DigiO3-2 manual

DigiO3-2 manual
Wall Mounted DigiO3 Ozone / Multi Parameter
Sensor
Ozone (±0.1%), Oxygen (±1.5%), Pressure (±0.5%),
Standard Flow Rate (±0.2SLPM), Ozone production (±2%), O2 & O3 Temperature (±0.2°C)
DigiO3, a modern breakthrough in Digital Signal processing Ultrasonic Ozone & Oxygen sensing
technology is manufactured to prevent oxidation, DigiO3 features a virtually unlimited longevity and
no need for field calibrations. There is no warm-up time, no dependencies on pressure and temperature
and no mechanical failures.
Concentration: DigiO3 measures Ozone & Oxygen concentrations within its respective O3 & O2
sensors.
Ozone production : DigiO3 displays Ozone production in units of grams per hour.
Flow Rate & Pressure: DigiO3 measures Standard Flow rate & pressure within its O2 sensor
Temperature: DigiO3 measures Temperature within its respective O3 & O2 sensors.
Outputs: LCD, 4 to 20ma, 0 to 5V, RS-232
Low O2 output Alarm: This Open Drain output connects to GND if Oxygen Concentration Drops
bellow 87%.
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Operation:
DigiO3 is designed to operate strictly in conjunction with Ozone Generators. To operate properly,
incoming gas stream (Air, Cylinder Oxygen, output of an Oxygen Concentrator), supplied to Ozone
Generator, must be connected to O2 sensor inlet. O2 sensor outlet is then connected to Ozone
Generator inlet. The Ozone Generator outgoing - Ozone enriched gas stream must be connected to O3
sensor inlet. In the event that the temperature of ozone enriched gas stream exceeds the temperature of
the environment by more than 5°C, the unit will begin to display correct readings within 5 minutes
after commencing gas flow through the sensor. Switch over between menus by pressing Display
(MENU) push button.
Menus
PO3 | O3 menu: Displays O3 % concentration by weight on left side, and O3 concentration in
grams per meter3 on right side of LCD display.
PSI | gPh menu: Displays Oxygen gas pressure in psig on left side, and O3 production in grams
per hour on right side of LCD display.
FLO | O2 menu: Displays O2 Standard Flow Rate in SLPM on left side, and O2 % concentration
on right side of LCD display.
tO2 | tO3 menu: Displays O2 temperature in °C on left side, and O3 temperature in °C on right side of
LCD display.
Specification
Size
5” x 4” x 1.25”
Weight
Power
Gas Ports
Accuracy
570g
Unregulated 9 - 30Vdc, 18ma
Female 1/8 NPT / Anodized Aluminum
Range
Direction of Flow
Ozone: 0-30% by weight; 0 – 476 g/NM3
Oxygen: 20.8%* - 100%
Flow: 0 - 100 slpm at 80 psia, 20°C; 0 - 20 slpm at 15 psia, 20°C
Pressure: 0 – 35 psi
O2, O3 Temperature: -45 to +70°C
Oxygen, Ozone – Unidirectional
Survival Temperature range
-85 to +85°C
Ozone concentration (±0.1%) by weight
Ozone Production (±2%)
Oxygen (±1.5%)*
Flow Rate (±0.2SLPM) *
Pressure (±0.5%FS)
Temperature (±0.2°C)
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Outputs
Display
Digital: RS-232
Analog: 4-20mA, 0-5V DC linearly proportional to 0 to 20% O3
LCD
O2 Alarm
Sinks up to 20ma to GND if O2 concentration drops below 87%
*
- If inlet gas is Air, Oxygen & Ozone Concentration measurement must be taken at Flow Rate of less than 10
LPM
4 to 20ma, 0 to 5V Ozone content analog Outputs
These two outputs produce Analog linearly proportional representation of the concentration of Ozone
from 0 to 20% weight by weight as follows:
At 0%: 4ma and 0V DC.
At 20%: 20ma and 5V DC.
Oxygen pressure
This DigiO3 parameter is measured by the DigiO3 within its O2 sensor.
Defining the Inlet source of O2
Inlet O2 must be defined due to variance between molecular weight of concentrator and cylinder gas.
DigiO3 is equipped to measure Oxygen concentration of all ordinarily supplied to Ozone Generators
inlet Oxygen sources as follows:
1. Oxygen source is pure air or from an Oxygen Concentrator - Con O2.
2. Oxygen source is from Tanks or cylinders - 100 O2.
DigiO3 factory default is to inlet gas from an Oxygen Concentrator - Con O2.
To switch between the latter two options, switch to FLO | O2 menu. Then hold the MENU button for
approximately 10 seconds. Then display will alternate between Con O2 and then 100 O2. Once MENU
button is depressed, inlet gas source is permanently remembered by the DigiO3.
Field Calibrations
The DigiO3 is Factory Calibrated. No Field calibrations are necessary or desirable. The following
adjustment procedures are provided to a technically savvy operator.
Adapt to normal operating conditions.
Without turning on the ozone generator, connect Oxygen feed gas to Inlet Oxygen port of
DigiO3. Then connect the outlet Oxygen port to Ozone generator inlet. Then connect Ozone
generator discharge to DigiO3 Ozone inlet port. Turn 0xygen flow on and establish normal
flow and pressure through the DigiO3 and the Ozone generator.
While holding down, the MENU button, power-up the DigiO3. Resulting DigiO3 O3 readings
will zero.
