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Swann AMI Rescon Operator's Manual

Complete monitoring system, version 6.20 and higher
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AMI Rescon
Version 6.20 and higher
A-96.250.461 / 070318

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  • Page 1 AMI Rescon Version 6.20 and higher A-96.250.461 / 070318...
  • Page 2 For any technical question, contact your nearest SWAN representative, or the manufacturer: SWAN ANALYTISCHE INSTRUMENTE AG Studbachstrasse 13 8340 Hinwil Switzerland Internet: www.swan.ch E-mail: support@swan.ch Document Status Monitor AMI Rescon Operator’s Manual Title: A-96.250.461 Revision Issue Sept. 2006 First Edition June 2012 Update to Rev. 4.61 Jan.

  • Page 3: Table Of Contents

    Single Components ........2.4.1 Transmitter AMI Rescon ......2.4.2 Flow Cell QV-Flow and QV-HFlow SS316L 130 .
  • Page 4 AMI Rescon Instrument Setup ........

  • Page 5: Safety Instructions

    AMI Rescon Safety Instructions AMI Rescon - Operator’s Manual This document describes the main steps for instrument setup, oper- ation and maintenance. Safety Instructions General The instructions included in this section explain the potential risks associated with instrument operation and provide important safety practices designed to minimize these risks.

  • Page 6: Warning Notices

    AMI Rescon Safety Instructions 1.1. Warning Notices The symbols used for safety-related notices have the following sig- nificance: DANGER Your life or physical wellbeing are in serious danger if such warnings are ignored.  Follow the prevention instructions carefully. WARNING Severe injuries or damage to the equipment can occur if such warnings are ignored.

  • Page 7: General Safety Regulations

    AMI Rescon Safety Instructions Warning Signs The importance of the warning signs in this manual. Electrical shock hazard Corrosive Harmful to health Flammable Warning general Attention general 1.2. General Safety Regulations Legal The user is responsible for proper system operation.

  • Page 8: Restrictions For Use

    1.3. Restrictions for use The AMI Rescon is designed for determination of specific conduc- tivity or resistivity in high purity water. To avoid clogging the flow cell, prevent sand, oil or solids, from en- tering into the flow cell.

  • Page 9: Product Description

    AMI Rescon Product Description Product Description 2.1. Description of the System This instrument is applicable for the determination of specific resis- tivity or specific conductivity in high purity water. Measuring The resistivity of high purity water is determined with a sensor con- sisting of two metal electrodes.
  • Page 10 AMI Rescon Product Description Input One input for potential-free contact to freeze the measuring value or to interrupt control in automated installations. Programmable as HOLD or OFF function. Communica-  USB Interface for logger download. tion interface  Third signal output (can be used in parallel to the USB interface) (optional) ...
  • Page 11 AMI Rescon Product Description Conductivity The implemented Transmitter Test together with Conductivity QC- Kit Test Plug containing a traceable high precision resistor allows to QC-Kit Test perform a verification of he measuring electronics at any time. Plug Fluidics The flow cell QV-Hflow consists of the flow cell block [D], the flow sensor [B] and the flow regulating valve [E].

  • Page 12: Instrument Specification

    AMI Rescon Product Description 2.2. Instrument Specification Power Supply Voltage: 100–240 VAC (± 10%) 50/60 Hz (± 5%) or 24 VDC (± 10%) Power consumption: max. 30 VA Electronics Aluminium with a protection degree of IP 66 / NEMA 4X...
  • Page 13 AMI Rescon Product Description Dimensions Panel: 280x850x180 mm, stainless steel Mounting hole distance 254x824 Screws: 8 mm diameter Weight: 7.0 kg 280 mm/ 11” 254 mm/ 10” AMI Rescon A-96.250.461 / 070318...

  • Page 14: Instrument Overview

    AMI Rescon Product Description 2.3. Instrument Overview Panel Flow cell Transmitter Sample inlet Sensor RC-U Flow regulating valve Flow sensor Sample outlet A-96.250.461 / 070318...

  • Page 15: Single Components

    AMI Rescon Product Description 2.4. Single Components 2.4.1 Transmitter AMI Rescon Electronic transmitter and controller for conductivity measurement. 18.5 Dimensions Width: 140 mm Height: 180 mm Depth: 70 mm Weight: 1.5 kg Specifications Electronics case: Cast aluminum Protection degree: IP 66 / NEMA 4X...

