YSI 4211, 4210W Operating Manual

OPERATIONS MANUAL

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4210W
4211

ORP ELECTRODE

4210W / 4211

For the most recent version of the manual, please visit

www.ysi.com

.

Contact YSI

1725 Brannum Lane
Yellow Springs, OH 45387 USA
Tel: [phone]

800-765-4974
Email: [e-mail]
Internet: www.ysi.com

Copyright © 2018 Xylem Inc.

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4210W / 4211 General information

Refilling
opening

1 General information

Automatic sensor

recognition

The sensor electronics with the stored sensor data are in the connecting
head of the electrode. The data include, among other things, the sensor type
and series number. The data are recalled by the meter when the sensor is
connected and are used for measurement and for measured value documen­tation.

The digital transmission technique guarantees the failure-free communica­tion with the meter even with long connection cables. The sensor firmware
can be updated via the meter.

2 Commissioning, measuring, checking

2.1 Commissioning

Scope of delivery  Electrode 4210W or 4211

 Operating manual

Commissioning Prepare the electrode for measuring as follows:

 Open the refilling opening for the reference electrolyte solution. Depend-

ing on the model, the stopper of the refilling opening is an elastomer stop­per or a slider.

The refilling opening must always be open during measurement!

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 Remove the watering cap from the electrode tip. Possible salt deposits in

the area of the watering cap do not affect the measuring characteristics
and can easily be removed with deionized water.

Please keep the watering cap. It is required for the electrode to
be stored. Always keep the watering cap clean.

 Connect the sensor to the meter.

The sensor is immediately ready to measure.

4211 – via the sensor cable to a free IDS connec-

tor on the meter

3

Commissioning, measuring, checking 4210W / 4211

4210W – via a connecting cable (accessory) to a

free IDS connector on the meter

or
– wireless via an IDS WA-S adapter (acces-

sory) to a WA-capable meter

Accessories for the connection of the 4211W
sensor to the meter: See chapter 7 W

PARTS AND ACCESSORIES.

EAR

Opening and closing the IDS plug connection,
see section 2.2O

PLUG CONNECTION.

PENING AND CLOSING THE IDS

 Measure with the electrode according to the operating manual of the meter

and observe the following rules while doing so:

4

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4210W / 4211 Commissioning, measuring, checking

2

4

3

1

Plug connection
closed and locked

Guidance

Groove

2.2 Opening and closing the IDS plug connection

This section only applies to variants with IDS plug (4210W).

Opening the plug

connection

Closing the plug

connection

 If necessary, clean the plug connection

 Open the locking device (step 1)

 Use your thumb and index finger to press the clips of the connector togeth-

er, and pull the connector out of the plug (step 2).

 Make sure that the plug connection is perfectly dry and clean.

 Align the guidance of the coupling to the groove in the plug and insert the

coupling into the unlocked plug up to the stop (step 3)

 Close the locking device (step 4)

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5

Commissioning, measuring, checking 4210W / 4211

2.3 Measuring: General rules

 Make sure the refilling opening for the reference electrolyte solution is

open.

 Avoid the carryover of sample solution from one measurement to the next

as follows:

– Shortly rinse the sample beakers with the solution the beakers are to

be filled with next.

– Between measurements, rinse the electrode with the solution that fol-

lows. Alternatively, you can also rinse the electrode with deionized
water and then carefully dab it dry.

 Immerse the electrode in the solution in a vertical or slightly tilted position.

 Make sure the immersion depth is correct. The junction must be com-

pletely submersed in the solution. The junction is in the area of the bottom
end of the shaft (see arrow).

Conversion to nor­mal hydrogen elec-

trode

4210W / 4211

At the same time, the level of the reference electrolyte must be at least 2
cm above the level of the solution.

U

= U

H

with: U

Meas

H

U

Meas

U

Ref

+ U

Ref

= ORP, referring to the normal hydrogen electrode

= Measured ORP

= Voltage of the reference system compared to the normal

hydrogen electrode

U

is temperature dependent and can be taken from the following table (see

Ref

also DIN 38404-6):

T (°C) U

[mV] T (°C) U

Ref

Ref

[mV]

4210W / 4211 4210W / 4211

0 +224 35 +200

5 +221 40 +196

10 +217 45 +192

6

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4210W / 4211 Storage

Checking with

Zobell ORP buffer

solution

(YSI 3682)

T (°C) U

[mV] T (°C) U

Ref

Ref

[mV]

4210W / 4211 4210W / 4211

15 +214 50 +188

20 +211 55 +184

25 +207 60 +180

30 +203

URef is temperature dependent and can be taken from the following table:

T (°C) U [mV] T (°C) U [mV]

4210W / 4211 4210W / 4211

0 +262 30 +214

5 +254 35 +206

10 +246 40 +199

15 +238 45 +191

20 +230 50 +183

During short mea-

suring breaks

Overnight or lon-

ger

25 +222

3Storage

Immerse the electrode in the reference electrolyte with the refilling opening
open.

electrode Reference electrolyte Model

(see page 10)

4210W / 4211 3 mol/l KCl, Ag

Prior to the next measurement, shortly rinse the electrode with the test
sample or deionized water.

