Ulvac MBS-C, Instruction Manual

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CRYO METER MBS-C Instruction Manual
ULVAC CRYOGENICS INCORPORATED 5
4. Installation
4.1 Thermocouple Installation
◆ C YOGENIC THERMOCOUPLE (Chromel-AuFe 0.07%) R ◆ CRYOGENIC THERMOCOUPLE (Chromel-AuFe 0.07%)
<Without Thermal Anchor>
Place indium gasket below the 2
nd
stage of coldhead unit and fix with countersunk head screw
(M3x10L).
(Fix cupper block on the edge with pliers before tightening screws.)
<With Thermal Anchor (For models of caliber larger than 20 inches)>
Following the above step, fold indium sheet (30x40mm) two times along the longer side and
place it on sheath, and fix thermal anchor on the 2nd stage cylinder of coldhead with hexagon
socket bolt M4x12L and cerate nut M4.
Figure 4-1 Cryogenic Thermocouple Installation
◆
K THERMOCOUPLE (Figure 4-2)
Place indium sheet where 80K baffle is fixed.
Figure 4-2 Thermocouple Installation
Š Be sure to put the indium gasket on when installing the cryogenic thermocouple and the
K thermocouple.
Š Do not bend the sheath more than the diameter of the cylinder. (Be sure to bend with
hands)
Do not attempt to straighten bent sheath.
Do not place stress on the joint pa cupper block when putting on or
king off.
Š
Š
rt of sheath and
ta
Š Avoid the sheath from getting stuck when installing inner kits.
1.1
CAUTION
With Thermal Anchor Without Thermal Anchor
Countersunk head screw
Thermal Anchor Indium Sheet
Nut
Bolt
Sheath
Sheath
Cupper Block
Indium Sheet
Countersunk Head Screw
Hexagon Socket Bolt M4x12L
Spring Washer
Flat Washer
Indium Sheet
Mounting Hole
K Thermocouple and Crimping Terminal