Home
 
 
 
Organic Pollution Monitor UV Meter
Model OPM-410a
 

The Model OPM-410 is an automated organic pollution monitor and performs measurements based on UV absorptiometry. The instrument is the result of over 10 years continuous product development and this accumulated technology has resulted in advanced features such as an improved direct submersion type detector which eliminates the need for any extractive sampling equipment and a construction designed for low maintenance.

Features
 

  • Direct submersion detector eliminates problems associated with sample extraction and pumping.

  • Self-diagnostic functions continuously monitor analyser operation.

  • Compact and lightweight construction. Detector weight is only 25% of previous models. This simplifies maintenance and allows the use of corrosion resistant reinforced plastic.

  • Accurate calibration using stability check function and automatic temperature compensation.

  • Simplified span check using built-in optical filter.

  • Wide measurement range with auto-range switching.

  • Output can be converted to COD from UV-VIS value.

  • Sample extraction style analysis can be performed by attaching a water tank receiver.
 
Standard Specifications
 
Product Name:   
  		 Organic Pollution
Monitor UV meter. 
Model: OPM-410A. 
Measurement:  Organic pollution in effluent. 
Measurement Method:

Dual wavelength absorptiometry (UV rays 254nm Visible rays 365~435nm Continuous measurement).
Measurement Cell: Immersed parallel cell (6mm, 10mm, 25mm).
Cell cleaning Method:

Automatic surface cleaning of the cell window using a wiper system. 
Measurement Range:  Absorbance 0~0.5/0~1.0/0~2.0/0~2.5) (auto or manual switching).
Ambient Temperature: -5~40°C. 
Sample Temperature: 0~45°C (no freezing).
Calibration Standards
Zero Solution: 
  		 Zero calibration liquid such as distilled water. 
Span Solution: Potassium hydrogen phthalate. 
Output Signals: 

Isolated from ground
UV, UV-VIS, VIS or converted COD value
DC 4~20mA (load 600W or less)
DC 0~1v (load greater than 600W) (available as an option). 
Other Signals
Output Signals: 

Maintenance signal
Power supply cut (short circuit) signal
Low sample water signal
Light source lamp failure signal
In cleaning mode signal
Max measurement value alarm signal
Range switching signal
Analyser fault alarm
(lamp decay, dirty cell window, water leakage, detector decay)
Contact rating for all above: DC 30V 3A, volt-free.
Input Signals:

Remote washer start signal 
Pulse contact point input to initialize
(Volt free, make time 0.1~1 sec).
Contact Rating:   DC 30V 0.3A.
Power Supply: AC 100V ±10% 50/60Hz.
Power Consumption: Approx. 70VA.
Measurement Cell:  Quartz glass. 
Drive:  SUS 316, Urethane rubber. 
Optional Body Material : AD12 (corrosion resistant aluminum). 
 
Construction
 
Available options:

  

Outdoor installation (JIS Class 3 Ingress Protection) 192(W) x 120(D) x 491(H) mm. 
Self-supporting mounting frame (option): 380(W) x 500(D) x 1500(H) mm
Detector (Submersion type):435(H) x 170 (Æ) mm.
Weight: Detector Approx. 6.8kg (not including cable weight).
Optional Transmitter Stand: Approx. 7kg (support stand (FRP) 9kg). 
  
Installation
 
Detector:  Exclusive fitting (winch mechanism). 
Transmitter: Self supporting stand (standard) or pole mounting. 
Paint Finish:  Munsell 5PB 8/1. 
Wiring Connection: Waterproof plug socket for 15Æ cable x4. 
Connecting Cable:  For between detector and transmitter x1
[15Æ, 10m long (standard), covered with flexible PVC].
Installation:  Install away from vibration, shocks and corrosive vapors.
Air Connection:  Air purge facilities are available for the body of the transmitter.
RC ¼, connection.
Air pressure: 0.02 Mpa (0.2 kgf/cm²).
  
Performance
 
Repeatability:  within ±2% FS. 
Baseline Drift: within ±2% FS. 
Zero Drift:  within ±2% FS/week.
Span Drift:  within ±2% FS/week. 
Response Speed:  90% response 30 seconds or less.
 
Options
 
(1)Components for modifications to 10mm cell.
(2)Components for modifications to 10mm cell.
(3)Components for sample extraction style application.
 
Related Equipment
 
Load calculation: Use Model CALD-131 for load calculation.
 
Principle Of Operation
 

The instrument uses a low pressure mercury lamp powered by a high stability circuit. Light from this source passes through the cell and then through a UV-pass filter (l = 254nm) and VIS-pass filter (l = 365~435 nm).
The analyser calculates the difference between AUV and AVIS and generates an output signal via a V/I converter. By using this system, obscuration due to the presence of mud in the sample can be compensated for and the instrument can effectively determine the concentration of organic pollutants in the sample.
  
Notes
 

  1. Unit can operate on both 50 or 60 Hz power.

  2. Unit can operate on non-standard power supplies by using a step down transformer available separately (such as Model ZP type).

  3. Three types of transmission outputs are available. These are UV, UV-VIS and VIS or converted COD value (VIS and converted COD value can be changed from the key-pad).

  4. AUTO is the automatic range switch of absorptiometer 0.5/1.0/2.0/2.5 and is available as standard equipment. Use by fixed range when combine with total load.

  5. Maximum length for transmitter-sensor cable is 30m.

  6. If the FRP support stand is not required, indicate “non-support stand” under installation style.

  7. For sample extraction/collection style installations, it is unnecessary to arrange the winch equipment and also the UV meter sampling water tank, Model OPM-410W.

  8. For easier installation method, make the best use of OPM-410 type’s advantages, we suggest the hanging style configuration with two of 3.5mm chains (if this specification is selected, the detector will be provided with two eye bolts).

  9. In case of no wall around the guide pipe of the winch equipment, the detector may rotate. In these situations, select ‘dual guide pipes style’. The same is also applicable to fast moving stream applications.



 
Introduction | Products | Quality | News | Contact | Enquiry Form