Hach-Lange SURFACE SCATTER 7 sc User Manual

Catalog Number DOC026.52.00769

Surface Scatter® 7 sc Turbidimeter

USER MANUAL

Edition 2 November 2006

Catalog Number DOC026.52.00769

Surface Scatter® 7 sc Turbidimeter

USER MANUAL

Edition 2 November 2006

Visit us at www.hach.com

Table of Contents

Section 1 Specifications .........................................................................................................5

Section 2 General information ...............................................................................................9

2.1 Safety information ....................................................................................................................... 9

2.1.1 Use of hazard information .................................................................................................. 9

2.1.2 Precautionary labels .......................................................................................................... 9

2.2 General product information ..................................................................................................... 10

2.2.1 Instrument description ...................................................................................................... 10

2.2.2 Surface Scatter 7 sc High Sample Temperature ............................................................. 13

Section 3 Installation ............................................................................................................15

3.1 Basic installation overview ........................................................................................................ 15

3.2 Unpacking the instrument ......................................................................................................... 15

3.3 Mechanical installation .............................................................................................................. 17

3.3.1 Environmental requirements ............................................................................................ 17

3.3.2 Selecting the installation location ..................................................................................... 17

3.3.3 Mounting the SS7 sc or SS7 sc-HST ............................................................................... 17

3.3.4 Installing the optional heat exchanger ............................................................................. 19

3.3.5 Installing the 3-way ball valves ........................................................................................ 20

3.4 Installing a sample line .............................................................................................................. 20

3.5 Connecting hydraulics ...............................................................................................................21

3.6 Connecting the air purge fitting ................................................................................................. 24

3.7 Electrical installation .................................................................................................................24

3.7.1 Wiring safety information .................................................................................................24

3.7.2 Connecting/wiring the SS7 sc or SS7 sc-HST to the sc100 controller ............................. 24

Section 4 System startup .....................................................................................................27

4.1 General operation ..................................................................................................................... 27

4.2 Starting sample flow .................................................................................................................. 27

Section 5 Operation ..............................................................................................................29

5.1 Sensor setup ............................................................................................................................. 29

5.1.1 Configuring the bubble reject ........................................................................................... 29

5.1.2 Configuring the signal average ........................................................................................ 29

5.2 Sensor data logging .................................................................................................................. 30

5.3 Sensor diagnostics menu .......................................................................................................... 30

5.4 Sensor setup menu ................................................................................................................... 30

5.5 Sensor calibration and verification ............................................................................................ 31

5.5.1 Standardization and calibration ........................................................................................ 31

5.5.2 Calibration ........................................................................................................................ 31

5.5.3 Setting the verification baseline ....................................................................................... 34

5.5.4 Instrument verification ...................................................................................................... 35

5.6 Calibration and verification history ............................................................................................ 36

5.7 Operating the SS7 sc-HST ....................................................................................................... 38

Section 6 Maintenance ..........................................................................................................39

6.1 Scheduled maintenance ........................................................................................................... 39

6.2 Removing a sensor from the system ........................................................................................ 39

6.3 Installing a sensor on the system .............................................................................................. 39

6.3.1 Cleaning ........................................................................................................................... 40

6.4 Unscheduled maintenance ....................................................................................................... 40

6.4.1 Lamp replacement ........................................................................................................... 40

6.4.2 Light source assembly maintenance ................................................................................ 43

6.4.3 Detector assembly replacement ...................................................................................... 44

Table of Contents

Section 7 Troubleshooting ...................................................................................................47

7.1 Error Codes ...............................................................................................................................47

7.2 Warnings ...................................................................................................................................47

7.3 Event codes ...............................................................................................................................49

7.4 Data log .....................................................................................................................................50

Section 8 Replacement parts and accessories ..................................................................51

8.1 Replacement parts ....................................................................................................................51

8.2 Accessories ...............................................................................................................................51

Section 9 Contact ..................................................................................................................53

Section 10 Limited warranty .................................................................................................54

Section 11 Certification .........................................................................................................55

Section 1 Specifications

Specifications are subject to change without notice

Range 0.01–9999.9 nephelometric turbidity units (NTU)

Accuracy

Resolution (displayed) 0.01 NTU up to 999.99 NTU; 0.1 NTU from 1000.0 to 9999.9 NTU

Repeatability Better than ± 1.0% of reading or ± 0.04 NTU, whichever is greater for each range.

