Eco Sensors
Ozone Analyzer, Model UV-100
8
Division of KWJ Engineering Inc.
User Manual, Rev. 2.0
[email protected] or (800) 472-6626
External Outputs (Ext):
The UV-100 includes analog voltage & current outputs as well as a relay that may be used to interface
with other devices. Select
Ext
from the I/O submenu and push the
Function
Knob. The submenu will
appear:
Ext Menu
REL1 REL2 V_OUT
Relays (REL1 & REL2):
To set the ON/OFF limits of the relays, select
REL1
or
REL2
from the I/O submenu and push the
Function
Knob. The settings will appear:
On= 0009.90 ppmv
Off= 0010.10
To change a value, rotate the knob to move the cursor to the value you want to change, push the knob
to activate the value, rotate the knob to change the value, and then push the knob again to store the
value. You may then rotate the knob to select a different value and repeat the process.
With the settings in the example, the relay will close (pass current) until the ozone concentration
exceeds 10.10 ppm. Above this concentration the switch relay will open. The relay will not close again
until the ozone concentration drops below 9.90 ppm. In this way, for example, ozone concentration from
an ozone generation could be controlled in the range 9.90 to 10.10 ppm.
Physical connections to the relays are made via the supplied screw connectors. When viewing the
connectors from the rear of the instrument, REL1 is on the bottom and REL2 is on the top. The right
terminal is normally open (N/O), the center terminal is common (COM), and the left terminal is normally
closed (N/C).
Analog Voltage and Current Outputs (V_OUT):
To change the scaling of the analog voltage and current outputs, select
V_OUT
from the I/O submenu
and push the
Function
Knob. The settings will appear:
2.5V=0001.00 ppm
20mA=0001.00 ppm
To change a value, rotate the knob to move the cursor to the value you want to change, push the knob
to activate the value, rotate the knob to change the value, and then push the knob again to store the
value. You may then rotate the knob to select a different value and repeat the process.
