Section 7 Accessories And Attachments; Model 32311 Flow Meter; Model 32939 External Power Supply - Hach ORBISPHERE 3654 User Manual

Section 7

7.1 Model 32311 flow meter

A flow meter is available as an option, to attach to the top of the flow chamber, instead of the
flow rate adjustment valve usually supplied. This can be used to set an accurate flow rate of the
sample. This is especially useful with small volume packages such as small cans and bottles.
This flow meter simply replaces the standard adjustment valve, as illustrated in
Figure 10 Standard adjustment valve (left) and flow meter (right)
If using this flow meter option, you must ensure that you first recalibrate the instrument with the
flow meter attached before you take any measurements. In addition, any measurements made
must be made using exactly the same flow rate setting as used for the calibration.
The recommended flow rate should be set at 50%, though a minimum flow rate (for small
volume packages) of 30% can be used. To set the flow rate, adjust the knob at the top of the
flow meter until the center point of the bead indicates the desired flow rate.

7.2 Model 32939 external power supply

Provided you have a clean external power supply, you can connect the power directly to the
instrument, using this accessory, via the RS-232 port on the instrument. Refer to
The male LEMO-6 (to the right on the illustration above) attaches directly to the instrument. The
female LEMO-6 (to the left on the illustration above) can be used to attach the instrument to
your PC. The other connection is to the transformer (illustrated to the top) which in turn is
connected directly to your power supply.
Accessories and Attachments
Figure 10 below.
4 on page 9.
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