Bruker NMR AV4 BSMS System, User Manual

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SPB
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14 SPB
14.1 Introduction
The SPB (Sensor & Pneumatic Board) is the enhanced and higher integrated replacement of
the former SLCB/x (Sample & Level Control Board) and the PNK board family (PNK3,
PNK3S, PNK5).
There are two versions of the SPB available: The basic version is used for Standard Bore
systems whereas the extended version supports wide bore NMR magnets and additional
features like the liquid nitrogen level sensor interface or control outputs for more than one
VPSB.
Low level hardware functions (e.g. sample sensor interfaces, safety circuits) are imple-
mented directly on the SPB, whereas higher level functions such as helium level calibration
and measurement, sample transport control (lift), sample rotation regulation (spin) or
pneumatic valve control for VT gases are provided by the software running on the ELCB.
The SPB pneumatics now include the gas flows for the variable temperature system (VT).
Integrated mass flow and pressure sensors provide accurate gas flow setting.
The new electronics are fully compatible to the well known sensors for helium or nitrogen
measurements or the sample detection electronics.
The SPB has additional interfaces for connecting up to 2 Variable Power Supply Boards
(used by the VT system to control the probe temperature) and novel digital accessory
sensors.
14.2 Configurations
Basically there are two variants, one for standard bore systems, and another one for wide
bore systems or systems with optional accessory (temperature or nitrogen level sensors).
Bruker Part
Number
Name Purpose
Z115191 BSMS/2 SPB SENSOR &
PNEUMATIC BD • Standard bore systems
• CryoProbe systems
• Fixed gas flow for probe
flushing
• Fixed gas flow for shim cooling
Z115192 BSMS/2 SPB-E SENSOR &
PNEUMATIC BD • Wide bore systems
• Regulated gas flow for probe
flushing
• Regulated gas flow for shim
cooling
• Support for all nitrogen level
sensors (e.g. for systems with
BSNL option installed before
2011)
Table 14.1: SPB Variants