Calometric Power Meter
- High Accuracy
- High Sensitivity
- HAutomated Measurements Full Waveguide Frequency Band
The CPMXXE series instruments are high precision broadband Calorimetric Sensors operating in millimeter and sub-millimeter wave range on a principle of substitution of microwave power by direct current power, using an autocompensating transistor transducer. Calorimetric Sensor is supplied with Calorimetric Power Meter M1-25M (indicator block), which provides PC connection via RS-232 interface.
Calorimetric Power Meter with Calorimetric Sensor provides accurate absolute power measurements in single mode and multimode waveguides (Metal Dielectric Waveguide) which could be a priority for terahertz physics and technology.
| Sensor Model | Frequency range, GHz | Waveguide size | Power measurement range, mW | Power measurement error | VSWR, max |
| CPM06E | 33 - 50 | WR - 22 |
0,002-20 |
3%+2µW | 1.1* |
| CPM04E | 50 - 75 | WR - 15 |
0,002-20 |
3%+2µW | 1.1 |
| CPM03E | 75 - 110 | WR - 10 |
0,002-20 | 3%+2µW | 1.1 |
| CPM02E | 110 - 170 | WR - 06 | 0,002-20 | 3%+2µW | 1.1 |
| CPM015E | 170 - 225 | WR - 05 | 0,002-20 | 5%+2µW | 1.1 |
| CPM MDW | 170 - 2500 | 10х10 mm |
0,002-20 | 5%+2µW | 1,1** |
* VSWR 1.2 max in 33-37.5 GHz frequency range;
** measured till 225 GHz
Calibration factor and VSWR of CPM02E Calorimetric Sensor
| Frequency, GHz | Calibration factor, W/V | VSWR |
| 110 | 0.02628 | 1.070 |
| 120 | 0.02522 | 1.007 |
| 130 | 0.02459 | 1.013 |
| 140 | 0.02428 | 1.012 |
| 150 | 0.02399 | 1.054 |
| 160 | 0.02386 | 1.040 |
| 170 | 0.02376 | 1.049 |
DC parameters of Calorimetric Power Meter
| Noise fluctuation (one standard deviation), µW | 0.11 |
| Zero drift, µW / min | 0.05 |
| Nonlinearity relative to 5 mW level, % | 0.14 |
| Response time, s (98% of full scale) | 30 |