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• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specification or transact the approval sheet for product specification before ordering.
!Note
Note
R50E12.pdf 02.9.5
SMpeDciOfipceantioTnyspeanadndTePsVtMM4eAth_oAd0s1 Series Specifications and Test Methods
The tests and measurements shall be conducted under the condition of 15 to 35°C of temperature, 25 to 75% of relative humidity and 86 to 106 kpa of
atmospheric pressure unless otherwise specified. In case when entertained a doubt in judgment obtained from results measured in accordance with the
above mentioned conditions, the tests and measurements shall be conducted under the condition of 25±2°C of temperature and, 45 to 55% of relative
humidity and 86 to 106 kpa of atmospheric pressure.
No.
Item
Test Methods
Measure total resistance between the resistance element and terminals (terminals #1 and #3) with the contact arm
positioned against a stop. The positioning of the contact arm and terminal shall be the same for subsequent total
resistance measurements on the same device.
Use the test voltage specified in Table-1 for total resistance measurements. This voltage shall be used whenever a
subsequent total resistance measurement is made.
Total resistance,
Nominal (ohm)
Maximum Test
Voltage (V)
1
Total Resistance
10VRV100
100FRV1k
1kFRV10k
10kFRV100k
100kFR
1.0
3.0
10.0
30.0
100.0
Table-1 Total resistance test voltage
Position the contact arm at the extreme counterclockwise limit of mechanical travel and measure the resistance
between the contact arm and the corresponding end terminal. Then, position the contact arm at the extreme clock-
wise limit of mechanical travel and measure the resistance between the contact arm and the corresponding end ter-
minal. During this test, take suitable precautions to ensure that the rated current of the resistance element is not
exceeded.
2
Residual Resistanc
Contact resistance variation shall be measured with the measuring circuit shown in below, or its equivalent. The
operating wiper shall be rotated in both directions through 90% of the actual effective-electrical travel for a total of 6
cycles.
The rate of rotation of the operating wiper shall be such that the wiper completes 1 countin determining whether or
not a contact resistance variation is observed at least twice in the same location. The test current shall follow the
value given in Table-2 unless otherwise limited by the power rating.
Oscilloscope
Standard total
Rx
3
1
Test Current
3
Contact Resistance
resistance R (ohm)
100VRF10k
10kVRF100k
100VR
2
Constant Current
Source not to
Exceed Rating of
Unit Being Tested
10mA Max.
1mA Max.
100µA Max.
Proofreaded
Resistence
AC
Amplifier
Table-2 Test current for CRV
Rx : Trimmer Potentiometer
Oscilloscope bandwidth :100Hz to 50kHz
Figure-1 CRV measuring circuit
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the poten-
tiometer shall be placed in a chamber at 40±2°C and 90 - 95% without loading for 500±12 hours.
The resistance value shall be measured after keeping the potentiometer in a room for 5±1/6 hours.
4
5
Humidity Exposure
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the poten-
tiometer shall be placed in a chamber at 70±2°C without loading for 500±12 hours. The resistance value shall be
measured after keeping the potentiometer in a room for 1.5±1/6 hours.
High Temperature
Exposure
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the poten-
tiometer shall be placed in a chamber at 40±2°C and 90 - 95% with loading the 1/2 rated voltage between #1 and #2
terminals, intermittently 1.5 hours ON and 0.5 hours OFF for 1000±12hours.
Humidity Load Life
Load Life
6
7
The resistance value shall be measured after keeping the potentiometer in a room for 5±1/6 hours.
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the poten-
tiometer shall be placed in a chamber at 70±2°C (50±2°C for PVZ) with loading the 1/2 rated voltage between #1
and #2 terminals, intermittently 1.5 hours ON and 0.5 hours OFF for 1000±12 hours. The resistance value shall be
measured after keeping the potentiometer in a room for 1.5±1/6 hours.
The wiper contact point shall be pre-setted at about 50% position of effective rotational angle. After that, the poten-
tiometer shall be subjected to Table-3,Table-4 temperature for 5 cycles. The resistance value shall be measured
after keeping the potentiometer in a room for 1.5±10 minutes.
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