Operating RH: 10 to 90% non condensing

Response Time: (90%) Typically 30 seconds
Gas Flow Rate: Approx. 40 cu. inches/min.(0.7 litres/min.) @ S.T.P
Gas Inlet: Via probe connector on case top
Case Details: Rugged case
Three position power switch – on/standby/off
Two position backlight switch – on/off
Probe Specification:
•¼" (6 mm) stainless steel shaft with quick fit coupling.
•Particle filter Part No. AF10.
•Approximately 9' clear polyurethane tubing.
•Quick release instrument coupling.
•Maximum allowable probe temperature + 1100°F (600°C).
CAUTION
Do not allow handle to become too hot.
FACTS ABOUT CARBON MONOXIDE
Carbon Monoxide (CO) is a colorless and odorless toxic gas that is a product of incomplete combustion. When
CO is introduced to the bloodstream through the lungs, it is accepted in place of oxygen at a rate of 300:1 and
literally suffocates its victim. Since CO is an accumulative and direct reacting toxin, it can be dangerous even at
low levels over longer periods of time. The harmful effects of CO inhalation depends on the following factors:
1. Concentration of CO in the air.
2. Length of time exposed to CO gas.
3. The health, age, sex and size of the individual being exposed.
The following chart shows the maximum allowable exposure limits and symptons developed
for CO inhalation.
CONCENTRATION
OF CO IN AIR: INHALATION TIMES AND TOXIC SYMPTOMS:
9 ppm The maximum allowable concentration for short term
exposure in a living area according to ASHRAE.

35 ppm The maximum allowable concentration for contiuous
exposure in an eight hour period, according to federal law.
200 ppm∗Maximum concentration allowable at any time according to
OSHA. Slight headaches, fatigue, dizziness, nausea after 2-
3 hours.
400 ppm Frontal headaches within 1-2 hours, life threatening after 3
hours. Maximum allowable limit in flue gas according to
EPA and AGA.
800 ppm Dizziness, nausea and convulsions within 45 minutes.
Unconsciousness within 2 hours. Death within 2-3 hours.
1600 ppm Headache, dizziness and nausea within 20 minutes. Death
in 1 hour.
3200 ppm Headache, dizziness and nausea within 5-10 minutes. Death
within 30 minutes.
6400 ppm Headache, dizziness and nausea within 1-3 minutes. Death
within 10-15 minutes.
12,800 ppm Death within 1-3 minutes.
∗Exposure to this concentration and higher, the effects can vary depending on size,
age, sex and health. UEI and Kane-May are not liable for the complete accuracy of
this information.
Copyright © 1998 Universal Enterprises, Inc.
PRODUCT APPLICATIONS
•Residential and commercial market ambient air monitoring.
•Source investigation in areas where CO monitors have alarmed.
•Part of an indoor air quality (IAQ) service.
•Flue testing in residential and small commercial boilers.
•Safety checks within furnace.
Note: The SGA19A Kit alone is not a discernible test for cracks in heat exchangers. Carbon
Monoxide detected within the furnace can be caused by a number of factors including poor
burner condition, flue blockage, negative pressure within the home, poor fuel quality and
cracked heat exchangers.
North America: Use the American Gas Association (AGA) approved method when testing
for cracks in heat exchangers.