  • Page 16: Flow Cell Qv-Flow And Qv-Hflow Ss316L 130

    AMI Rescon Product Description 2.4.2 Flow Cell QV-Flow and QV-HFlow SS316L 130 Flow cell made of stainless steel with flow sensor for the connection to SWAN transmitter and with manual flow regulating valve. Con- nection to tube with Swagelok adapter.

  • Page 17: Flow Cell B-Flow Ss316L 130

    AMI Rescon Product Description 2.4.3 Flow Cell B-Flow SS316L 130 Flow cell made of stainless steel SS316L to connect to tubes. For one sensor with ¾" NPT thread, fitting length 89 mm. Technical data Sample inlet: Swagelok G 1/8” thread Sample outlet: Swagelok G 1/8”...

  • Page 18: Swansensor Rc U

    AMI Rescon Product Description 2.4.4 Swansensor RC U Sensor for the measurement of the specific conductivity and specif- ic resistivity in high purity water. 156 89 231 89 Swansensor RC U Swansensor RC U with integrated cable with Plug 0.055–1000 S/cm...

  • Page 19: Installation

    AMI Rescon Installation Installation 3.1. Installation Checklist Monitors Check Instrument’s specification must conform to the National Electri- cal Code, all state and local codes, and all plant codes and stan- dards for electrical equipment. On site require- 100–240 VAC ( 10%), 50/60 Hz ( 5%) or 24 VDC (±10%), ments isolated power outlet with ground connection and 30 VA.

  • Page 20: Mounting Of Instrument Panel

    AMI Rescon Installation 3.2. Mounting of Instrument Panel The first part of this chapter describes the preparing and placing of the system for use.  The instrument must only be installed by trained personnel.  Mount the instrument in vertical position.

  • Page 21: Connecting Sample Inlet And Outlet

    AMI Rescon Installation 3.3. Connecting Sample Inlet and Outlet 3.3.1 Sample Inlet Preparation For the sample inlet a stainless steel tube is connected to the Swa- gelok fitting at the flow cell. Cut the tube to length and deburr it. The tube must be straight and free from blemishes for approximately 1,5 x tube diameter from the end.

  • Page 22: Install Sensor Rcu

    AMI Rescon Installation 3.4. Install Sensor RCU The following instruction applies for all, the flow cell and the pipe flanges. To install the sensor RC U into a flow cell or a pipe flange proceed as follows: Install Sensor Teflon tape...
  • Page 23 AMI Rescon Installation Installation examples for tube installa- tion Sensor Flange Air vent hole Tube Flow direction Sensor Flange Air vent hole Flow direction Tube 1 Wrap 7 turns of teflon tape around the sensor thread. 2 Screw the sensor into the flow cell or the pipe flange.

  • Page 24: Connect The Resistivity Sensor Cable

    AMI Rescon Installation 3.5. Connect the Resistivity Sensor Cable WARNING Electrical shock hazard! Before opening the AMI Transmitter switch power off. Use one of the cable glands to feed the sensor cable into the sen- sor housing. 1 Choose a suitable cable gland, see chapter Electrical Connec- tions, p.

  • Page 25: Electrical Connections

    AMI Rescon Installation 3.7. Electrical Connections WARNING Risk of electrical shock. Do not perform any work on electrical components if the trans- mitter is switched on. Failure to follow safety instructions could result in serious injury or death.  Always turn off AC power before manipulating electric parts.
  • Page 26 AMI Rescon Installation WARNING External Voltage. External supplied devices connected to relay 1 or 2 or to the alarm relay can cause electrical shocks  Make sure that the devices connected to the following con- tacts are disconnected from the power before resuming in- stallation.

  • Page 27: Connection Diagram

    AMI Rescon Installation 3.7.1 Connection Diagram CAUTION Use only the terminals shown in this diagram, and only for the mentioned purpose. Use of any other terminals will cause short circuits with possible corresponding consequences to material and personnel. A-96.250.461 / 070318...

  • Page 28: Power Supply

     Mains cable to comply with standards IEC 60227 or IEC 60245; flammable rating FV1  Mains equipped with an external switch or circuit-breaker – near the instrument – easily accessible to the operator – marked as interrupter for AMI Rescon A-96.250.461 / 070318...

