Universal Endo-Generator Control

Universal Endo-Generator Control System developed by Furnace Control Corp is a uniquely designed gas sampling method for control of endothermic generator atmospheres.

High accuracy atmosphere control system for
endo-generators.

U.S. Patent No. 5,324,415

US Patent No. 5,556,556

HIGH ACCURACY
The combination of an Accucarb® probe
and Sampled Gas Tube, provide the highest accuracy and fastest system response.
Typical accuracy is ± 1 °F dew point.

SIMPLE INSTALLATION
This unique gas sampling system
can be easily retrofitted into any existing Endothermic Generator. Since no
modification is needed of the water cooled
top hat assembly or of the existing plumbing, the typical installation can be completed in
one day. The installation is so simple that no engineering visit is necessary. Your own maintenance people can do it.

DEW POINT READOUT
The control instrument simultaneously
displays the generator dew point and the
set point directly in °F dew point.

PROVEN DESIGN
Field tested design used with many different makes of endothermic generators for long term reliability. Expected lifetime of the Accucarb probe in this type of installation is 24 months.

SIMPLE OPERATION
The system automatically controls, with a motorized gas valve, the desired dew point in the endo-generator. The probe is easily accessible; and the generator does not have to be shut down if a probe change is necessary.

SPECIAL FEATURES
* This system is capable of checking each
     retort independently to evaluate catalyst
     performance.

* Frequent cleaning to remove "soot" which
is common for other brands, is eliminated.

* No calibration required.

The Universal Endo-Generator Control System is specifically designed for Close control of dewpoint in endothermic atmospheres. In the sampled gas type of installation, a uniquely designed Sampled Gas Tube, is installed in the heating chamber of the generator. Inside this tube, a small quantity of endothermic gas is reheated and measured by an Accucarb Probe. The components comprising the complete control system are: a) Sampled Gas Tube** and Tube Mounting Flange; b) Accucarb Probe*; c) Control Panel and Motorized Gas Valve; and d) Interconnecting Probe Cable and Air Tube. All these are described below:

SAMPLED GAS TYPE GENERATOR CONTROL SYSTEM SCHEMATIC
(REUSE EXISTING TEMPERATURE AND SAFETY CONTROLS)

SAMPLED GAS TUBE AND TUBE MOUNTING FLANGE
Sampled Gas Tube X2O-2 is a closed end ceramic well, used to reheat the endo gas to be measured by the Accucarb probe. A flow meter is included to regulate and show proper endo gas flow rate. Recommended mounting is by use of Tube Mounting Flange Model 2F-l0 which is designed to be welded or bolted to the generator wall to produce a 2 inch female NPT port for the Sampled Gas Tube.
ACCUCARB PROBE
The probe is the most important component of any endo-generator atmosphere control system and the Accucarb High Temperature Probe Model CQ820-S-1, is the most accurate and reliable probe available for this use.
CONTROL PANEL AND MOTORIZED GAS VALVE
Control Panel and Motorized Gas Valve UGP1-5062-l-RLl-A consists of a Honeywell UDC 5000 3 mode proportional controller and a Honeywell 4 inch wide paper strip chart recorder both reading directly in dew point. The instruments are mounted and wired in a 20H x 16W x 12D NEMA 12 front opening enclosure. Below the dew point controller are an Allen-Bradley alarm indicator light for process deviation from set point and a Sonalert electronic alarm horn. Inside the enclosure is the probe reference air supply. Included with the panel is a motorized trim gas valve. The motorized gas valve consists of a Honeywell Modutrol motor assembled to a ½ inch North American Adjustable Port Valve. A natural gas flow meter to monitor the amount of trim gas flow is recommended but not included. Optional: temperature high limit controller; generator temperature controller and 2nd recorder pen for temperature are also available.
PROBE CABLE AND TUBE ASSEMBLY
This is a 20 foot long probe cable, probe thermocouple extension wire and reference air tubing to inter-connect the Accucarb Probe and the Control Panel. The cable has a connector on one end to fit the probe. Longer cables are available.

* US Patent No. 4,588,493

** U.S. Patent No. 5,324,415 and US Patent No. 5,556,556

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