Bruker BioSpin BCU-Xtreme Technical Manual

BCUXtreme

External Temperature Controller

Technical Manual

Bruker BioSpin

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Version

NMR Spectroscopy

001

The information in this manual may be altered without notice.

BRUKER BIOSPIN accepts no responsibility for actions taken as a result of use of
this manual. BRUKER BIOSPIN accepts no liability for any mistakes contained in
the manual, leading to coincidental damage, whether during installation or
operation of the instrument. Unauthorised reproduction of manual contents,
without written permission from the publishers, or translation into an other
language, either the entire manual or a part of it, is forbidden.

This manual describes the units as they are at the date of printing. On request, the
manufacturer shall supply circuit diagrams, lists of components, descriptions,
calibrating instructions and any other information for use by qualified personnel of
the user, in charge of repairing the parts of the unit which have been stated by the
manufacturer to be "repairable". Such supply shall in no event constitute
permission to modify or repair the units or approval of the same.

All rights reserved for the units, circuits, processes and appellations mentioned
herein.

This unit is not designed for any type of use which is not specifically described in
this manual. Such use may be hazardous.

This manual was written by

Patrick Krencker

This manual was edited and desktop published by

Dominique Wurtz

© January 25, 2010: Bruker BioSpin

Wissembourg, France

P/N: Z31917

DWG-Nr: Z4D11185

For further technical assistance on the BCU-Xtreme unit, please
do not hesitate to contact your nearest BRUKER dealer or
contact us directly at:

BRUKER BioSpin
34 rue de l’Industrie
F-67166 Wissembourg Cedex
France

Phone: + 33 388 066 000
Fax: + 33 388 736 820
Email: [e-mail]
Internet: www.bruker.com

Contents

Contents ............................................................................ 3

1 Device Information ............................................................. 5

1.1 Introduction ........................................................................................ 5

1.2 Safety ................................................................................................. 5

1.3 Controller Installation .......................................................................... 5

1.4 Hoses Connections ............................................................................. 6

1.5 Device Operation ................................................................................ 6

1.6 Getting Started ................................................................................... 7

1.7 Technical Specifications ...................................................................... 7

Figures .............................................................................. 9

Tables ............................................................................... 11

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Contents

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Device Information 1

1

Introduction 1.1

This document contains technical information about the "BCU-Xtreme External
Temperature Controller" (P/N:W1215349).

The temperature of the gas delivered by the BCU-Xtreme (P/N:W1212749) may
be to too cold for some experiments or some NMR probes, requiring strong
heating of the cold gas. The new External Temperature Controller Device
(P/N:W1215349) was designed to gradually adjust the outlet temperature of the
BCU-Xtreme from -80°C to nearly 0°C. It is compatible with all BCU-Xtreme
manufactured until 2010.

Safety 1.2

The device is slightly magnetic. The controller must always be handled and
installed at a safe distance from a magnet.

Controller Installation 1.3

The controller is delivered with several meters of 6mm and 8mm HDPE plastic
hoses which are connected to the BCU-Xtreme. Optimal controller placement is
near the BCU-Xtreme or on top of the cooling unit.

Main gas inlet

Temperature
control knob

Figure 1.1. External temperature controller device top view

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Device Information

Variable outlet temperature

-80°C to approx. 0°C

Probe adapter

By-pass inlet

MAIN GAS

INLET

Multi-turn knob

for outlet

temperature

control

To probe adapter

To BCU gas in

10%-100% of

inlet gas flow

W1215349

To By-pass out

BCU-XtremeT° Control

GAS IN

BY-PASS OUT

90%-0% of inlet

gas flow

Figure 1.2. Connections of Controller

Hoses Connections 1.4

1. Connect the dry gas supply hose from the temperature control unit BVT or
MAS unit to the "MAIN GAS INLET" port of the device with 8mm tubing.

2. Connect a piece of 8mm tubing between port "To BCU GAS IN" and "GAS IN"
of the BCU-Xtreme.

3. Connect a 6mm tubing between port "To By-PASS" and "to BY-PASS OUT"
of BCU-Xtreme.

4. Connect a 6mm tubing between port "To PROBE ADAPTER" and "PROBE
ADAPTER" of BCU-Xtreme.

Check all hoses connections for leaks.

Device Operation 1.5

The outlet temperature control knob is located on the lid.

The knob allows you to gradually adjust the outlet temperature from -80°C to
approximately to 0°C. The knob actuates a couple of valves that divide the inlet
gas flow between the BCU-Xtreme and the adapter located at the end of the
transfer line. The cold gas mixed with room gas at temperature gives the desired
result.

The gas flow delivered to BCU-Xtreme can be varied between 10% to 100% of
the device inlet gas flow and the gas flow to the BCU-Xtreme adapter varies
inversely from 90% to 0%.

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Getting Started

Warning : A minimal gas flow (> 1l/min) must always pass through the BCU­Xtreme, otherwise an error occurs and the compressors will be stopped.

When the temperature control knob is turned completely towards "WARMER"
position, there is still a fraction of the gas flow that passes through the BCU­Xtreme. However, if the gas flow through the BCU-Xtreme is too low it causes the
shutdown of the compressors. If this happens, turn slightly back the knob
towards position "COLDER" to increase the gas flow through the BCU-Xtreme.

When the knob is fully in "WARMER" or "COLDER" position do not force or
damage may occur to the gas mixer valves.

Getting Started 1.6

It is recommended to place the temperature knob in the intermediate position
between "COLDER" and "WARMER" and then start the operation of the BCU­Xtreme to avoid startup problems (low gas flow).

Wait 20-30 minutes until the cooling power is steady. The outlet temperature can
be changed with the control knob after the initial cooldown phase.

If the BCU-Xtreme is used even after a longer stop, there is no need to readjust
the knob position before restarting the unit.

Technical Specifications 1.7

Table 1.1. Device specification

Dimensions Height : 60 mm

Width : 160 mm
Length : 240 mm

Weight 800 grs

Inlet gas flow 10 l/min minimal up to 50 l/min If the inlet gas flow is too low,

Gas connections 8 mm and 6 mm Quick coupling type

Inlet gas pressure 5 bar max. Dry air or dry nitrogen gas

Temperature control range -80 °C to 0 °C approx. With BCU-Xtreme (P/N:W1212749)

Stainless steel enclosure

the BCU-Xtreme may be shutdown

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Device Information

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Figures

1 Device Information 5

Figure 1.1. External temperature controller device top view ..................................... 5

Figure 1.2. Connections of Controller ...................................................................... 6

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Figures

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Tables

1 Device Information 5

Table 1.1. Device specification .............................................................................. 7

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Table s

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End of Document

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