AC Ammeters
The Laboratory offers calibrations for ammeters rated from 100 μA to 20 A (up to 20 kHz) and from 100 £gA to 100 A (45 Hz to 60 Hz) using the Laboratory current calibrators.
The AC ammeter will normally be calibrated at 5 test currents for one range to establish the scale linearity. For multi-range ammeters, additional measurements will be made at full range for all the other ranges.
Linearity check for other ranges may be offered upon request.
Calibration charges
| Fee in HK$ | |
|---|---|
| Calibration of single range on AC ammeter, at one frequency. |
$1430 |
| Calibration of each additional range at full range on the same AC ammeter, at one frequency. | $160 |
| Additional linearity check at one frequency, per range. | $700 |
| Calibration at each additional frequency : 1. First range (5 test currents). 2. Each additional range (at full range). |
$700 $160 |
