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The PHG transducer measures the concentration of CO2 in the atmospheric air of closed rooms by converting the measured value into a standard current or voltage signal. This model uses a built-in dual infrared sensor providing good accuracy and sensitivity, as well as low dependence on temperature and humidity. The converter can be ordered with a built-in digital display as well as an RS232 interface. PHG there are options for air duct installation or free installation. Available with a straight or angled coupling mounted on the top or bottom of the housing. The field of application of PHG includes the control of air parameters in air conditioning and ventilation, the cultivation of fungi and microorganisms, as well as other applications requiring the measurement of carbon dioxide.
| Захранване | 15…32 VDC |
|---|---|
| Аналогов вход | Non-dispersive Infrared CO2 cell |
| Измервателен обхват | 0…3000/5000/10000 ppm |
| Аналогов изход | 0…10 V, 0…20 mA, 4…20 mA, Other |
| Интерфейс | None, RS232 |
| Монтаж | duct mounting, Free |
| Корпус | 80x80x70 mm |
| Input | ||
| Input type | Non-dispersive Infrared CO2 cell | |
| Measurement range | 0…3000/5000/10000 ppm | |
| Accuracy | ||
| Measurement error (1) | ± 2 ppm (0…3000 ppm) at 10…50 ⁰С | |
| Temperature dependence | 10 ppm for 1 °C | |
| Warm-up time | max. 90 s (at 25 °C) | |
| Response time (0…80%) | max. 30 s (w/o sintered filter) | |
| Output | ||
| Output signal | 0(4)…20 mA | 0…10 V |
| Output update | 2 s | 2 s |
| Minimum output load | – | 1 MΩ |
| Maximum output load | 350 Ω at 20 mA | – |
| Over-scale limit | max. 35 ± 2 mA | 17 ± 2 V |
| Interface | ||
| Interface type | RS232, 9600 bps | |
| Function | CO2 data transmission | |
| Protocol | ASCII, free | |
| Power supply | ||
| Supply voltage | 15…32 VDC | |
| Admissible variations | 1 Vp-p at 50 Hz | |
| Consumption | max. 90 mA (150 mA w/ indicator) | |
| Local indicator | ||
| Digital display | 4 LED indicators, 14 mm | |
| Display resolution | 1 ppm | |
| Display refresh | 1 s | |
| Accuracy | 0.2% from span | |
| Temperature drift | 0.01% from span for 1 °C | |
| Operating conditions | ||
| Operating temperature | 0…50 °C | |
| Operating humidity | 0…85 %RH, non-condensing | |
| Storage temperature | -10…60 °C | |
| Design and materials | ||
| Case material | ABS/PC plastic | |
| Inlet material | POM plastic | |
| Housing dimensions (no connector) | 80x80x70 mm | |
| Wiring | 4-pin 812 connector (2) | |
| Sensor protection | plastic cap with polyester filter | |
| Sintered filter (option) | stainless steel, 75 μm | |
| Protection class | IP65 (excluding gas inlet) | |
| Mounting | free (3) | duct |
| Process connection | none | movable flange (4) |
| Gas inlet length | 30 mm | 130 mm |
| Weight | max. 250 g | max. 350 g |
(1) Including nonlinearity error
(2) Straight or angles female part included
(3) Radial and axial mounting accessories can be ordered separately (see ‘Accessories’)
(4) Small POM flange DN16.5.
