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Installation, Operations and Maintenance Manual
Content
October 2020
Installation, Operations and Maintenance Manual
TR000058ENUS-02_10-20
Installation, Operations and Maintenance
Assembly & installation drawings, Bill of Materials, and parts lists for your product may
be obtained by contacting Emerson. Emerson will provide these by email, fax or mail.
Your local TESCOM™ sales representative can provide additional assistance. Be sure to
have your complete model number ready. See back page for contact information.
General Information
TESCOM™ 44-6800E Series Electrically Heated Vaporizing diaphragm-sensed pressure
reducing regulators are specifically engineered for applications requiring dependable
pressure regulation. These regulators are especially appropriate for installations where
high system pressures (up to 6000 psi) must be reduced to levels suitable for actuating
low pressure (0 psig/0 bar to 500 psig/35 bar) instruments and related equipment.
In addition, the 44-6800E Series “Vaporizing” regulator is designed to offset the effects
of the Joule-Thompson cooling effect that occurs when there is a pressure drop in a gas.
It can also be used to vaporize a liquid into a gas in some applications.
The electrical board inside the housing powers an electrical heater that indirectly heats
the process media. This heater is controlled by the electrical board for temperatures
ranging from 122 °F/50 °C to 752 °F/400 °C. There is a thermocouple within the heater
core to provide temperature feedback. There is a secondary thermal device, thermal cut
off (TCO), within the regulator assembly. See Figure 1.
Figure 1:
ELECTRIC (Shown with optional LED display).
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