  • Page 29: Relay Contacts

    AMI Rescon Installation 3.8. Relay Contacts Programming of the relay contacts see 5.3 Relay Contacts, p. 65 3.8.1 Input NOTICE: Use only potential-free (dry) contacts. The total resistance (sum of cable resistance and resistance of the relay contact) must be less than 50 Ω.

  • Page 30: Relay Contacts 1 And 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.9. Signal Outputs

    AMI Rescon Installation 3.8.3 Relay Contacts 1 and 2 NOTICE: Rated load 1 AT / 250 VAC Relay 1 and 2 can be configured as normally open or as normally closed. Standard for both relays is normally open. To configure a Relay as normally closed, set the jumper in the upper position.
  • Page 31 AMI Rescon Installation CAUTION Risk of damage of the relays in the AMI Transmitter due to heavy inductive load. Heavy inductive or directly controlled loads (solenoid valves, dosing pumps) may destroy the relay contacts.  To switch inductive loads > 0.1 A use an AMI relay box avail- able as an option or suitable external power relays.

  • Page 32: Signal Output 1 And 2 (Current Outputs)

    AMI Rescon Installation 3.9. Signal Outputs 3.9.1 Signal Output 1 and 2 (current outputs) NOTICE: Max. burden 510 Ω If signals are sent to two different receivers, use signal isolator (loop isolator). Signal output 1: Terminals 14 (+) and 13 (-)

  • Page 33: Signal Output 3

    AMI Rescon Installation 3.10.1 Signal Output 3 Terminals 38 (+) and 37 (-). Requires the additional board for the third signal output 0/4–20 mA. The third signal output can be operated as a current source or as a current sink (switchable via switch [A]). For detailed information see the corresponding installation instruction.

  • Page 34: Hart Interface

    AMI Rescon Installation 3.10.3 HART Interface Terminals 38 (+) and 37 (-). The HART interface PCB allows for communication via the HART protocol. For detailed information, consult the HART manual. HART Interface PCB 3.10.4 USB Interface The USB Interface is used to store Logger data and for Firmware upload.

  • Page 35: Instrument Setup

    AMI Rescon Instrument Setup Instrument Setup 4.1. Establish Sample Flow 1 Open the flow regulating valve. 2 Wait until the flow cell is completely filled. 3 Switch on power. NOTICE: To allow a precise measurement in the range between 18–18.18 MΩ, set the sample flow to 70–100 l/h.
  • Page 36 AMI Rescon Instrument Setup USP Operating Menu 5.1.3 Mode The USP Operating Mode implemented in the firmware of the AMI Rescon transmitter allows the measurement of pharmaceutical wa- ter according to the USP <645>. If the USP Operating Mode is set to <off> conductivity or resistivity standard measurement is performed.

  • Page 37: Operation

    AMI Rescon Operation Operation 5.1. Keys Exit Enter to exit a menu or command (rejecting any changes) to move back to the previous menu level to move DOWN in a menu list and to decrease digits to move UP in a menu list and to increase digits...

  • Page 38: Display

    AMI Rescon Operation 5.2. Display 15:20:18 17.98 MΩ 43.5 l/h 24.8°C normal operation HOLD input closed or cal delay: Instrument on hold (shows status of signal outputs). input closed: control/limit is interrupted (shows status of signal outputs). ERROR Error Fatal Error...

  • Page 39: Software Structure

    AMI Rescon Operation 5.3. Software Structure Main Menu Messages Diagnostics Maintenance Operation Installation Menu Messages 1 Messages Reveals pending errors as well as an event history Pending Errors (time and state of events that have occurred at an Message List earlier point of time).

  • Page 40: Changing Parameters And Values

    AMI Rescon Operation 5.4. Changing Parameters and values Changing The following example shows how to set the Q-Hflow sensor: parameters 1 Select the parameter you want to Sensors 5.1.1 change. Flow None 2 Press [Enter] Meas. Mode Resistivity USP Operating Mode Sensor parameters Temp.

  • Page 41: Maintenance

    AMI Rescon Maintenance Maintenance 6.1. Maintenance Table If necessary Clean sensor According to Perform a transmitter check USP regulations 6.2. Stop of Operation for Maintenance WARNING Electrical shock hazard! Do not carry out maintenance work during normal operation.  Always turn off power before manipulating electric parts.

