houston texas pressure sensors temperature gages loop indicator flow 3300 wave radar level interface transmitter explosion proof
explosion proof flame proof nema 4x 7x hazardous duty atex fm
temperature gauges switches transmitters
temperature gauges switches transmitters
pressure sensors gauges sensors transmitters switches
ultrasonic displacement level switches
flow indicators turbine rotameter
flexible strip heaters cartridge emersion
contact wessco pretemp industrial instrumentation
pressure sensor gages oil field gas home
wessco pretemp sensors pressure gauges
bullard phone number john wessco products fax
bullard tx po box 75757

master card visa american express parts  

Wessco now manufactures
Stator RTDs
strator rtds sensors hot spot
Contact Us
for Details!!!

split sheath cartridge heaters chromalox

The calculation of heating requirements for heating solid materials (such as platens, dies, and molds) is similar to other applications. While most platen and die heating applications are accompished with cartridge heaters, strip or tubular heaters may also be used by inserting them into grooved slots in the metal

 

When selecting cartridge heaters, it is essential that the following factors be considered to ensure reasonable heater life and sufficient heat:

  • Select Watt Density
    The maximum permissible sheath watt densities for INCOLOY sheath (CIR) cartridge heaters for a given metal temperature are shown in the graph in the detailed spec sheet. These curves plot the recommended watt densities for various hole clearances. Graph G-201 (to the right) is useful for determining watt density for optimium life when selecting type CIR heaters.

split sheath cartridge heaters chromalox

watt density limits optimum life stainless alloy sheath cartridge heaters
  • Determine Proper Fit
    When cartridge heaters are installed in a machined or drilled hole, the hole should be sized to the nominal diameter of the heater. For best fit, holes should be drilled slightly undersized and reamed to the nominal heater diameter. Actual diameters of standard cartridge heaters are 0.003 to 0.005" smaller than nominal. This allows for easy installation when cold. Sheath expansion upon heating provides and interference fit and maximum heat transfer.

  • Protect Cartridge Heaters from External Contamination
    Contamination can occur when moisture, oil, etc. enters the sheath through the lead wires or terminal end. (The end opposite the lead wires is protected by a seal welded end disc.) Contamination frequently causes short life and dielectric failure. Special moisture resistant terminal constructions are available and hermetic seals can be supplied when severe contamination problems are present.

  • Provide Mechanical Protection for the Lead Wires
    Most high temperature lead wire electrical insulations have little resistance to mechnaical abrasion. Special constructions using sleeving or conduit for mechanical protection are available.

Click here for full detailed product spec sheet

 

Name:
E-mail:
Company:
Address:
Suite/Apt.:
City:
State:
Zip:
Daytime Phone:
Evening Phone:
Best time to call:
   
Please check which products you are interested in:
Pressure
Temperature
Level
Flow
Heaters
How did you hear about us?
Comments:
Code:

Type in the secret code word: secret code

 
houston texas temperature gauges pressure sensor valves