Cool Drawer Dual Sensor
The Cool Drawer™ Dual Sensor is designed for use in critical processes where it is desirable to have asecond crystal in the vacuum chamber. Water cooled, cast stainless steel sensor body, two Cool Drawer
crystal holders and a pneumatically actuated shutter provide for a rugged sensor head with the extra
reliability of a backup crystal. A cleaner, more reliable vacuum system installation is possible as there areno coaxial cables inside the chamber.
Sensor Configurations
Two sensor configurations are offered: The standard version and the right angle version. The standard
version is designed for installation from the side or bottom of the chamber and the cooling tubes andthe crystal face are parallel. The right angle version is designed for installation through the top of thevacuum system and the water cooling tubes are perpendicular to the crystal face. In either configuration,
sensor head length can range from 10 – 66 cm (4 – 26 in.).
Feedthroughs
INFICON offers two choices for feedthrough types: a 1 in. bolt feedthrough or a CF40 feedthrough.
Feedthrough Connections
Cool Drawer Dual Sensors must be ordered in combination with a feedthrough. The sensor / feedthroughconnection can be either welded or made with compression fittings.
Compression fittings allow for easy adjustability without the need for brazing or welding. Sensor headlength is adjustable from 10 – 66 cm (4 – 26 in.). When selected with the welded CF40, the sensor isdesigned for high temperature processes where reliability is critical. Constructed of stainless steel andceramic materials, it is suitable for applications requiring high temperature bake out (see specifications).
The Cool Drawer Dual Sensor with the CF40 flange is pre-installed in a special two piece 7 cm (2 ¾ in.)
ConFlat® feedthrough. This allows the sensor head to be rotated independently of the flange andcircumvents the dimensional limitations of the CF40 flange. Sensor / feedthrough length can bespecified between 10 – 66 cm (4 – 26 in.).

AD VA N TAGE S
Dual crystals
Cool Drawer crystal holder■ No internal cables■ Crystal shutter■	Available with:– CF40 feedthrough– 2.54 cm (1 in.) bolt
feedthrough■■B akeable if ordered withwelded CF40 flange■ Adjustable length if orderedwith compression fittings■ S ensor / feedthroughcombinations available
welded to customer
specified lengths■

O RD E R I N G I N F ORMAT ION
Cool Drawer Dual Sensor (with conductor tubes)
CDD –Type of sensor (includes user manual, crystals sold separately)
Standard cool drawer....................................................................
(water lines parallel to crystal face)
Right angle cool drawer.................................................................
(water lines perpendicular to crystal face)

NOTE 1:
Orders for a WELDED sensor/
feedthrough combination aremeasured from center of the crystal
to the vacuum side (sealing surface)of the feedthrough. Once a welded
sensor order is confirmed, it can not
be cancelled.

AB

Length of sensor (see note 3)
Length: 10 – 66 cm (4 – 26 in.).....................................................

F

Feedthrough (see notes 2 and 4)
1 in. bolt ......................................................................................
CF40 ............................................................................................

3
4

Feedthrough connection (See Note 4)
Sensor welded to feedthrough ......................................................
Feedthrough equipped with Ultra-Torr compression fittings ...........
(allows for adjustable sensor length).
NOT AVAILABLE WITH CF40 FEEDTHROUGH
Welded sensor length....................................................................
(Use only when feedthrough connection is 7)(see note 1)
Not required when feedthrough connection option is 8.
Weld length in centimeters, 10 – 66 cm (4 – 26 in.).
*** Other lengths may be available: contact factory.
Other lengths will be considered a special order
and will be subject to additional cost and lead time.

–NOTE 2:Feedthrough configuration varies
depending on options selected(Type of feedthrough and connection).
Example: CDD-AF47 and -BF47 use atwo-piece hybrid feedthrough design
due to dimensional limits of a standard
CF40.
NOTE 3:For sensors ordered without a weld
connection (option “8”), tubes are
made to a length of approximately
76.2 cm (30 in.) for standard Cool
Drawer Sensors and approximately
66 cm (26 in.) for Right Angle Cool
Drawer sensors.

7810–66

NOTE 4:Cool Drawer Sensors are not available
without a feedthrough and must beeither welded or connected with
Ultra-Torr fittings.

The following combinations are not available: CDD-AF48, CDD-BF48
Examples of non-valid part numbers include all options with compression
fittings and a welded sensor length; for example, CDD-AF48-20, etc.

SensorSubstrate

Source shutter
FeedthroughTo 80-90 PSIG
air supply

750-420-G1
Solenoid valve

Controller or monitor(2) Short 6 in.
BNC cables(2) Oscillators (XIUs) to instrument
interconnect cable(2) Oscillators or XIUs

To crystal switch relay

NOTE: (2) indicates that two XIU or oscillator packages are required for a typical dual sensor installation.

