Hach-Lange BUHLER 2000 Water sampler - Manual (Page 13)

Installation
Page 13 Manual BÜHLER 2000/1029
Installing the apparatus
- We recommend to install the apparatus as close to the sampling point as possible. If installed
outside, the device should be positioned on a solid flat surface.
- The hose has to be laid with a constant fall from the sampler to the sampling point as lower
lying points can lead to deposits in the hose which may freeze in winter or result in cross-
contaminations.
- To fix the suction hose, we recommend to use the extraction unit available as accessory.
- Immerse the end of the hose at the sampling point with the open end facing downstream
(direction of flow) so that coarse matter and fibres cannot be forced into the suction aperture
Mains connection / external power supply
A battery charger (option) is available to charge the battery.
Mains powered float charge option
The integral storage battery can be charged by means of the mains powered battery charger. In case
of a higher energy demand, the battery charger can be permanently connected to the mains, so that
the integral storage battery of the sampler is left permanently on charge (float charge).
Integral storage battery
A fully charged battery will, under ideal conditions, be sufficient for up to 2000 sample extractions.
Charging the storage battery
The integral battery is a maintenance-free sealed lead-acid battery.
Charge the storage battery for at least 14 -16 hours prior to the first use.
This charging time is also necessary if the storage battery is empty. To avoid a total discharge,
a protective mechanism is built-in which automatically switches off the device when the voltage
is too low.
The storage battery cannot be overcharged as the battery charger switches to compensation charge
as soon as the battery is fully charged.
For longer periods of non-use, top up the charge regularly (connect the battery to the charger).
In any case, avoid a total discharge as otherwise the storage battery will be damaged.
Switch on / off
The device is switched on and off by the ON / OFF switch.
Option: mains operation. In case of exclusive mains operation, the device is switched on by means
of the mains plug of the battery charger.
Hose connection
The inlet hose is connected at the side of the housing upper part (screw thread ¾“).
Signal connections
The signal connector (e.g. for a flow meter) is in front of the control.
Connection to a PC
The sampler is connected to a PC by means of an interface cable (art. No. BM900021) which is
connected to the RS232 connector.