DEW POINT CHILLED MIRROR ANALYZERS PRODUCT DATASHEET MODEL 373 Chilled Mirror Analyzers High Performance Reference Chilled Mirror Hygrometer Typical applications: High precision Laboratory reference Dual mirror PRT’s Wide measuring range Temperature controlled sampling system Fast response Touch screen full color LCD user interface • Calibration transfer standard • Meteorology reference • Fundamental research projects • Trace humidity Measurement • Critical process monitoring • Fuel ce

High Precision Chilled Mirror Hygrometry Chilled mirror hygrometry, a process used to measure the dew or frost point of a gas, works in the following manner. Light shines onto a polished mirror surface, the temperature of which is controlled by a thermoelectric Peltier element. A light-sensitive receiver measures the intensity of the direct reflection. When the mirror is clean and dry, the intensity of the reflected light is at its maximum. Conversely, a cooled mirror with water vapor condensed on its surface scatters the light, resulting in less light directly reflected and in reduced signal...

Optimum Response Injection System – ORIS Measurements that once took several hours or more, are now performed in a matter of minutes. ORIS allows faster measurements at mirror temperatures below -60°C. At these low frost point conditions, a chilled mirror hygrometer must cool the mirror to a value well below the actual frost point temperature to start the condensation process on the mirror. Due to the low water vapor content of the gas, building even a thin layer of frost on the mirror often requires several hours; the lower the frost point of the gas, the longer it takes. ORIS reduces hours...

High Dew Point Measurement In general, making measurements of high dew point temperatures, i.e. those above room temperature, can pose difficulties due to possible condensation within the sampling tubes. Preventing such condensation often requires the use of external heaters and controllers to maintain the temperature of all tubing above the dew point temperature of the gas. The Model 373 offers a simpler solution. In addition to automatic control of the internal tubing and measurement head temperatures, it controls externally connected heated hose. Simply connect the hose and plug into the electrical...

Convenient Calibration Check Users can easily check the Model 373 system’s stability at any time using the built-in Ice-Test function. This automated test procedure allows the user to confirm that ice on the mirror melts at 0 °C to verify the accuracy and stability of the mirror temperature measurement system. Easy To Use and Minimal Maintenance The 373 does not require either calibration adjustment or sensor replacement. Maintenance is limited to periodic mirror cleaning. The mirror check feature can be user programmed to regularly check for surface contaminants. Easy Mirror Cleaning Access...

Specifications Specifications: Working range Calibrated range Measuring Ranges Frost/Dew Point: Temperature Sample pressure Accuracy Frost/Dew point (for calibrated range) Temperature Reproducibility Frost/Dew point Temperature Standard Features Digital I/O Display Mirror cooling Mirror temperature sensors External temperature probe Analog outputs Gas connections Sample gas flow rate Sample gas circuit Transport case Power cable Operating instructions Calibration certificate RS-232 8.4” LCD with color touch screen 3-stage Peltier thermoelectric Dual Platinum Resistance Thermometer PRT (Pt-100)...

Ordering information Description: Order code Order code 100 bar pressure version 373 (L or LX only) Twin relay module, two normally open contacts for mirror check status and common fault Additional 1 year warranty upgrade (maximum 3 years) For a complete range of options and accessories, please contact us and request our pricelist. * Requires a heated hose for measurement of dew points above ambient tempera

DEW POINT CHILLED MIRROR ANALYZERS GAIN REAL-TIME INSIGHT INTO YOUR PROCESS Process Insights manufactures and delivers premium sensors, monitors, detectors, analyzers, instrumentation, and software that are mission-critical to keep your operations, personnel, and the environment safe – every day across the globe. Get the most reliable, precision analytical technologies available on the market today. We will work to match your needs and budget, and provide the optimal, and most stable process analysis solution for your application. CENTERS OF EXCELLENCE | PROVIDING PROVEN SOLUTIONS Process Insights...