Georg Fischer 2839-1V, 2840-1V, 2841-1V, 2842-1V Operating Manual

Signet 2839-1V to 2842-1V PVDF Conductivity Electrodes

*3-2840.090-1*

3-2840.090-1 Rev. B 01/15

Operating Instructions

Table of Contents

English

2839: 0.01 cm-12840: 0.1 cm

2841: 1.0 cm

2842: 10.0 cm

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Warranty Information ............................................................................ 2

Product Registration ............................................................................. 2

Safety Information................................................................................. 2

Specifi cations........................................................................................ 3

Dimensions ........................................................................................... 3

Cell Constant Selection ........................................................................ 4

Custom Cell Certifi cate ......................................................................... 4

Installation............................................................................................. 4

In-Line Installation................................................................................. 4

Submersible Installation........................................................................ 5

Integral Installation................................................................................ 5

General Wiring ...................................................................................... 6

ProcessPro Wiring ................................................................................ 6

SmartPro Wiring ................................................................................... 6

Maintenance ......................................................................................... 7

2842 Insulator ....................................................................................... 7

Ordering Information ............................................................................. 8

• English

• Deutsch

• Français

• Español

• Italiano

• 中文

Warranty Information

Safety Information

Refer to your local Georg Fischer Sales offi ce for the most
current warranty statement.

All warranty and non-warranty repairs being returned must
include a fully completed Service Form and goods must be
returned to your local GF Sales offi ce or distributor.
Product returned without a Service Form may not be
warranty replaced or repaired.

Signet products with limited shelf-life (e.g. pH, ORP, chlorine
electrodes, calibration solutions; e.g. pH buffers, turbidity
standards or other solutions) are warranted out of box but not
warranted against any damage, due to process or application
failures (e.g. high temperature,
mishandling (e.g. broken glass,

chemical poisoning, dry-out) or

damaged membrane, freezing

and/or extreme temperatures).

Product Registration

Thank you for purchasing the Signet line of Georg Fischer
measurement products.

If you would like to register your product(s), you can now
register online in one of the following ways:

• Visit our website www.gfsignet.com.
Under Service and Support click on

Product Registration Form

• If this is a pdf manual (digital copy),

click here

1. Depressurize and vent system prior to installation or
removal.

2. Confi rm chemical compatibility before use.

3. Do not exceed maximum temperature/pressure
specifi cations.

4. Wear safety goggles or faceshield during installation/
service.

5. Do not alter product construction.

6. When using chemicals or solvents care should be taken
and appropriate eye, face, hand, body, and/or respiratory
protection should be used.

Caution / Warning / Danger

Indicates a potential hazard. Failure to follow all warnings
may lead to equipment damage, injury, or death

Electrostatic Discharge (ESD) / Electrocution Danger

Alerts user to risk of potential damage to product by ESD,
and/or risk of potential of injury or death via electrocution.

Personal Protective Equipment (PPE)

Always utilize the most appropriate PPE during
installation and service of Signet products.

Pressurized System Warning

Sensor may be under pressure, take caution to vent
system prior to installation or removal. Failure to do so
may result in equipment damage and/or serious injury.

Hand Tighten Only

Overtightening may permanently damage product threads
and lead to failure of the retaining nut.

Do Not Use Tools

Use of tool(s) may damage product beyond repair and
potentially void product warranty.

Note / Technical Notes

Highlights additional information or detailed procedure.

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Signet PVDF Conductivity Sensors

Specifi cations

59.3 mm
(2.33 in.)

73.7 mm
(2.90 in.)

140.7 mm
(5.54 in.)

15.9 mm

(0.625 in.)

21.5 mm
(0.85 in.)

35.8 mm
(1.41 in.)

102.7 mm
(4.05 in.)

15.9 mm

(0.625 in.)

15.9 mm

(0.625 in.)

26.8 mm
(1.13 in.)

109 mm

(4.29 in.)

41.9 mm
(1.65 in.)

Dimensions

General

Instrument Compatibility .......2850, 8850-3, 8860, 9900

Cable

4.6 m (15 ft) std., 3 conductor with shield, 22 AWG,
max length 30 m (100 ft). For resistivity measurements above
10 MΩ or below 20 °C, maximum cable length is 7.6 m (25 ft).

Process Connection

-1V ........................................

-1VD ......................................ISO 7/1-R 3/

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/4 in. NPT

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Wetted materials

Threaded fi tting.........................PVDF

Insulator ....................................PVDF

Insulator O-ring (2841, 2842) ...FPM

Electrode contacts ....................316L stainless steel

Shipping Weight

2839..........................................0.34 kg (0.74 lb)

2840, 2841, 2842......................0.30 kg (0.66 lb)

Performance

Accuracy ...................................±2% of cell value

Temp. measurement .................PT1000

Temp. response time (T):

2839 ......................................5 s

2840 ......................................10 s

2841 ......................................20 s

2842 ......................................30 s

Operating Pressure / Temperature

With thread engagement per ANSI B1.20.1

-10 ºC to 100 ºC @ 6.9 bar (14 ºF to 212 ºF @ 100 psi)

-10 ºC to 131 ºC @ 2.76 bar (14 ºF to 268 ºF @ 40 psi)

Storage Temperature ................ -20 ºC to 131 ºC

(-4 ºF to 268 ºF)

2839: 0.01 cm

2840: 0.1 cm

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-1

PSIBAR
100

7

75

5

50

3

2

25

°C

°F

-20-40

32 68

20

60

140

100 140

212

Standards and Approvals

• Manufactured under ISO 9001 for Quality,
ISO 14001 for Environmental Management and
OHSAS 18001 for Occupational Health and Safety.

• RoHS Compliant

China RoHS (Go to www.gfsignet.com for details)

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2841: 1.0 cm-12842: 10.0 cm

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Signet PVDF Conductivity Sensors

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