LABEC M-TIT-5 User Manual

INSTRUCTION MANUAL

Laboratory Equipment Pty Ltd
email: [e-mail]
Ph: 02 9560 2 811 • Fax: [phone]

www.labec.com.au

2014

Operation Manual for

TIT-5

Automatic Potential Titrator

PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION

ADVICE:

 Read this instruction in detail before operating the meter.
 The meter should be re-tested by metrological department when it is used over one year. And

the meter can't be used until it is up to standard.

 The warranty of quality for all electrode is one year. The electrode should be changed in time

after warranty no matter whether it is used, since the performance of it will be influenced.

2

CONTENT

I. General
II. Main Specifications and Performance
III. Construction of the meter
IV. Operation

1. Installation of the meter

2. Functions of the meter

3. Mode of titration

4. Switching on the meter

5. Feeding solution

6. Cleaning

7. Titration

7.1 Pre-titration

7.2 Preset end point titration

7.3 Mode titration

7.4 Blank titration

7.5 Manual titration

8. Settlement of titration data

8.1 Present data settlement

8.1.1 Store titration data

8.1.2 Mode of production

8.1.3 Concentration of sample

8.1.4 End point set or amendment

8.1.5 Print

8.1.6 About

8.2 View and print stored data

9. Mode

10. Setting up of parameter

10.1 Setting stirring speed

10.2 Setting time

10.3 Setting printer

10.4 Setting burette

11. Calibration of electrode

12. PH measurement

13. Calibration of burette coefficient
V. Maintenance and Service of the Meter
VI. The Complete Sets of the Meter
VII. Appendix

3

I. GENERAL

Model TIT-5 Automatic Potential Titrator is a high precision laboratory analyzer, which is

mainly used in chemical analysis of college, scientific research departments, petroleum chemical

industry, pharmacy, medicine inspection and metallurgy.

FEATURES OF THE METER:

 With panel technology: Control unit, volume titration unit and pH/mV measuring unit can form

Potential Titrator; Control unit, volume titration unit and dead-stop titration measurement unit

can form dead-stop titrator; Control unit, volume titration unit and conductivity measurement

unit can form conductivity titrator. User can also change volume titration unit to coulomb

titration unit to form coulomb titrator. The control unit is PC instead of the meter.

 With touch LCD, titrating curve chart, one step derivative and graphing contrast analysis are

instantly displayed on the meter. Titration mode can be compiled and amended.

 With comfortable operating interface, with English display, menu, graph, quick key etc.

operating method. The meter has the function of protection from electricity cutting off. The

stored data and parameter will be kept even if unusual electricity cutting off happens.

 Different electrodes are fitted with the meter to make pH measurement, acid and alkali titration,

oxidation-reduction titration, complex titration and non-water titration. The meter can generate

special titration modes with the functions of pre-titration, preset end point titration, blank

titration and manual titration. The operation range of the meter becomes larger.

 With PWM technology, the software adjusts speed in stirring system. Applying the material of

perchloric acid-proof, the titration system can make non-water titration.

 The meter can be connected with (Model TP-16, TP-24 or TP-40) serial printers to print

measuring data, titration curve and calculating results.

 The meter controlled by computer is able to instantly display titration curve chart, one step and

two steps derivative and graphing contrast analysis. Titration mode can be compiled and

amended. The results of the measurement can also be counted up.

II. MAIN SPECIFICATIONS AND PERFORMANCE

1. Measuring range: pH: (0.00~14.00)pH;

mV: (-1999.0~1999.0)mV;

temperature: (-5.0~105.0)℃;

2. Resolution: pH: 0.01pH;

mV: 0.1mV;

temperature: 0.1℃.

3. Electronic unit accuracy: pH: ±0.01pH ±1 bit

mV: ±0.03% (FS)

temperature: ±0.3℃

sensitivity of controlling titration: ±2mV

4. Burette volume accuracy: 10ml burette: ±0.025 ml;

20ml burette: ±0.035ml.

5. Dripping or feeding rate of burette: 55±10s (burette FS)

4

6. Repeatability of titration analysis: 0.2%

7. Electronic unit repeatability: ≤0.2mV

8. Electronic unit stability: ±0.3mV ±1 bit/3h

9. Normal operating conditions:

ambient temperature: (5.0~35.0) ℃

relative humidity: ≤80%

power supply: (220±22)V, frequency: (50±1)Hz;

Without disturbing by electron magnetic field except terrestrial magnetic field.

