Certificate of National Institute of Technology and Evaluation

Kyowa's Standard Instruments Office is registered as an accredited calibration laboratory in the Force/Electricity (Direct Current & Low Frequency) field.

JCSS (Japan Calibration Service System) was established to assure traceability of measurement according to provisions of Measurement Law. National Institute of Technology and Evaluation examines at the International Accreditation Center (IAJapan) whether or not an applicant calibration laboratory has the technical capabilities and traceability of measurement in conformity with the international standard ISO/IEC 17025 for calibration.

Permanent Laboratory Calibration

General Field of Calibration : Force

Date of Initial Accreditation of the Field : 2011-05-02
Permanent Laboratory/On-site Calibration : Permanent Laboratory

Calibration Procedures# and Type of Instruments/Materials to be calibrated Range CMC
(Level of Confidence Approximately 95 %)
Force-proving Instruments According to JIS B 7728 Compression From 100 N up to 2 kN 0.012 %
From 500 N up to 20 kN 0.011 %
From 5 kN up to 500 kN 0.022 %
Tension From 100 N up to 2 kN 0.012 %
From 500 N up to 20 kN 0.014 %
From 5 kN up to 500 kN 0.028 %

#All Calibration Procedures are in-house procedures developed by this laboratory

General Field of Calibration: Electricity ( Direct Current & Low Frequency)

Date of Initial Accreditation of the Field: 2014-11-13
Permanent Laboratory/On-site Calibration: Permanent Laboratory

Calibration Procedures# and Type of Instruments/Materials to be calibrated Range CMC
(Level of Confidence Approximately 95 %)
Direct Current & Low Frequency Measuring Equipment, etc DC Voltage Source 100 mV 1.9 μV
1 V 6.0 μV
2 V 12 μV
4 V 23 μV
5 V 29 μV
6 V 34 μV
10 V 56 μV
Direct Current Source 1 mA 0.030 μA
10 mA 0.30 μA
100 mA 4.7 μA
DC Resistor 100 Ω 2.5m Ω
1k Ω 0.013 Ω
10k Ω 0.13 Ω
DC Voltage Measuring Equipment 100 mV 1.9 μV
1 V 6.3 μV
2 V 12 μV
4 V 21 μV
5 V 25 μV
6 V 29 μV
10 V 46 μV
Direct Current Measuring Equipment 1 mA 0.038 μA
10 mA 0.35 μA
100 mA 4.5 μA
DC Resistance Measuring Equipment 100 Ω 2.2m Ω
1k Ω 0.013 Ω
10k Ω 0.13 Ω
AC Voltage Source 50 Hz 1 V 0.00012 V
60 Hz 0.00012 V
500 Hz 0.00011 V
1 kHz 0.00011 V
10 kHz 0.00019 V
100 kHz 0.00096 V
200 kHz 0.0036 V
AC Voltage Measuring Equipment 50 Hz 1 V 0.000064 V
60 Hz 0.000064 V
500 Hz 0.000061 V
1 kHz 0.000081 V
10 kHz 0.000061 V
100 kHz 0.00016 V
200 kHz 0.00073 V

#All Calibration Procedures are in-house procedures developed by this laboratory

General Field of Calibration: Time & Frequency & Rotational speed

Date of Initial Accreditation of the Field: 2015-06-12
Permanent Laboratory/On-site Calibration: Permanent Laboratory

Calibration Procedures# and Type of Instruments/Materials to be calibrated Range CMC
(Level of Confidence
Approximately 95 %)
Time & Frequency Counter,etc. Frequency Generator* 50 Hz 1.1×10-5 Hz
60 Hz 1.3×10-5 Hz
100 Hz 2.1×10-5 Hz
200 Hz 4.2×10-5 Hz
500 Hz 1.1×10-4 Hz
1 kHz 2.1×10-4 Hz
2 kHz 4.2×10-4 Hz
5 kHz 1.1×10-3 Hz
10 kHz 2.1×10-3 Hz
20 kHz 4.2×10-3 Hz
100 kHz 2.1×10-2 Hz
200 kHz 4.2×10-2 Hz
10 MHz 2.1×10-6 MHz
Frequency Counter* 50 Hz 5.8×10-6 Hz
60 Hz 7.0×10-6 Hz
100 Hz 1.2×10-5 Hz
200 Hz 2.4×10-5 Hz
500 Hz 5.8×10-5 Hz
1 kHz 1.2×10-4 Hz
2 kHz 2.4×10-4 Hz
5 kHz 5.8×10-4 Hz
10 kHz 1.2×10-3 Hz
20 kHz 2.4×10-3 Hz
100 kHz 1.2×10-2 Hz
200 kHz 2.4×10-2 Hz
10 MHz 1.2×10-6 MHz

