HF scientific 19998 User Manual

OWNERS MANUAL

HF – Triple Validation Turbidimeter

0-10, 0-100 NTU

3170 Metro Parkway
Ft. Myers, FL 33916
239-337-2116

Catalog No. 22634 (5/02)
Rev. 2.6 (.pdf)

HF scientific, inc.

DECLARATION OF CONFORMITY

Application of Council Directive

Standard to which Conformity is Declared:

Product Safety - Tested and passed CE EN61010-1:1990 + A1:1992 (73/32 EEC)

Immunity and Emissions – Tested and passed EN61326:1998, Class A

Manufacturer’s Name: HF scientific, inc.

Manufacturer’s Address: 3170 Metro Parkway, Fort Myers, Florida 33916-7597

Importer’s Name:

Importer’s Address:

Type of Equipment: Process Turbidimeter

Model No: TVT

Year of Manufacture: 2001, 2002

I, the undersigned, hereby declare that the equipment specified above conforms to the above
Directive and Standard

Place: Fort Myers, Florida USA
(Signature)

Robert J. Maley, President

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Rev. 2.6 (.pdf)

Table of Contents

Specifications.................................................................................................................................. 1

1.0 Overview............................................................................................................................. 2

1.1 Unpacking and Inspection of the Instrument and Accessories ....................................... 2

1.2 The Display..................................................................................................................... 3

1.3 The Touch Pad ................................................................................................................ 3

2.0 Safety .................................................................................................................................. 4

3.0 Installation and Commissioning ......................................................................................... 5

3.1 Mounting & Site Selection.............................................................................................. 5

3.2 Plumbing......................................................................................................................... 6

3.3 Electrical Connections .................................................................................................... 6

4.0 Normal Operation ............................................................................................................... 8

4.1 Routine Measurement ..................................................................................................... 9

4.2 Security Access Feature.................................................................................................. 9

5.0 Instrument Calibration ........................................................................................................ 9

5.1 Calibration Standards.................................................................................................... 10

5.2 Calibration Procedures.................................................................................................. 10

6.0 Calibration by Comparison to Laboratory Measurements (Instrument Offset)................ 14

7.0 Instrument Configuration (Range).................................................................................... 15

7.1 0-100 NTU Range Selection......................................................................................... 15

8.0 Instrument Configuration (SETUP Mode)........................................................................ 16

8.1 Displayed Resolution.................................................................................................... 16

8.2 Setting the Year............................................................................................................. 16

8.3 Setting the Day and Month ........................................................................................... 16

8.4 Setting the Time............................................................................................................ 17

8.5 Programming the Alarms.............................................................................................. 18

8.5.1 Alarm 1 ................................................................................................................. 19

8.5.2 Alarm 2 ................................................................................................................. 20

8.6 Setting the Analog Output (O/P)................................................................................... 20

8.7 Configuring the RS485 I/O Port ................................................................................... 21

8.8 Setting the Security Access Option............................................................................... 22

9.0 Troubleshooting/System Alarm Relay.............................................................................. 23

9.1 System Warning Message(s)......................................................................................... 23

9.2 System Error Message .................................................................................................. 24

9.3 Technical and Customer Assistance ............................................................................. 24

10.0 Routine Maintenance ........................................................................................................ 25

10.1 Cleaning the Optical Chamber (Sample Tube)............................................................. 25

10.2 Replacing the Desiccant Cartridge................................................................................ 25

11.0 Accessories and Replacement Parts List........................................................................... 26

12.0 Warranty ........................................................................................................................... 27

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Specifications

Measurement Range 0.01 –100.0 NTU

Accuracy

Resolution 0.0001 NTU on low readings

Response Time Less than 8 seconds

Display Liquid Crystal Display

Two User Programmable
Alarms

Analog Output Signals 4 - 20 mA

Water Pressure 0.1 - 8 bar (1-116 psi.)

Flow Rate 0.5 Liter/min. regulated (.26 Gal/min)

Operating Temperature Range 1°C – 50°C (34°F – 122°F)

Sample Temperature Range 1°C – 50°C (34°F – 122°F)

Supply Voltage to TVT 15 – 18 VDC @ 400 mA

±2% of reading plus 0.01 NTU (0-10 NTU)

±5% of reading plus 0.1 NTU (10-100 NTU)

120-240VAC 2A Form C Relay with suppressors

Power Consumption 6 VA

Insulation Rating Pollution Degree 2,

Overvoltage Category II

Regulatory Compliance (0-10
NTU)

Approximate Dimensions 175mm W x 310mm H x 225mm D (6.875” W x 12.25” H x

Shipping Weight 2.5 kg (5.5 lbs.)

Warranty 1 Year from date of shipment

White Light Version compliant to U.S. EPA 180.1

Infrared Version compliant to ISO 7027

8.875” D)

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Rev. 2.6 (.pdf)

1.0 Overview

The TVT process turbidimeter allows you to measure the turbidity of your process water
on-line. The White Light TVT has been designed to meet the design criteria specified by
the US EPA on turbidity measurement. The Infra-Red TVT was designed to meet the
design criteria specified in ISO 7027 and DIN 27027 for the measurement of the turbidity
of a sample.

1.1 Unpacking and Inspection of the Instrument and Accessories

The table below indicates the items that you should find in your turbidimeter shipment.

Item Part # Quantity

TVT Turbidimeter 19995 (White Light Version), or

19998 (Infrared Version)

Instruction Manual 22634 1

Mounting Kit 22695 1

Power Supply 22578 1

Desiccant Cartridge 19610 1

Remove the instrument from the packing carton. Carefully inspect all items to ensure
that no visible damage has occurred during shipment. If the items you received do not
match your order, please immediately contact your local distributor or the HF scientific,
inc. Customer Service department.

1

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Rev. 2.6 (.pdf)

1.2 The Display

Figure 1 illustrates all the items that can appear on the display. The upper row of the
display (1) is used for reporting the turbidity levels and to provide user guidance in the
customer setting routine. The lower row of the display (2) is used to communicate error
messages and user guidance. The display has several status indicators (3) that distinguish
the operation of the instrument. In addition there are several indicators that display the
different scales (4) that the instrument will report. Other indicators (5) provide guidance
when the setup and calibration routines are being used.

.

Figure 1- Display used in the instrument.

All items used on the display are shown in this figure

1.3 The Touch Pad

Figure 2: The Instrument touch pad.

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Figure 2 illustrates the touch pad. The touch pad has four buttons: MODE,

↵↵↵↵, t,

and

u. The MODE button is used to cycle between the three operational modes of the

instrument: CAL, SETUP, and AUTO (Measurement) mode. The
option (or mode) that is highlighted or chosen. The tand u buttons are used to scroll

through lists and to increase or decrease settings.

2.0 Safety

This manual contains basic instructions that you must follow during the commissioning,
operation, care and maintenance of the instrument. The safety protection provided by
this equipment may be impaired if it is commissioned and/or used in a manner not
described in this manual. Consequently, all responsible personnel must read this manual
prior to working with this instrument.

All relay contacts are held at the last valid condition and will not change state while the
instrument is in the calibration and/or in the configuration mode. In addition, in these
modes, the instrument has a time-out feature that automatically returns the system
operation to the normal operation mode from any other mode after a five (5) minute
period of inactivity.

In certain instances NOTES, or helpful hints, have been highlighted to give further
clarification to the instructions. Refer to the Table of Contents to easily find specific
topics and to learn about unfamiliar terms.

↵↵↵↵

button enters the

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