Dew Point Transmitter

Product Details:

The DEWRay On-line is a precision chilled-mirror dewpoint hygrometer for the measurement of moisture in air or gases. The operating principle is based on continuous measurement of the dewpoint (or frost point) temperature of a gas.Inside the sensor head is a gold-plated copper mirror which is cooled by a two-stage Peltier element and an optical dew detection system. A Pt100 resistance thermometer measures mirror temperature. Formation of dew or frost on the mirror surface is detected by the optical system. The temperature at which this happens is known as the dewpoint temperature.It is a well-known physical phenomenon that when water vapor in a gas condenses at temperatures below the freezing temperature, super-cooled water may condense instead of ice. The problem is unpredictable. On a new and clean mirror, super-cooled water may form even at temperatures as low as -48°C, in other cases ice may form immediately. This can give significant measurement errors of as much as 4°C in this type of instrument. Some manufacturers of cooled-mirror hygrometers add a microscope to the instrument so that an operator can confirm by human eye if ice or water is present. Others induce the formation of ice by a deep freezing cycle.

DEWRay Dewpoint Hygrometer utilizes a special technique to detect the presence of super-cooled water. This is a technological breakthrough in cooled mirror instruments. Thanks to the instrument's split-beam reflex optical system (see technology section), DEWRay recognizes the presence of super-cooled water on the mirror surface and automatically corrects the reading with reference to ice. According to practice in national standards laboratories, correct dewpoint measurement is always made with reference to ice and not with reference to super-cooled water.

A further feature employed in the DEWRay is the self-cleaning system for the mirror. The AZOR - Automatic Zero Optical Reset system (see technology section for detailed information).
There is no need with DEWRay to verify whether ice or water is on the mirror surface with a microscope. AZOR and the split-beam reflex optical detraction technology mean that DEWRay may be employed in continuous unsupervised industrial measurement roles.

The DEWRay set comprises a panel mounting monitor unit, sensor head provided with sintered stainless steel filter, connecting cable and an additional Pt100 temperature sensor (optional) used when the unit of measurement desired is Relative Humidity. The instrument is provided with user configurable outputs: Two analog (4-20mA and 0-20mA) and two alarm outputs. Full configuration is available from the front panel or by parallel interface RS-232 (RS-485).

Monitor Specification:

• Measuring range: -40 to +60°C
• Accuracy for dewpoint: +/- 0.2°C
• Accuracy for temperature: +/-0.1°C
• Measurement Units: Cdp, Fdp, %RH, gm-3, aw,
• Resolution: 0.1°C
• Analog output: 2 channels 4-20mA, 0-20mA
• Alarm output: 2 Alarm/switching contacts, 5A 250V AC/24V DC programable
• Interface: RS-232 or RS-485
• Power supply (standard): 85-264 V AC 47/440 Hz, 15VA
• Operating Temperature: -10°C to +40°C
• Ingress protection: IP41 For front panel, IP20 for rear of instrument

Additional Information:

• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: Mumbai
• Delivery Time: 4-5 Weeks

Product Details:

The Dewpoint Transmitter makes monitoring dewpoints as easy as measuring temperature or pressure and can be instantly incorporated into air or gas measurement and control systems. STORK's highly automated manufacturing, calibration, and test processes make the DEWCom not only a very rugged and reliable instrument but also very competitive in price. By taking advantage of STORK's exchange sensor program, users can be assured that their process moisture measurement facility is never interrupted. It is very easy to install and maintain and comes with a full worldwide backup and service program.

Additional Information:

• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: Mumbai
• Production Capacity: 500
• Delivery Time: Ex-Stock

Product Details:

A compact and easy to use portable hygrometer which includes an integrated sampling system for quick measurement of compressed air or process gas moisture content. Simple and AffordableThe STORK DEWRanger-UNO portable hygrometer has been engineered to make moisture measurements in air and process gases on plants or in the field simple and quick. The totally self-contained instrument arrives ready to use.The DEWRanger-UNO is economical to buy and easy to operate. Automated manufacturing allows us to keep the price low. Operating costs are also low because the DEWRanger-UNO is reliable and durable. The DEWRanger-UNO utilizes the DEWCom dewpoint transmitter which means that calibration re-certification is achieved by sending just the transmitter to one of our service stations. Even better, by buying - into our exchange sensor program, the user is assured of the interruption-free availability of his instrument. Fully Integrated Sampling SystemThe DEWRanger-UNO incorporates a complete sampling system which allows practical connection to any air or gas line, clean or dirty, at up to 3 MPa pressure. DisplayThe DEWRanger-UNO portable hygrometer employs a LED 4-digits which in normal mode displays the measured value in large digits as well as battery charge indication.

Additional Information:

• Pay Mode Terms: T/T (Bank Transfer)
• Port of Dispatch: Mumbai
• Delivery Time: 4-6 weeks