Response time Initial response in 45 seconds

Sample flow required 1.0 to 2.0 L/min (0.3 to 0.5 gal/min) (15 to 30 gal/hr)

± 5% of reading or ± 0.1 NTU (whichever is greater) from 0.01 to 2000 NTU; ± 10% of reading from 2000 to 9999 NTU

Sensor storage temperature

Operating temperature

Sample temperature range

Operating humidity 5 to 95% non-condensing

Power requirements 12 VDC ±5%, 20 watts maximum (provides by sc100)

Sample inlet fitting ¾-in. NPT female

Overflow drain fitting 1-in. NPT female

Body drain fitting ¾-in. NPT female

AIr purge fitting ¼-in. quick-connect compression fitting; 0–50SCFH airflow of clean instrument air

Signal average (filter) time No averaging, 6, 30, 60 and 90 seconds, user selectable. Default is 30 seconds.

Sensor dimensions 64.2 x 67.5 x 19.0 cm (25.3 x 26.6 x 7.5 in.)

Sensor cable length 2 m (6.6 ft); Optional 7.62 m (25 ft) extension cable. Maximum cable length is 9.62 m (31.6 ft).

Sensor cable rating

Mounting options Wall

–20 to 80 °C (–4 to 140 °F); 95% relative humidity, non-condensing.

sc100: 0 to 50 °C (32 to 122 °F) for one SS7 sc on an sc100; 0 to 40 °C (32 to 104 ° F) for one SS7 sc and another smart sensor that consumes less than 5 watts on a single sc100 (provided by sc100). See Figure 1 on page 6.

sc1000: –20 to 55 °C (–4 to 131 °F); 95% relative humidity, non-condensing 0 to 50 °C (32–122 °F);

HST model—0 to 70 °C, intermittent 70 to 80 °C. (An approved heat exchanger is available to reduce sample temperature.)

Cable: 105 °C, 300 V, PVC jacket Wires: 22 AWG, PVC jacket

Shipping weight

Calibration method Formazin – user-prepared primary or wet calibration of the instrument

Verification (dry) method

Recommended cleaning intervals

Languages

Installation environment Indoor

Primary compliance method

SS7 sc—15.8 kg (34.8 lb); SS7 sc-HST—18 kg (39.6 lb)

Standardization plates with approximate values of 100 or 1000 NTU. Unique value is assigned when dry verification is done immediately after calibration and is used with pass/fail criteria for subsequent verifications.

Mandatory before calibration Optional before verification Mandatory upon verification failure

English (default), German, French, Spanish, Italian, Swedish, Polish, Korean, Chinese, Japanese

USEPA 180.1; Hach Method 8195; ASTM D 6698; Standard Methods 2130B

Specifications

Figure 1 Maximum ambient temperature vs. probe load

Table 1 sc100 controller capacity

Controller operating temperature (°C) Power available (watts) Controller capacity

40 25 1 SS7 sc plus 5 watts for other devices 50 16 1 SS7 sc plus 4 watts for other devices 60 7 Out of power range for SS7 sc

Specifications

Temp

sc 1000 Ambient T (°C)

22 24

26 28 30 32 34 36 38 40

46 48 50 52

Probe Load (watts)

Figure 2 Maximum ambient temperature vs. probe load

Table 2 sc1000 controller capacity

Controller operating temperature (°C) Power available (watts) Controller capacity

40 55 2 SS7 sc plus 15 watts for other devices 50 35 2 SS7 sc plus 11 watts for other devices 55 25 1 SS7 sc plus 13 watts for other devices

Table 3 sc1000 component power consumption

Component Power consumption (watts)

Display module 10 Current output card 2.5 maximum load Current input card 1.5 Relais card 1 Fieldbus module (Profibus) 2.5 Fieldbus module (Modbus) 0.5

Visit us at www.hach.com

Section 2 General information

2.1 Safety information

Please read this entire manual before unpacking, setting up or operating this equipment. Pay attention to all danger and caution statements. Failure to do so could result in serious injury to the operator or damage to the equipment.

To ensure that the protection provided by this equipment is not impaired, do not use or install this equipment in any manner other than that specified in this manual.

2.1.1 Use of hazard information

DANGER Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION Indicates a potentially hazardous situation that may result in minor or moderate injury.

Important Note: Information that requires special emphasis.

2.1.2 Precautionary labels

This symbol, if noted on the instrument, references the instruction manual for operation and/or safety information.

Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after 12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European electrical equipment users must now return old or end-of life equipment to the Producer for disposal at no charge to the user.

Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life equipment, producer-supplied electrical accessories and all auxiliary items for proper disposal.

This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock and/or electrocution exists.

This symbol, if noted on the product, indicates the need for protective eye wear.

Note: Information that supplements points in the main text.

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed. A symbol, if noted on the instrument, will be included with a danger or caution statement in the manual.

This symbol, when noted on the product, identifies the location of the connection for Protective Earth (ground).

This symbol, when noted on the product, identifies the location of a fuse or current limiting device. This symbol, when noted on the product, identifies a risk of chemical harm and indicates that only individuals

qualified and trained to work with chemicals should handle chemicals or perform maintenance on chemical delivery systems associated with the equipment.

This symbol, when noted on the product, indicated the presence of devices sensitive to Electro-static Discharge (ESD) and indicated that care must be taken to prevent damage with the equipment.

General information

2.2 General product information

2.2.1 Instrument description

The Surface Scatter® 7 sc (SS7 sc) Turbidimeter is a sensitive, continuous-monitoring instrument designed for measuring turbidity in fluids. The instrument design is based on the nephelometric principle, where light scattered by particles suspended in the fluid is measured to determine the relative amount of particulate matter in the fluid. It meets all U.S. Environmental Protection Agency (USEPA) design criteria, features an automatic-ranging digital display and is capable of measuring turbidities from 0–9999 NTU. Calibration is based on formazin, the primary turbidity reference standard adopted by the APHA Standard Methods for the Examination of Water and Wastewater and the USEPA. The instrument consists of a control unit and a sample unit (Figure 3).

DANGER The SS7 sc and SS7 sc-HST Turbidimeters are not designed for use with samples that are flammable or explosive in nature. If any sample solution other than water is used in this product, test the sample/product compatibility to assure user safety and proper product performance.

DANGER The SS7 sc/sc controller platform product configuration is not intended for installation in hazardous locations. See the sc controller platform installation control drawing 58600-78 for approved hazardous location sensors.

Figure 3 SS7 sc Turbidimeter

1 Sample unit 2 Control unit

2.2.1.1 Controller

General information

The SS7 sc and SS7 sc-HST operate in conjunction with an sc100 controller. The controller enclosure houses the keypad, display, microprocessor board and power supply components.

Operating controls and indicators are on the controller. The controller is used to program the instrument for turbidity level alarm set points and to perform diagnostic self-tests and programming operations.

Sample turbidity is displayed continually by the digital display during normal operation. Because of the automatic decimal point positioning, no range selection is needed. Indicators of turbidity level alarm conditions, certain critical system malfunctions or other possible malfunctions are also on the controller.

Programmable alarm circuits provide three relay closures, both normally open and normally closed, for selectable turbidity alarm level set points. Set points can be programmed by the operator anywhere within the overall range. The alarm circuits can be programmed for Alarm, Feeder Control, Event Control, PWM Control, Frequency Control and Warning. Refer to the sc100 manual for setup and use of these different settings. An alarm relay can be programmed in the sc100 to control the optional Auto Flush Kit.

2.2.1.2 Sample unit

The sc100 controller is designed to meet NEMA 4X water-tight requirements. It is constructed of corrosion-proof materials. It is suitable for indoor installation. Mounting hardware is included with the sc100 to provide the capability to wall mount, pipe mount and panel mount the controller without affecting the environmental integrity of the case. Electrical access holes are sized for ½-in. conduit.

Sample flows through the sample unit (Figure 4) where sample turbidity is measured. The sample unit enclosure contains all the electronics for measuring the turbidity. A NEMA 12, corrosion-proof case protects the optical components and hydraulics from industrial environments and supplies the measurement signal to the control unit. The case is designed for wall mounting with external mounting blocks.

Hydraulic connections to the sample unit are at the bottom of the enclosure. An air purge fitting is installed in the enclosure bottom. Air purge is suggested to control condensation inside the enclosure.

General information

Figure 4 SS7 sc components

1 Detector assembly (Cat. No. 71221-00) 5 Bulkhead fitting, 1-in. NPT (Cat. No. 40355-00) 2 Light source assembly (Cat. No. 45004-00) 6 Bulkhead fittings, ¾-in. NPT (Cat. No. 40311-00) 3 To sc100 7 Turbidimeter body (Cat. No. 45002-00) 4 Cord grip (Cat. No. 61287-01)

General information

Figure 5 Optical diagram

1 Detector assembly 5 Light beam 9 Instrument drain 2 Scattered light 6 Over-flowing sample 10 Refracted light 3 Lens 7 Overflow drain 11 Turbidimeter body 4 Lamp 8 Sample in 12 Reflected light

2.2.2 Surface Scatter 7 sc High Sample Temperature

The Surface Scatter 7 sc High Sample Temperature Turbidimeter (SS7 sc-HST) has been designed for high sample temperature. The basic design and principle of operation are the same as the standard SS7 sc model. Differences between the standard and HST models will be noted in this manual where appropriate.

