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AquaXact 1688 Moisture Sensor

Brand: SERVOMEX
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The AquaXact 1688 is a rugged ultra-thin film aluminum oxide moisture sensor that enables fast and accurate dew point and ppm H2O measurements of moisture in a wide variety of gas phase process applications.  

Not only is it a standalone 4-20 mA transmitter, but it is also able to be remotely interfaced to the SERVOPRO MonoExact DF310E and the AquaXact 1688 digital controller.

The controller provides a high-clarity color touchscreen display, alarms, relays and advanced communication protocols including RS485, Modus RDU, Modbus TCP/IP and PROFIBUS. 

Optional internal oxygen sensors provide ppm to percent level O2 measurement capabilities.

The Al2O3 thin film sensor tip can be replaced by the user and the associated calibration file loaded into the transmitter using the controller, eliminating the need for return-to-factory calibrations.

Yearly field calibration adjustments require only a single gas standard.
Features
  • Dew Point range -100° to 20° C
  • High Accuracy: ±3° C - Repeatability ±0.5° C
  • Functions as a standalone Dew Point transmitter - 4-20 mA loop-powered
  • High-performance ultra-thin film high-capacitance Aluminum Oxide field-replaceable sensor element
  • Sensor unaffected by condensation and liquid water
  • Accurate dew point measurements over its full range, even under extreme temperature conditions
  • Interfaces with SERVOPRO MonoExact DF310E gas analyzer system and AquaXact controller via digital interface - maximum cable length 200 meters
  • Range of engineering units °C (dp), °F (dp), ppmV
  • Hazardous Area versions (Zone 2/Div 2) available soon
  • IP65 rated connector

Specifications

Brand

Accuracy

  • ± 3° C (± 3.6° F)

Enclosure, Body Material

  • Stainless Steel

Environmental Protection

  • IP65
  • IP66
  • NEMA 4X

NACE & NIST

  • NIST

Operating Pressure

  • Standard psig: 0 to 500 (kPa: 0 to 3,447, bar: 0 to 34)

Operating Temperature

  • -10° to 70° C (14° to 158° F)

Power Requirement

  • 13-33 Vdc, Reverse Polarity Protected

Pressure Range

  • Sample Gas Pressure Range - psig: 0 to 300 (kPa: 0 to 2,068, bar: 0 to 20.68)

Repeatability

  • ± 0.5° C (± 0.9° F)

Storage Temperature

  • -40° to 80° C (-40° to 176° F)

Temperature Range

  • Dew Point Range: -100° to 20° C (-148° to 68° F)
  • Sample Gas Temperature Range: -10° to 70° C (14° to 158° F)

UNF/UNC Connection

  • 5/8”-18 UNF Female

Documentation

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