Hach ORBISPHERE 3650 ATEX Manuel D'utilisation De Base page 8

Figure 1 3650Ex Portable analyzer
1 Flow chamber
2 EC sensor
The series 3650Ex Intrinsically Safe Portable Analyzer is a self-contained instrument configured to
make oxygen or hydrogen gas concentration measurements with Electrochemical (EC) Sensors in a
hazardous area, in either liquid or gaseous samples.
The instrument is a portable unit and should be located convenient to the sample being analyzed.
5.1 Sensor installation
The electrochemical (EC) sensor connects to the instrument base through a 10-pin LEMO connector.
A locking nut holds the sensor in place. Generally, the sensor is shipped already installed in the
instrument. If this is not the case, for full installation instructions, please refer to the Sensor Manual
provided with your instrument.
Connection
8 English
3 RS232 port
4 Battery cap
Sensor Signal
Guard ring electrode
Not used
Temperature measurement
Counter electrode
Not used
Temperature measurement
Not used
Not used
Working electrode
Not used
5 Barometric pressure sensor
relief valve
LEMO-10 Pin
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10