If needed, to return back to factory calibration, apply dry air to O2 sensor tube and perform step
#2 above.
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Adjust Ozone reading to a desired value:
DigiO3 is equipped with a limited user calibration capability. Ordinarily this function should not be
necessary as DigiO3 does not require re-calibration. This function is primarily intended to be utilized
by ozone technicians or other technical personnel for special reasons such as adverse temperature or
humidity or related to a specific Ozone Generator, which could be producing byproduct gases such as
O6 & O9.
Procedure: Ozone enriched gas of at least 3% must be flowing through the O3 sensor, and incoming
Oxygen flow through the O2 sensor. Follow the bellow described MENU Button level Calibration to
Adjust O3 to your expected level.
Result: This Ozone level change will proportionally effect all three Ozone display parameters.
Example: You desire that for a given Ozone Generator - your DigiO3 measures Ozone similarly to
your UV based analyzer. You adjust your Ozone output from your Ozone generator to more than 3%
by weight. Then you pass the resultant gas stream through the O3 sensor of the DigiO3. Then you
follow the bellow described MENU Button O3 level Calibration.
±0.1% accuracy:
The DigiO3 is factory calibrated to measure Ozone stream produced by a most common Corona
Discharge type Ozone Generator , which may contain various impurities. You can easily bring your
DigiO3 to measure Ozone at its unprecedented accuracy of ±0.1%. Background: Molecular weight of
Air - 29 and of Nitric Oxide (NO) – 30. If we apply dry Air to O2 gas stream and Nitric Oxide to O3
gas stream our Ozone display should read 7.7%.
Procedure: Purge O2 sensor with dry air; Then apply pure NO – Nitric Oxide (99.9% at 1 LPM) to O3
sensor. Then follow the bellow described MENU Button O3 level Adjustment to Adjust the O3 level to
7.7%.
O3 level Adjustment
switch to PO3 | O3 menu. Observe the O3 display. (Avoid touching the sensor tubes immediately
before or during this procedure.) Hold down the MENU button for approximately 10 seconds. Display
will show changing O3 concentrations. Release MENU button once the expected concentration is
reached. Once MENU button is released, desired Ozone level is permanently stored by the DigiO3.
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Sample UV based Ozone Analyzer vs. DigiO3 readings
200
190
DigiO3-2 [g/M^3]
180
170
160
150
140
130
120
120
130
140
150
160
170
180
190
200
UV based analyzer [ g/M^3]
RS-232
TTL level RS-232 Usart bit stream exits the DigiO3 via its board edge J2 connector.
To adapt to RS-232 levels external Digi-RS232 adapter (see below) is needed.
RS-232 Output Protocol
Baud rate: 19.2Kbits/sec
Parity: None
Bits: 8
Stop bits: 1
RS-232 Output Bit Stream
1.
2.
3.
4.
5.
Delimiter – A5H (hex)
[grams per hour] O3 – XX
[SLPM] Flow Rate - XX
[%] O2 – XX
[% weight by weight] O3 – XX
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Connectors:
J1 Power
Pin
1
2
Description
Power Input: 9 to 30V dc, 18mA
GND
J2 Analog Ozone outputs
Pin
1
2
3
4
Description
4-20ma
GND
0 to 5Vdc
GND
J3 Low O2 Alarm
Pin
1
2
Description
+5V
Open drain low Oxygen Concentration alarm. GND if O2
concentration drops below 87%
J4 R- S232 output connector. Connects to DigiRS232
Pin
1
2
3
4
5
6
Description
+5V
TXD
RXD
N/A
+Vin
GND
Additional RS-232 Feature:
RS-232 Program is available to download Ozone , Oxygen purities; Flow rate, to a ( DOS Mode ) PC http://dgflo.com/digio32.exe
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Power connection:
Remove rear plate. Protrude power wires through their rear plate window and then Connect
unregulated 9 - 30Vdc to to Power J5 Connector.
To DigiRS232
O2 in
O3 out
O3 in
4-20mA, 0-5V DC linearly proportional to 0 to 20%
O3
O2 out
Power
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
-7-
Dimensions:
3.9”
3.9”
6”
3.5”
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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Accessories
DigiRS232 Adapter
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
-9-
DigiLED
An accessory to DigiO3, this display provides a user with the ability to remotely display the
DigiO3 measurements in bright different colors: Blue, Green & Red. Connection is accomplished via
an ordinary 4 wire telephone (or other) cable , which delivers power and RS-232 bit stream from the
DigiO3 via DigiRS232 to DigiLED. No dedicated external power supply is necessary - DigiLED
receives its power supply from DigiO3 power source.
Specification:
Size
Segment size
Colors
RS-232 IN
RS-232 OUT
Weight
Power
P/N
3.5” x 2”
0.8”
Blue, Green, Red
Is received from the DigiO3
Continues to other DigiLED’s, thus only one DigiO3 connection is needed
15g
8-15V / 90ma
DigiLED-Blue; DigiLED-Green; DigiLED- Red
RJ11 Connectors
J1 – RS-232 IN
J2 – RS-232 OUT
Pin
Pin
Function
1
3
4
DC in
RXD
GND
Function
1
2
4
GND
TXD
DC out
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
- 10 -
DigiO3 Sensor Pressure Drop Vs. Volumetric Flow Rate
CMH2O
DigiFLO, INC., info@dgflo.com, http://www.dgflo.com/, Tel: 206-232-2193, Fax: 206-275-0229
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