Thermal Desorption Conditioning System
C18
Scientific Instrument Services, Inc.
™
Phone: 908-788-5550
www.sisweb.com/catalog/08/C18
Part No.
Description
781051A
Part #781051A--Click to order
Current Price: $4405.00
Unit of Measure:
EA
Est. Ship Weight=30 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Desorption Tube Conditioning Oven,
Conditions 6 sample tubes simultaneously,
6 rotameters, programmable temperature controller,
6 desorption tube handles,
2 needle handles and seals
781013F
Connection Handle for Desorption Tube
781014F
Connection Handle for needle
781015
Part #781015--Click to order
Current Price: $13.00
Unit of Measure:
EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=440
Graphite top seal with metal insert
781007
S.S. Cap with 0.040" hole for
conditioning GLT tube
Desorption Tube Conditioning System
Theory of Operation
Electrical Specifications
Power Requirements
Voltage - 110 VAC, grounded
Current - 10 amp maximum
Fuse Sizes 10 amp each
Temperature Controller
Heater Circuit, Accuracy +/-0.1% of full scale reading
Temperature Range - up to 350°C
Input - Platinum Resistance Thermometer
Digital Readout 3 or 4 digit
Programmable - Autocalibration temperature controller
Temperature protection circuitry for maximum temperature
and maximum case temperature
Gas / Flow Specifications
6 adjustable Flow bubble rotameters
Maximum pressure - 60 P.S.I.
Quick disconnects for each sample
Gases - either high purity helium or nitrogen
Weight and Dimensions
Weight - 12 pounds
Size - 9" wide x 9" deep x 13" high
Warranty - 90 days parts and labor
Needle Seal
Handle
Graphite and Graphitized
Vespel Seals
T
he Desorption Tube Conditioning System is used for
the flow conditioning of both empty and packed glass-
lined stainless steel (GLT) desorption tubes as well as
for the flow conditioning of the desorption tube needles. A high
purity gas such as helium or nitrogen is used to purge the
packed desorption tubes and needles while they are baked out
at elevated temperatures. By proper conditioning of the des-
orption tubes with adsorbents and needles, no foreign contami-
nants will interfere with or contribute to the composition of the
samples being analyzed. Sample “memory effects” due to cross
contamination will be eliminated.
The Desorption Tube Conditioning System consists of six
adjustable flow rotameters (0-50 ml/min) and a heater block with
six ports (I.D. 0.40" x 4.0" deep) for cleaning of six desorption
tubes or needles simultaneously at temperatures up to 350°C. A
Watlow precision programmable temperature controller pro-
vides the heater circuit to heat the heater block and permit the
programming of the temperature at which the tubes are to be
conditioned. Temperature programs of up to six steps with var-
ious ramp cycles and hold times can be programmed into the
controller for the unattended conditioning of the desorption
tubes. Programs are stored in the system's memory.
A single electrically operated solenoid valve (Gas Valve)
turns off or on the gas to all the ports via the Gas Switch on the
front panel. On the top of the Conditioning System six quick dis-
connects connect to 1/8" flexible nylon tubing to provide gas
flow through the desorption tubes and needles during condition-
ing. When the quick disconnect is removed, the gas flow is
automatically closed to that port.
Two types of handles are included with the Conditioning
System. Six desorption tube handles are included for the con-
ditioning of the desorption tubes and two desorption needle han-
dles are included for the conditioning of desorption needles.
Each of the handles consists of a stainless steel hollow center
shaft with a PTFE insulated handle. Additional handles are also
available. Graphite seals with metal inserts are used for sealing
the desorption tubes to the desorption tube handles, due to their
high temperature properties up to the maximum 350°C temper-
ature limit of the system. Other seals could be used at lower
temperatures.
6 Tube Desorption Tube Conditioning
System For Cleaning & Baking Out
Thermal Desorption Tubes.
Conditions 6 Tubes or
Needles at One Time
S.S.
Desorption
Tube Handles
for
Conditioning
Tubes
(Part # 781013)
S.S.
Desorption
Needle
Handles for
Cleaning
Needles
(Part # 781014)
Accessories for
Desorption Tube
Conditioning System
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