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Summary of Contents for Hach POLYMETRON 8398
- Page 1 DOC024.52.93026 POLYMETRON Model 8398 Inductive Probe User Manual 06/2015, Edition 5...
- Page 3 Currently, monitoring and control instruments do not fall within the scope of the RoHS Directive, however Hach Lange has taken the decision to adopt the recommendations in the Directive as the target for all future product design and component purchasing.
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Page 5: Table Of Contents
Inductive Probe 8398 Table of contents INTRODUCTION....................3 1.1 General ........................3 1.2 Probes........................3 OPERATING PRINCIPLE.................. 4 2.1 Conductivity reminder ....................4 2.2 Principle of inductive technology................5 TECHNICAL SPECIFICATIONS ............... 6 3.1 Specifications ......................6 3.2 Compliance ......................7 PROBE START-UP ................... 7 4.1 Cable connection .....................7 4.2 Use with a 8921 conductimeter................8 4.3 Use with a 9125 conductimeter................9 PROBE CALIBRATION.................. -
Page 6: Introduction
Inductive Probe 8398 INTRODUCTION 1.1 General The 8398 range of probes makes use of inductive technology, which is particularly recommended for corrosive and soiling uses, making use of conductivity or concentration measurements. The main uses are as follows: - Determination of solution concentrations: in-place cleaning, regeneration of resin in water processing plants, surface treatment. -
Page 7: Operating Principle
Inductive Probe 8398 OPERATING PRINCIPLE 2.1 Conductivity reminder Electrolytic conductivity refers to the ability of a liquid to conduct an electrical current (conductivity is the opposite of resistivity). In metals, the electrical current flows by electron displacement, in liquids it flows by ion transport. -
Page 8: Principle Of Inductive Technology
Inductive Probe 8398 2.2 Principle of inductive technology 1 : Receiver 2 : Oscillator 3 : Cables 4 : Thermoplastic insulator 5 : Receiver 6 : Transmitter 7 : Induced current The 8398 probes are made up of two coils that are completely insulated from the process: x The primary (or transmitter) coil, supplied with alternating voltage, produces an alternating electromagnetic field that generates an electrical current in the solution. -
Page 9: Technical Specifications
Inductive Probe 8398 TECHNICAL SPECIFICATIONS 3.1 Specifications Measurement range 0 to 2000 mS/cm r 2 % of the displayed value or r 0.004 mS/cm Precision Conductivity response < 1 s Temperature response T 50 % = 20 s T 90 % = 2 mn Cell constant K = 2.35 cm Roughness... -
Page 10: Compliance
Inductive Probe 8398 3.2 Compliance i Probes are factory tested and are delivered with a certificate of compliance with specifications. Models 8398.2 and 8398.3 are particularly well-suited to applications where sanitary requirements are extremely stringent (compliance with the European food directive 90/128/CE modified by directive 93/9/CE). -
Page 11: Use With A 8921 Conductimeter
Inductive Probe 8398 4.2 Use with a 8921 conductimeter EPROM The use of a type 8398 inductive probe connected to a type 8921 2-channel conductimeter requires that this latter be fitted with a software version greater than or equal to the following versions: Software Minimum Memory reference... -
Page 12: Use With A 9125 Conductimeter
Inductive Probe 8398 4.3 Use with a 9125 conductimeter Set the two switches (I/K) inside the instrument to position I. Check that the measurement type is set to inductive. PROBE CALIBRATION REMARK: For more detailed information, see the user instructions of out 9125 and 8921 transmitters. - Page 13 Inductive Probe 8398 REMARK : After returning to measurement mode, the value displayed by the transmitter takes account of the cell constant and also of temperature compensation. Example: 200 Ohms on decade box, T = 20 °C, transmitter set for 25 °C compensation with a coefficient of 2 %, unit mS/cm: DISPLAY: [2.35/200].
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Page 14: Installation Precaution
Inductive Probe 8398 INSTALLATION PRECAUTION Minimum distance between probe and conduit When the electrical field lines are partially obstructed by a wall, the measured conductivity is altered (increased if the wall is a conductor, decreased if it is an insulator). With our "high performance" shielding system, 100 % of the field lines of our probe are channelled to within less than 10 mm, thus allowing measurements to be made without disturbance in DN65 conduits . - Page 15 Inductive Probe 8398 Installation direction The opening of the probe must face the conduit's flow direction, thus avoiding the influence of flow rate and to perform the self-cleaning of this opening. For optimal operation, the "POLYMETRON" marking should be positioned in the conduit's flow direction, as shown in the following figure: o : flow direction in the conduit...
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Page 16: Accessories
Inductive Probe 8398 ACCESSORIES There are three probe versions, that are distinguished by the type of connector used. 7.1 Probe 8398.2, 2" clamp model (08398=A=2000) APPLICATION: FREE FLOW Number: Reference: Designation Installation 2" stainless steel clamp collar 581=000=510 429=500=510 EPDM joint for 2" clamp 581=100=510 2"... -
Page 17: Probe 8398.3, Din 11851 / Dn50 Dairy Connection Model (08398=A=3000)
Inductive Probe 8398 7.2 Probe 8398.3, DIN 11851 / DN50 dairy connection model (08398=A=3000) APPLICATION: FREE FLOW... - Page 18 Inductive Probe 8398 Designation Number: Reference: Installation Stainless steel DN50 DIN screw 402=400=500 429=600=500 EPDM DIN DN50 joint 429=600=501 VITON DIN DN50 joint 581=200=500 DIN DN50 stainless steel ferrule to weld (H = 35 mm) 1+2+6 08398=A=0500 Kit with DN50 stainless screw + EPDM Min.
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Page 19: Probe 8398.5, 1" Threaded Model Gas
Inductive Probe 8398 7.3 Probe 8398.5, 1" threaded model gas Remark: Flanges are not supplied individually. This model is a universal model, specially adapted to immersion measurements. it is supplied as standard with an EPDM sheet gasket, an optional Viton joint (ref. - Page 20 Inductive Probe 8398 Reference Material Immersion (m) Flange Immersion Adapter required setting 08335=A=5005 DN65 PVC Adjustable 08398=A=1014 (H = 150 mm) 08335=A=5010 DN65 PVC Adjustable 08398=A=1014 08335=A=5015 DN65 PVC Adjustable 08398=A=1014 08335=A=5020 DN65 PVC Adjustable 08398=A=1014 08398=A=6005 DN50 PP Fixed 08398=A=6010 DN50 PP Fixed...
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Page 21: Maintenance
Inductive Probe 8398 MAINTENANCE WARNING: Read the "installation precaution" and "cable connection" chapters carefully. If there is a doubt concerning the operation of a probe, disconnect it from the transmitter, leaving it in place on your process and ensure that you obtain the following resistance values (see 4.1 Cable connection): R (1-2) | 110 : (at 25 °C) (Temperature sensor Pt100) R (3-4) | [1…2] : (Secondary coil) -
Page 22: Precautionary Labels
Inductive Probe 8398 PRECAUTIONARY LABELS Read all labels and tags attached to the instrument. Personal injury or damage to this instrument could occur if not observed. 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. -
Page 23: Chemical Resistance Table
Inductive Probe 8398 10. CHEMICAL RESISTANCE TABLE 0: yes, -: no, (°C) PEEK PVDF x: momentarily Sulphuric acid Hydrochloric acid Nitric acid < 25 Phosphoric acid < 25 Hydrofluoric acid Acetic acid glacial Formic acid Citric acid Calcium hydroxide Potassium hydroxide Sodium hydroxide Ammonia Ammonium chloride... - Page 24 Inductive Probe 8398 0: yes, -: no, EPDM VITON 316 L x: momentarily Sulphuric acid Hydrochloric acid Nitric acid < 25 Phosphoric acid < 25 Hydrofluoric acid Acetic acid glacial Formic acid Citric acid Calcium hydroxide Potassium hydroxide Sodium hydroxide Ammonia Ammonium chloride Zinc chloride...
- Page 28 HACH COMPANY World Headquarters HACH LANGE GMBH HACH LANGE Sàrl P.O. Box 389, Loveland, CO 80539-0389 U.S.A. Willstätterstraße 11 6, route de Compois Tel. (970) 669-3050 D-40549 Düsseldorf, Germany 1222 Vésenaz (800) 227-4224 (U.S.A. only) Tel. +49 (0) 2 11 52 88-320...
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