*The values in the CMC column include sources of uncertainty attributed to aunit under test.
#All Calibration Procedures are in-house procedures developed by this laboratory

General Field of Calibration: Acceleration

Date of Initial Accreditation of the Field: 2017-10-26
Permanent Laboratory/On-site Calibration: Permanent Laboratory

Calibration Procedures# and Type of Instruments/Materials to be calibrated Range CMC
(Level of Confidence
Approximately 95 %)
Vibration Acceleration Measuring Equipmet,etc. Reference Accelerometer(Voltage Sensitivity) 0.1 Hz 0.6 %
0.125 Hz 0.8 %
0.16 Hz 0.7 %
0.2 Hz 0.7 %
0.25 Hz 0.7 %
0.315 Hz 0.5 %
0.4 Hz 0.5 %
0.5 Hz 0.7 %
0.63 Hz 0.5 %
0.8 Hz 0.5 %
1 Hz 0.5 %
1.25 Hz 0.5 %
1.6 Hz 0.5 %
2 Hz 0.5 %
2.5 Hz 0.5 %
3.15 Hz 0.6 %
4 Hz 0.6 %
5 Hz 0.5 %
6.3 Hz 0.5 %
8 Hz 0.5 %
10 Hz 0.5 %
12.5 Hz 0.5 %
16 Hz 0.5 %
20 Hz 0.5 %
25 Hz 0.5 %
31.5 Hz 0.5 %
40 Hz 0.5 %
50 Hz 0.6 %
63 Hz 0.5 %
80 Hz 0.5 %
100 Hz 0.5 %
125 Hz 0.5 %
160 Hz 0.5 %
200 Hz 0.5 %
250 Hz 0.7 %
315 Hz 0.7 %
400 Hz 0.8 %
500 Hz 0.6 %
630 Hz 0.6 %
800 Hz 0.6 %
1000 Hz 0.6 %
1250 Hz 0.6 %
1600 Hz 0.6 %
2000 Hz 0.7 %
2500 Hz 0.8 %
3150 Hz 0.7 %
4000 Hz 0.7 %
5000 Hz 0.7 %
6300 Hz 0.8 %
8000 Hz 0.7 %
10000 Hz 1.4 %
Reference Accelerometer
(Voltage ration Sensitivity)
0.1 Hz 2.1 %
0.125 Hz 1.9 %
0.16 Hz 1.7 %
0.2 Hz 1.7 %
0.25 Hz 1.7 %
0.315 Hz 1.5 %
0.4 Hz 1.5 %
0.5 Hz 1.0 %
0.63 Hz 0.8 %
0.8 Hz 0.8 %
1 Hz 0.8 %
1.25 Hz 0.8 %
1.6 Hz 0.8 %
2 Hz 0.8 %
2.5 Hz 0.8 %
3.15 Hz 0.9 %
4 Hz 0.9 %
5 Hz 0.8 %
6.3 Hz 0.8 %
8 Hz 0.8 %
10 Hz 0.8 %
12.5 Hz 0.8 %
16 Hz 0.8 %
20 Hz 0.8 %
25 Hz 0.8 %
31.5 Hz 0.8 %
40 Hz 0.8 %
50 Hz 0.9 %
63 Hz 0.8 %
80 Hz 0.8 %
100 Hz 0.8 %
125 Hz 0.9 %
160 Hz 1.0 %
200 Hz 1.0 %
250 Hz 1.0 %
315 Hz 1.0 %
400 Hz 1.1 %
500 Hz 0.9 %
630 Hz 0.9 %
800 Hz 0.9 %
1000 Hz 0.9 %
1250 Hz 0.9 %
1600 Hz 0.9 %
2000 Hz 1.0 %
2500 Hz 1.1 %
3150 Hz 1.0 %
4000 Hz 1.0 %
5000 Hz 1.0 %
6300 Hz 1.1 %
8000 Hz 1.0 %
10000 Hz 1.6 %

#All Calibration Procedures are in-house procedures developed by this laboratory

ilac-MRA, IAJapan JCSS 0096, Jcss

KYOWA has been accredited by JCSS based on both accreditation standard ISO/IEC 17025 and accreditation scheme ISO/IEC 17011.
IAJapan run by JCSS has signed MRAs of Asia Pacific Accreditation Cooperation (APAC) as well as International Laboratory Accreditation Cooperation (ILAC).
KYOWA's Standard Apparatus Calibration Room is a laboratory accredited by JCSS and also meets the requirement for MRA of ILAC and APAC.The Accreditation No. is 0096.

Certificate of National Institute of Technology and Evaluation

ilac-MRA, IAJapan JCSS 0096, Jcss