TH0480 Resistance Time Constant Standard
1.
Summary
TH
0480
is a
time
constant resistance standard, nominal resistance 1Ω, nominal output voltage 1V.
It has
good AC/DC difference and
phase displacement
index
. The
time constant calibration uncertainty
can reach 0.1ns.
Resistance time constant standard is a standardized method of measuring the time constant of a circuit that consists of only a resistor and a capacitor in series. The time constant is the amount of time it takes for the voltage across the capacitor to reach 63.2% of its final value when the capacitor is charging or discharging through the resistor. The resistance time constant standard is used to determine if an unknown capacitor has the correct capacitance value by comparing its time constant measurement to a known standard.
2.
F
eature
-
Typical Value of AC
/
DC Difference:
1
ppm
-
Typical Value of Phase
Displacement
:
1
μ
rad
-
Working Frequency:
DC,5
0
Hz
~ 100
kHz
-
Time constant: better than 5 ns
-
Maximum working current: 2 A
3.
Specification
|
F
requency
|
5
3
Hz
|
400
Hz
|
1
kHz
|
|
Maximum AC
/
DC difference
(
ppm
)
|
1
|
2
|
3
|
|
Phase Displacement (
μ
rad)
|
1
|
2
|
3
|
4.
General Specifications
|
Power Supply
|
--
|
|
Temperature Performance
|
Working temperature:
18 °C ~ 28 °C
;
Storage temperature:
0 °C ~ 45 °C;
|
|
Humidity Performance
|
Working humidity:(
20%
~
85%
)
R·H
,no condensation;
Storage Humidity:
≤
9
5% R·H
,no condensation
.
|
|
Weight
|
About
2.0 kg
|
|
Input
/
output Interface
|
Input
/
Output: N female
|
|
Maximum Dimensions
|
12
5
mm
(W)
× 85 mm
(D)
× 80 mm
(H)
|