10. Outside dimensions (mm): 360×300×300 (l×w×h)

11. Weight (kg): about 10.

III. CONSTRUCTION

1. Front panel of the meter

Diag.1

(1) Solution bottle (2) feeding tube (3) volume titration unit (4) burette (5) joint nut

(6) feeding tube (7) turning valve (8) feeding tube (9)dripping tube

(10) electrode pole (11) screw (12) beaker supporter (13) beaker

(14) stirring drop (15) stirrer (16) potential measuring unit (17) control unit

As shown in diag.1, three parts constitute the meter: control unit (17), volume titration unit (3) and

potential measuring unit (16). Computer (must be installed TIT-5 automatic titrator control software)

can be replace control unit to control titration.

5

2.Rear panel of the meter

a. Rear panel of control unit b. Rear panel of volume unit

Diag.2 Diag.3

(18) titration socket (19) measuring socket (20) printing socket

(21) titration socket/RS232 (22) stirrer socket (23) indicating light

(24) fuse socket (25) power socket (26) switch

c. Rear panel of potential measuring unit

Diag.4

(27) measuring electrode socket (28) temperature sensor socket (29) reference electrode pole

(30) grounding socket (31) indicating light

(32) measuring socket/RS232: connect control unit ‘titration socket (18) to volume unit ‘titration

socket/RS232’ (21); connect control unit ‘measuring socket’ (19) to potential measuring unit

‘measuring socket/RS232’ (32).

6

3.Fittings of the meter

(33)Control unit →volume titration unit special

connecting li

ne.

Diag.5

(34) Control unit potential measuring unit special

connecting line

Diag.6

(35) Computer →

TIT-5 automatic titrator

special connecting line

Diag.7

7

Diag.8

Diag.9

Diag.10

(36)

(40) T

TP-40 printer sp

ecial connecting line

(37) E-201-C-9 pH com

(38) Electrode sleeve

(39) Q9 short circuit plug

-818-B-6 tem

perature sensor

bination electrode

8

(41) Universal power line

Diag.11

(42) Top sealing cap

(43) Small nut

(44) Protecting cover

(45) Top sealing ring

(46) Burette

(47) Piston

(48) Bottom sealing ring

(49) Bottom sealing cap

(50) Big nut

(51) Piston pole

(52) Spring washer (3 pieces)

(53) Screw M3×8 (3 pieces)

Diag.12

9

IV. OPERATION

1. Installation and Connection

1.1 Installation of the meter

Diag.13

a. Put volume titration unit(3) and control unit on table, put stirrer on potential measuring unit(16)

according to mentioned Diag13 and insert electrode pole(10); install beaker supporter (12) and

beaker(13) respectively, put stirring drop(14) into beaker(13), then tighten stirrer(15) and

beaker(13) with screws(25).

Diag14

b. Before titration, burette must be cleaned especially when you are going to do titration of different

concentrations or different solutions. Installation of burette (4) is shown on left side as diag14,

take out push rod tool from spare parts, connect it to the piston pole (51), shown as below

10

diagram14, then according to diagram 14, firstly take off 3 pieces of screws (M3×8) (53), 3

pieces of spring washers (52), then take off bottom sealing cap (49), bottom sealing cap (48),

burette (46) and piston (47) respectively, clean the burette with distilled water repeatedly, then

absorb water drops on the burette (46) with distilled paper.

Install burette according to diagram 14, firstly install the piston (47) into burette from the top with

push rod tool, then install the burette (46) and piston (47) into protection cover (44), the top of

burette (46) should be tightly closed to the top sealing ring (45) but please be careful not to break

the burette (46), then install the bottom sealing ring (48) and the bottom sealing cap (49) properly.

At last, tighten the burette with 3 pcs of M3×8 screws (53) , 3 pcs of spring washers(52). Please

note that when tighten with screws (53), you must tighten it evenly to prevent burette from

leaking probably that may influence titration accuracy. Pull the piston (47) to the lowest point

with push rod (see diagram 14)

Diag.15

c.Install the burette (4) on volume titration unit (3), please note: the piston pole on the burette

should be inserted into the groove of the push rod, then tighten the screws (50) on the burette

(4); insert dripping tube (9) according to diagram 15; then connect the feeding tube (2) (the

longest one), the feeding tube (6) (the shortest one), feeding tube (8) by tightening joint nut (4).

Note: Turn the joint nut (4) tightly to prevent from leaking.

11

Diag.16

d. Insert T-818-B-6 temperature sensor (40), take off sleeve (38) on E-201-C-9 combination

electrode (37), then insert E-201-C-9 combination electrode (37), put feeding tube (2) into the

bottom of solution bottle (1) all according to diagram 16.