  • Page 42: Maintenance Of Sensor

    AMI Rescon Maintenance 6.3. Maintenance of Sensor 6.3.1 Clean Sensor The Swansensor RC-U is largely maintenance free. However, de- pending on the application, it can be contaminated, which may cause problems. The Swansensor RC-U is available in the following 2 different ver- sions: ...
  • Page 43 AMI Rescon Maintenance Sensor Flow cell Flow regulating valve Install the 1 Wrap 7 turns of teflon tape around the sensor thread. sensor with fix 2 Screw the sensor into the flow cell and tighten it well. cable 3 Feed the sensor cable into the transmitter housing.
  • Page 44 AMI Rescon Maintenance Remove the 1 Unscrew and remove the sensor plug [A] from the sensor [B]. sensor with 2 Proceed according to “Remove the Sensor with fix cable”, plug step 4. Sensor plug Sensor Install the sen- 1 Wrap 7 turns of teflon tape around the sensor thread.

  • Page 45: Conductivity-Resistivity Qc-Kit Test Plug

    Test mode For a quick and easy test, the AMI Rescon transmitter has the test mode <Transmitter check> that enables testing without changing any of these values. When leaving the test mode, all parameters will be set back to their original value.

  • Page 46: Carry Out A Transmitter Check

    AMI Rescon Maintenance 6.4.2 Carry out a transmitter check Sensor plug Test resistor Sensor RC U Connect the 1 Unscrew and remove the sensor plug [A] from the sensor [C] test resistor 2 Screw the sensor plug onto the test resistor [B].

  • Page 47: Fine Adjust

    6.5. Fine Adjust The function fine adjust is only available if the AMI Rescon is set to the measuring mode resistivity. The function “Fine Adjust” is performed automatically every night at 00:30 h.

  • Page 48: Replacing Fuses

    AMI Rescon Maintenance 6.6. Replacing Fuses WARNING External Voltage. External supplied devices connected to relay 1 or 2 or to the alarm relay can cause electrical shocks.  Make sure that the devices connected to the following con- tacts are disconnected from the power before resuming in- stallation.

  • Page 49: Longer Stop Of Operation

    AMI Rescon Maintenance 6.7. Longer Stop of Operation 1 Stop sample flow. 2 Shut off power of the instrument. 3 Unscrew and remove the sensor. 4 Empty and dry the flow cell A-96.250.461 / 070318...

  • Page 50: Error List

    AMI Rescon Error List Error List Error Non-fatal Error. Indicates an alarm if a programmed value is ex- ceeded. Such Errors are marked E0xx (bold and black). Fatal Error (blinking symbol) Control of dosing devices is interrupted. The indicated measured values are possibly incorrect.
  • Page 51 AMI Rescon Error List Error Description Corrective action – check process E001 Alarm high – check programmed value – check process E002 Alarm low – check programmed value – check process E007 Sample Temp. high – check programmed value – check process E008 Sample Temp.
  • Page 52 AMI Rescon Error List Error Description Corrective action – call service E026 IC LM75 – check wiring on signal outputs 1 and 2 E028 Signal output open – call service E030 EEProm Frontend – call service E031 Calibration Recout – call service...

  • Page 53: Program Overview

    AMI Rescon Program Overview Program Overview For explanations about each parameter of the menus see Program List and Explanations, S.  Menu 1 Messages informs about pending errors and mainte- nance tasks and shows the error history. Password protection possible. No settings can be modified.

  • Page 54: Diagnostics (Main Menu 2)

    AMI Rescon Program Overview 8.2. Diagnostics (Main Menu 2) Identification Designation AMI Rescon * Menu numbers 2.1* Version V6.20-11/16 Factory Test Instrument 2.1.3.1* 2.1.3* Motherboard Front End Operating Time Years / Days / Hours / Minutes / Seconds 2.1.4.1* 2.1.4* Sensors Cond.

  • Page 55: Maintenance (Main Menu 3)

    AMI Rescon Program Overview 8.3. Maintenance (Main Menu 3) Simulation Alarm Relay 3.2.1* * Menu numbers 3.1* Relay 1 3.2.2* Relay 2 3.2.3* Signal Output 1 3.2.4* Signal Output 2 3.2.5* Set Time (Date), (Time) 3.2* Transmitter check 3.3* Fine adjust Current Value 3.5.1*...

