PT Item – Digital Multimeter 4 1/2 Resolution (GW INSTEK)

PT Round – PTC/ELTC/DGMM/001

PT Item – GW Instek Make 4 1/2 Resolution Model GDM 541

Range & Resolution – Voltage – 220.00mV, 2.2000V, 22.000V, 220.00V, 1000.0V

Current – 220.00μA, 2200.0μA, 22.000mA, 220.00mA, 20.000A

Parameter – DC Current (270 μA to 5A) | DC Voltage (30mV to 1000V) | AC Current (270 μA to 5A) | AC Voltage (30mV to 1000V)

Participation Criteria – The participating Laboratory should have CMCs coarser to

for DC Voltage – Range 2 mV to 1000mV – 0.003%  | Range above 1 V to 1000 V – 0.003%

for DC Current  – Range up to 1000mA 0.007% | Range above 1A to 30 A – 0.04%

for AC Voltage – Range 2 mV to 220 mV – 0.05% | 0.2 V to 1000 V – 0.08%

for AC Current – Range 0.03 mA to 20000 – 0.19% | 0.2 A to 30 A – 0.01%

The above CMCs are based on master with resolution of 8 1/2 ; however the participating labs are required to evaluate UoMs for resolution 4 1/2 at 95% CI K=2

Measurement Points:

AC Voltage- 100 mV, 200 mV, 2V, 200V, 700 V at Frequency 50Hz

DC Voltage- 2mV, 200 mV, 2 V, 200 V, 1000 V

AC Current – 10mA, 100mA, 1A, 5A,10A at Frequency 50Hz

DC Current – 10mA, 100mA, 1A, 5A,10A

Delivery – Lab code will be delivered within 7 working days

Note: Participation criteria defined above, is based on present NABL practice of ILC, where CMC of reference lab should be superior (smaller measurement uncertainty) than the participant’s CMC. All Participant labs should ensure that the participation criteria have been met while applying for the PT.

The participant lab should not report estimated uncertainty, superior than accredited CMCs for that parameter for PT measurements. If Estimated uncertainty is coarser to accredited CMCs then Estimated uncertainty should be reported by the participant laboratory. 

It is mandatory for Participating Lab. to submit PT measurement results along with the following documents – –

1. Raw data sheet(s) – PDF format

2. Uncertainty Budget Sheet(s) – PDF format

    

   Method used for PT Item measurement should be provided in the Annexure 1 – Result Sheet.

Registration- Open