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Model T701H

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Test Report

High Performance Zero Air System

The T701H adds Modbus TCP/IP connectivity to the proven reliability and performance of our high purity zero air system. This allows remote monitoring of key instrument functions including dewpoint status, scrubber temperature, box temperature and output pressure. Additionally, this digital access provides the ability to remotely disable the internal pump, allowing longer service intervals and less power consumption. The user can also remotely start instrument warm-up prior to arrival at the site.

The T701H is a fully self-contained source of high purity zero air for dilution calibrators. It is ideal for use with highly sensitive analyzers in ambient background and trace level applications. The T701H includes a dewpoint sensor, an oil and diaphragm-free pump, scrubbers to remove SO2, NO, NO2, O3, H2S and NH3, plus high performance scrubbers to remove CO and Hydrocarbons.

The regenerative, heatless dryer removes water and produces output with a dew point less than -40C (up to 30 SLPM flow rate). The system's pressure, temperature, and dewpoint values are all continuously monitored, which allows a microcontroller to adjust the pump cycling frequency, valve timing, and heater power for optimal performance.

  • Modbus Connectivity
  • Trace Level output purity
  • Dewpoint Sensor
  • Once/year maintenance interval
  • Regenerative, heatless dryer for maintenance-free water removal
  • Long-life scrubbers for SO2, NO, NO2, O3, H2S and NH3
  • High performance CO/Hydrocarbon scrubber
  • Automatic water drain
  • Automatic pump control with demand tank
  • Two-year warranty


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