Calibration of Tap Density Apparatus
Procedure :-
- Enter 250 tapings by pressing <1000/100> and after <10/1> key and adjust 00250.
- Press the <START> key to begin a run.
- Measure the number of Tap per minute using tachometer.
- Measure the time required to end the set Tap no. with the help of stopwatch.
- Enter 1250 tapings by pressing key and adjust 01250.
- Compare the observed Tap with the set tap.
- Acceptance Criteria:
| Set Tapping | Acceptance limit | |
| Tapping | Time | |
| 250 | ± 10 tapping | 60 ± 2 Seconds |
| 1250 | ± 75 tapping | 300 ± 10 Seconds |
SPEED CHECK
| Sr. No. | Set Tapings | Observed Tapings | Acceptance criteria |
| 1. | 250 |
|
Between 240 and 260 |
| 2. | 1250 |
|
Between 1175 and 1325 |
TAPINGS TIME CHECK
| Sr. No. | Set Tapings | Observed time in Second | Acceptance criteria in
Second |
| 1. | 250 |
|
Between 58 and 62 |
| 2. | 1250 |
|
Between 280 and 310 |
Remark: Instrument is working satisfactorily / not satisfactorily.
“End of Document”