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PendoTECH UV-VIS-NIR Photometer for UV

Absorbance and Turbidity Measurements User’s Manual

Revision 3

Page

Document Title: UV-VIS-NIR Photometer P-Version User’s Manual

PENDOTECH® UV-VIS-NIR

PHOTOMETER FOR UV

ABSORBANCE AND TURBIDITY

MEASUREMENTS

USER’S MANUAL

PendoTECH

www.pendotech.com

Summary of Contents for UV-VIS-NIR

Page 1: ...nce and Turbidity Measurements User s Manual Revision 3 Page 1 of 24 Document Title UV VIS NIR Photometer P Version User s Manual PENDOTECH UV VIS NIR PHOTOMETER FOR UV ABSORBANCE AND TURBIDITY MEASUREMENTS USER S MANUAL PendoTECH www pendotech com ...

Page 2: ...e for the process in which the unit is used This device has left our facility after careful testing of all the photometer s functions and safety features The functioning and operational safety of the product can only be ensured if the user observes the usual safety precautions as well as the specific safety guidelines stated in these operating guidelines Before connecting the device to the electri...

Page 3: ...he product Ensure that both ends of the fiber optic cables photometer and flow cell connections are properly secured firmly hand tight before powering on the photometer The photometer should always be powered off when handling the fiber optic cables If you must handle the fibers when the unit is powered on protective eyewear must be worn In the event of product failure do not attempt to open the u...

Page 4: ...information contained within this document is confidential and proprietary to PendoTECH and may be covered under existing US patents or patents pending This information shall not be reproduced or further disclosed in whole or in part to anyone other than employees of the company purchasing the product without prior written consent from PendoTECH ...

Page 5: ...er s Manual Revision 3 Page 5 of 24 Contents Section 1 Introduction and Unpacking 6 Section 2 Hardware Installation 8 Section 4 Glossary and Definitions 16 Section 5 Instrument Controls 17 Section 6 Absorbance Operations 19 Section 7 System Specifications 20 Section 8 Appendix 21 ...

Page 6: ...meter can be used to measure turbidity as an indication of filter performance or to measure unclarified material The photometer also comes in a dual wavelength version which allows users to make two measurements of different wavelengths from 255 to 1000nm simultaneously in the same sample The combination of the UV VIS NIR photometer and the PendoTECH Single Use Flow Cells allow the measurements to...

Page 7: ... Revision 3 Page 7 of 24 3 Optical Couplers Flow Cell Holders Varies per flow cell used and configuration type Optional Flow Cell Stand 4 Example Flow Cells Single Use Flow Cell 1cm path length Adjustable Path Length Flow Cell coupler removed Adjustable Path Length Flow Cell coupler inserted ...

Page 8: ...e heat within the enclosure 2 2 Physical For permanent installations bolt the photometer back panel or enclosure as appropriate in place using mounting screws The location should be secure rigid and strong enough to support the weight of the installed system For laboratory use ensure that there is sufficient space on the bench or tabletop to accommodate the hardware supplied For all systems run th...

Page 9: ...o known as 2 propanol or methanol using a lint free cotton swab or non abrasive task wipe Spectroscopic grade acetone can also be used but separation of cotton from the swab might occur as the binding agent dissolves 3 Properly mount the flow cell stand holder if applicable to system The flow cell stand can be set directly flat on a lab bench or should be properly wall panel mounted Proper mountin...

Page 10: ...e then a tare calibration with air in the flow cell may be used instead 7 Wait at least 10 seconds for the taring and calibration routine to complete The status light will turn back blue a Note In a panel mount installation the status LED is not visible It is recommended to integrate a 10s indication display on the user interface that the unit is not ready for use do not change fluid sate in the f...

Page 11: ...User s Manual Revision 3 Page 11 of 24 2 4 Electrical Panel mount version Lab version NOTE DO NOT power up the unit during installation Ensure that all electrical connections are made with un energized wires It is recommended that an ON OFF switch be employed for panel mounting ...

