Hach-Lange 3400 sc User Manual

DOC023.52.03249.Jun05

3400 sc Digital Conductivity

Analysis Sensors

User Manual

DOC023.52.03249.Jun05

3400 sc Digital Conductivity

Analysis System

User Manual

Table of Contents

Section 1 Specifications......................................................................................................................................... 3

Section 2 General Information ............................................................................................................................... 7

2.1 Safety Information ............................................................................................................................................... 7

2.1.1 Use of Hazard Information......................................................................................................................... 7

2.1.2 Precautionary Labels................................................................................................................................. 7

2.2 General Sensor Information ................................................................................................................................ 8

2.3 The Digital Gateway.......................................................................................................................................... 10

2.4 Theory of Operation.......................................................................................................................................... 10

Section 3 Installation ............................................................................................................................................ 11

3.1 Connecting the Sensor to an sc Controller ....................................................................................................... 11

3.1.1 Attaching a sc Sensor with a Quick-connect Fitting ................................................................................ 11

3.2 Using the Digital Gateway................................................................................................................................. 12

3.2.1 Wiring the sc Sensor to the Digital Gateway ........................................................................................... 12

3.2.2 Mounting the Digital Gateway.................................................................................................................. 14

3.3 Installing the Sensor in the Sample Stream...................................................................................................... 15

Section 4 Operation .............................................................................................................................................. 17

4.1 Using an sc Controller....................................................................................................................................... 17

4.2 Sensor Setup ................................................................................................................................................... 17

4.3 Sensor Data Logging ........................................................................................................................................ 17

4.4 SENSOR STATUS Menu................................................................................................................................... 17

4.5 SENSOR SETUP Menu .................................................................................................................................... 17

4.6 Calibration......................................................................................................................................................... 19

4.6.1 Zero Cal................................................................................................................................................... 19

4.6.2 One Point Sample Calibration ................................................................................................................. 20

4.6.3 Concurrent Calibration of Two Sensors ................................................................................................... 20

4.6.3.1 Preparing Conductivity Reference Solutions.................................................................................. 21

4.7 Adjusting the Temperature ................................................................................................................................ 21

Section 5 Maintenance ......................................................................................................................................... 23

5.1 Maintenance Schedule ..................................................................................................................................... 23

5.2 Cleaning the Sensor ......................................................................................................................................... 23

Section 6 Troubleshooting ................................................................................................................................... 25

6.1 Error Codes ...................................................................................................................................................... 25

6.2 Warnings .......................................................................................................................................................... 25

6.3 General Troubleshooting .................................................................................................................................. 26

6.4 Checking Sensor Operation .............................................................................................................................. 26

6.4.1 Sensors without the Integral Junction Box............................................................................................... 26

6.4.2 Analog or External Digital Gateway Sensors........................................................................................... 27

6.4.3 Sensor Linearity Check ........................................................................................................................... 28

Section 7 Replacement Parts ............................................................................................................................... 29

7.1 Replacement Items and Accessories................................................................................................................ 29

Section 8 Warranty, liability and complaints ...................................................................................................... 31

8.1 Compliance Information .................................................................................................................................... 32

Table of Contents

Section 9 Adresses .............................................................................................................................................33

Appendix A Additional information for series 34xx sensors ............................................................................35

A.1 Additional information for series 3410 ... 3412 sensors ....................................................................................35

A.1.1 Technical data for the 43410 ... 3412 sensors ........................................................................................35

A.1.2 Installation of the sensors........................................................................................................................35

A.1.3 Installation of the sensor in the flow of sample........................................................................................35

A.2 Additional information for series 3415 ... 3417 sensors ....................................................................................37

A.2.1 Technical data for the 3415 ... 3417 sensors ..........................................................................................37

A.2.2 Installation of the sensors........................................................................................................................37

A.2.3 Installation of the sensor in the flow of sample........................................................................................37

A.3 Additional information for series 3494 sensors .................................................................................................39

A.3.1 Technical data for the 3494 sensors .......................................................................................................39

A.3.2 Installation of the sensors........................................................................................................................39

A.3.3 Installation of the sensor in the flow of sample........................................................................................39

A.4 Digital gateway..................................................................................................................................................41

A.5 Accessories.......................................................................................................................................................42

A.5.1 Technical data for the bypass chambers.................................................................................................42

A.6 Spare parts and accessories.............................................................................................................................44

Appendix B Modbus Register Information .........................................................................................................45

Section 1 Specifications

Specifications are subject to change without notice.

