Datasheet

Measuring Characteristics
Measuring Characteristics
Measuring Characteristics
Capacitance Characteristics
Temperature Characteristics
Frequency and Period
Measurement Method
Input Impedance
Input Protection
Capacitance Measurement
Measurement Method
Connection Type
Apply constant current into the capacitance, and measure the voltage changing rate.
2-wire
Measurement Considerations
Since small capacitance measurements are susceptible to the external noise, shielding inputs from
external noise pickup is critical for minimizing measurement errors.
Function
Capacitance
Range
[2]
2.000nF
20.00nF
200.0nF
2.000uF
20.00uF
200.0uF
2.000mF
20.00mF
100.0mF
Test Current
200nA
2uA
10uA
100uA
1mA
1mA
1mA
1mA
1mA
1 Year
T
CAL
℃
±5
℃
2 + 2.5
1 + 0.3
1 + 0.3
1 + 0.3
1 + 0.3
1 + 0.3
1 + 0.3
1 + 0.3
3 + 0.2
Temperature Coefcient
0
℃
to (T
CAL
℃
-5
℃
) (T
CAL
℃
+5
℃
) to 50
℃
0.05+0.05
0.05+0.01
0.01+0.01
0.01+0.01
0.01+0.01
0.01+0.01
0.01+0.01
0.01+0.01
0.05+0.02
Measurement Considerations
All frequency counters are susceptible to error when measuring low–voltage, low–frequency signals. Shielding inputs from external noise
pickup is critical for minimizing measurement errors.
Settling Time Considerations
Errors will occur when attempting to measure the frequency or period of an input following a dc offset voltage change. Make sure the RC
circuit of input terminal has been fully settled (about 1s) before accurate measurement.
Reciprocal-counting technique, AC-coupled input using the AC voltage function.
1 MΩ ± 2% in parallel with < 150 pF capacitance on any range
750 V rms on all ranges
Accuracy Specications: ± (% of reading + % of range)
[1][2]
Accuracy Specications
[1]
[1] Specications are for 90 minutes warm–up and using REL operation. Additional errors may be caused by non–lm capacitors.
[2] Specications are the 1% to 110% of range on 2nF range and 10% to 110% of range on all other ranges.
[1] Specications are for 90 minutes warm-up. Exclusive of sensor error.
[2] Specication is for 4WR sensor measurement or 2WR measurement using
REL operation.
Function
Temperature
Measurement Considerations
The built-in cold junction temperature tracks the temperature inside the banana jack. The change of the temperature in banana jack
might cause additional error. When using the built-in cold junction compensation, connect the sensor terminal of the thermocouple to
the banana jack and warm it up for more than 3 minutes to minimize the error.
Probe Type
RTD
[2]
(R0 is within 49 Ω and 2.1 kΩ)
Thermal Resistance
Thermocouple
[3]
Type
α = 0.00385
α = 0.00389
α = 0.00391
α = 0.00392
2.2 kΩ
3 kΩ
5 kΩ
10 kΩ
30 kΩ
B
E
J
K
N
R
S
T
Optimum Range
-200
℃
to 660
℃
-200
℃
to 660
℃
-200
℃
to 660
℃
-200
℃
to 660
℃
-40
℃
to 150
℃
-40
℃
to 150
℃
-40
℃
to 150
℃
-40
℃
to 150
℃
-40
℃
to 150
℃
0
℃
to 1820
℃
-270
℃
to 1000
℃
-210
℃
to 1200
℃
-270
℃
to 1372
℃
-270
℃
to 1300
℃
-270
℃
to 1768.1
℃
-270
℃
to 1768.1
℃
-270
℃
to 400
℃
1 Year
T
CAL
℃
± 5
℃
0.16
℃
0.17
℃
0.14
℃
0.15
℃
0.08
℃
0.08
℃
0.08
℃
0.08
℃
0.08
℃
0.76
℃
0.5
℃
0.5
℃
0.5
℃
0.5
℃
0.5
℃
0.6
℃
0.5
℃
Temperature Coefcient
0
℃
to (T
CAL
℃
-5
℃
)
(T
CAL
℃
+5
℃
) to 50
℃
0.01
℃
0.01
℃
0.01
℃
0.01
℃
0.002
℃
0.002
℃
0.002
℃
0.002
℃
0.002
℃
0.14
℃
0.02
℃
0.02
℃
0.03
℃
0.04
℃
0.09
℃
0.11
℃
0.03
℃
[3] Relative to cold junction temperature, accuracy is based on ITS-90. Built-in
cold junction temperature refers to the temperature inside the banana jack
and its accuracy is ± 2.5
℃
.