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?
✓ ~~~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
✓ ~~~-20° C to 50° C
-4° F to 122° F
Who would amend NCWM for proposed changes to electric watt hour meter
requirements?
✓ ~~~Committee on Specifications and Tolerances
What is the purpose of CCR section 4000 in H44
✓ ~~~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
✓ ~~~the internal mechanism cannot be accessed without destroying a seal
What is the applied test load for a full load test
✓ ~~~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
✓ ~~~c. 1 cup
What is the draft size of a 5/8 inch utility water meter?
✓ ~~~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?
✓ ~~~1500 gpm x 0.20= 300 gpm
Answer= 300 gpm
The minimum discharge rate for wholesale LPG shall not exceed
✓ ~~~20 % of the marked maximum discharge rate
The minimum discharge rate for stationary retail LPG shall not exceed
✓ ~~~5 gpm
What are the possible units for carbon dioxide liquid measuring devices.
✓ ~~~LB or KG
What is the value o f the smallest unit for small delivery carbon dioxide liquid
measuring devices
, ✓ ~~~1 lb or 1 kg
What are the units for cryogenic liquid measuring devices
✓ ~~~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
✓ ~~~HB 44
During LPG testing when do you take temperature readings at the meter
✓ ~~~at 30% and 70% prover capacity
During LPG testing when do you take temperature readings at the prover
✓ ~~~at the end
When do you start the 30 sec timer when draining LPG provers
✓ ~~~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?
✓ ~~~Domestic cold water meters
What are the inserts in Ch. 1 of the field reference manual that are boxed, outlined
and shaded?
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?
✓ ~~~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
✓ ~~~-20° C to 50° C
-4° F to 122° F
Who would amend NCWM for proposed changes to electric watt hour meter
requirements?
✓ ~~~Committee on Specifications and Tolerances
What is the purpose of CCR section 4000 in H44
✓ ~~~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
✓ ~~~the internal mechanism cannot be accessed without destroying a seal
What is the applied test load for a full load test
✓ ~~~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
✓ ~~~c. 1 cup
What is the draft size of a 5/8 inch utility water meter?
✓ ~~~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?
✓ ~~~1500 gpm x 0.20= 300 gpm
Answer= 300 gpm
The minimum discharge rate for wholesale LPG shall not exceed
✓ ~~~20 % of the marked maximum discharge rate
The minimum discharge rate for stationary retail LPG shall not exceed
✓ ~~~5 gpm
What are the possible units for carbon dioxide liquid measuring devices.
✓ ~~~LB or KG
What is the value o f the smallest unit for small delivery carbon dioxide liquid
measuring devices
, ✓ ~~~1 lb or 1 kg
What are the units for cryogenic liquid measuring devices
✓ ~~~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
✓ ~~~HB 44
During LPG testing when do you take temperature readings at the meter
✓ ~~~at 30% and 70% prover capacity
During LPG testing when do you take temperature readings at the prover
✓ ~~~at the end
When do you start the 30 sec timer when draining LPG provers
✓ ~~~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?
✓ ~~~Domestic cold water meters
What are the inserts in Ch. 1 of the field reference manual that are boxed, outlined
and shaded?
