B-RAX FAQ

What type of vacuum gauge sensors can the B-RAX 3400 operate?
The B-RAX 3400 is capable of operating one InstruTech BA601 UHV nude EB-degas hot cathode ionization gauge and two InstruTech CVG101 Worker Bee convection vacuum gauge sensors or one convection and one alternate device such as a capacitance diaphragm gauge.
What type of vacuum gauge sensors can the B-RAX 3300 operate?
The B-RAX 3300 is capable of operating one InstruTech BA602 nude or one BA603 glass enclosed hot cathode I2R ionization gauge and two InstruTech CVG101 Worker Bee convection vacuum gauge sensors or one convection and one alternate device such as a capacitance diaphragm gauge.
What type of vacuum gauge sensors can the B-RAX 3200 operate?
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Click image to enlarge

B-RAX 3200 can operate one InstruTech IGM400 hot cathode or one CCM500 cold cathode ionization vacuum gauge module. The B-RAX is also capable of operating up to two CVG101 worker bee convection vacuum gauges or one convection and one alternate device such as a capacitance diaphragm gauge.
What is the measurement range of the B-RAX 3400?
2.00E-11 to 1,000 Torr
2.70E-11 to 1,333 mbar
2.7E-09 Pa to 133 kPa
What is the measurement range of the B-RAX 3300?
4.00E-10 to 1.00E-03 Torr
5.30E-10 to 1.30E-03 mbar
5.30E-08 to 1.30E-01 Pa
What is the measurement range of the B-RAX 3200?
When used with the IGM400 hot cathode gauge:
1.00E-09 to 1,000 Torr
1.30E-09 to 1,333 mbar
1.30E-07 Pa to 133 kPa

When used with the CCM500 cold Cathode gauge:
1.00E-08 to 1,000 Torr
1.30E-08 to 1,333 mbar
1.30E-06 Pa to 133 kPa

Is the B-RAX rack-mountable?
Yes. The B-RAX is a half rack design. Optional mounting hardware is provided that can be used to install one or two B-RAX controllers side by side in a 19 inch wide rack.
How do I connect the B-RAX to the vacuum gauge sensors?
You need to acquire the cable assemblies offered by InstruTech.
What gauge cable lengths are available?
The standard cable lengths are 10 ft, 25 ft and 50 ft. InstruTech can provide longer cable assemblies if needed.
What is the power requirement of the B-RAX?
B-RAX 3400/3300: 20 to 28 Vdc, 200 W.
B-RAX 3200: 20 to 28 Vdc, 36 W.
What are the available output signals from the B-RAX?
6 setpoint relays, 3 analog outputs, Digital I/O, RS232 and RS485 serial communications.
Can the 3 analog outputs be assigned to any one of the gauges?
Yes. The analog outputs can be assigned to any one of the three gauges or a combination of the ion gauge and one of the convection gauges for wide range measurements.
Can the 6 setpoint relays be assigned to any one of the gauges?
Yes. They can be assigned to any of the gauges as programmed by the user.
What is Digital I/O used for?
IG filament on/off, degas on/off and emission current selection can be set remotely via signals from a PLC by applying momentary continuity to ground.
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