CDFA Measurement Verification Practice
Questions and Answers
When is a service agent not required to notify the sealer of an adjustment to a device according to B&P
Code Section 12515? - Answer-When the adjustment is only for the purpose of maintaining the device
in a zero balance condition
What is the temperature range of electric metering components if not stated on the device - Answer--
20° C to 50° C
-4° F to 122° F
Who would amend NCWM for proposed changes to electric watt hour meter requirements? - Answer-
Committee on Specifications and Tolerances
What is the purpose of CCR section 4000 in H44 - Answer-Commercial weighting and measuring devices
shall conform to the latest requirements set forth in the National Institute of Standards and Technology
Handbook 44
The components of an electric meter system shall be designed so that - Answer-the internal mechanism
cannot be accessed without destroying a seal
What is the applied test load for a full load test - Answer-the marked test amperage (TA)
,Which are not units of a rigid liquid measure?
a. 1 gill b. 1 1/2 gal c. 1 cup d. 1 liter - Answer-c. 1 cup
What is the draft size of a 5/8 inch utility water meter? - Answer-50 gal
If conducting slow flow test on a loading rack meter with maximum marked discharge of 1500 gpm and
minimum marked discharge of 300 gpm, the product is diesel fuel, and the maximum discharge rate that
can be developed during the normal test is 1000 gpm, then the special test must be conducted at? -
Answer-1500 gpm x 0.20= 300 gpm
Answer= 300 gpm
The minimum discharge rate for wholesale LPG shall not exceed - Answer-20 % of the marked maximum
discharge rate
The minimum discharge rate for stationary retail LPG shall not exceed - Answer-5 gpm
What are the possible units for carbon dioxide liquid measuring devices. - Answer-LB or KG
What is the value o f the smallest unit for small delivery carbon dioxide liquid measuring devices -
Answer-1 lb or 1 kg
What are the units for cryogenic liquid measuring devices - Answer-kg or lb, liters or gal at normal
boiling point
AND
m^3 or ft ^3 at normal T and P (70° F and 101° kPa)
Which deals with putting devices into service - Answer-HB 44
, During LPG testing when do you take temperature readings at the meter - Answer-at 30% and 70%
prover capacity
During LPG testing when do you take temperature readings at the prover - Answer-at the end
When do you start the 30 sec timer when draining LPG provers - Answer-When the pump changes rpm
on dry bottom provers and when liquid reaches the bottom of the sight glass in wet bottom provers
The EPO does not include standard testing of what? - Answer-Domestic cold water meters
What are the inserts in Ch. 1 of the field reference manual that are boxed, outlined and shaded? -
Answer-They are applicable to the section they are inserted into but not an HB 44 requirement
When testing gravimetrically it is important to know - Answer-Density and coefficient of expansion
When first connect prover to LPG meter there is 10 psi difference in pressure between the meter and
prover. When begin testing the difference increases to 25 psi. What is done? (DOUBLE CHECK THIS) -
Answer-stop testing
Any digital money-value indication and any recorded money value on a computing-type device shall be
in agreement - Answer-to within +/- 1 cent
Technical term for circuit breaker - Answer-Thermal Overload Protector
Electric meter should accurately measure - Answer-5-100% of service capacity
Questions and Answers
When is a service agent not required to notify the sealer of an adjustment to a device according to B&P
Code Section 12515? - Answer-When the adjustment is only for the purpose of maintaining the device
in a zero balance condition
What is the temperature range of electric metering components if not stated on the device - Answer--
20° C to 50° C
-4° F to 122° F
Who would amend NCWM for proposed changes to electric watt hour meter requirements? - Answer-
Committee on Specifications and Tolerances
What is the purpose of CCR section 4000 in H44 - Answer-Commercial weighting and measuring devices
shall conform to the latest requirements set forth in the National Institute of Standards and Technology
Handbook 44
The components of an electric meter system shall be designed so that - Answer-the internal mechanism
cannot be accessed without destroying a seal
What is the applied test load for a full load test - Answer-the marked test amperage (TA)
,Which are not units of a rigid liquid measure?
a. 1 gill b. 1 1/2 gal c. 1 cup d. 1 liter - Answer-c. 1 cup
What is the draft size of a 5/8 inch utility water meter? - Answer-50 gal
If conducting slow flow test on a loading rack meter with maximum marked discharge of 1500 gpm and
minimum marked discharge of 300 gpm, the product is diesel fuel, and the maximum discharge rate that
can be developed during the normal test is 1000 gpm, then the special test must be conducted at? -
Answer-1500 gpm x 0.20= 300 gpm
Answer= 300 gpm
The minimum discharge rate for wholesale LPG shall not exceed - Answer-20 % of the marked maximum
discharge rate
The minimum discharge rate for stationary retail LPG shall not exceed - Answer-5 gpm
What are the possible units for carbon dioxide liquid measuring devices. - Answer-LB or KG
What is the value o f the smallest unit for small delivery carbon dioxide liquid measuring devices -
Answer-1 lb or 1 kg
What are the units for cryogenic liquid measuring devices - Answer-kg or lb, liters or gal at normal
boiling point
AND
m^3 or ft ^3 at normal T and P (70° F and 101° kPa)
Which deals with putting devices into service - Answer-HB 44
, During LPG testing when do you take temperature readings at the meter - Answer-at 30% and 70%
prover capacity
During LPG testing when do you take temperature readings at the prover - Answer-at the end
When do you start the 30 sec timer when draining LPG provers - Answer-When the pump changes rpm
on dry bottom provers and when liquid reaches the bottom of the sight glass in wet bottom provers
The EPO does not include standard testing of what? - Answer-Domestic cold water meters
What are the inserts in Ch. 1 of the field reference manual that are boxed, outlined and shaded? -
Answer-They are applicable to the section they are inserted into but not an HB 44 requirement
When testing gravimetrically it is important to know - Answer-Density and coefficient of expansion
When first connect prover to LPG meter there is 10 psi difference in pressure between the meter and
prover. When begin testing the difference increases to 25 psi. What is done? (DOUBLE CHECK THIS) -
Answer-stop testing
Any digital money-value indication and any recorded money value on a computing-type device shall be
in agreement - Answer-to within +/- 1 cent
Technical term for circuit breaker - Answer-Thermal Overload Protector
Electric meter should accurately measure - Answer-5-100% of service capacity
