Pennsylvania Code › Title 67 - TRANSPORTATION › Part I - Department of Transportation › Subpart A - Vehicle Code Provisions › Article IV - Licensing › Chapter 77 - EQUIPMENT AND TRAINING REQUIRED FOR ADMINISTERING CHEMICAL TESTS; TEST PROCEDURES AND ACCURACY CERTIFICATION FOR BREATH TEST DEVICES › Subchapter B - PERMANENT REGULATIONS › Section 77.26 - Periodic calibration of Type A breath test equipment

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
Frequency.
Type A
						alcohol breath test equipment shall be calibrated annually within 1 year of
						using the breath test equipment to perform an actual alcohol breath
						test.
(b)
Procedures for
						calibration testing.
(1) Calibration
						testing a breath test device shall consist of conducting three separate series
						of five simulator tests. One of the series of tests shall use simulator
						solution designed to give a reading of .10%. One of the series of tests shall
						use simulator solution designed to give a reading of .05%. The last series of
						tests shall use simulator solution designed to give a reading above .10% which
						is a multiple of .05%.
(2) The
						results of the three separate series of tests shall be recorded on an
						appropriate test record.
(3) Test
						results shall be recorded to the third decimal place if the third decimal place
						is available.
(4) The breath test
						equipment does not pass the calibration procedure and shall be removed from
						service if one of the following occur:
(i) In
						the case of a device which can only be read to two digits, one or more of the
						five simulator tests in any one of the three separate series of tests yields a
						result which is one of the following:
(A) More
						than .01 below the reading that the simulator solution is designed to
						give.
(B) Greater than the reading
						that the simulator solution is designed to give.
(ii) In the case of a device which can be
						read to three digits, if, in any one of the three separate series of five
						simulator tests one of the following occurs:
(A) The average deviation derived by adding
						the absolute value of the differences between the results of the five tests and
						the constant value of the reading that the simulator solution is designed to
						give, and dividing the total of these absolute values by 5, exceeds
						.005.
(B) One or more of the five
						tests yields a reading which is more than .010 below the reading that the
						simulator solution is designed to give, or which is more than .009 above the
						reading that the simulator solution is designed to give.
(5) An example of a calibration
						testing procedure for a breath test device capable of being read to the third
						decimal place is as follows:
Constant value
Reading
Difference (absolute
									 value)
First
.10
.103
.003
Series
.10
.104
.004
.10
.097
.003
.10
.104
.004
.10
.099
.001
.015 = .003
5
Second
.05
.049
.001
Series
.05
.054
.004
.05
.048
.002
.05
.051
.001
.05
.052
.002
.010 = .002
5
Third
.15
.149
.001
Series
.15
.151
.001
.15
.148
.002
.15
.151
.001
.15
.160
.010
.015 = .003
5
First series-Average deviation = .003 and .003 does not
						  exceed .005 Second series-Average deviation = .002 and .002 does not exceed
						  .005 Third series-Average deviation = .003 and .003 does not exceed .005 but
						  the fifth test of the series yields a result which is more than .009 above the
						  constant value so the device fails the calibration testing.