Diag.17

e. While the meter is doing titration, if you need to change solution, the beaker should be taken

apart and assembled. Shown as diagram 17, loosen the screws (11) first, raise the whole

beaker system higher and turn to the position according to diagram 17, then turn the screws

(11) tight, hold the beaker (13) with hand, loosen the big nut (55), take out beaker (13), pour

solution out of the beaker (13), wash it for several times. Take notice: stirring drop (14)

must be cleaned as well. Fill the beaker (13) with measured solution. Take notice: stirring
drop (14) must be put at the bottom of the beaker (13). Install the beaker (13) to the

position, tighten the big nut (55) and loosen the screws (11), move the beaker system down

to make the beaker (13) touch the surface of the stirrer (15). The beaker should be put in the

middle of the stirrer (15). Finally turn screws (11) tight.

12

1.2 Connection of the meter

Diag.18 Rear panel of volume titration unit

.19

Diag

Diag.19 Rear panel of potential measurement unit Diag.20 Rear panel of control unit

a. Use control unit → volume titration unit special connecting line(33) to connect ‘titration

socket’ (18) under control unit and ‘Titration Socket/RS232’ (21) under volume titration unit.

b. Insert the joint of Stirrer (15) in the socket of ‘Stirrer’ under volume titration unit. Use TP-40

printer special connecting line to connect printer to ‘Printing Socket’ (20) under control unit.

Inset universal power line (41) into power socket of control unit. Screw down the fuse cover

off the fuse socket, put the fuseΦ5×20 (1A) from spare parts in the fuse socket, then tighten

the screw of the cover (fuse is already put in when the meter is ex-factory).

c. Use control unit → potential measuring unit special connecting line (34) to connect

‘Measuring Socket’ (19) under control unit with ‘Measuring Socket/RS232’ under potential

measuring unit.

13

d. If the meter links up with computer, use computer → TIT-5 Automatic potential Titrator

special connection line (35) to connect hole style socket with RS232 socket on computer.

Separately connect the needle style socket to ‘Titration Socket/RS232’ (21) under volume

titration unit and ‘Measuring socket/Rs232’ (32) under potential measuring unit.

e. Insert T-818-B-6 temperature sensor (40) joint into ‘Temperature Sensor socket’ (28) under

pH/mV measuring unit. Insert E-201-C-9 pH combination electrode (37) into ‘measuring

electrode socket’ (27) under potential measuring unit. When measuring electrode and

reference electrode is used, please insert measuring electrode into ‘Measuring electrode

socket’ (27) under potential measuring unit and insert reference electrode into ‘reference

electrode pole’ (29) under potential measuring unit. Now the meter is ready to use.

2. Functions of the meter

The main titration modes of the meter contain pre-titration, preset end point titration, mode

titration and manual titration. Different electrodes can be fitted with the meter to make different

titration, such as: acid and alkali titration, oxidation-reduction titration, complex titration,

non-water titration and permanent pH measuring etc. The above titrations are generated into

special titration modes. The meter can be controlled by computer. Titration curve, titration curves

of one step and two steps derivative are instantly displayed on computer.

3. Mode of Titration

 Pre-titration: pre-titration is one of the main titration modes of the meter, many modes titration

are generated from pre-titration mode. The meter is able to find titration end point through

pre-titration mode, thus special titration mode is generated.

NOTE: The end point jump parameter of pre-titration mode is classified into: large, middle,

small, the default value of this parameter is set "middle". If it has reaction to low end point

jump, the users must set this parameter to "small" (see 6.7 setup of pre-titration parameter in

detail.)

 Preset end point titration: If users know the titration end point value of pH or potential, preset

end point titration function is available. Input end point number, end point pH or potential

value and pre-controlled point value (pre-controlled point is transferring point from high speed

titration to low speed titration), you can begin titration.

 Mode titration: The meter provides two kinds of special mode titration.

a. HCl NaON (0.1 mol/L)

The rest mode titration is to be

b. K2Cr2O7 Fe2 (0.1 mol/L)

generated with pre-titration by users. Users will get titration

parameter after pre-titration, press "Mode" button, store this parameter in the meter, special

titration mode is thus generated. Titration can be done later only if this mode is down loaded

(see 8.12 "Generation of mode" for detail)

 Manual Titration: Set added volume to make manual titration. This titration mode will help

users find titration end point.

 Blank Titration: This mode is suitable for the titration which demands less titrant (below 1m1).

In this mode, every time the meter adds 0.02 ml of volume (users can amend this parameter),

users can also set pre-added volume parameter so as to make titration speed higher. Thus the

meter will automatically search for titration end point to generate special titration mode

14