SPB
150 / 234 H172203_1_001
Digital Nitrogen Level Sensors introduced in 2011 do not require a SPB-E anymore. The
digital sensors are connected typically to AUX ports on the VPSB(-DC). However, the SPB-E
support both analog and digital nitrogen level sensors. For details see Nitrogen Level Sensor
[}195].
14.3 Technical Data
The boards differ in the number of interfaces and additional software regulated gas flows:
SPB SPB-E Unit
Gas Flow VT 0..2000 0..3000 l/h
Gas Flow Probe Flush 300 (fixed) 0..600 l/h
Gas Flow Shim Cooling 1800 (fixed) 0..3000 l/h
Gas Flow Spin SB 0..720 0..720 l/h
Gas Flow Spin WB n/a 0..1440 l/h
Gas Flow Sample Lift 0..6000 0..9000 l/h
Helium level sensor (HELIUM
LEVEL)
included
BST sensor interface (SAMPLE
CONTROL)
included
a
BACS interface (SAMPLE
CHANGER)
included included
Analog and digital liquid nitrogen
level sensor interface
(NITROGEN LEVEL)
n/a included
Maximum active temperature
control channels (VPSB CTRL)
b
2 4
Auxiliary digital sensor interface
(AUX)
n/a 1
a
Old style shim upper parts (SOT72) using Z12084 CABLE ADAPT BSMS/SOT72 can
be connected to a SPB(-E) ECL02.03 and newer. Because these shim upper parts do not
include a sample up light barrier, reduced functionality (sample lift speed, display) will
result.
b
Variant SPB has 1 VPSB CTRL interface to control 1 Z115193 VPSB (dual heater
power supply), variant SPB-E has 2 VPSB CTRL interface to control 2 Z115193 VPSB for
total 4 heater channels.
Table14.2: Overview SPB vs. SPB-E
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