Table 1: 3400sc-series Conductivity Probe Specifications

Components Corrosion-resistant materials, fully-immersible probe with 10 m (30 ft) cable

Measuring Range (Conductivity) See Table 3: " Sensor Cell Constants and Measuring Ranges" on page 5

Measuring Range (Resistivity) See Table 3: " Sensor Cell Constants and Measuring Ranges" on page 5

Measuring Range (TDS) See Table 3: " Sensor Cell Constants and Measuring Ranges" on page 5

Measuring Range (Temperature) –20.0 to 200.0 °C (–4.0 to 392.0 °F)

Operating Temperature/Humidity –20 to 60 °C (–4 to 140 °F); 0–95% relative humidity, non-condensing

Storage Temperature/Humidity –30 to 70 °C (–22 to 158 °F); 0–95% relative humidity, non-condensing

Response Time 90% of reading within 30 seconds of step change

Measurement Accuracy ±2% of reading

Temperature Accuracy ±0.1 °C

Repeatability ±0.5% of reading

Sensitivity ±0.5% of reading

Calibration/Verification Comparison to standard

Sensor Interface Modbus

Standard Probe Cable Length Analog probe: 6 m (20 ft); Digital probe: 10 m (32.8 ft)

Probe Weight 0.3 to 0.4 kg (approximately one pound) dependent on probe type

Dependent on probe type,

Probe Dimensions

see Figure 1: "Compression-style Sensor, 0.5-in. Diameter" on page 8 through

Figure 7: "Boiler/Condensate Sensor" on page 10.

Specifications

Table 2: Specific Conductivity Probe Specifications

Model 3422-series Conductivity/resistivity Sensors

Model 3433-series Conductivity/resistivity Sensors

Wetted Materials

Titanium electrodes (316 stainless steel outer electrode for extended sensor body style used with ball valve assembly), PTFE Teflon insulator, and treated Viton

Graphite electrodes, Ryton body, and Viton® O-ring seals

O-ring seals

Maximum Temperature/Pressure

Sensor with integral digital electronics: limited to 70 °C (160 °F).

Analog sensor with Kynar (PVDF) compression fitting: 150 °C at 1.7 bar (302 °F at 25 psi) or 36 °C at 10.3 bar (97 °F at 150 psi)

Analog sensor with manufacturer-supplied 316 stainless steel compression fitting: 150 °C at

13.7 bar (302 °F at 200 psi) Analog sensor with 316

Analog sensor only: 150 °C at

6.8 bar (302 °F at 100 psi) or 20 °C at 13.7 bar (68 °F at 200 psi)

Analog sensor with hardware: A lower rated mounting hardware or piping material may limit the temperature and pressure ratings listed above.

stainless steel ball valve hardware assemblies: 125 °C at 10.3 bar (302 °F at 150 psi)

Flow Rate

Model 3444-series Conductivity/resistivity Sensors

316 stainless steel and

titanium electrodes, PEEK insulator, and fluoroelastomer O-ring seals

Analog sensor with integral cord grip: 100 °C at 20.7 bar (212 °F at 300 psi)

Analog with integral analog polypropylene J-box Head: 92 °C at 20.7 bar (198 °F at 300 psi)

Analog sensor with integral aluminum or 316 SS J-box head: 200 °C at 20.7 bar (392 °F at 300 psi)

Model 3455-series Conductivity/resistivity Sensors

316 stainless steel electrodes, PTFE Teflon insulator, and pufluoro-elastomer O-ring seals

Analog sensor with manufacturer-supplied sanitary mount hardware assemblies: 150 °C at

10.3 bar (302 °F at 150 psi) or 20 °C at 13.7 bar (68 °F at 200 psi)

0–3 m (0–10 ft) per second (fully immersed)

Temperature Compensator

Pt 1000 RTD Pt 1000 RTD Pt 1000 RTD Pt 1000 RTD

Sensor Cable:

Digital: PUR (polyethylene) 5-conductor, shielded, rated to 105 °C (221 °F); 10 m (33 ft) standard length

Analog: 6-wire cable (four conductors and two isolated shield wires); rated at

Analog: 6-wire cable (four conductors and two isolated shield wires); rated at 150 °C (302 °F); 6 m (20 ft) long

150 °C (302 °F); 6 m (20 ft) long

Other brands of mounting hardware assemblies and sanitary clamps may reduce the listed rating.

Ryton® is a registered trademark of Phillips 66 Co.

Viton

is a registered trademark of E.I. DuPont de Nemours + Co.

Table 3: Sensor Cell Constants and Measuring Ranges

Specifications

Sensor Cell Constant

Inherent Measuring Range

Conductivity (µS/cm) Resistivity (Mohm) TDS Salinity (PPT)

0.05 0–100 0.002–20 See Note

not applicable

0.5 0–1000 0.001-20 See Note1 < 1 1 0–2000 not applicable See Note1 < 2 5 0–10000 not applicable See Note1 < 15

10 0–200000 not applicable See Note1 < 500

To determine which cell constant to use, convert the full-scale TDS value to its equivalent conductivity value at 25 °C by

multiplying the TDS value by 2. Find that value in the conductivity column and use the cell constant that corresponds to that value.

Practical upper limit is 280.

Table 4: Digital Gateway Specifications

Weight 145 g (5 oz)

Dimensions 17.5 x 3.4 cm (7 x 1

Operating Temperature –20 to 60 °C (–4 to 140 °F)

/8 in.)

Specifications

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.

