Van Walt CT12 Operating Instructions Manual Download Page 2

Operating Instructions

Van Walt Ltd | Prestwick Lane | Grayswood | Haslemere | Surrey | GU27 2DU | Tel. 01428 661 660 | Fax. 01428 656 808 | www.vanwalt.com

Compact Turbimeter

1

VAN WALT

Monitoring your needs

 

INTRODUCTION

The Compact Turbimeter is the latest addition to the Palintest Compact Meter range 

which includes photometers for chlorine, ozone, chlorine dioxide and ammonia.

The Compact Turbimeter operates according to the ISO 7027 method for 

measurement of turbidity, utilising two NIR light sources at 860nm as part of the 

QuadoptiX™ optical system. 

The Compact Turbimeter is provided in a hard case with accessories and standards 

to support effective use of the instrument.

For technical support or to report issues with this product please contact Van Walt.

KIT CONTENTS

Compact Turbimeter Instrument (CT12 Model)

4 x Sample Cuvettes

4 x SDVB Calibration Standards

Silicone Oil (10 ml)

2 x Packs of Lint-Free Cloths

Sample/Dilution Tube

Cleaning Brush

2 x Heat Pads (WP48)

Instructions

 

QUADOPTIX™ TECHNOLOGY

The Palintest Compact Turbimeter utilizes QuadoptiX™ technology for turbidity 

measurement a sophisticated optical approach designed to ensure turbidity 

measurements are as accurate and repeatable as possible in even the most 

challenging circumstances.

Turbidity measurements are carried out by analysis of light scattered at 90° to the 

incident light (nephelometric measurement) at levels below 40 NTU. Above 40 NTU 

the recommendation is to measure also at 180° to ‘compensate’ the 90° readings.

QuadoptiX technology uses two independent sources and two independent 

detectors to provide effectively two entirely autonomous measurement systems in 

the same instrument, allowing dual validation of all results for greater accuracy.

Summary of Contents for CT12

Page 1: ...x 01428 656 808 www vanwalt com Compact Turbimeter 1 VAN WALT Monitoring your needs CONTENTS INTRODUCTION KIT CONTENTS QUADOPTIX TECHNOLOGY START UP BATTERY LIFE SYSTEM MENU READING MENU CALIBRATION M...

Page 2: ...TENTS Compact Turbimeter Instrument CT12 Model 4 x Sample Cuvettes 4 x SDVB Calibration Standards Silicone Oil 10 ml 2 x Packs of Lint Free Cloths Sample Dilution Tube Cleaning Brush 2 x Heat Pads WP4...

Page 3: ...ON After initialization the Mode screen will appear and display three options 1 Reading Select the mode to measure turbidity or suspended solids 2 Calibration Choose either SDVB Total Suspended Solid...

Page 4: ...r data including the last mode used for reading Replacing the AA batteries will not lead to settings or calibration data being lost If battery power is insufficient for effective operation the Compact...

Page 5: ...by pressing Done briefly Select OK to accept or Edit to change the entry Multiple Operator IDs can be stored and recalled from memory as required Sample ID Optionally set the Sample ID using the same...

Page 6: ...event stray light from adversely affecting readings Microscopic scratches will refract light and can lead to higher than expected values To prevent scratches having an impact apply a thin film of sili...

Page 7: ...ng mode select Normal and press OK Insert the sample with the orientation mark facing forward and press Read A beep will sound at the start and end of measurement Result is displayed in and stored in...

Page 8: ...wn arrows The calibration data will be recalled automatically Insert the sample with the orientation mark facing forward and press Read A beep will occur at the start and end of each measurement cycle...

Page 9: ...can be used 2 Factor Using data manipulated externally a slope and intercept for the straight line relationship can be entered directly Calibrating the Compact Turbimeter SDVB Select Calibration and p...

Page 10: ...ady been created use the Up Down arrows to highlight and press OK to select If a new Sample ID is required move the highlight to a blank area and press New Create the new Sample ID using the Up Down b...

Page 11: ...mine any offset that may have occurred due to fouling Subjecting the standards to prolonged exposure to low temperatures will reduce the NTU value The use of a WP48 Heat Pad is recommenced in these ci...

Page 12: ...materials Readings are unstable variable Turbidity is a measurement of scattered light with the source of scattering being microscopic and larger solids present in the sample Solids can be mobile or...

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