Page 12: ...pins 1 and 2 are used For dual channel units pins 1 and 2 correspond to the photometer s first wavelength lower and pins 3 and 4 correspond to the second wavelength higher For panel mounted systems a terminal strip is provided for electrical connectivity For lab version systems a cable that connects to the Signal I O terminal on the back of the photometer may be purchased The cable that has flying...

Page 13: ...determination of analyte concentration When making quantitative measurements it is critical that the LED based photometer is accurately correlated to standard laboratory methods and solutions The LED provides a specific wavelength or wavelengths for dual channel models range for measurement selected to coincide with analyte specific molecular absorbance The LED is located internal to the photomete...

Page 14: ...on 3 Page 14 of 24 o Watch Out If the light source FWHM width is wider than the molecule s absorption peak that will produce false low absorption values Figure 1 LED wavelength spectrum example for 260nm UV VIS NIR photometer Figure 2 LED wavelength spectrum example for 280nm UV VIS NIR photometer ...

Page 15: ...wavelength range The reference signal is measured directly from the light source by the reference detector and light that passes through the sample is measured by the measure detector The reference channel is used in order to cancel variations from light source intensity fluctuations spectral change due to window fouling or suspended particles in the process stream Figure 4 Optical diagram of phot...

Page 16: ...the light emitting diode LED used to select the measurement wavelength Measure Wavelength The wavelength or range of wavelengths of light that are absorbed by the analyte s of interest Process Background The liquid or gas used to transport or sustain the analyte of interest in the process This includes all the chemical constituents found in the process except the analyte of interest Reference LED ...

Page 17: ...ontrols 5 1 Zero The zero button contacts will set one or both channels for dual wavelength model to zero absorbance 0 00AU or 4 00mA NOTE For best results the unit should be tared calibrated with the process background fluid in the flow cell if possible If not possible then a tare calibration with air in the flow cell may be used instead ...

Page 18: ...alarm contact pins will close during an alarm The alarm will activate if Alarm Activator Cause Solution The measurement detector is saturated at 100 Photometer outputting negative absorbance values due to bad tare Re tare flow cell with background solution or air The reference detector is saturated at 100 Extreme amount of ambient light entering flow cell measure detector Use flow cell holder to b...

Page 19: ... screw firmly to securely hold the flow ce 2 Ensure that both the power and the analog output connections are wired correctly See Section 2 4 for instructions 3 Provide power to the unit 4 Zero tare the unit I For best results the unit should be tared calibrated with the process background fluid in the flow cell if possible If not possible then a tare calibration with air in the flow cell may be u...

Page 20: ...ernal Source Reference 7 2 Photometer Specifications Configuration Internal Source Reference Optical Connectivity SMA 905 Mechanical 4 10 2cm W x 4 10 2cm L x 2 5 6 4cm H Weight 1 5lbs Power Requirement 24VDC nominal 2 7W max power Output 4 20mA Active sourcing spanned 0 3AU Analog Loop Resistance 500 ohms at 24VDC Operating Temperature 41to 122 F 5 to 50C Storage Temperature 4 to 122 F 20 to 50C ...

Page 21: ...PendoTECH UV VIS NIR Photometer for UV Absorbance and Turbidity Measurements User s Manual Revision 3 Page 21 of 24 Section 8 Appendix 8 1 Drawings Panel Mount Version with mounting flange ...

Page 22: ...owing EC Directive s when installed in accordance with the instructions contained in supplied product documentation 2014 30 EU EMC Directive TUV Test Reports TP72129730 100 TP72129730 000 2014 35 EU Low Voltage Directive TUV Test Report TP72129730 000 and the standards and or technical specifications for EN 61326 1 2013 comprised on the following specifications CISPR 11 EN 61000 3 2 EN 61000 3 3 I...

Page 23: ...PendoTECH UV VIS NIR Photometer for UV Absorbance and Turbidity Measurements User s Manual Revision 3 Page 23 of 24 8 3 Product Warranty ...

Page 24: ... for repair If out of warranty the user should call PendoTECH for over the phone assistance and our service staff will help determine if the unit should be returned for repair For factory service please contact PendoTECH at request pendotech com or call 1 609 799 2299 for a return authorization number Then pack the unit carefully preferably in the original shipping container insure and ship to Pen...

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