National (measurement) standard - standard recognized by an national decision to serve, in a country, as the basis for assigning values to other standards of the quantity concerned.
Competent body for the relevant national decision is the Czech office for Standards, Metrology and Testing (COSMT) . Czech National Standards are mostly maintained by the CMI, but also other laboratories may be authorized by the COSMT to develop, maintain and operate national standard. So the Institute of Fotonics and Electronics, Academy of Sciences of the Czech Republic maintains the Czech time and frequency standard.
Acoustics, ultrasound and vibration
| standard Code | standard | range, value | responsible | |||
|---|---|---|---|---|---|---|
| ECR | 180-1 | Acoustic Pressure Standard | -26 to -28 | dB re1V/Pa | Ing. Michal Bartoš | |
| ECR | 180-9 | Standard of Harmonic Linear Vibration | 0,1 to 150 | m/s 2 | Ing. Michal Bartoš | |
Electricity and magnetism
| standard Code | standard | range, value | responsible | |||
|---|---|---|---|---|---|---|
| ECM | 210-1/13-051 | DC Voltage Standard | 1 to 10 | V | Ing. Jiří Streit | |
| ECM | 212-1/08-038 | AC Current Ratio Standard | (0,5 to 5000) A / (1 and 5) A | Ing. Renata Styblíková , Ph.D. | ||
| ECR | 212-2/09-045 | AC Voltage Ratio Standard | (1 to 400kV) / 100 V | Ing. Renata Styblíková , Ph.D. | ||
| ECM | 220-1/03-025 | Electrical Power Standard at 50 Hz | 2.5 to 30 000 | W | RNDr. Karel Šefčík, CSc. | |
| ECM | 230-1/08-043 | Quantum Standard of DC Electrical Resistance | 1...100 and 10000 | Ohm | Ing. Petr Chrobok | |
| ECM | 240-1/01-016 | RF Power Standard | 1 to 10 1 MHz to 40 GHz | mW | Ing. Karel Dražil | |
| ECM | 240-2/03-023 | Reflection and Transmission Coefficient | 0 to 1 0,1 MHz to 50 GHz | Ing. Karel Dražil | ||
| ETR | 240-3/ | Antenna Factor Calibration Equipment (30 MHz to 1 GHz) | 0 to 40 | dB | Ing. Karel Dražil | |
| ECM | 240-5/03-024 | Field Strength Standard | 0.01 to 200 50 kHz to 3 GHz | V/m | Ing. Karel Dražil | |
| ECM | 250-1/04-029 | Capacitance Standard | 10 and 100 | pF | Ing. Jana Horská, Ph.D. | |
| ETR | 250-2 | Total Harmonic Distortion (THD) Standard | 0.001 to 100 | % | Ing. Jiří Streit | |
| ETR | 250-3 | Loss Factor Standard | 0,000001 | Ing. Jiří Streit | ||
| ECM | 260-1/01-011 | Standard of Magnetic Flux | 10 | mWb/A | Ing. Michal Ulvr, Ph.D. | |
| ECM | 260-2/01-012 | Standard of Magnetic Flux Density | 0,6 | mT / A | Ing. Michal Ulvr, Ph.D. | |
Flow
| standard Code | standard | range, value | responsible | |||
|---|---|---|---|---|---|---|
| ECM | 140-1/00-008 | National Standard - Bell Prover | 4 to 400 | m 3 /h | Ing. Tomáš Valenta | |
| ECM | 140-2/00-009 | National Standard Based on Static Weighing | 0,15 to 17 | m 3 /h | Ing. Tomáš Valenta | |
| ECM | 140-3/10-048 | Primary Low Mass Flow Standard GFS | 1 to 20 000 | sccm | Ing. Zdeněk Krajíček | |
| ECR | 140-8 | Flow of Water | 0,05 to 150 | m 3 /h | Mgr. Jan Geršl, Ph.D. | |
| ECM | 140-9/07-035 | Flow of Technical Liquids | 0,4 to 400 | m 3 /h | Mgr. Jindřich Bílek | |
| ECM | 160-1/14-055 | National Standard of Air Speed | 0,5 to 50 | m/s | Mgr. Jan Geršl, Ph.D. | |
Ionising radiation
| standard Code | standard | range, value | responsible | |||
|---|---|---|---|---|---|---|
| ECM | 140-1/00-008 | National Standard - Bell Prover | 4 to 400 | m 3 /h | Ing. Tomáš Valenta | |
| ECM | 140-2/00-009 | National Standard Based on Static Weighing | 0,15 to 17 | m 3 /h | Ing. Tomáš Valenta | |
| ECM | 140-3/10-048 | Primary Low Mass Flow Standard GFS | 1 to 20 000 | sccm | Ing. Zdeněk Krajíček | |
| ECR | 140-8 | Flow of Water | 0,05 to 150 | m 3 /h | Mgr. Jan Geršl, Ph.D. | |
| ECM | 140-9/07-035 | Flow of Technical Liquids | 0,4 to 400 | m 3 /h | Mgr. Jindřich Bílek | |
| ECM | 160-1/14-055 | National Standard of Air Speed | 0,5 to 50 | m/s | Mgr. Jan Geršl, Ph.D. | |
ECM approved Czech national standard
ECR CMI standard, Czech reference standard
EPR Reference maintained by authorized laboratory, other than CMI
ETR CMI standard