2Cool Drawer Dual Sensor

S P E C I F I C AT ION S
CDD Series Cool Drawer Dual Sensor specifications
FinishStainless steel, gold plated Cool Drawer

Cooling water

0.2 GPM using 1/8 in. O.D. tube, 30°C max. (Do not allow to freeze)

CrystalIndustry standard 0.550 in. diameterAir supply

55 to 60 PSI regulatedElectrical connection

Two standard female BNCs on atmosphere side

1 in. bolt and compression fitting sealed terminations
Materials

304 stainless steel, Teflon®, ceramic, beryllium nickel, VITON®

Temperature

Operational environment to 300°C with water cooling or 165°C without

Mounting

1.015 in. ±0.010 in. diameter aperture

CF40 welded terminations
Materials

304 stainless steel, ceramic, beryllium nickel

Temperature

Operational environment to 450°C with water cooling or 200°C without

Mounting

Mates with 2 ¾ in. ConFlat® type flanges

S PA R E PA RT S LIST
P/N147401* 147206-2

Description* 084-026

Hex nut

Shutter* 084-064

Lockwasher

Bellows with 35 in. tube

* 084-205#4-40 x 3/16 in. Philips screw

147207

Bellows and cover assembly(includes all parts marked with *)800128#4 Lockwasher

800371

Shoulder screw

147402

Link800372

Washer* 147403

Actuator* 800416

6-32 x 3/16 in. set screw* 147406

Bellows support* 803313

Spring* 147407

Bellows cover

123223-2

Conduit brazed assembly – short pin* 147408

Threaded shaft

803102O-Ring for 5 port adjustable feedthroughSpacer803261

Washer for 5 port adjustable feedthrough147411* 147424

Bellows tube

NOTE: Items marked with * are included in 147207

3Cool Drawer Dual Sensor

D I M E N S I ON S
CDD-AF37-XX, CDD-AF38 and CDD-BF38
Cool Drawer Dual Sensor / feedthrough combinations
NOTE: Measurements in cm [in.]1.27[0.50]

5.08
[2.0]

1.8
[0.71].76[0.30]CDD-AF37-XX
Standard Configuration

6.35[2.50]CDD-BF38
Right Angle Configuration

1.27[0.50]

5.08
[2.0]

1.8
[0.71]
0.76[0.30]

4

Cool Drawer Dual Sensor

6.35
[2.5]

CDD-AF38
Standard Configuration

D I M E N S I ON S
CDD-AF47-XX and CDD-BF47-XX
Cool Drawer Dual Sensor / feedthrough combinations

CDD-AF47-XX
Standard Configuration
CDD-AF47-XX
Standard Configuration

1.27
NOTE: Measurements in cm[in.][0.50]

5.08
[2.0]
5.08
[2.0]

1.27
[0.50]
1.8[0.71]
0.76[0.30]

1.8[0.71]

6.35
[2.5]

0.76
[0.30]

1.64 [0.65]
X2
1.64 [0.65]
X2

4.70[1.85]
4.70[1.85]

6.35[2.5]#4-40 THD
FOUR PLCS#4-40 THD
FOUR PLCS[2.25][1.25] [2.50][2.25] 10.54[1.25] [2.50] [4.15]
10.54[0.12][4.15]
TYP[1.12]

VIEW A – A[0.12]
TYP[1.12]

VIEW A – A

D I M E N S I ON S

A

10 – 66[4 – 26]

1.80 [0.71]
A 0.76 [0.30] X2

CDD-BF47-XX
Right Angle Configuration
CDD-BF47-XX
Right Angle Configuration

10 – 66 COPPER GASKET[4 – 26]

1.80 [0.71]
0.76 [0.30] X2

COPPER GASKETTWO ELECT. CONDUITSTWO BNC CONNECTORSAIR TUBETWOELECT.
CONDUITS
TWO
WATER
TUBES

1 1/2 HEX NUT 1-20 UNS TWO BNC CONNECTORSWASHER 1in. ID
1 WITH ADDITIONAL KNIFE EDGE
2 3/4 in.1 CF/2 HEX NUT 1-20 UNS
WASHER 1in. ID
2 3/4 in. CF WITH ADDITIONAL KNIFE EDGE

AIRBRAZEDTUBE PORTS FIVE PLCS
TWO WATER TUBES

4.45[1.75]

BRAZED PORTS FIVE PLCS

A

4.45
[1.75]

A

Sensor length specification for CDD-AF37-XX sensor / feedthrough combination
NOTE: Measurements in cm [in.]1.27[0.50]
REF

10–66
10 – 66[4 – 26][4–26]

Centerline of crystal aperture

DI M E N S I ON S
Sensor length specification for CDD-AF47-XX sensor / feedthrough combination
NOTE: Measurements in cm [in.]10–66[4–26]
1.27[0.50]
REF

Centerline of crystal aperture

5Cool Drawer Dual Sensor

This gap is shown for clarity.
The actual dimension equals 0

D I M E N S I ON SSensor length specification for CDD-BF47-XX sensor / feedthrough combination
NOTE: Measurements in cm [in.]10–66[4–26]

0.38[0.15]
REFx

This gap is shown for clarity.
The actual dimension equals 0

Surface of Sensor Crystal

D I M E N S I ON SSensor length specification for CDD-BF37-XX sensor / feedthrough combination
NOTE: Measurements in cm [in.]10–66[4–26]

0.38[0.15]
REFx

Surface of Sensor Crystal

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Due to our continuing program of product improvements, specifications are subject to change without notice.
Cool Drawer is a trademark of INFICON. All other trademarks are the property of their respective owners.
cibe12a1-c©2017 INFICON