Category
UV-VIS Absorption Method

UV-VIS Absorption Method

Scientific Product
Assistant Buniness Unit Manager : Miss. Rotsukon Chanseeharat
Tel : 081-988-2819
E-mail : rotsukon@pico.co.th
Admin
Tel : 02-939-5711 ext. 611
E-mail : scientific@pico.co.th

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Overview

The OPSA-150 is a new organic pollutant monitor that uses HORIBA’s proprietary Rotary Cell Length Modulation, a measuring technique incorporating 25 years of expertise.
The unit can be used as an organic pollutant monitor at drainage systems for determining compliance with COD monitoring regulations, for monitoring quality of water measuring levels of organic matter at water supply intakes, and as an organic monitor on process lines (phenol meter).

*Pole mount, outdoor cover, and analysis panel are available as options.

Features

Sensor that makes full use of Rotary Cell Length Modulation (Patent pending)

·         Zero drift correction is perfomed in every cycle of measurement. This correction can eliminate the effect of any interference on cells.

·         Cell length modulation provides readings from multiple measurements, making available results from various cell lengths. This allows the single device to make measurements on a large range of concentrations from as low as 0 to 0.1 Abs, up to 0 to 5.0 Abs.

Specifications

Name Organic Pollutant Monitor
Model name OPSA-150
Measurement items UV absorbance, VIS absorbance, Converted COD level, Converted TURB level
Principle 2 light path 2 wavelength cell length modulation
Measurement wavelength UV: 253.7 nm, VIS: 546.1 nm
Construction of analysis section Rotary type
Range (Equivalent to a cell length of 10 mm) UV absorbance / VIS absorbance
0 to 0.1 Abs – 0 to 5.0 Abs (Can be set 0.1 Abs increments)
Resolution 0.0001 Abs (Can be set to 0.001 Abs)
Repeatability Within ±2% of full scale (within ±5% if full scale is 2.6 to 5.0 Abs)
Linearity Within ±2% of full scale (within ±5% if full scale is 2.6 to 5.0 Abs)
Stability Within ±2% of full scale in 24 hours (within ±4% in 24 hours if full scale is 2.6 to 5.0 Abs)
Response time T 90 within 1 minute (flow rate of 5 L/min)
Cleaning method (cleaning cycle) Automatic cleaning via wipers (continuous cleaning)
Display methods LCD display: 320 x 240 monochrome crystal display with backlight (touch panel type)
Display details: UV absorbance, VIS absorbance, UV-VIS absorbance (Absorbance can be changed to absorption constant (SAC: m-1), Converted COD level, Converted turbidity level
Calibration method Solution calibration (calibration solution inserted in ampule) via zero solution, span solution (single touch calibration)
Sample conditions Temperature 2 to 40°C*
Sample flow rate Minimum 2 L/min, Maximum 20 L/min
*Use a heating device to prevent sample freezing.
Ambient conditions Ambient temperature: 0 to 40°C, Ambient humidity: 85% or less
Analog output No. of outputs 3 outputs (standard)
Type Up to 3 can be chosen from UV absorbance, VIS absorbance, UV-VIS absorbance, Converted COD level, and Converted TURB level outputs
Specification DC 4 – 20 mA, or DC 0 – 16 mA, isolated output (no isolation between each channel), maximum resistance load: 600Ω
Alarm and status outputs No. of outputs 6 outputs (standard)
Type Up to 4 can be chosen from power failure, maintenance (standard and fixed), batch alarm, COD maximum limit alarm, TURB limit alarm (standard), light source error, sample failure, cleaning motor error, and analyzer error outputs
Details Power failure…occurs when power fails Total alarm…cleaning motor error, light source error, analyzer error Maintenance…occurs when entering maintenance or correction mode, or when the maintenance switch has been turned on
Specification Dry contact output, NO contact
Contact rating: AC 125 V 0.3 A, DC 30V 1 A (with resistance load) Each output has an independent COM interface
Contact input No. of inputs 2 inputs (standard)
Type Sample failure float switch input, time correction input
Specifications No-voltage contact input (can connect to open collector), isolated input
On resistance: Maximum 100Ω, Open voltage: DC 26 V, Short circuit current: 13 mA
Communication Interface: RS-232C Compatible Communication speed: 19200 bps
Data memory Values of measurement items are stored in the main unit”s data memory. Data can also be transferred to a Compact Flash card.
Memory interval 1 minute or 1 hour
Memory save time Every hour*
Data memory capacity 1 minute intervals0 for 10 day”s data, 1 hour intervals0 for 1 year” s data
*The most recent data is saved to memory.
Light source / Detector Light source: Low pressure mercury lamp / Detector: Silicon photo cell
Tubing connections Sample entry Rp-1/2 socket
Overflow outlet (1) 13 A nominal diameter socket
Bypass outlet Rc-1/2 socket
Drain outlet 50 A nominal diameter socket
Overflow outlet (2) 20 A nominal diameter socket
Drain outlet Rc-1/2 socket
Construction For outdoor installation
Material of parts in contact with sample SUS, PVC, PP, CR, SiO2
Power source AC 100 V to AC 230 V ±10%, 50/60 Hz
Power consumption AC 100 V to AC 120 V: 45 VA maximum AC 200 V to AC 230 V: 60 VA maximum
Weight Operating section: Approx. 5.0 kg Analyzer section: Approx. 5.6 kg
External dimensions Operating section 240 (W) x 105 (D) x 320 (H)
Analyzer section 200 (W) x 180 (D) x 404 (H) (units: mm) (excludes protruding sections)
Color/Finish Munsell 5PB8/1
Installation conditions • Install on a flat stable surface away from sources of vibration and shocks.
• Ambient air must not contain dust, mist or corrosive gases.
• Use at atmospheric pressure.
• Out of direct sunlight.
• An area with good air circulation.
• An altitude of less than 2000 m.
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