Humedad
 
 
 
 
 
 
 

// Humedad - MediciÓn de Punto de RocÍo - Transmisores

Dew Point Transmitters
The Alpha Moisture Systems range of dewpoint transmitters are two/three wire, 24V powered, 4-20mA Dewpoint transmitters. Incorporated into the design of these transmitters are advanced electronics allowing for a power supply varying from 18 to 30V DC and are configured to output a linear, isolated, 4-20mA signal for the chosen range. Various dewpoint ranges are available covering an overall range from -110ºC to +20ºC dewpoint.

Model AMT
Dew Point Transmitter


• 2 Wire Loop Powered Dewpoint Transmitter
• Overall Range -120°C to +20°C Dewpoint
• Accuracy ± 2°C Dewpoint
• AUTOMATIC CALIBRATION
• Can be Configured for Linear 4-20mA signal in: °C & °F Dewpoint, ppm(v), ppb(v), g/m3, lb/MMSCF
• Temperature Compensation
• Failure Diagnostics
• Long Term Stability
• Fast Reponse
• IP 66 / NEMA4X Protection
• Supplied with Calibration Certificate Traceable to National & International Humidity Standards


Model AMT Dewpoint Hygrometer is a two wire 4-20mA loop powered transmitter, used for continuous measurement of humidity in a process gas or compressed air, which will output a linear 4-20mA signal corresponding to the dewpoint temperature. The Model AMT transmitter can also be factory configured to output a 4-20mA linear signal for any other moisture unit e.g. ppm(v), ppm(w), g/m3, lb/MMSCF etc.
The Ultra High Capacitance sensing element is long lasting and offers excellent sensitivity, repeatability and response speed. Each unit is supplied with a Certificate of Calibration, traceable to International Humidity Standards, validating accuracy to ±2ºC dewpoint.
The transmitter also incorporates an Automatic Calibration (AUTOCAL) feature, which allows the user to carry out a field calibration / span check. The AUTOCAL feature is operated by means of two small button switches built within the transmitter enclosure. To avoid tamper, the switches are locked in normal use and can only be activated by following a special routine.
The integral RISC microprocessor circuitry of the Model AMT transmitter allows high resolution with advanced selfdiagnostics for fault conditions. It also enables periodic re-calibration of the moisture sensor, storing calibration data within the fully self contained unit. Loop powered by a 7V to 28V dc source, the Model AMT transmitter will provide a linear 4-20mA signal over the chosen range.
The mechanics of the Model AMT transmitter have been designed to cope with extreme environmental conditions. The rugged stainless steel construction offers protection to IP66 (NEMA4X), with the transmitter electrical connections made via a secure industrial connector.
Model AMT transmitter can withstand 35,000 kPa (350bar) maximum pressure and by employing a low resistance cable, the transmitter can be located at significant distances, in excess of 1000 metres, from the control room. Designed with the operator in mind, for reliable and accurate measurements, the Model AMT transmitter is extremely easy to install and operate, requiring little or no maintenance.
The Model AMT transmitter is supplied with a Certificate of Calibration, an instruction manual and 2m connecting cable.

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Model ADHT-Ex Intrinsically safe
Dewpoint Transmitter


• 3 Wire, 24V, 4-20mA Dewpoint Transmitter
• Intrinsically safe - CENELEC EEx ia IIC T6, ATEX II 1G
• Various Ranges: Overall Range -110ºC to +20ºC dewpoint
• Accuracy ±2ºC Dewpoint
• Weatherproof Rating IP65
• Open/Short Circuit Detection
• Built-in temperature compensation
• Supplied with Calibration Certificate Traceable to National & International Humidity Standards

The Alpha Moisture Systems Model ADHT-Ex is a 3 wire, 24V powered 4-20mA dewpoint transmitter. The unit is fully self contained in a robust casing with weatherproof protection to IP65, making it ideal for use in heavy industrial environments.
Designed with the operator in mind, Model ADHT-Ex is extremely easy to use and the digital dewSMART technology ensures accurate and reliable readings with little or no maintainance.
Model ADHT is certified intrinsically safe to EEx ia IIC T6 for use in hazardous areas using an MTL 2441B signal isolator for 110V / 240V AC operation or MTL 5042 for 24V DC operation.
Various ranges are available covering an overall range from -110ºC to +20ºC dewpoint. The Model ADHT-Ex derives its power directly from the signal isolator and it is configured to give a linear 4-20mA signal for the chosen range.


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Av. Rivadavia 11088 P.6° Dto.”B” (C1408AAX) Capital Federal - Argentina
Tel. /Fax (+54) 011 4644-0825 / 4644-1376