Note: Information that supplements points in the main text.

2.1.2 Precautionary Labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could occur if not observed

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

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.

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. 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 all electrical products (marked or unmarked) which are supplied or produced by Hach-Lange, please contact the local Hach-Lange sales office for instructions for proper disposal.

General Information

2.2 General Sensor Information

The Contacting Conductivity Sensor allows aqueous samples to be easily and accurately analyzed for conductivity. Sensor models are available for applications with temperatures up to 200 °C (392 °F). Refer to Figure 1: and Figure 6: for sensor options.

Optional equipment, such as mounting hardware for the probe, is supplied with instructions for all user installation tasks. Several mounting options are available, allowing the probe to be adapted for use in many different applications.

Figure 1: Compression-style Sensor, 0.5-in. Diameter

Figure 2: Compression-style Sensor, 0.75-in Diameter

Figure 3: Compression-style Sensor with Teflon® Tip

Figure 4: Compression-style Sensor (with integral junction box)

Figure 5: Sanitary (CIP)-style Sensor

General Information

Figure 6: Non-metallic General Purpose Sensor

General Information

Figure 7: Boiler/Condensate Sensor

2.3 The Digital Gateway

The Digital Gateway was developed to provide a means to use existing analog sensors with the new digital controllers. The gateway contains all the necessary software and hardware to interface with the controller and output a digital signal.

2.4 Theory of Operation

The Contacting Conductivity Sensors are designed to accurately measure conductivity/resistivity/TDS/salinity from ultrapure water (0.056 µS/cm) to 200,000 µS/cm in clear fluids. Conductivity is a measure of the ability of a solution to conduct an electric current and resistivity is the measure of the ability of a solution to resist an electric current. Total Dissolved Solids (TDS) is a measure that reflects the amount of solids dissolved in a water sample and salinity is a measure of the dissolved salts in a solution.

Each sensor is available in a variety of precisely measured cell constants and different materials to meet many measurement needs and are ideal for deionization, reverse osmosis, electro-deionization, desalination, chemical purity, and other clear fluid applications.

Each sensor is individually tested to determine its absolute cell constant (shown on its label as K =X) and temperature element value (to the nearest 0.1 ohm). The cell constant (K) and temperature factor (T) are entered during instrument configuration or calibration to ensure the highest possible measurement accuracy.

Available cell constants include: 0.05, 0.5, 1.0, 5.0, and 10. The temperature element was designed to provide fast response to changes in temperature and ensure high measurement accuracy.

Section 3 Installation

DANGER Only qualified personnel should conduct the tasks described in this section of the manual.

The system can be used with any sc controller. Refer to the controller manual for installation instructions.

The Contacting Conductivity sensor may be ordered with an internal or external digital gateway. If you received an external digital gateway, refer to 3.2 "Using the Digital

Gateway" on page 12 for digital gateway connecting/wiring and mounting instructions.

3.1 Connecting the Sensor to an sc Controller

3.1.1 Attaching a sc Sensor with a Quick-connect Fitting

The sensor cable is supplied with a keyed quick-connect fitting for easy attachment to the controller (see Figure 8: "Attaching the Sensor using the Quick-connect Fitting"). Retain the connector cap to seal the connector opening in case the sensor must be removed. Optional extension cables may be purchased to extend the sensor cable length. If the total cable length exceeds 100 m (300 ft), a termination box must be installed.

Note: Use of a load termination box other than Cat. No. 5867000 may result in a hazard.

Figure 8: Attaching the Sensor using the Quick-connect Fitting

Installation

Figure 9: Quick-connect Fitting pin assignment

Number Designation Wire Color

1 +12 VDC Brown 2 Circuit Common Black 3 Data (+) Blue 4 Data (–) White 5 Shield Shield (grey wire in existing quick-disconnect fitting) 6Groove

3.2 Using the Digital Gateway

The digital gateway is designed to provide a digital interface to the controller. The non-sensor end is wired to the controller as shown in "Connecting the Sensor to an sc

Controller" on page 11.

3.2.1 Wiring the sc Sensor to the Digital Gateway

1. Route the cable from the sensor through the strain relief in the digital gateway then properly terminate the wire ends.

Note: Do not tighten the strain relief until the digital gateway is wired and the two halves are threaded securely together.

2. Insert the wires as shown in Table 5: "Wiring the Digital Gateway" and Figure 10:

"Wiring and Assembling the Digital Gateway".

3. Make sure the O-ring is properly installed between the two halves of the digital gateway and thread the two halves together. Hand tighten.

4. Tighten the strain relief to secure the sensor cable.

5. Connect the digital gateway to the controller.

Table 5: Wiring the Digital Gateway

Sensor (wire color) Sensor Signal Digital Gateway Sensor Wire connector

Clear Shield J1-1

Clear w/shrink wrap Shield J1-1

Red Drive J1-2

White Temp – J1-3

Blue Temp + J1-4

Black Sense J1-5

+ 36 hidden pages

Hach-Lange 3400 sc User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual