Sensorex TX10 1/8 DIN Manuel utilisateur

pg.1

Operation Manual

TX10 1/8 DIN

Microcomputer Based pH/ORP Controller

11751 Markon Drive Garden Grove, CA. 92841 U.S.A.

pg.2

CONTENTS

GENERAL INTRODUCTION………………………………………..………....................3

INITIAL INSPECTION……...………………..................................................................3

USING THE Sensorex MODEL TX10………...….....................................................................3

A. Mounting procedure.....................................................................................3

B. Front panel....................................................................................................4

C. LCD screen....................................................................................................5

D. Rear connectors...........................................................................................6

E. Measure mode.............................................................................................7

F. Setting mode................................................................................................7

G. pH calibration mode...................................................................................10

H. RmV calibration mode................................................................................11

I. 4~20mA output............................................................................................11

ERROR DISPLAY AND TROUBLESHOOTING……………..……….........................13

pH BUFFERS……………..………..............................................................................15

SPECIFICATIONS……………..………………………………………........................16

WARRANTY……………..………...............................................................................17

pg.3

GENERAL INTRODUCTION

Thank you for selecting the Sensorex Model TX10. The TX10 pH/ORP transmitter is a rugged

microprocessor based instrument assembled in a watertight 1/8 DIN case, designed for use in

laboratories and process control applications.

The system displays pH or ORP or Temperature status in one large LCD screen.

The model TX10 microprocessor performs a self-diagnostic routine every time you turn on the

unit providing you with basic information on the stability of the instrument.

The model TX10 has an isolated 4-20mA analog output, offset and span configurable for the

pH or ORP display.

INITIAL INSPECTION

Carefully unpack the unit and accessories. Inspect for damages made in shipment. If any

damage is found, notify your Sensorex representative immediately. All packing materials

should be saved until satisfactory operation is confirmed.

USING THE SENSOREX TX10 pH/ORP TRANSMITTER ERVIEW

A. Mounting Procedure

1. Make a cutout on any panel, with a thickness of 1/16 inch (1.5mm) to 3/8 inch

(9.5mm). Refer to FIG 1

Figure 1

2. Remove the mounting bracket from the controller and insert the controller into the

cutout. Refer to FIG 2.

Mounting Brackets

Figure 2

pg.4

3. Replace the mounting bracket assembly onto the controller and secure the controller

to the mounting panel. Refer to FIG 3.

Panel Mounting brackets

Figure 3

B. Front Panel

The front panel consists of a 4-digit LCD display and 4 keys.

1. [ MODE ] key:

1a. In the Measure mode, this key will switch the display in sequence from pH,

Temperature, ORP absolute mV, ORP relative mV and back to pH again.

1b. In the Calibration/Setting mode, pressing this key for three seconds will move you

back to the previous parameter in the case when recalibration / resetting is required.

2. [ UP ] key:

2a. In the Calibration mode, pressing this key will show the next possible option. In the

Setting mode, pressing this key will show the next possible option and increases the

numeral increment.

2b. In the Measure mode, pressing this key and [ENTER] key at the same time, the unit

will enter the Calibration mode.

3. [ DOWN ] key:

3a. In the Calibration mode,pressing this key will show the next possible option. In the

Setting mode, pressing this key will show the next possible option and decreases the

numeral increment.

3b. In the Measure mode, pressing this key and [ENTER] key at the same time, the unit

will enter the Setting mode.

4. [ ENTER ] key: In any mode where the user can change the settings, pressing this key

will save the new settings. If no change has been made then pressing this key will just

move the user to the next setting.

pg.5

C. LCD screen

STAND SLOPE

RmV

CAL

6.86 7.00 ATC MAN

12 3 45

9876

1. Major LCD display.

2. CAL – This icon will be displayed if the meter is in the Calibration/Setting mode.

3. mA – This icon, when displayed, indicate in the 4 mA or 20mA Setting mode.

4. Ԩ– Temperature and unit display.

5. pH – Unit indicator.

6. STAND – This icon will blink before Buffer 1 calibration. The icon will stay on while

Buffer 1 is being calibrated.

7. SLOPE – This icon will blink before Buffer 2 calibration. The icon will stay on while

Buffer 2 is being calibrated.

8. 6.86 – The 6.86 buffer group: 6.86, 4.00, 9.18.

9. 7.00 – The 7.00 buffer group: 7.00, 4.01, 10.01.

10. ATC –This icon will be displayed when a temperature probe is connected.

11. MAN –This icon will be displayed when a temperature probe is not connected.

12. RmV – Unit indicator

pg.6

D. Rear connectors

100~230VAC

LNE

+V -V 10k TH Pt 1000

GND

INPUT RFF

1. Connect the AC line to the rear of the instrument. The model 3631 can be used with

100~240V AC at 50/60 HZ. Make sure the EARTH connector is connected to the earth lead

of the AC power line.

