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The Need
Removing an oxygen insitu probe from any combustion process is a time consuming and costly task. Periodic removal of insitu probes is required to protect zirconium oxide cells from chemical washdown operations while higher blends and increased use of high ash and lower sulfur PRB coals require more frequent removal of probes to clean plugged filters.
The Solution
All WDG-Insitu flue gas oxygen probes incorporate the unique inner/outer probe design which facilitates removal of the cell/heater assembly through the probe head. Once the inner probe is removed, the outer probe support pipe allows straight run access to insitu filter for cleaning with compressed air. This feature significantly reduces turn-around time. The WDG-Insitu probe is compatible with existing Yokogawa, Westinghouse/Enotec, and Rosemount WC3000 descrete microprocessor controls so entire replacement of oxygen system is not required to obtain this maintenance cost reduction feature.
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These controls utilize a single probe input for maintaining a level of liquid. A built-in time delay prevents rapid cycling. They are packaged in a standard octal plug-in housing. The probe and sensing circuit are isolated from line voltage via a transformer. The probe is driven with an AC signal to prevent plating. The output is an electro-mechanical relay rated at 10 A.
Operating Logic: In the Model 05SLA (Pump Down) the output relay is deactivated as long as no liquid is in contact with the probe. As the liquid makes contact with the probe, a time delay is initiated. At the end of the time delay, the output relay is activated until the liquid breaks contact with the probe.
In the Model 05SLB (Pump Up) the output relay is deactivated as long as the liquid is in contact with the probe. As the liquid drops away from the probe, a time delay is initiated. At the end of the time delay, the output relay is activated until the liquid touches the probe again.
If the tank is non-conductive, a second (common) probe must be installed at a level where it will always be submerged.
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The TMM Series offers selectable multiple time ranges, functional logic modes and universal input voltage range, all in one plug-in 1/16 DIN style panel mountable package.
Programming is accomplished by using two multi-position rotary switches. One switch selects one of six time ranges. The other switch selects one of five operating logic modes. A 3-digit push-button switch selects the amount of time required for a timing cycle.
Note: 1) Do not apply voltage or ground to the start switch, 2) Switch leads should be shielded when running close to other wires (Start switch suppled by customer)
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General Small Vaneaxial Information
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These are compact, high-speed fans whose airflow is parallel to the motor shaft. The impeller and guide vanes are of airfoil construction for maximum aerodynamic efficiency and minimum acoustical noise.
Vaneaxial fans are designed for use in tightly packaged airborne “black boxes” where sizes and weight must be held to an absolute minimum, where
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reliability is critical, and where high heat loads must be dissipated with cooling air.
They come in a variety of voltages and frequencies and are available with lead wires, terminal blocks and ms connectors. Most units are available with an optional internal fan performance sensor (FPS) or external low speed warning device (LSWD). |
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Rotron 1/2 AXIMAX 2
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Note: See specific part-number drawing for complete product dimensions.
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General
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Physical envelope: 2.176” Dia. x 1.16” L
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Weight: approximately 4.25 ounces
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Specially designed for electronics box cooling, such as avionics, radar, electronic counter-measures, displays, and communications equipment in aircraft, ground and shipboard applications.
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Custom mounting configurations such as flanges or servo rings and synclamps are available, please contact the Application Engineering department for more information.
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Materials and Finishes
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All aluminum components are finished with a black anodized coating per MIL-C-8625. The shaft and hardware are of corrosion-resistant stainless steel.
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The impeller runs on two high-precision, double-shielded, stainless steel ball bearings (ABEC, Class 5) for long, maintenance-free life.
- The stator is wound in accordance with the specifications for Class F insulation.
