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A40B 锺谒萋椎酗

产品编号：3031213 更新时间：2020-08-15

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A40B 锺谒萋椎酗

The following table shows the 1-year absolute accuracy specification stated at k=2, approximately 95 % confidence for the calibrated value. The specifications include 1-year stability, temperature effects over TCal ± 1 °C, and the measurement uncertainty of the calibrated value.
Shunt Nominal Current:	Specification ± μA/A, TCal ±1 °C, ≤ 50 % RH^1,2,3,5
	DC	1 kHz	100 kHz
1 mA	20	55	150
10 mA	20	26	26
20 mA	20	26	26
50 mA	20	23	23
100 mA	20	24	24
200 mA	20	26	26
500 mA	21	27	28
1 A	21	27	31
2 A	21	27	48
5 A	21	31	71
10 A	26	37	92
20 A	26	43	113
50 A	32	55	144
100 A	35	65	174
1 The measured current is determined from: I = (V/R_calibrated) × (1 + (AC-DC_calibrated/1,000,000)); where AC-DC calibrated is expressed in ppm. 2 Above 1 kHz interpolate the specification (s_i) between frequencies f_upper and f_lower using: s_i = s_lower + (f_i – f_lower) × (s_upper – s_lower) ÷ (f_upper – f_lower) 3 Add 20 μA/A if relative humidity is outside specification limits. 4 1 mA specifications apply with the battery charger disconnected. 5 Specifications assume no loading effects due to the voltage-sensing device. See Output Voltage Measurement – Loading Effects in the operating information.

Maximum AC-DC Difference

Shunt Nominal Current:	Maximum AC-DC Difference (± ppm)^1,2
	1 kHz	100 kHz
1 mA³	53	150
10 mA	20	40
20 mA	18	30
50 mA	13	16
100 mA	14	27
200 mA	17	28
500 mA	17	21
1 A	17	23
2 A	17	44
5 A	23	69
10 A	28	98
20 A	37	150
50 A	47	180
100 A	60	300
1 Specifications indicate the maximum flatness deviation from dc, and include both measured AC-DC difference and the uncertainty of measurement. They are stated at k=2, approximately 95 % confidence. 2 Includes 1-year stability of the AC-DC difference. 3 Specifications for the 1 mA current shunt are for TCal ± 1 °C.

General Specifications

Dimensions (maximum)

Shunt Value:	1 mA to 2 A
Height:	70 mm (2.75 in)
Width:	70 mm (2.75 in)
Overall Length¹:	124 mm (4.9 in)
Shunt Value:	5 A to 20 A
Height:	130 mm (5 in)
Width:	130 mm (5 in)
Overall Length¹:	210 mm (8.25 in))
Shunt Value:	50 A and 100 A
Height:	200 mm (7.9 in)
Width:	200 mm (7.9 in)
Overall Length¹:	343 mm (13.5 in))
	¹ Includes input and output connectors; subject to change by component vendor.

Physical/mechanical parameters

Shunt Value:	1 mA to 20 A
Weight:	0.7 kg (1.6 lb)
Input Connector:	Type-N (female)
Output Connector:	Type-N (female)
Shunt Value:	50 A and 100 A
Weight:	3.4 kg (7.5 lb)
Input Connector:	Type-LC (female)
Output Connector:	Type-N (female)

Operating environment

Temperature:	13 °C to 33 °C
Calibration temperature (TCal) range:	18 °C to 28 °C
Humidity range for best specification ^1,2:	≤ 50 % RH
Altitude:	0 m to 3,000 m
	¹ Resistance stability is affected by humidity, but changes are reversible. ² If the shunts are calibrated outside this RH, stability specifications will be met as long as the shunts are stored and used at the same relative humidity ± 10 % RH.

Storage and transit environments (for models other than the 1 mA current shunt)

Temperature to avoid damage:	-20 °C to 140 °C
Temperature and humidity to maintain performance¹:	5 °C to 45 °C; 15 % to 80 % RH
Non-operating altitude:	0 m to 12,000 m
	¹ Storage at extremes of temperature or humidity will cause a temporary change of shunt resistance by up to ± 20 ppm. When subsequently stored or used within the limits of the operating environment, the shunts will recover to their original resistance value within 30 days.

Additional 1 mA current shunt specifications

Output resistance

8 mз

Maximum safe output current

11 mA (e.g., 1 V output into 90 з)

Maximum capacitive load

800 pF

Output voltage regulation

15 ppm/100 pF

Maximum output dc v offset

± 100 μV (typical ± 25 μV)

Typical error @ 1 MHz

< 2 %

Battery specifications

Battery size

AAA (44.5 mm x 10.5 mm)

Battery technology

Nickel-Metal Hydride (NiMH)

Number of batteries required

8 (in 2 groups of 4)

Nominal battery voltage

1.2 V (4.8 V per group of 4)

Typical battery capacity

800 mAh

Storage and transit environment to preserve the batteries

Less than 90 days:	-20 °C to 40 °C
Less than one year:	-20 °C to 30 °C
Charging time (from fully discharged):	100 minutes