Contact Us:
219.362.6258
sales@thermco.com
Mailing Address:
Thermco Instrument Corp.
P.O. Box 309
La Porte, In. 46352 USA
Shipping Address:
Thermco Instrument Corp.
1201 West U.S. 20
La Porte, In. 46350 USA
Primary Application: Furnace Atmosphere
Spec Sheet | Installation Drawing | C.A.D. Outline Drawing
| Model | 8300 |
| Common Mixture Ranges | 0-10% hydrogen in nitrogen
0-20% hydrogen in nitrogen 0-50% hydrogen in nitrogen 50-80% hydrogen in nitrogen |
| Mixed Gas Flow Capacity | 0-2,000 scfh (0-54 Nm3/h) This is the mixed gas capacity at the mid-range setting. The capacity may be more or less depending on the mixture setting. Consult Thermco for more details. |
| Gas Mixing Accuracy | ±3% of full range over 50°F to 90°F (10°C to 32°C)
±5% of full range over 10°F to 104°F (-12°C to 40°C) Stated accuracy assumes that the input temperature of the gases are equal. |
| Gas Analyzer | Thermal conductivity type made by Thermco. The detector is expected to last the lifetime of the gas analyzer. The calibration is highly stable, recommended calibration interval is one year. |
| Ambient and Supply Gas Temperature Range | 10°F to 104°F (-12°C to 40°C) |
| Standard Supply Gas Pressure | 100-125 psig (6.9-8.6 barg) Supply pressures do not have to be equal. |
| Standard Mixture Outlet Pressure | 10-40 psig (0.7-2.8 barg) Regulator provided by Thermco in gas mixer for mixture outlet pressure adjustment. Note: Gas mixers are frequently engineered for non-standard pressure conditions. |
| Gas Connections | 1 inch NPT female pipe for nitrogen, ½ inch NPT female pipe for hydrogen, 1 inch NPT female pipe for mixed gas. |
| Surge Tank | 30 gallon, ASME coded and CRN registered, pressure relief valve provided |
| Surge Tank Pressure Switch | Solid-state sensing and output, rated 100,000,000 cycles |
| Power Requirements | 115 VAC, 50/60 Hz, 0.5 amp. Available on request, 220 VAC, 50/60 Hz, 0.25 amps. |
| Electrical Construction | Meets the National Electric Code for a hazardous area, classified as Class I, Division 2, Group B. |
| Weight | 282 lbs. (128 kg) |
| Dimensions | 59.0 in (150 cm) height, 43.0 in (109 cm) width, 30.0 in (76 cm) depth |
| Mounting Type | Floor mounted |
The model 8300 is designed to mix hydrogen in nitrogen for a furnace atmosphere.
Because the gas mixer uses a surge tank design, this type of system is ideal for applications that require maintaining a precise proportion from zero flow to full flow with high reliability. The 8300 is suitable for continuous flow or intermittent flow demand. The 8300 may be piped to a multiple number of furnaces.
All Thermco gas mixers use a surge tank. The Thermco surge tank system has the significant advantage of maintaining the accuracy of the gas mixture from zero to full rated flow rate. There is no “minimum” flow rate. Gas mixing systems without a surge tank will have a minimum flow rate below which the gas mixture becomes inaccurate. The Thermco surge tank system is able to accomplish this accuracy without complex control valves or flowmeters.
Gas mixers will be made for supply pressures of 100-125 psig (6.9-8.6 barg) and mixed gas output pressures of 10-40 psig (0.7-2.8 barg) unless ordered otherwise. Gas mixers are often made to special pressure conditions; consult Thermco for details.
Each gas mixer is supplied with one instruction manual which includes wiring and flow diagrams. A data sheet is prepared for each gas mixer specifying major parts of the gas mixer, operating pressure settings and recommended spare parts. Thermco has been providing service on gas mixers since 1964.
Improper use of this product can cause death, serious injury, or property damage. Personnel dealing with this equipment should read and understand warning labels and instruction manuals provided by Thermco. Only personnel familiar with industrial gases should attempt to install or service this equipment. Gases are under pressure and therefore the hazards associated with pressurized systems exist. Gases from high pressure cylinders must be reduced to the specified pressure before entering the gas mixing system to prevent the possibility of equipment damage and personal injury.
Gases used in this equipment are flammable and therefore constitute a fire and explosion hazard.
Toxic, liquid or corrosive gases should not enter these gas mixing systems.
Thermco gas mixers are available through many local industrial gas suppliers. Thermco gas mixers may also be ordered directly from the factory. It is especially important to order the correct pressure conditions for the application. If there are questions, please contact the Thermco Sales Engineer.