MHI MC-GAXP-130-V Spiral Microheater For Vertical or Inverted use.
For the “V” vertical modules, the spiral is potted- held by FractalGlue™ (Alumina). As shown in the gallery pictures below the primary image.
1200-1250C (OD=2″) Maximum temperature of element in vertical configuration.
Ceramic Base and End Connectors Included.
Approximately 500- 600 Watts. Please monitor to have less than [22V and less than 22A (RMS)**]. The highest values are for an entirely free radiating unit with natural or convective heat flow. Please monitor the temperature with a pyrometer or similar device and monitor the current and amps not to exceed any maximum condition. While heating up beyond 20 V and 19 Amps, please verify that the pyrometer temperature does not exceed 1200-1250C. For vertical microheaters, if the temperature is raised too rapidly, there could be some delamination.
** Power reported under free radiating/ no-load condition with heater resting on the provided ceramic plate -free for convection.
Connectors comprise One set of appropriately rated connecting clips.
The maximum current/power will be different (lower) if covered. Please do not exceed the limits of current, voltage, or element temperature.
For more information, please visit our GAXP Spiral Microheaters page
For controls, choose either:
- Feedback controls, namely BPAN-O-PLUS and Transformer. or
- Open Controls with no feedback, i.e., the DC Power Supply and a TC Read. One DC supply per 2″ microheater.
Only the BPAN-O 120T (120V) option should be chosen when a single 2″ unit is used. MHI will confirm the order with the right panel, so there is no need to be concerned if the wrong panel is chosen during the order. Please choose BPAN-O-PLUS-220 when more than three units of the 2″ Spirals are used in series with a BPAN-O-PLUS-220 Control system. The BPAN’s cannot exceed 6KW.
For more information on the BPAN-O-PLUS controller, please click on the Power and Temperature Control Panel Pages. Note particularly that the TC-Read work on a 120V supply.
Alumina ceramic is rated to 1800C.
The weight will be calculated with the control panel option when checking out.
The correct weight and shipping price will be shown in the final acknowledgment from MHI.
Note that the maximum temperature is at the center of the spiral region unless asymmetric power delivery is required
In the diagram in the specifications tab D1 and D2 are separated by 0.1″ T is 0.25″ and H is 2.5″. D1 is the OD.
For obtaining maximum temperature MHI controls are highly recommended. Large diameter GAXP® microheaters could develop some springiness from induced magnetic forces. Potting in ceramic paste is allowed as long as care is taken to factor-in the loss of any thermocouple response in the measured temperature.
Note element temperature will be higher and maximum element temperature should not be exceeded. In the free radiation mode the power can be maximized.
The objective of the use for free radiating devices is to maximize the radiative POWER transfer from the heating elements. If the heating element is covered with insulation, the objective of the user changes to obtain a certain temperature inside the insulated region. The control of temperature inside a chamber, or power maximization in a free radiating mode can be made with MHI temperature and/or power controllers. When covered the power and current will be lower and the element temperature can be exceeded quickly if not monitored and controlled. For either objective, one cannot exceed the rated temperature or maximum current of the heating element. Power output will be lower in enclosed radiation mode with a temperature control feature as opposed to or in addition to the power control.
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National Laboratory, USA
I have received the heater and control system, and it is all visually undamaged and exactly to my specifications. Thank you for your help!
Professor V.V. USA Surface Science Center, Ohio
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Researcher at US National Laboratory
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Senior Professor at Premier World University
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S.W. National Laboratory (Energy), USA Government
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