LESSON PLAN
Course:
Basic Breath Test Operator
Class Title:
Metrics
Effective Date:
April 21, 2014
1
COVER PAGE
TIME:
COURSE :
CLASS TITLE:
CLASS LEVEL:
OBJECTIVES:
60 Minutes
Basic Breath Test Operator
Metrics
Basic Recruit
See page 3
METHOD OF INSTRUCTION:
METHOD OF TESTING:
TRAINING AIDS:
Lecture/Facilitation
Written
Computer, Remote Control for
Computer, Screen, White Board,
Marker, PowerPoint Program,
Calculator, Visual Aids
REFERENCES:
See page 4
COMPLETED BY:
DATE:
REVISIONS BY:
DATE OF REVISIONS:
REVISIONS BY:
DATE OF REVISIONS:
Joe Gilliland
December 7, 2007
T. Blankenship
January 1, 2010
Danny Dailey
April 21, 2014
APPROVED BY (signature):
DATE APPROVED:
2
REFERENCES:
Bila, Bottorff, Merit and Ross. Mathematics for Health
Occupations, 1978, Winthrop Publishing, Inc.,
Cambridge, MA.
3
4
Objectives
LEC
1. With reference, as discussed in class identify
units of weight, volume and length using the
metric system.
2. Without reference, as discussed in class the
student will be able to explain the direct
relationship of volume and weight to the meter.
3. Without reference, as discussed in class the
student will be able to explain how the metric
system relates to breath alcohol testing.
4. With reference, as discussed in class the student
will be able to perform temperature conversions
of Fahrenheit to Centigrade and Centigrade to
Fahrenheit.
5
LEC
The purpose of this block of instruction is to familiarize
the student with an understanding of three basic metric
units of measurement within the metric system. These
units have a direct relationship to breath evidence and
instrumentation. The student will also become familiar
with temperature conversions of Fahrenheit and
Centigrade. This knowledge will be incorporated into
general terms and values outlined in lecture and
reference material throughout the breath testing
course.
6
LEC
The meter was devised by dividing the earth’s
quadrant (from equator to the North Pole) by ten
million equal lengths. The meter was one of those
equal lengths and it provided the basis for the other
unit of measurement to be studied.
7
Units of Metric Measurement
Liter:
Standard unit of measure for Volume. The liter is
slightly larger than a quart. One liter is equal to
1.06 quarts.
Gram:
Standard unit of measure for Weight. (About the
weight of a standard paper clip) The gram was
derived from the liter by taking one milliliter of pure
water at 4 degrees centigrade. The weight it carried
established the standard: the Gram. The gram is
very tiny in weight-.035 ounces. An easier reference for
this weight is the Kilogram, which equals 2.2 pounds.
8
LEC
Why use metrics? Because it is in our law, K.R.S
189A.005 defines alcohol concentration as:
●The number of Grams of alcohol per 210
Liters of breath…..or
●The number of Grams of alcohol per 100
milliliters of blood.
We need a basic understanding of metrics in order to
describe breath test evidence in a meaningful way.
During this block of training, we will work through the
fundamentals so the description of evidence written
into law will become applicable to certified breath test
operators.
9
LEC
AFQ
The above diagram parallels our mathematical
counting system. On the left we are multiplying by ten
with each step, on the right we are dividing by ten with
each step.
Therefore, one meter contains: (when dividing)
10 decimeters
100 centimeters
1000 millimeters
Or, when multiplying:
10 meters= one Dekameter
100 meters= one Hectometer
1000 meters= one Kilometer
10
LEC
37.5 dm = 3.75 m
.6 m = 600 mm
17.3 cm = 173 mm
16 Km = 16,000 m
125 cm = 1.25 m
11
LEC
Other
Micron: is 1 millionth of a meter. The micron is used in
measuring the path of light and sound. The Intoxilyzer
5000EN / 8000 use infrared light to measure the
alcohol content of a sample.
Unit abbreviations
Kilogram
Kg
Hectogram
Hg
Dekagram
Dg
Gram
g
decigram
dg
centigram
cg
milligram
mg
12
LEC
BrAC/BAC Readings
It’s a metric measure of weight (in Grams) of alcohol to
volume (Liters) of breath or blood (milliliters).
Example: .180 BrAC means: .18 Grams of alcohol
per 210 Liters of breath.
Example: .180 BAC means: .18 Grams of alcohol
per 100 milliliters of blood.
13
LEC
Temperature Conversion Equations
F (Fahrenheit)= (1.8 X C) + 32
Convert 37 degrees Celsius To Fahrenheit
F = (1.8 X 37) + 32
F = 66.6 + 32
F= 98.6 (Normal Body Temperature)
14
LEC
C (Centigrade) – F- 32 / 1.8
Convert 93.2 degrees F to Centigrade
C = 93.2 – 32 / 1.8
C = 61.2 / 1.8
C = 34 degrees Centigrade (temperature
exhaled breath/simulator solution)
of
When you are converting temperatures, you are comparing two
different scales. It is often easier to remember the numbers if
you know where they came from. The freezing point of water on
the Fahrenheit scale is 32 degrees, at Centigrade it is 0 degrees.
Therefore, in one equation you are adding 32 and in the other
you are subtracting 32. Also, every Centigrade degree is 1.8
times larger than every Fahrenheit degree. In one equation you
are multiplying by 1.8 and in the other you are dividing by 1.8.
15
LEC
(These will be discussed in more detail in a later block)
●The instrument (Intoxilyzer 5000EN) sample
chamber’s operating temperature is 46 degrees
Centigrade, +or – one degree.
● The size of the sample chamber is 81.4 ml or 81.4
cc (ml and cc are synonymous).
● The temperature of the simulator solution is 34
degree Centigrade
16
Questions?
LEC
AFQ
TIME: 90 MINUTES
17