  • Page 56: Installation (Main Menu 5)

    AMI Rescon Program Overview 8.5. Installation (Main Menu 5) Sensors Flow * Menu numbers 5.1* 5.1.1* Meas. Mode 5.1.2* USP Operating Mode 5.1.3 Sensor Parameters Cell Constant 5.1.4 Temp. Corr. Cable length Temp. Compensation Comp. 5.1.5.1 5.1.5* Signal Outputs Signal Output 1 and 2 Parameter 5.2.1.1 - 5.2.2.1*...
  • Page 57 AMI Rescon Program Overview Input Active 5.3.4.1* * Menu numbers 5.3.4* Signal Outputs 5.3.4.2* Output/Control 5.3.4.3* Fault 5.3.4.4* Delay 5.3.4.5* Miscellaneous Language 5.4.1* 5.4* Set defaults 5.4.2* Load Firmware 5.4.3* Password Messages 5.4.4.1* 5.4.4* Maintenance 5.4.4.2* Operation 5.4.4.3* Installation 5.4.4.4* Sample ID 5.4.5*...

  • Page 58: Program List And Explanations

    AMI Rescon Program List and Explanations Program List and Explanations 1 Messages 1.1 Pending Errors 1.1.5 Provides the list of active errors with their status (active, acknowl- edged). If an active error is acknowledged, the alarm relay is active again. Cleared errors are moved to the Message list.
  • Page 59 AMI Rescon Program List and Explanations 2.2.2 Miscellaneous: 2.2.2.1 Case Temp: Shows the actual temperature in °C inside the trans- mitter. 2.3 Sample Sample ID: Shows the assigned sample identification. This 2.3.1 identification is defined by the user to identify the location of the sample Temperature: Shows temperature in °C.

  • Page 60: Maintenance

    United States Pharmacopeia (USP). See Conductivity-Resistivity QC-Kit Test Plug, p. 3.5 Fine adjust The function fine adjust is only available if the AMI Rescon is set to the measuring mode resistivity. The function “fine adjust” performs an internal resistor adjustment. A-96.250.461 / 070318...

  • Page 61: Operation

    AMI Rescon Program List and Explanations 4 Operation 4.1 Sensors 4.1.1 Filter Time Constant: Used to damp noisy signals. The higher the filter time constant, the slower the system reacts to changes of the measured value. Range: 5–300 Sec 4.1.2 Hold after Cal: Delay permitting the instrument to stabilize again af- ter calibration.

  • Page 62: Installation

    AMI Rescon Program List and Explanations 5 Installation 5.1 Sensors 5.1.1 Flow: With the Monitor a QV-Hflow flow cell is supplied as standard. Select the type of flow cell, possible flow cells: Mode B-Flow Q-Flow QV-flow None Q-flow Q-Hflow Selection of the suitable flow cell.

  • Page 63: Function

    AMI Rescon Program List and Explanations 5.2 Signal Outputs NOTICE: The navigation in the menu <Signal Output 1> and <Signal Output 2> is identical. For reason of simplicity only the menu numbers of Signal Output 1 are used in the following.
  • Page 64 AMI Rescon Program List and Explanations [mA] 0 / 4 1’000 10’000 X Measured value (logarithmic) 5.2.1.40 Scaling: Enter beginning and end point (Range low & high) of the linear or logarithmic scale. In addition, the midpoint for the bilinear scale.
  • Page 65 AMI Rescon Program List and Explanations As control Signal outputs can be used for driving control units. We distinguish different kinds of controls: output  P-controller: The controller action is proportional to the devia- tion from the setpoint. The controller is characterized by the P-Band.
  • Page 66 AMI Rescon Program List and Explanations If Control upwards or Control downwards is active Setpoint: User-defined process value (Measured value or flow) P-Band: Range below (upwards control) or above (downwards control) the set-point, within the dosing intensity is reduced from 100% to 0% to reach the set-point without overshooting.
  • Page 67 AMI Rescon Program List and Explanations 5.3 Relay Contacts 5.3.1 Alarm Relay: The alarm relay is used as cumulative error indicator. Under normal operating conditions the contact is active. The contact is inactive at:  Power loss  Detection of system faults like defective sensors or electronic parts ...
  • Page 68 AMI Rescon Program List and Explanations 5.3.1.2 Sample Flow: Define at which sample flow a flow alarm should be issued. 5.3.1.2.1 Flow Alarm: Program if the alarm relay should be activated if there is a flow alarm. Choose between yes or no. The flow alarm will al- ways be indicated in the display, pending error list, saved in the message list and the logger.

