Name: Bruker SmartCooler BCU I
Brand: Bruker
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Introduction

Z33119_2_003 13

3 Introduction

3.1 SmartCooler BCU I

The SmartCooler

BCUI is the successor model of the BCU05. The lowest temperature of

the cooled VT gas is with a BCU I is below -40°C up to 50Nl/min. The SmartCooler

BCUI

and also the BCU05 produce the cooling energy via one compressor refrigerator with

electrical power. This SmartCooler

is recommended for NMR experiments with a sample

temperature T

between 0 °C and T

. For easier reading, this cooling system is often

referred to as BCUI in this manual.

Figure3.1: SmartCooler BCUI

The BCUI is available with a transfer line length of 2m, 3m, 5m or 8m. The magnet type

defines which BCU I has to be ordered. Below is a list of the relative BCU I transfer line

lengths associated with the most common magnets (other magnets on request).

• 2m: 400US PLUS/R SB (Nitrogen free Z107439); all Ascend

(all frequencies!); all

USplus SB LH; all USplus SB ULH; all US SB ULH; 300 – 500 US SB LH; 300 & 400 US

WB LH; USplus WB LH; 92137 (500/54/AS Magnex); 91843 (500/52 Magnex); 40797

(500/51 AS Oxford); 47410 (AS500/54)

• 3m: 600&700 US SB LH; 500US WB LH, 800&850 US2 Plus SB (Compact)

• 5m: 600US WB LH; 800US SB; 900US SB; Z29704 (600/52 LL); 800 – 950 US2 SB;

Z29715 (500/52LL); M10910 (900 MHz/54 US2); 29563 (750/52 Magnex); O019

(500/52LL), O048 (400/54 Oxford)

• 8m: 1000US SB

For BRUKER magnets the following rules are valid to determine the minimal transfer line

length of a BCUI:

• Ascend

(all frequencies) and all other magnets ≤700MHz: Place the BCUI outside the

0.5T (5G) line and not less than 1m from the axis of the magnet.

• Magnets ≥750MHz: Place the BCUI outside the 5mT (50G) line and not less than 2.7m

from the axis of the magnet.

Below is shown a possible 400MHz magnet system with room temperature (RT) probe and a

VT gas cooling option with SmartCooler

BCUI.

Bruker SmartCooler BCU I User Manual

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