2. Set the proper load to the 4-20mA-output connector. Make sure that the load impedance

is less than 500 Ohms.

3. V+ (5VDC) and V- (5VDC) output to provide excitation voltage for pH/ORP pre-amplifier

only.

【

Note

】

(1) Make sure that the power is unplugged before wiring your probes etc.

(2) Make sure you connect the AC power cord to the correct AC terminals. Connecting

incorrectly may damage the unit permanently.

pg.7

Measure mode

Turning on the unit will always display the Measure mode. This instrument is designed to

provide 4 distinct measurements:

7.00 ATC

ATC

RmV

MODE MODE

MODE

1. pH – The degree of acidity or alkalinity of the solution.

2. Temperature – Current temperature of the solution.

3. ORP mV – A measurement of absolute ORP mV.

4. ORP RmV– A measurement of relative ORP mV. The offset value at the RmV calibration

will be added to the ORP absolute value to display the ORP relative value.

【

Note

】

ORP relative value range: ORP absolute value - 1000mV to ORP absolute value + 1000mV

Pressing [MODE] key in the Measure mode will cycle the display from the four modes above.

E. Settings mode

Pressing [DOWN] key and [ENTER] key at the same time, the meter will enter into the Setting

mode.

1. Temperature compensation select:

+ENTER

ENTER ENTER ENTER

pH buffer 1 select

CAL

ATC

CAL

ATC

CAL

MAN

Pressing [UP] key or [DOWN] key in this screen will cycle the display from 01 (Thermistor:

10k ohm), 02 (Resistor: PT1000), 03 (Manual) modes above.

Select the preferred temperature compensation mode, press [ENTER] key to save, and

enter the next setting screen.

pg.8

2. pH buffer 1 select:

Pressing [UP] key or [DOWN] key in this screen will cycle the display from 7.00, 6.86 buffer

above.

Select the preferred buffer, press [ENTER] key to save, and enter the next setting screen.

Temperature compensation select

pH buffer 2 select

ENTER

ENTER ENTER

CAL

6.86

CAL

7.00

Buffer 1 7.00

Relay control parameters select

ENTER

CAL

7.00

CAL

7.00

ENTER ENTER

Buffer 2 6.86

Relay control parameters select

ENTER

ENTER ENTER

CAL

6.86

CAL

6.86

Pressing [UP] key or [DOWN] key in this screen will cycle the display from 4.01, 10.01 (or

4.00, 9.18) buffer above.

Select the preferred buffer, press [ENTER] key to save, and enter the next setting screen.

【

Note

】

: The pH buffer 2 is either 4.01 or 10.01 if select 7.00 buffer at pH buffer 1 select

screen. The pH buffer 2 is either 4.00 or 9.18 if select 6.86 buffer at pH buffer 1 select

screen.

pg.9

3. 4 mA output setting:

mA output parameters select

20mA output setting

ENTER

CAL CAL

Pressing [UP] key or [DOWN] key in this screen to adjust the 4 mA value, this value is used

for scaling the 4-20mA analog output.

Pressing [ENTER] key to save, and enter the next setting screen.

4. 20mA output setting:

4mA output setting

Measure mode

ENTER

CAL CAL

Pressing [UP] key or [DOWN] key in this screen to adjust the 20 mA value, this value is

used for scaling the 4-20mA analog output.

pg.10

E. pH Calibration mode

The TX10 uses 2-point calibration for pH. The first point must be 6.86/7.00, and the second

point can either be 4.00/4.01 or 9.18/ 10.01.

In the pH Measure mode, pressing [UP] key and [ENTER] key at the same time to allow the

meter to go to the pH Calibration mode.

1. Buffer 1 (STAND) calibration:

Buffer 2 calibration

+ENTER ENTER

STAND

CAL

7.00

STAND SLOPE 7.00

HI2

STAND

CAL

7.00

Enter into the pH calibration mode, the “STAND” icon will flash, the unit is ready to be

standardized at the first buffer. Rinse the pH and ATC/Temp probes in distilled water and

immerse them in the first buffer solution (either 7.00 or 6.86). Allow temperature reading

to stabilize, then press “ENTER” key to calibrate. The “pH” icon will flash until the unit

detects a stable reading. Once the unit calibrates the first point, the “SLOPE” icon will

flash. The unit is ready to be sloped at the second buffer.

2. Buffer 2 (SLOPE) calibration:

Rinse the pH and ATC/Temp probe in distilled water and immerse them in the second

buffer solution (either 4.00/4.01 or 9.18/10.01). Allow temperature reading to stabilize,

then press “ENTER” key to calibrate. The “pH” icon will flash until the unit detects a stable

reading. Once the unit calibrates the second point and the unit will automatically exit the

calibration mode and goes to the pH Measure mode. Dual point calibration is complete.

ENTER

Buffer 1 calibration

Measure mode

STAND SLOPE

CAL

7.00

STAND SLOPE

CAL

7.00

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