RKI Instruments SDM-E2 - Manual (Page 11)

Description • 6
USB Cable
A Type A to Type B USB cable is provided with the docking station. It is used to
connect the USB port on the back of the SDM-E2 to a computer.
Figure 3: USB Cable
Air Filter, Sample Tubing, and Check Valve
A cylindrical particle filter with a short length of tubing is supplied with the SDM-E2 for
installation to the AIR fitting on the back panel. The filter keeps particulate
contamination out of the docking station.
Two types of sample tubes are included with the docking station. Two 3 foot lengths
of 3/16 inch ID polyurethane tubing are provided to connect the regulator on a
calibration cylinder to the GAS 1 and GAS 2 fittings on the back panel. In addition, a
10 foot length of 3/16 inch ID polyurethane tubing is provided for connection to the
exhaust fitting on the back panel to allow routing of the exhaust to a location such as
an open window where the exhaust can disperse.
WARNING: Do not use an exhaust tube that is longer than 30 feet. The increased flow
restriction caused by a longer tube may affect gas response and cause
inaccurate calibration and bump test results.
Type B, for connection
to USB port on the
SDM-E2's back panel
Type A, for
connection to
PC USB port
Exhaust Tubing, 10 feet
Particle Filter for Air Inlet
Calibration Gas Sample Tubing, 3 feet
Figure 4: Air Filter & Sample Tubing