Datasheet

10
Measurement accuracy
Resistance measurement accuracy
Conditions of guaranteed accuracy
•
Temperature & humidity: 23 ˚C ±5 ˚C, 80% rh or less (non-condensating)
• Guaranteed Accuracy Period: 1 year
• From 0°C to 18°C and from 28°C to 40°C, add (temperature coefficient ±[1/10 measurement accuracy] / °C).
RM3544/RM3544-01
Accuracy = ±(% rdg. + % f.s.)
(f.s. = calculated 30,000 dgt., where 0.010% f.s. = 3 dgt.)
Range
Max. measurement
display
*1,*2
FAST MED/SLOW
Measurement
Current
*3
Open-Circuit
Voltage
30mΩ 35.000 mΩ 0.030+0.080 0.030+0.070 300mA
5.5V
max.
300mΩ 350.00 mΩ 0.025+0.017 0.025+0.014 300mA
3Ω 3.500 0 Ω 0.025+0.017 0.025+0.014 30mA
30Ω 35.000 Ω 0.020+0.010 0.020+0.007 10mA
300Ω 350.00 Ω 0.020+0.010 0.020+0.007 1mA
3kΩ 3.500 0 kΩ 0.020+0.010 0.020+0.007 1mA
30kΩ 35.000 kΩ 0.020+0.010 0.020+0.007 100μA
300kΩ 350.00 kΩ 0.040+0.010 0.040+0.007 5μA
3MΩ 3.500 0 MΩ 0.200+0.010 0.200+0.007 500nA
*1 For negative values, to -10% f.s.
*2 The maximum display range is 99,999dgt.
*3 Measurement current accuracy is ±5%.
RM3548
Accuracy = ±(% rdg. + % f.s.)
(f.s. = calculated 30,000 dgt., where 0.010% f.s. = 3 dgt.)
Range
Max. measurement
display
*4,*5
Accuracy
*6
Measurement
Current
*7
Open-Circuit
Voltage
3mΩ 3.500 0 mΩ 0.100 + 0.200 (0.100 + 0.020)
1A
5.5V
max.
30mΩ 35.000 mΩ 0.100 + 0.020 (0.100 + 0.010)
300mΩ 350.00 mΩ
0.100 + 0.010 (0.100 + 0.010) 300mA
0.020 + 0.020 (0.020 + 0.010) 100mA
3Ω 3.500 0 Ω 0.020 + 0.007 (0.020 + 0.007) 100mA
30Ω 35.000 Ω 0.020 + 0.007 (0.020 + 0.007) 10mA
300Ω 350.00 Ω 0.020 + 0.007 (0.020 + 0.007)
1mA
3kΩ 3.500 0 kΩ 0.020 + 0.007
30kΩ 35.000 kΩ 0.020 + 0.007 100μA
300kΩ 350.00 kΩ 0.040 + 0.007 5μA
3MΩ 3.500 0 MΩ 0.200 + 0.007 500nA
*4 For negative values, to -10% f.s.
*5 The maximum display range is the same as the maximum measurement range.
*6 Measurement accuracy values assume offset voltage correction (OVC) is ON.
*7 Measurement current accuracy is ±5%.
( Example) 0.020 + 0.007 ....... 0.020 % rdg. + 0.007 % f.s.
( Example ) 0.020 + 0.007 ....... 0.020 % rdg. + 0.007 % f.s.
* During temperature correction, the value calculated below is added to the rdg. error for resistance measurement accuracy:
t0 : Reference temperature. [ºC]
t : Ambient temperature. [ºC]
Δ t : Temperature. measurement accuracy
α t0 : Temperature. coefficient at t0 is [1/ºC]
-α t0 Δ t
1
+ α t0 × (t + Δ t- t0)
×100
[%]
Temperature measurement accuracy
• Temperature Sensor Z2001 (for RM3544/RM3544-01)
• Temperature Sensor Z2002 (for RM3548)
Range of guaranteed accuracy
-10.0 to 99.9 ºC
Display refresh rate
Approx. 2 s
Guaranteed accuracy period
1 year
• Temperature Sensor Z2001 and RM3544/RM3544-01 combined accuracy
• Temperature Sensor Z2002 and RM3548 combined accuracy
Temperature Accuracy
-10.0 ºC to 9.9 ºC ± (0.55 + 0.009 × |t-10| ) ºC
10.0 ºC to 30.0 ºC ± 0.50 ºC
30.1 ºC to 59.9 ºC ± (0.55 + 0.012 × |t-30| ) ºC
60.0 ºC to 99.9 ºC ± (0.92 + 0.021 × |t-60| ) ºC
Standalone instrument accuracy:
± 0.2 ºC
t:
Temperature measurement values [ºC]