Envco – Environmental Equipment

The H-3553 is the “Compact Combo” bubbler system. The H-3553 is “Compact” because of the smaller size enclosure compared to its predecessor the H-3551. It is a “Combo” because of its built in calibrated pressure sensor with the bubbler system. The H-3553 has also been referred to as a self-contained "smart" gas purge system. The H-3553 bubbler system produces a precision constant mass flow of gas. It is used to measure fluid levels in applications such as surface water (streams and lakes, etc.), ground water and tanks.

KEY FEATURES
A complete single unit replacement for gas purge bubbler systems that includes the pressure sensor.
• Measures depths up to 115 ft (50 psi, 35m)
• Pressure accuracy is 0.02% full scale
• Accuracy over temperature range exceeds ±0.02ft. (6mm) of water
• Built-in temperature compensation
• Operating temperature range -40E to +60EC
• Easy to use Simple RS-232 Menu Interface
• SDI-12 output provides measurement data in engineering units such as feet or meters
• Output modes: SDI-12, 4-20mA, RS-232
• Compatible with RS-232 Data Logger
• Enclosure is nonconductive and corrosion proof
• Low current operation (6mA standby)
• Extended SDI-12 command for setting the
• Stage to the current water elevation or pressure
• Up to 90 psi purge pressure
• Unique purge sustain option
• Atmospheric Pressure Compensated

The H-3553 uses a battery operated compressor to maintain pressure in an internal tank. A microprocessor determines how much pressure is needed in the tank, based on the current head pressure, to produce a constant bubble rate. Hence, the term "smart". The compressor and tank replace the dry nitrogen tank used in previous systems.

The H-3553 uses a sophisticated system of sensors and valves to regulate the bubble rate and purge pressure. This portion of the H-3553 replaces the sight feed flow controller and pressure regulator (Conoflow system) used in previous systems.

The H-3553 is a standalone system to be used with a Data Collection Platform (DCP). It works best with the XL series DCP’s, as there are some additional programming options through the XL series DCP. The XL series DCP’s provide ease of programming in the field with an H-3553 menu built into the DCP.

The H-3553 provides a purge feature which temporarily pumps up the tank to a high pressure and opens a valve to apply high pressure to the orifice line. This feature is designed to remove any sediment that may have collected in or around the outlet of the orifice line.

Also available is the H-3553-D Self-contained Continuous Flow Bubbler with Fully Integrated Pressure Sensor for use with any DCP. Includes H-355-DES-2 Desiccating Air Dryer.

Ordering Information
Please specify H-3553-15 for 15 PSI, H-3553-30 for 30 PSI, or H-3553-XX for 50 PSI

H-3553 Self-contained Continuous Flow Bubbler with Fully Integrated Pressure Sensor for use with any DCP

H-3553-D Self-contained Continuous Flow Bubbler with Fully Integrated Pressure Sensor for use with any DCP. Includes H-355-DES-2 Desiccating Air Dryer.