General information

Figure 6 SS7 sc-HST components

1 Flow multiplier 8 Cord grip (Cat. No. 61287-01) 2 ¾-in. hose 9 Bulkhead fitting, 1-in. NPT (Cat. No. 40355-00) 3 Threaded disk (Cat. No. 40299-00) with ¼-in. screw

(Cat. No. 7858-11)

4 Detector assembly (Cat. No. 71221-00) 11 1-in. NPT gravity drain 5 Vent cover (Cat. No. 40294-00) 12 Bulkhead fittings, ¾-in. NPT (Cat. No. 40311-00) 6 Light source assembly (Cat. No. 45004-00) 13 Turbidimeter body (Cat. No. 45002-00) 7 To sc100

10 Drain trap

Section 3 Installation

3.1 Basic installation overview

DANGER Only qualified personnel should conduct the tasks described in this section of the manual. The SS7 sc/sc controller product

configuration is not intended for installation in hazardous locations.

The tasks described in this section requires individuals to be technically knowledgeable of the associated dangers. Burns, shock, eye damage, fire and chemical exposure may occur if this work is not done by qualified personnel. Always review appropriate Material Safety Data Sheets (MSDS) before working with chemicals.

1. Unpack the SS7 sc or SS7 sc-HST Turbidimeter (section 3.2).

2. Review the environmental requirements and select the

mounting location (section 3.3.2 on page 17).

3. Mount the sample unit (section 3.3.3 on page 17).

4. Install the optional heat exchanger, if required (section 3.3.4 on

page 19).

3.2 Unpacking the instrument

5. Install the 3-way ball valve, if required (section 3.3.5 on

page 20).

6. Connect the sample in, body drain and overflow drain (section 3.5 on page 21).

7. Connect the air purge valve (section 3.6 on page 24).

8. Connect the sample unit to the controller to supply power to the

system (section 3.7.2 on page 24).

1. Remove the instrument from the shipping carton.

2. Verify that no visible damage has occurred during shipment. Be

sure the following items are included in the carton:

• Sample unit

• Instruction manual

• Installation kit items (Figure 7)

Contact the manufacturer immediately to report missing or damaged items.

Installation

Figure 7 Installation kit items

1 Formazin stock solution, 4000 NTU, 500 mL 6 Washer, ¼ ID x 1.00 OD (4x) 2 Brush, cylinder, size 2 7 Adapter, barb fitting, ¾” NPT to ¾” ID hose barb (2x) 3 Calibration cup, SS7 sc 8 Adapter, barb fitting, 1” NPT to 1” ID hose 4 Light source alignment plate 9 Nipple, ¾” NPT 5 Wall mounting kit 10 Drain valve

See Section 8 Replacement parts and accessories on page 51.

3.3 Mechanical installation

3.3.1 Environmental requirements

The SS7 sc and SS7 sc-HST enclosures are designed for general-duty, indoor installation. Ambient temperatures within specifications are allowed, but best performance will result if temperature does not change rapidly. Do not mount in direct sunlight. Shield from dripping water.

The controller enclosure is designed to protect the electronics from typical conditions in water treatment and industrial facilities.

3.3.2 Selecting the installation location

Turbidimeters should always be located as close to the sampling point as possible. The shorter the distance traveled by the sample to the turbidimeter, the faster the turbidimeter can respond and indicate changes in sample turbidity.

Dimensions and other installation information are shown in Figure 8

on page 18, Figure 9 on page 19 and Figure 10 on page 20. The

control and sample unit are designed for wall mounting. The turbidimeter sensor must be mounted within six feet of the controller unless an extension cable is used. Maximum cable length is 9.6 m (31.5 ft).

Installation

3.3.3 Mounting the SS7 sc or SS7 sc-HST

1. To ensure proper performance, the sample unit must be level

(Figure 9 on page 19). Use a small level across the top opening of the turbidimeter body to verify that the instrument does not slope left-to-right or front-to-back.

2. Use one rubber washer (supplied) at each wall mounting block between the block and the wall. Mounting blocks are secured to the four corners of the sample unit to facilitate wall mounting without affecting the integrity of the enclosure protection.

3. Attach the sample unit to the wall with four customer-supplied mounting bolts.

Installation

Figure 8 SS7 sc and SS7 sc-HST installation drawing

1 Door hinges (4x) 7 Ball valve 2 Flow multiplier (SS7 sc-HST only) 8 ¾-in. NPT nipple 3 Ventilator (2x) 9 1-in. NPTF bulkhead fitting 4 Cable assembly 10 ¾-in. NPTF bulkhead fitting 5 Enclosure door latch (4x) 11 Air purge fitting 6 Drain trap (SS7 sc-HST only)

+ 44 hidden pages