  • Page 69: Parameter

    AMI Rescon Program List and Explanations 5.3.2 and 5.3.3 Relay 1 and 2: The contacts can be set as normally open or nor- mally closed with a jumper. See Relay Contacts 1 and 2, p. 28. The function of relay contacts 1 or 2 are defined by the user.
  • Page 70 AMI Rescon Program List and Explanations 5.3.2.50 Delay: Duration, the activation of the alarm relay is retarded after the measuring value has risen above/fallen below the programmed alarm. Range. 0–600 Sec 5.3.2.1 Function = Control upwards/downwards: The relays may be used to drive control units such as solenoid valves, membrane dosing pumps or motor valves.
  • Page 71 AMI Rescon Program List and Explanations Actuator = Motor valve Dosing is controlled by the position of a motor driven mixing valve. 5.3.2.32.22 Run time: Time needed to open a completely closed valve Range: 5–300 Sec. 5.3.2.32.32 Neutral zone: Minimal response time in % of the runtime. If the re- quested dosing output is smaller than the response time, no change will take place.
  • Page 72 AMI Rescon Program List and Explanations 5.3.2.7 Output/Control: Select operating mode of the controller output: Cont.: Controller continues normally. Hold: Controller continues based on the last valid value. Off: Controller is switched off. 5.3.2.24 daily The relay contact can be activated daily, at any time of a day.
  • Page 73 AMI Rescon Program List and Explanations 5.3.2.1 Function = Fieldbus The relay will be switched via the Profibus input. No further param- eters are needed. 5.3.4 Input: The functions of the relays and signal outputs can be de- fined depending on the position of the input contact, i.e. no function, closed or open.
  • Page 74 AMI Rescon Program List and Explanations 5.4 Miscellaneous 5.4.1 Language: Set the desired language. Language German English French Spanish 5.4.2 Set defaults: Reset the instrument to factory default values in three different ways: Set defaults Calibration In parts Completely  Calibration: Sets calibration values back to default. All other values are kept in memory.
  • Page 75 AMI Rescon Program List and Explanations 5.4.6 Line Break Detection: Define if message E028 should be issued in case of a line break on signal output 1 or 2. Choose between <Yes> or <No>. 5.5 Interface Select one of the following communication protocols. Depending on your selection, different parameters must be defined.

  • Page 76: Default Values

    AMI Rescon Default Values Default Values NOTICE: The AMI Rescon has two different measuring modes (Resistivity or Conductivity) which can be set in menu <Installation>/<Sensors>/<Meas. Mode>. The instrument remains in the selected operating mode even after the <Default Values> are reset completely. Therefore this default value list is divided in the two parts Resistivity and Conductivity where necessary.
  • Page 77 AMI Rescon Default Values Scaling: Range low:..............0.0 °C Scaling: Range high: ............50.0 °C Alarm Relay: Alarm: Resistivity Alarm high: ................200 MΩ Alarm low:................0.00 MΩ Hysteresis:................1.00 MΩ Conductivity Alarm high: ................2000 µS Alarm low:................0.000 µS Hysteresis:................10.00 µS...
  • Page 78 AMI Rescon Default Values Settings: Pulse Frequency: ..........120/min Settings: Control Parameters: Setpoint: ......25.0 l/h Settings: Control Parameters: P-band:........1 l/h Settings: Control Parameters: Reset time: ....... 0 s Settings: Control Parameters: Derivative Time: ....... 0 s Settings: Control Parameters: Control Timeout:....0 min Settings: Actuator:..........

  • Page 79: Index

    AMI Rescon Index Index ....Alarm Relay Modbus . . . Mounting requirements ..Cable thicknesses .

  • Page 80: Notes

    AMI Rescon Notes Notes A-96.250.461 / 070318...
  • Page 81 AMI Rescon Notes A-96.250.461 / 070318...
  • Page 82 AMI Rescon SWAN is represented worldwide by subsidiary companies and distributors. cooperates with independent representatives all over the world. SWAN Products Analytical Instruments for: High Purity Water Feedwater, Steam and Condensate Potable Water Pool and Sanitary Water Cooling Water Waste Water and Effluents Made in Switzerland A-96.250.461 / 070318...

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