Hach ORBISPHERE 3650 ATEX Manuel D'utilisation De Base page 11

• A model 32511 cable for connection between the 3650EX instrument LEMO-6 connector and the
interface box.
• A model 32538 cable for connection between the interface box and the PC.
The connections should be made as indicated in
Note: When the Interface Box is connected to the 3650Ex instrument, this also acts as a power supply to the
instrument and disconnects the internal battery power source.
Connection Pseudo RS232 Signal
Transmitted data (TTL-TXD)
Received data (TTL-RXD)
Not used
Not used
External voltage input (used with the model 29122 interface only in safe area)
Ground
Interface box to instrument 9-Pin female connector
Pin 2 TTL Transmitted data (TXD)
Pin 3 TTL Received data (RXD)
Pin 5 Power supply (V+)
Pin 9 Ground
Other pins not used
Note: If you use an adapter for the connection to the PC, make sure it is designed for this purpose and, thus, has
all nine pins accessible. Some 25-to-9 pin adapters are supplied for specific use, such as a mouse, and these may
have only certain pins available.
5.6 Installation checklist
5.6.1 Instrument clock setting
If you use the instrument to store measurements for downloading to a PC, you should verify the date
and time settings of the instrument's internal clock, as described in
5.6.2 Electrochemical sensor
Before making any measurements, for GA2800 ATEX sensors perform the preparation procedure in
the GA2x00 Sensor Manual. For other ATEX sensors perform the sensor service procedure as
described in the EC Sensor Manual.
5.6.3 Flow chamber
The model 32007E flow chamber's inlet and outlet should be free of any obstructions. It is mounted
by means of the sensor's collar, as shown in
surface prevents twisting during operation.
When switching from liquid to gaseous samples, ensure that the sensor membrane is dry. Ensure
that the gas from the exit tube of the flow chamber (in gaseous mode) is released at atmospheric
pressure and that it is constant.
Figure 4.
Interface box to PC 9-Pin male connector
RS-232 Transmitted data (TXD)
RS-232 Received data (RXD)
Ground
Not used
Figure 2 on page 9. A guide pin on the flow chamber
Clock settings on page 22.
LEMO-6 Pin
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
English 11