API-T400 Ultraviolet Absorption Ozone Analyzer， The T400 uses a validated ultraviolet absorption method to measure the concentration of ozone in the ambient air in a stable manner.

The Teledyne API microprocessor controlled Model T400 measures low concentration ozone in ambient air using Bill Lambert's law states that the intensity variation of absorbed light passing through a confined space is related to material properties. In T400, the intensity change of ultraviolet light passing through a cavity, which we call the sampling cavity, is measured in proportion to the concentration of ozone passing through. By using a switch valve, the concentration values of the sample gas containing ozone and the clean sample gas cleaned with ozone are alternately measured every three seconds. The results with temperature and pressure corrections are calculated to obtain a true and stable ozone measurement.

T400 records operational parameters and problem alerts, and also stores easily downloadable data if they slip out of bounds. Proprietary software allows for customizable data collection capabilities, which can be triggered conditionally or periodically, enabling users to pre diagnose and enhance data analysis by tracking parameters. And download the report to a USB drive or output it through an I/O port. The operator can also view real-time graphics through a one click touch screen.

API-T400 Ultraviolet Absorption Ozone AnalyzerTechnical Parameter

Small range: 0-100ppb Full range

Large range: 0-10000ppb full range (optional, supports dual range)

Measurement units ppb, ppm, μ g/m ³, mg/m ³ (optional)

Zero point noise<0.2ppb (RMS)*

Reading less than 0.5% when the span noise is above 100ppb

Detectable lower limit<0.4ppb*

Zero drift<1.0ppb/24 hours

Span drift<1% reading/24 hours

Response time T95<30s

1% of linear full-scale

Readings with an accuracy of less than 0.5% above 100ppb

Sampling flow rate 800cc/min ± 10%

Power requirements: 100V-120V, 220V-240V, 50/60 Hz

Analog output 10V, 5V, 1V, 0.1V (optional)

IZS parameter (optional) concentration: 1.0ppm

Concentration: 0.050ppm

Resolution: 0.5ppb

Repeatability (7 days): 1% of the reading

Initial accuracy: ± 5% target value

Recorder offset of 10%

Already includes I/O 1 x Ethernet: 10/100Base-T

2 x RS232 (300-115200 baud)

2 x USB device ports

8x electrically isolated digital output

6x electrically isolated digital input

4 x analog outputs

Optional I/O 1 x USB communication port

1 x RS485

4 x digital alarm outputs

Multi point RS232

3 x 4-20mA current output

Working temperature range 5-40 ℃ (certified by the US EPA)

Dimensions (height x width x length) 17.8cm x 43.2cm x 59.7cm

Weight 28 pounds (12.7kg)/30.6 pounds (13.8kg) including IZS

Certified US EPA EQOA-0992-087

EU: EN14625 TÜV Rheinland

QAL1 Certified: EN15267

MCERTS: Sira MC 050070/09

CNEMC: Quality (Recognition) No. 2015-028 Report