Beijing york instrument
Phymetrix Moisture Measurement Innovation at Work
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With 4-20mA Output ,Dew Point Transmitter , Range From -110℃ - to 20℃ DP
Technical Specifications
| Performance | Operating Conditions | ||
| Measurement Ranges | -110℃ -+20℃ DP | Operating Humidity | Less than 95%(Non-Condensing) |
| Accuracy | +/-2℃ temperature Corrected | Operating Temp | -20℃ to +60 ℃ |
| Response Time | 95% of step change in 5 mins | Inlet Gas Pressure | 150psig |
| Repeatability | +/-0.5℃ DP | Flow Rate | >1 LPM |
| Electrial Specifications | Mechanical Specifications | ||
| Output | 4-20mA current source over the entire dewpoint range | Protection | Enclosure all stainless steel construction IP67 protection when installed |
| Power Supply | 12-28vdc | Process threads | 3/4”-16 |
| Online hygrometer | Model PMI201 hygrometer optional | Weight | 0.17KG |
Nanoporous Metal Oxide Film Sensor
PhyMetrix has developed a nanopore geometry with capillary action towards water molecules. This unique structure creates equilibrium between the inside and outside of these pores such that the concentration of water molecules inside the pores is exponentially proportional to the concentration of water molecules outside the pores. Thus the capacitance change due to a small change in water molecule content in the gas is significant enough to produce a repeatable measurement. The following graph depicts the sensor response to partial water vapor pressure of approximately 17 (nF) per decade of partial water vapor pressure (mB).