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| AC Powered Units
Direct Connection (lead wires or MS connector)
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Free delivery airflow of 32 CFM at 400 Hz
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Ambient temperature range: -54°C to 125°C
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Acoustic levels as low as 55 dBA
- Airflow, maximum ambient and acoustic levels will vary depending on design parameters
DELTAC®Converter Driven Units
- DELTAC® converters allow 50 through 400 Hz fans to be driven by 50 or 60 Hz power to obtain the higher frequency performance
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DC Powered Units - E.C.D.C. ®
Direct Connection (lead wires)
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Free delivery airflow of 41.7 CFM
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Ambient temperature range: -54°C to 100°C
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Acoustic levels as low as 49.7 dBA
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Airflow, maximum ambient and acoustic levels will vary depending on design parameters
BATAC®Inverter Driven Units
- AC square wave fans are driven from a DC power source through a BATAC® Inverter.
- Low cost alternative when multiple fans are used in a single application or area.
- Allows for greater than 100 VDC input voltage
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| Options/Accessories |
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| Ordering Information |
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| When ordering, please specify the specific Rotron part number, or call for ordering information based on the configuration and motor series. Refer to the Unit Description Key explanation below. |
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| Unit Description Key |
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The unit description key is for reference only and should not be confused with an order form. While most units are custom configurations, not all variations of the key shown below are possible. Please contact the Application Engineering department for more information regarding possible custom configurations.
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General Tubeaxial Information
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Tubeaxial fans are integrated axial flow air moving devices in which the motor is cast inside the impeller to achieve the smallest possible axial dimension. Higher aerodynamic performance and efficiencies can be achieved with these true airfoil blade designs. These fans typically operate near free delivery, but can achieve static pressures above those of the propeller fans.
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The Tubeaxial style fan is suitable for operation in severe environmental conditions in air, ground, and shipboard applications. They come in a variety of voltages and frequencies and are available with lead wires, terminal blocks, or MS connectors. All tubeaxial fans are finely balanced to meet the requirements of MIL-B-23071. Most units are available with an optional internal fan performance sensor (FPS) or external low speed warning device (LSWD).
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Rotron 1/2 PROPIMAX 2
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Note: See specific part-number drawing for complete product dimensions.
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General
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Physical envelope: 3.78” Dia. x 1.33” L
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Weight: approximately 0.41 lbs.
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Venturi and rotorprop are die cast aluminum.
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Specially designed for cooling electronics in aircraft, ground-based and shipboard applications
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Excels in cooling electronic counter-measures, communications equipment, power supplies, avionics and radar.
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Custom mounting configurations such as flanges or servo rings and synclamps are available, please contact the Application Engineering department for more information.
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Materials and Finishes
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All aluminum components are finished with a chemical conversion coating per MIL-C-5541, top coat of lusterless black enamel, color #37038, per Federal Standard 595 conforming to TT-E-489 Type B. The shaft and hardware are of corrosion-resistant stainless steel.
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The impeller runs on two high-precision, double-shielded, stainless steel ball bearings (ABEC, Class 5) with an integral lubricant reservoir for long, maintenance-free life.
- The stator is wound in accordance with the specifications for Class F insulation.
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AC Powered Units
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DC Powered Units - E.C.D.C. ®
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Direct Connection (lead wires or MS connector)
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Free delivery airflow of 68 CFM at 400 Hz
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Ambient temperature range: -54°C to 70°C
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Airflow, maximum ambient and acoustic levels will vary depending on design parameters
DELTAC®Converter Driven Units
- DELTAC® converters allow 50 through 400 Hz fans to be driven by 50 or 60 Hz power to obtain the higher frequency performance
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BATAC®Inverter Driven Units
- AC square wave fans are driven from a DC power source through a BATAC® Inverter.
- Low cost alternative when multiple fans are used in a single application or area.
- Allows for greater than 100 VDC input voltage
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Options/Accessories
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Synclamp Mounting
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Finger Guard
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Ordering Information
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| When ordering, please specify the specific Rotron part number, or call for ordering information based on the configuration and motor series. Refer to the Unit Description Key explanation below. |
| Unit Description Key |
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The unit description key is for reference only and should not be confused with an order form. While most units are custom configurations, not all variations of the key shown below are possible. Please contact the Application Engineering department for more information regarding possible custom configurations.
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Gemco can provide a wide variety of special features to meet your specific requirements. Special guards, legend plates, mounting bases, contact arrangements, safety threadle gates, etc. to meet OEM needs.
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