Vilter VSM 71-701, Operation And Service Manual

Page: 195 / 244

17
FAST HEAT, INC.
THERMOCOUPLE LOCATION
CARTRIDGE HEATERS
BOTTOM GROUNDED
For fast response, heater is positioned in a
blind hole or where material flows past or
encompasses the heater.
The end disk is always welded in place.
Machined flat up to
1
⁄
2
“ (12.7 mm) dia.
BOTTOM UNGROUNDED
Where circumstances are such that an
ungrounded thermocouple is required.
CENTER UNGROUNDED
The thermocouple is positioned internally
and ungrounded to monitor the heater
temperature.
Generally used in research and
development applications.
REMOVEABLE THERMOCOUPLE
The thermocouple is inserted down a
hypotube for easy removal.
T/C AT BOTTOM
T/C AT CENTER
HTR GROUNDED UNGROUNDED
DIA. BOTTOM CENTER BOTTOM CENTER
1 /
4
” (6.4 mm) Y N Y Y
5
/
16
” (7.9 mm) Y N Y Y
3 /
8
” (9.5 mm) Y Y Y Y
1 /
2
” (12.7 mm) Y Y Y Y
5 /
8
” (15.9 mm) Y Y Y Y
T/C AVAILABILITY
All heaters shown are Hi-Temp
10” leads, type “J” T/C standard,
type “K” T/C is available.
T/C available in all Standard Cartridge
heaters. Located at bottom ungrounded
and center ungrounded.
HI-TEMP T/C LOCATION AVAILABILITY
Hi-Temp
Hi-Temp
Hi-Temp
Hi-Temp
Hi-Temp
?
CENTER GROUNDED
Selected when a fast response is required.
The thermocouple can be located in any
position along the length of the heater.
Standard location is midway along the
length with approximately
1
⁄
4
” (6.4 mm)
cold section on either side of the junction.
Not available on 1/4” diameter heaters.
REMOVEABLE THERMOCOUPLE