Hach AS950 Instalación Y Mantenimiento Básicos página 16

Fire hazard. Install a 15 A circuit breaker in the power line. A circuit breaker can be the
local power disconnect, if located in close proximity to the equipment.
Electrocution hazard. Protective Earth Ground (PE) connection is required.
Electrocution hazard. Make sure that there is easy access to the local power disconnect.
Connect the power cord on the AWRS or both power cords on the refrigerated sampler. The
refrigerator starts after a 5-minute delay. Use a power line filter or connect the power cord for the
controller to a different branch circuit to decrease the possibility of electrical transients.
5.4.2 Controller connections
Electrical shock hazard. Externally connected equipment must have an applicable
country safety standard assessment.
Figure 10 shows the electrical connectors on the controller.
Figure 10 Controller connections
1 Sensor 2 port (optional)
2 Thermal unit port (AWRS only)
3 Power supply port
4 Sensor 1 port (optional)
5.4.3 Connect a Sigma 950 or FL900
If sample pacing is flow based, supply the controller with a flow input signal (pulse or 4–20 mA).
Connect a Sigma 950 or an FL900 Flow Logger to the AUX I/O port.
As an alternative, connect a flow sensor to a sensor port. Refer to
Item to collect: Multi-purpose auxiliary full cable, 7 pin
16 English
D A N G E R
D A N G E R
W A R N I N G
W A R N I N G
5 USB connector
6 Rain gauge/RS485 port (optional)
7 Auxilliary I/O port
8 Distributor arm/Full bottle shut-off port
Connect a sensor on page 19.