Suntex SC-110 Operation Manual

5

Portable

Conductivity/

Resistivity Meter SC-110

Operation Manual

i

Content Table

1. Specifications 1

2. Configuration

2.1 Display 2

2.2 Socket 2

2.3 Keypad 3

3. Operation

3.1 Measurement 4

3.2 Measurement function and file bit shift 4

3.3 Temperature function and compensation 5

3.4 Auto Read 5

4. Settings

Block diagram of settings 6

4.1 Parameter settings 7

4.1.1 Entry of set-up mode 7

4.1.2 Settings of measurement mode 7

4.1.3 Settings of data deletion 7

4.1.4 Settings of baud rate (BAUD) 8

4.1.5 Settings of system time 9

4.2 Deletion of all stored data 10

4.3 System reset 10

Block diagram of calibration and temperature compensation settings 11

4.4 Settings of calibration parameter 12

4.4.1 Electrode coefficient and calibration parameter 12

4.4.2 Standard solution calibration parameter 13

4.4.3 Temperature compensation coefficient 13 Block diagram of operations in measurement mode 14

4.5 Auto/manual data storage 15

4.5.1 Auto storage 15

4.5.2 Manual storage 15

4.5.3 Data full 15

4.6 Data readout and output 16

4.6.1 Auto transmission 16

4.6.2 Manual readout and transmission 16

5. Calibration

Block diagram of Calibration 20

5.1 Standard solution preparation 21

ii

5.2 Calibration mode 21

5.3 Entry of calibration mode 21

5.3.1 Electrode coefficient calibration 21

5.3.2 Standard solution single-point calibration 21

5.3.3 Standard solution five-point calibration 22

6. Instruction set for RS232 23

7. Alternative fittings 23

8. Failure recovery 24

9. Maintenance 25

1

1. Specifications Mode SC-110

Function

µS/mS/MΩ/Salinity/TDS/Temp.

Cond.

0.00 uS/cm ~ 200.0 mS/cm in 5 measuring ranges for manual or auto switch

Res.

0.00~100.00 MΩ- cm

Salt

0.0~70.0ppt

TDS

0~2000ppm

Range

TEMP

-10.0~110.0°C

Cond.

0.01µS/cm

Res.

0.01 MΩ-cm

Salt

0.1 ppt

TDS

1 ppm

Resolution

TEMP

0.1°C

Cond.

±0.5%(±1Digit)

Res.

±1%(±1Digit)

Salt.

±0.5%(±1Digit)

TDS

±0.5%(±1Digit)

Accuracy

Temp.

±0.2°C(±1Digit)

PT-1000 or NTC 30K auto recognition

Temperature

Compensation

Auto / Manual selectable

Temperature

Coefficient

Non-linear / 0.00 ~ 10.00 % Linear

Ref. Temperature

T

ref

25℃

Manual calibration

Single point known standard solution or electrode constant calibration

Standard solution

calibration

Single or up to 5-point known standard solution calibration; default five

standard solution 10/84/1413 uS/cm & 12.88/100 mS/cm adjustable

RS232 interface

YES

Output Data logging

450 sets (measuring value, temp., date, time & ID)

Ambient

temperature

0~50°C

Storage

Temperature

-20~70°C

Display

1/2” LCD

Power

4 x AA battery

Battery

Around 350 — 1000 hrs according to measuring range; auto shut-off within10

minutes of no use

Protection Type

IP65

Certified to

CE

Dimension

(L x W x H)

185 x 98 x 38mm

Weight

0.35Kg

2

2. Configuration

2.1 Display:

2.2 Socket:

Set-up mode

Measurement mode

Measurement unit

Auto temperature

compensation

Time reminder

Auto read

Calibration mode

Data storage mode

Low battery

reminder

Data read

/Transmission mode

Data Storage ID

number

Storage ID

Transmission

speed

Conductivity

electrode socket

RS232 interface socket

3

: Power switch. Push it to power on and push it again to power off. Auto shut-off within10 minutes of no use

: Cond./Res./Salt/TDS measurement shift key; pushing it at any time will allow

backing to the measurement mode.

: Enter calibration mode.

: Key for auto read in measurement mode. Push one time for startup and push again for cancellation.

