HF scientific Micro200BW Turbidimeter - 0 -1000 NTU - Manual (Page 23)

Page 9
MICRO 200 BW 0 - 1000 NTU (5/05)
Rev. 3.1
the voltage. The correct fuse ratings are 5 x 20 mm 1A
fast acting for 120 VAC and 5 x 20 mm ½A fast acting
for 240 VAC.
A power switch is located to the right of the power cord.
WARNING: If power connection is to be hardwired,
place each analyzer on a separate circuit
breaker or switch to allow for service.
Observe all local wiring codes.
Figure 6
Changing Analyzer Voltage/Fuse
3. D/A Outputs - Voltage & Current
The full scale range of the recorder outputs, both
voltage and 4 - 20 mA, is determined by the upper and
lower limits selected by the user in the display param-
eters menu. Please note that either 4- 20 mA OR voltage
may be selected in the DISPLAY PARAMETERS
menu, but not both.
4. Recorder - Voltage
Recorder output voltage is selected at the terminal block
labeled ANALOG VOLTAGE (J6). Only one of these
voltages is to be selected at any time.
Recorder load for each voltage:
Terminal 1 0 - 10V 50000 ohms or greater
Terminal 2 0 - 1V 5000 ohms or greater
Terminal 3 0 - 100mV 500 ohms or greater
Terminal 4 Common
Twisted pair shielded cable, 22 AWG - 14 AWG, is
recommended. Tie the shield to the ground terminal the
recorder end (Do not connect shield to MICRO 200
BW analyzer).
5. Recorder - Current
A 4-20 mA current output is available. The connections
are made at the terminal block labeled Analog 4-20 mA
(J5). Use twisted pair shielded cable, 22 AWG - 14
AWG, with the shield tied to earth ground at the
recorder end. (Do not tie shield to ground at the
analyzer). The recorder load may be rated from 0-1000
ohms maximum. Terminal #1 is positive, terminal #2
is negative.
6. 4 - 20 mA Isolation
Isolation of the 4-20 mA recorder output may be
achieved by removing the jumper at J13. This proce-
dure requires removal of the rear cover assembly. Refer
to figure 7 to remove the rear cover and figure 8 for
location of jumper.
Figure 7
Analyzer Rear Cover Removal
Figure 8
Remove jumper J-13 to establish isolation
of the 4-20mA signal.
220-240V
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220-240V
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USE ONLY WITH 250V FUSES / EMPLOYER UNIQUEMENT AVEC DES FUSIBLES DE 250V
110-120V
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