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Parker Hannifn Corporation
Parfex Division
Ravenna, OH
Catalog Number 4200-M-2 Chemical Processing and Refneries
SL Series Self-Regulating Bundles
Maximum Exposure 185°F (85° C)
Process Tubes 3/4” to 1” O.D. ( 19mm to 25mm)
Single Tube Designs (consult factory for multiple tubes)
**Minimum
Process
Temperature
to Maintain
Standard Insulation Package *
Environments Average High / Low Ambient Conditions
Extreme Cold Cold Moderate Cold Moderate Warm
-65°F Low
80°F High
-40°F Low
80°F High
-10°F Low
95°F High
0°F Low
105°F High
10°F Low
115°F High
120 Volts -54°C Low
26°C High
-40°C Low
26°C High
-24°C Low
35°C High
-18°C Low
40°C High
-13°C Low
46°C High
40°F (4°C) 10 Watt / Ft 8 Watt / Ft 5 Watt / Ft 5 Watt / Ft 3 Watt / Ft
50°F (10°C) 10 Watt / Ft 8 Watt / Ft 5 Watt / Ft 5 Watt / Ft
75°F (24°C) 10 Watt / Ft 10 Watt / Ft 8 Watt / Ft
208 Volts
40°F (4°C) 10 Watt / Ft 8 Watt / Ft 5 Watt / Ft 5 Watt / Ft
50°F (10°C) 10 Watt / Ft 8 Watt / Ft 8 Watt / Ft 5 Watt / Ft
75°F (24°C) 10 Watt / Ft
240 Volts
40°F (4°C) 10 Watt / Ft 8 Watt / Ft 5 Watt / Ft 5 Watt / Ft 3 Watt / Ft
50°F (10°C) 10 Watt / Ft 8 Watt / Ft 5 Watt / Ft 5 Watt / Ft
75°F (24°C) 10 Watt / Ft 10 Watt / Ft 8 Watt / Ft
* The above heater cable selection is based upon our standard insulation package, other insulation packages are available to maintain higher
temperatures.
** The maintenance temperature could actually be higher depending upon the size and number of tubes required, it is recommended that
for precise temperature control that a thermal sensor be used. Contact the factory for more exact product thermal property based upon your
application conditions.
How to Use:
1) Check to be sure you are using the correct chart.
2) Choose your operating voltage.
3) Choose the minimum process temperature you
want to maintain. Note: If temperature is not shown,
pick the next higher option.
4) Follow chart across to the ambient Condition that
best match your area.
5) Use the watt-density shown for your part number
derivation.
Note:
The watt-density selected will
maintain the temperature indicated
at a minimum. Depending upon
actual ambient fuctuations, process
tubes size and number of tubes, the
maintenance temperature could be
higher.