: Upward or leftward key. For value adjustment, push it to increase the speed.

: Downward or rightward key. For value adjustment, push it to decrease the speed.

: (ENTER) Input, confirm, execute, and RS-232 manual output

: (Recall) Manual data read startup key and value read selection key.

: (Store) Manual data storage startup key

: Enter system parameter set-up, see 4.1

: Delete all stored data, see 4.2

: System reset, see 4.3

: Shift among the five manual modes and the auto mode. See 3.1

: Enter calibration parameter settings. See 4.4

: Enter auto continual storage settings. See 4.5

: Enter auto continual transmission settings. See 4.6

2.3 Keypad：

+

4

3. Operation

3.1 Measurement:

Push key to start up the instrument. It will automatically enter the measurement mode

of final operation and begin to measure.

3.2 Measurement function and file bit shift:

1. Push key to shift among Cond., Salt, and TDS in Cond. Mode. This function is

unavailable in Res. mode.

2. Push + keys to shift among the five manual shifts and the auto shift. After

entering auto mode, AUTO characters will disappear after 3 seconds.

Remark: Before measuring salt and TDS, please finish the calibration according to the conductivity calibration steps, and then set the factor value according to the standard solution of salt and TDS.

Push to shift Salt unit

Push to shift

TDS unit

Push to adjust

the salt value. Note:

Factor range is 0.4~1.5

Push to adjust

Total Dissolved

Solids. Note: Factor

range is 0.4~1.5

Push +

Push

Push +

5

3.3 Temperature function and compensation:

1. ATC: Auto judgment of whether there is temperature probe and recognition of NTC30K

or PT1000. Push or to adjust the temperature within in ±5℃. At the same time,

push keys to back to the original value.

2. MTC: Enter MTC 25℃ automatically when there is no temperature probe. Push

or to adjust the temperature. At the same time, push keys to back to the

default value 25.0℃.

3. Temperature compensation: Because the temperature of the to-be-tested solution may not

be 25℃, for standardization, the conductivity value of solution not at the temperature of 25℃ will be calculated to that of solution at the temperature of 25℃. This is temperature

compensation.

4. According to the temperature coefficient required by the measurement, three kinds of

temperature compensation can be applied: Lin, nLin, and non compensation (0.00％). See

the setting method in 4.4.3, and the user can set as needed.

5. Temp. Coefficient (called as TC for short), the conductivity value of the solution will

increase as the temperature rises at a different rate. See the relations as follows:

C25

Conductivity at 25℃

Ct

Conductivity at T℃

Formula 1: Ct = C25 { 1+β( T – 25 ) }

T Temp. of the tested solution β Temp. Coefficient

Formula 2: β = ( Ct－C

25

) / { C

25

( T－25 )}

6. How to measure the TC of the tested solution: If the user wants to get a more accurate

value, the above formula can be applied to measure the TC of the tested solution and set an appropriate TC on the machine. Take 0.01N Kcl as an instance, set the TC as non compensation (0.00%) in the machine. Control the same tested solution respectively at

5℃ and 20℃. The value 1413μS tested at C25 is just the conductivity of the solution at 25℃; and the value 1278μS tested at Ct is just the conductivity of the solution at 20℃. According to formula 2, β＝1.91%.

3.4 Auto Read:

In the measurement mode, push to start up and push to read. Then, push

Enter to make the next measurement. Push or at any time will allow backing to

the measurement mode.

Auto Read symbol twinkles

for about 10 seconds.

Auto Read symbol stop twinkling

and a value will appear after the

measurement is stable.

Back to the measurement

Push or

6

4. Settings Block diagram of settings

↓: Enter key

→: Downward key for right

←: Upward key for left

Data overcast settings

Baud rate settings

Push or to select auto overcast or cancel overcast

Push or to select other transmission speed: 1200, 2400, 4800 or 9600

Push Store+Powe

r

,

Loose Power+Store

To delete all stored data

Push CAL+Power, Loose Power+CAL

System reset

Push Mode+Power Loose Power+MODE to enter the measurement mode

Settings of measurement

Power off

System time settings

Push or to modify the minute

Push or to modify the year

Push or to modify the month

Push or to modify the day

Push or to modify the

Push or to select conductivity or specific resistivity

Suntex SC-110 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual