Instruction Manual for GREISINGER models including: LF 425 Conductivity Measuring Cell, LF 425, Conductivity Measuring Cell, Measuring Cell

GREISINGER LF 210 (01) PDF MANUAL - Manual-Hub.com


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GREISINGER LF 210 (01)
Z42.0.11.6C-01

Conductivity measuring cell

as of version 1.7

Operating Manual

LF ...

LF 425

LF 400

LF 210

WEEE-Reg.-Nr. DE 93889386

GHM Messtechnik GmbH · Standort Greisinger Hans-Sachs-Str. 26 · D-93128 Regenstauf
 +49 (0) 9402 / 9383-0  +49 (0) 9402 / 9383-33  info@greisinger.de
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Z42.0.11.6C-01

Operating Manual LF ... RW

Page 2 of 4

CONTENTS
1 Intended use .......................................................................................................................... 2 2 General advice ....................................................................................................................... 2 3 Safety instructions .................................................................................................................. 2 4 Operating and maintenance: .................................................................................................. 3 5 General information about conductivity measuring ................................................................ 3 6 Disposal notes........................................................................................................................ 3 7 Assignments........................................................................................................................... 4 8 Specification ........................................................................................................................... 4

1 Intended use
Measurements of conductivity resistivity, salinity and TDS fitted with the devices GMH 5430/50, GHM Silverline SLC
Applications: Aquaristics , Fish farming Drinking water petrol, diesel: LF 210
etc.
2 General advice
Read through this document attentively and make yourself familiar to the operation of the device before you use it. Keep this document in a ready-to-hand way in order to be able to look up in the case of doubt.
3 Safety instructions
This device has been designed and tested in accordance to the safety regulations for electronic devices. However, its trouble-free operation and reliability cannot be guaranteed unless the standard safety measures and special safety advises given in this manual will be adhered to when using it.
1. Trouble-free operation and reliability of the device can only be guaranteed if it is not subjected to any other climatic conditions than those stated under "Specification".
2. Warning: Do not use this product as safety or emergency stop device or in any other application where failure of the product could result in personal injury or material damage. Failure to comply with these instructions could result in death or serious injury and material damage

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Operating Manual LF ... RW

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4 Operating and maintenance:

Treat device and probes carefully. Use only in accordance with above specification. (do not throw, hit against etc.). Protect from soiling. The measuring cell must never come into contact with water-repellent materials such as oil or silicone. Cleaning

Contamination Cleaning Solution water soluble deionized water
grease , oil warm water and household cleaning solution

5 General information about conductivity measuring
Basically there are two types of measuring cells: 2-pole and 4-pole cells. The operation is done similarly; the 4-pole measuring cells can compensate polarization effects and ­ up to some degree ­ soiling due to its complex measuring method.

2-pole measuring cell

4-pole measuring cell

The selection of a suitable electrode depends on the desired application.

The widest range of application is guaranteed by high-quality 4-pole graphite measuring cells (LF 400 or LF 425, all the above applications and: seawaters, titration and sewage).

2-pole platinum electrodes with glass shaft are good solution for used in petrol, diesel, etc. with low conductivities (< 1000 µS/cm) (LF 210)

6 Disposal notes
This device must not be disposed as "residual waste". To dispose this device, please send it directly to us (adequately stamped). We will dispose it appropriately and environmentally friendly.

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7 Assignments
Front View

Operating Manual LF ... RW

Pin LF 210
1 measuring cell 1 2 measuring cell 1 3 measuring cell 2 4 measuring cell 2 5 temperature
6 temperature 7 Not connected

LF 400 / 425
supply 1 signal 1 signal 2 supply 2 temperature
temperature Not connected

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8 Specification

Measuring Cell number of electrodes Material
materials in contact to media
Cell constant Temperature measurement
Sensor
Meas. Ranges Conductivity Temperature
Dimensions Shaft diameter Shaft length Cable length Immersion depth
Guarantee Accuracy
Conductivity: depending on display instrument Temperature Nominal temperature Ambient temperature Storage temperature Connection

LF 210 2
platinum glass
platinum
1 ± 0,2 cm-1

FL 400 4
graphite 316 stainless steel
graphite epoxy 0,55 ± 0,04 cm-1

LF425 4
graphite PVC-C graphite epoxy 0,4 ± 0,02 cm-1

NTC (10 k / 25 °C)

NTC (10 k / 25 °C)

Pt 1000

0...1000 µS/cm -5...+80 °C

0...200 mS/cm -5...+80 °C

0...1000 mS/cm -5...+80 °C

12 mm

12 mm

16 mm

120 mm

120 mm

145 mm

ca. 1 m

ca. 1 m

1 m

100 mm

100 mm

100 mm

12 month (assuming appropriate usage)

Better ±0,5% of m.v. ±0,2 % FS

Better ±0,5% of m.v

or ±2 s/cm

±0,1 % FS

or ±2 s/cm

±0.2 K

25 °C

-5 ... +80 °C ((short time 100 °C)

-5 ... +80 °C

plug 7pol bayonet fitting (IP65)

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