Insert the clean electrode into the watering cap filled with reference electro­lyte and shut the refilling opening.

During longer storing periods, salt sediments may develop on the
watering cap. They do not affect the measuring characteristics
and can easily be removed with deionized water when the elec­trode is put into operation again.

+

free KCl-250 (250 ml)

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Aging 4210W / 4211

4Aging

ORP electrodes are consumables. Every ORP electrode undergoes a natural
aging process. Extreme operating conditions can considerably shorten the
lifetime of the electrode. These are:

 Strong acids or lyes, hydrofluoric acid, organic solvents, oils, fats, bro-

mides, sulfides, iodides, proteins

 High temperatures

 High changes in pH and temperature.

The warranty does not cover failure caused by measuring conditions and
mechanical damage.

5 Maintenance and cleaning

During operation, a small amount of reference electrolyte leaks through the
junction from the electrode into the test sample. If the level of reference elec­trolyte becomes too low with time, refill it through the refilling opening.

Refilling the refer-

ence electrolyte

Refilling is very easy using a dropping bottle. Proceed as follows:

 Cut off the tip of the dropping bottle at a right angle until the opening in the

tip can be seen

 Open the refilling opening of the electrode

 Press the tip of the dropping bottle into the refilling opening while turning

it slightly

 Pump several small quantities of the reference electrolyte into the stem

using the dropper bottle

 Pull the dropping bottle out of the refilling opening while turning it slightly

as necessary.

Cleaning Remove water-soluble contamination by rinsing with deionized water.

8

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4210W / 4211 Technical data

Remove other contamination as follows:

Contamination Cleaning procedure

Fat and oil Rinse with water containing household washing-up

liquid

Lime and hydroxide

Rinse with citric acid (10 % by weight)

deposits

After cleaning Rinse the electrode with deionized water.

6 Technical data

Measurement and

application char-

acteristics

Accuracy of the

IDS measuring

technique

General data Reference electrolyte 3 mol/l KCl, Ag

mV measuring range - 1250.0 ... + 1250.0

Allowed temperature range 0 ... 100 °C (32 ... 212 °F)

Typical application Laboratory

Measured parameter Accuracy (± 1 digit)

U [mV] ± 0.2

T [°C] ± 0.1

Junction Ceramic

Double junction Yes

Electrode material and shape Platinum / circle

+

free

Connection cable Lengths 4211: 1.5 m

4210W: 1.5 / 3 m

Diameter 4.3 mm

Smallest allowed
bend radius

Fixed installation:20 mm
Flexible use:60 mm

Plug type Socket, 4 -Ppoles

Shaft dimensions,

material

Shaft length 120 mm

Shaft diameter 12 mm

Shaft material Glass

IDS plug  Plastic parts: Glass fiber reinforced

Noryl, TPU, TPC-ET, POM, PVC,
PEEK, PBT

 O-ring: FPM

 Contacts gold-plated

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Wear parts and accessories 4210W / 4211

IDS plug Connection type 4-P-pin, watertight plug connection with

locking device, reverse polarity protected

Storage With watering cap; filled with KCl 3 mol/L, Ag+ free

7 Wear parts and accessories

Maintenance

equipment

Connection cable

4211 - meter

Radio connection

4210W - meter

Description Model Order no.

Reference electrolyte solution 250 ml
to fill the watering cap
(KCl 3 mol/l, Ag

Zobell ORP buffer solution (125 ml) 3682 061320Y

Description Model Order no.

IDS connection cable, 1.5 m IDS-CABLE-

IDS connection cable, 3 m IDS-CABLE-3 903 851Y

Description Model Order no.

WA capable IDS meter
+ radio module for IDS meter

Radio module for plug head sensor IDS WA-S 108 141Y

+

-free)

KCl-250 109 705Y

903 850Y

1.5

see Internet

10

8 Disposal

At the end of its operational lifetime, the electrode must be returned to the
disposal or return system statutory in your country (electronic waste). If you
have any questions,
please contact your supplier.

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4210W / 4211 Contact Information

Contact Information

Ordering & Technical Support

Telephone

Fax

: [phone]

Email

Mail: YSI Incorporated

Internet

When placing an order please have the following information available:

YSI account number (if available) Name and Phone Number
Model number or brief description Billing and shipping address
Quantity Purchase Order or Credit Card

: [phone]

[phone]
Monday through Friday, 8:00 AM to 5:00 PM ET

: [e-mail]

1725 Brannum Lane
Yellow Springs, OH 45387
USA

: www.ysi.com

Service Information

YSI has authorized service centers throughout the United States and
Internationally. For the nearest service center information, please visit

www.ysi.com

directly at 800-897-4151.

When returning a product for service, include the Product Return form
with cleaning certification. The form must be completely filled out for an
YSI Service Center to accept the instrument for service. The Product
Return form may be downloaded at www.ysi.com
‘Support‘ tab.

and click ‘Support’ or contact YSI Technical Support

and clicking on the

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11

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1725 Brannum Lane
Yellow Springs, OH 45387
Tel: [phone]
Fax: [phone]
Email: [e-mail]
Web: www.ysi.com

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