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SHANGHAI BOQU INSTRUMENT COMPANY

WWW.BOQUINSTRUMENT.COM

- 8 -

■ 4-20mA(I-): 4-20mA Output -

■ AC220V(L): AC220V Zero wire

■ AC220V(N): AC220V Fire wire

■ HC: High limit normally close

■ HO: High limit normally open

■ LC: Low limit normally close

■ LO: Low limit normally open

■ COM: Relay common port

Notice:

To prevent electric shock, make sure that the meter is not energized before connecting the

signal cable.

To prevent fire, use a double insulated wire.

Do not place the live product near the signal terminals, which may cause malfunction.

Содержание pHG-2091

Страница 1: ...WW BOQUINSTRUMENT COM pHG 2091 Online pH ORP Meter User manual SHANGHAI BOQU INSTRUMENT CO LTD Address No 118 Xiuyan Road Pudong New Area Shanghai zip code 201315 China www boquinstrument com email michael shboqu com mob 86 15000087545 ...

Страница 2: ...lation 6 2 2 Electrode installation 7 2 3 Meter wiring 7 Chapter 3 Button operation 9 Chapter 4 Meter display and operation 9 Chapter 5 Settings 11 5 1 System Setting 11 5 2 Signal Setting 12 5 3 Online Calibration 12 5 4 Remote Setting 13 5 5 Alarm Setting 13 5 6 Information Inquiry 13 Chapter 6 Communication protocol 14 Chapter 7 Product maintenance 14 Chapter 8 Trouble analysis and recovery met...

Страница 3: ...sult in damage to the instrument or personal injury The company promises to the user the instrument should be provided when the supply of hardware accessories in the material and manufacturing processes are not any flaws From the date of purchase of the instrument from the date of calculation in the warranty period if the user received a notice on such defects the company is indeed defective produ...

Страница 4: ...he emergency stop circuit and protection circuit Make sure that the supply voltage is consistent with the rated voltage before running In order to prevent electric shock misuse display is not normal or measurement of a larger error be sure to carry out a good grounding protection Must be mine construction facilities common grounding grid equipotential grounding shielding reasonable wiring the appr...

Страница 5: ...ormal action shortened life and fire Please follow the instructions in this manual otherwise it may damage the instrument protection device Warning If you find out if the instrument is damaged or deformed please do not use it Install to avoid dust thread iron or other substances into the instrument otherwise it will occur abnormal action or failure During operation if you want to modify the config...

Страница 6: ...electrode should be installed in the ORP mode In order to make the measurement more accurate the glass electrode shelf life of one year the factory a year later regardless of whether the use of its performance will be affected should be replaced The first use of the PH electrode or long term no use of the PH electrode must be sink into 3mol L of KCL for 24 hours Preheat the instrument for about ha...

Страница 7: ...he computer to achieve monitoring and recording 1 1 Features Board modular design assembly configuration more convenient Using 2 4 inch 12864 dot matrix screen Use isolated output less interference Isolated RS485 communication Can be PH ORP measurement temperature measurement high and lower limit control transmission output RS485 communication Configurable temperature manual automatic compensation...

Страница 8: ...te in loop control if the instrumentation the instrument is used to control the instrument The failure may lead to major accidents or damage to other equipment the need to set the emergency stop circuit and protection circuit complement otherwise the consequences the company is not responsible This instrument is disk mounted Please install indoors avoid wind and rain and direct sunlight In order t...

Страница 9: ...ng hole on the instrument cabinet or mounting panel to insert the instrument into the mounting hole fixing screw 2 2 Electrode Installation Common installation diagram 2 3 Meter wiring Terminal definition INPUT Electrode measurement terminal REF Sensor reference NC None TEMP2 Temperature compensation 2 TEMP1 Temperature compensation 1 RS485 A RS485 Communication protocol A RS485 B RS485Communicati...

Страница 10: ...ally close HO High limit normally open LC Low limit normally close LO Low limit normally open COM Relay common port Notice To prevent electric shock make sure that the meter is not energized before connecting the signal cable To prevent fire use a double insulated wire Do not place the live product near the signal terminals which may cause malfunction ...

Страница 11: ...ation jump over the calibration process Right shift Cycle select the number of parameters Next Main menu to select relevant menu Set the state to modify the relevant value Enter Main menu enter into sub menu or confirm the modify Chapter 4 Meter display and operation Monitoring interface The instrument is equipped with monochrome dot matrix LCD display with a resolution of 128 64 Use the Menu to e...

Страница 12: ...gs information Monitoring interface of pH value Monitoring interface of ORP value Password verification screen After entering the password use ENT to enter the main menu screen Initial password is 0000 you can use the password modification function to change the password If you forget your password please contact us Password 0000 ...

Страница 13: ...libration and correction of PH and ORP signals Remote Setting RS485 and current transmission output parameter settings Alarm Settings high alarm and low alarm parameter settings Information Inquiry current version number Chapter 5 Settings 5 1 System setting System setting 1 Language 2 Buzzer 3 Backlight 4 Password Modify 5 Factory Setting Language Chinese and English switch Buzzer Sets the buzzer...

Страница 14: ...ress the ENT Then put the PH electrode into 6 86PH standard solution standing for a moment after the value stable press the ENT Finally put the PH electrode into 9 18PH standard solution standing for a moment after the test is stable press the ENT indicating that the calibration is successful The PH calibration process finished PH correction The measured PH value can be corrected between 2 PH valu...

Страница 15: ... high alarm relay disconnect PH Low Alarm when the measured value is higher than the low value set the lower alarm relay pull when the measured value is lower than the low value set the low alarm relay off ORP High Alarm when the measured value is higher than the high value set the high alarm relay pull when the measured value is lower than the high value set the high reported relay disconnect ORP...

Страница 16: ...he PH value of 686 hexadecimal high byte AE for the return of the value of 686 hex low byte 05 58 is the CRC check value Chapter 7 Product maintenance 1 pH glass electrode storage short term stored in the pH 4 buffer solution long term stored in the pH7 buffer solution 2 pH glass electrode cleaning glass electrode bulb contamination may make the electrode response time longer CCl4 or soap can be u...

Страница 17: ... by blockage the following methods can be resolved 1 Soaking fluid interface 10 saturated potassium chloride solution and 90 distilled water mixture heated to 60 70 the electrode immersed in about 5cm soak for 20 minutes to 1 hour This method dissolves the crystallization of the electrode tip 2 Ammonia Soaking When the liquid interface is blocked by silver chloride can be leaching with concentrate...

Страница 18: ...ference equipment or do shielding measures 3 PH instrument can not be calibrated A The standard solution is not properly formulated or the electrode is damaged 4 After calibrated by standard solution PH4 00 PH6 86 PH9 18 the test is not test A The standard solution may polluted replace the standard liquid and re calibration 5 The measurement value is slow response A The electrode bulb is covered w...

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