128 cHAPTER 7: Options and Accessories
Model 335 Temperature Controller
ES-2-20
Stycast® epoxy 2850-FT, Catalyst 9 (20 packets, 2 g each). Stycast® is a common, highly versa-
tile, nonconductive epoxy resin system for cryogenic use. The primary use for Stycast® is for
vacuum feedthroughs or permanent thermal anchors. Stycast® is an alternative to
Apiezon®
N Grease when permanent sensor mountings are desired.
ID-10-XX
Indium solder disks (Quantity 10). Indium is a semi-precious non-ferrous metal, softer than
lead, and extremely malleable and ductile. It stays soft and workable down to cryogenic tem
-
peratures. Indium can be used to create solder "bumps" for microelectronic chip attachments
and also as gaskets for pressure and vacuum sealing purposes.
ID-10-31 Indium Disks are 7.92 mm diameter × 0.13 mm (0.312 in diameter × 0.005 in)
ID-10-56 Indium Disks are 14.27 mm diameter × 0.127 mm (0.562 diameter × 0.005 in)
IF-5
Indium foil sheets (Quantity 5). When used as a washer between DT-470-CU silicon diode or
other temperature sensors and refrigerator cold stages, indium foil increases the thermal con
-
tact area and prevents the sensor from detaching due to vibration. It also may be used as a
sealing gasket for covers, flanges, and windows in cryogenic applications. Each sheet is
0.13 mm × 50.8 mm × 50.8 mm (0.005 in × 2 in × 2 in).
GAH-25
Apiezon® H grease, 25 g tube. It is designed for general purposes where operating tempera-
tures necessitate the use of a relatively high melting point grease. Melting point is 523 K
(250
°C). Can be removed using Xylene with an isopropyl alcohol rinse.
GAN-25
Apiezon® N grease, 25 g tube. General purpose grease well-suited for cryogenic use because of
its low viscosity. It is often used as a means of thermally anchoring cryogenic sensors as well as
lubricating joints and o-rings. Contains high molecular weight polymeric hydrocarbon additive
that gives it a tenacious, rubbery consistency allowing the grease to form a cushion between
mating surfaces. Melting point is 316 K (43 °C). Can be removed using Xylene with an isopropyl
alcohol rinse.
HTR-25
25 ) cartridge heater. The heater features precision-wound nickel-chromium resistance wire,
magnesium oxide insulation, two solid pins, non-magnetic package, and has UL and CSA com
-
ponent recognition. The heater is 25 ), 6.35 mm (0.25 in) diameter by 25.4 mm (1 in) long. The
25 ) rating is in dead air. With proper heat sinking, the cartridge heater can handle many
times this dead air power rating.
HTR-50
50 ) cartridge heater. The heater features precision-wound nickel-chromium resistance wire,
magnesium oxide insulation, two solid pins, non-magnetic package, and has UL and CSA com
-
ponent recognition. The heater is 50 ), 6.35 mm (0.25 in) diameter by 25.4 mm (1 in) long. The
50 ) rating is in dead air. With proper heat sinking, the cartridge heater can handle many
times this dead air power rating.
RM-½
Half-rack mounting kit for one Model 335 temperature controller. Half-length mounting panel
and mounting ears to attach one Model 335 to a 483 mm (19 in) rack mount space.
See FIGURE 7-2.
RM-2
Dual mounting shelf for two Model 335 temperature controllers. Mounting shelf to attach any
two 5.25 in tall half-rack instruments side-by-side on a 483 mm (19 in) rack mount shelf.
VGE-7031
IMI-7031 varnish (formerly GE 7031 Varnish) (1 pint can). IMI-7031 insulating varnish and
adhesive possesses electrical and bonding properties which, when combined with its chemical
resistance and good saturating properties, make it an excellent material for cryogenic temper
-
atures. As an adhesive, IMI-7031 bonds a variety of materials, has fast tack time, and may be
air dried or baked. It is also an electrically insulating adhesive at cryogenic temperatures and is
often used as a calorimeter cement. When soaked into cigarette paper, it makes a good, high
thermal conductivity, low electrical conductivity heat sinking layer. Maximum operating tem
-
perature: 423 K (150 °C).
Wire
Lake Shore cryogenic wire. Lake Shore sells the following types of cryogenic wire:
DT = Duo-Twist, MN = Single Strand, MW = Manganin, NC = Nichrome Heater,
ND = Heavy Duty, QL = Quad-Lead, and QT = Quad-Twist.
Lake Shore Coaxial Cable. Lake Shore sells the following types of coaxial cable:
CC = Ultra Miniature Coaxial Cable, SR = Semi-Rigid Coaxial Cable, CRYC = CryoCable.
*Accessories included with a new Model 335
†RoHS compliant
Model Description of Accessories
TABLE 7-4 Accessories
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