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202
2B Technologies 202 User Manual
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Model 202 Oz
one Monitor M
anual Rev. J-4
33
FIGURE 9-3
:
Printe
d Circuit Boar
d.
Pressure
Sensor
Serial Output
12
-V Power to
Board
Display
Lamp Power
Solenoid
Valve
Voltage Outpu
t
0-2.5 V
Temperature
Sensor
Detector
(Photodiode)
Microprocesso
r
5-V Regulator
Select Switch
Power Sw
it
ch
External
Analog Inputs
Air Pump
Clock Battery
Heater
Flow M
eter
Current Output
4-20 mA
(optional)
4-20 mA soc
ket
(optional)
SW1 (Reset)
SD Logger
SW2 (Program
Enable)
40
42
Table of Contents
Default Chapter
2
Table of Contents
2
Identification Records
4
Printing History
5
Warranty Statement
6
Warnings
8
1 Ozone Monitor Introduction
9
Theory of Operation
9
Calibration Overview
11
Use of Dewline to Remove Humidity Interference
11
2 Model 202 Ozone Monitor Specifications
12
3 Installation and Operation
14
Shipping Box Contents
14
Installation of the Ozone Monitor
14
Measurement of the Zero Offset
15
Collecting Data from the Analog Output
15
Collecting Data over the Serial Port in Real Time
15
Data Averaging and Data Logging Using the Menu
17
Menu Definitions and Menu Tree
17
Selecting the Menu
18
To Log Data Using the Internal Data Logger
19
To Stop Logging Data Using the Internal Data Logger
20
To Transmit Logged Data to a Computer Using the Serial Port
20
To Log Data Using the SD Card
21
To Average Data
22
To Set the Calibration Parameters
22
To Set the Time and Date
24
To Change the Output Baud Rate
24
To Turn the Analog Inputs on and off and Change the Analog Output Scaling Factor
24
To Turn the Display Light on and off
25
To Change the Units for Internal Temperature, Pressure, and Ozone
25
To Test the Lamp Voltage and Precision
26
To Read the Number of Hours of Ozone Monitor Use
26
To Turn the Optional Lamp Heater on and off
26
To Read Flow Rate on the Display
26
4 Accessing the Serial Menu
27
5 Maintenance
28
6 Calibration
29
Introduction
29
Ozone Standards
29
Equipment Required
29
Instrument Preparation
30
Calibration Setup Preparation
30
Setup Check
31
Ozone Loss Test
31
Linearity Check
31
Intercomparison Test
32
Calibration Procedure
32
Instrument Preparation
32
Measurement of Zero Air
32
Measurement of Ozone Standards
32
Calibration Curve
33
7 Periodic Zero and Span Checks
34
8 Troubleshooting
35
9 Labeled Instrument Photos
38
10 Parts List
43
11 Service Log
44
Appendix A: Using the 2B Technologies Display and Graphing Software
46
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2B Technologies 202 Specifications
General
Brand
2B Technologies
Model
202
Category
Monitor
Language
English
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