RKI Instruments Data Cal 2000 - Manual (Page 11)

Description • 6
Back Panel
The power switch is a rocker switch and is located in the upper right
corner of the back panel. The docking station is on when the upper half of
the switch, the “1” position, is pressed in, and off when the lower half of
the switch, the “0” position, is pressed in.
All the gas fittings are located on the back panel. They are hose barb
type fittings that accept 3/16” inner diameter (ID) tubing. At the bottom
left of the back panel is the GAS OUT fitting. This fitting is used to route
calibration gas from the docking station to the docking modules. To the
right of the GAS OUT fitting is the AIR fitting. This fitting is used to draw
fresh air while the Data Cal 2000 is performing a zeroing operation during
bump testing or calibration.
To the right of the AIR fitting are five additional fittings of the same type
labeled GAS1, GAS2, GAS3, GAS4, and GAS5. These fittings are used
to connect up to 5 calibration gas cylinders that are defined using the
software. Usually, only one or two calibration cylinders will be needed.
Typical gas cylinders needed are a 4-gas mix of %LEL CH
4
/O
2
/CO/H
2
S
or 3-gas mix of %LEL CH
4
/O
2
/CO and a %volume cylinder of CH4 (if the
%volume CH
4
TC sensor is installed on a GX-2003).
There are three connectors on the back panel. A DB-15 (15 pin)
receptacle in the upper left corner is used to connect the docking station
to the docking modules. It is labeled MODULE. A DB-9 (9 pin) plug to the
right of the MODULE connector is used to connect the docking station to
the serial port of a computer. It is labeled PC(RS-232C). A 3-pin
MODULE
PC(RS-232C)
GAS OUT
AIR GAS1 GAS2 GAS3 GAS4 GAS5 FUSE(5A)
AC IN
AC100V-AC240V
POWER
Fan Grill
Figure 3: Data Cal 2000 Back Panel