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JENCO 6219, Operation Manual

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20 

RETURN OF ITEMS 

   
Authorization must be obtained from one of our representatives before 
returning items for any reason. When applying for authorization, please 
have the model and serial number handy, including data regarding the 
reason for return. For your protection, items must be carefully packed to 
prevent damage in shipment and insured against possible damage or loss. 
Jenco will not be responsible for damage resulting from careless or 
insufficient packing. A fee will be charged on all unauthorized returns. 
 

NOTE:

 Jenco Instruments, Inc reserves the right to make improvements in 

design, construction, and appearance of our products without notice. 
 
 
 
 
 

JENCO INSTRUMENTS, INC.

 

7968 Arjons Drive, Suite C 
San Diego, CA 92126 USA 
TEL:001-858-5782828  FAX:001- 858-5782886  
E-MAIL: 

[email protected]

 

Homepage:http://www.jencoi.com 
 

JENCO ELECTRONICS, LTD.

 

PO. BOX LINKOU 117 
TAIPEI, TAIWAN 
TEL: (886-2)2601-6191   FAX: (886-2)2601-7206  
E-MAIL: [email protected] 
 

SHANGHAI JENCO ELECTRONICS, LTD. 

18 Wang Dong Zhong Road 

Sijing Town,Songjiang 

SHANGHAI,CHINA

 

TEL: (86-021)5761-9599  FAX: (86-021)5761-9598 

E-MAIL: 

[email protected]

 

Homepage:http://www.jenco.com.cn 

Summary of Contents for 6219

Page 1: ...OPERATION MANUAL MODEL 6250 6219 SERIES MICRO COMPUTER BASED PH mV ION TEMP METER JENCOELECTRONICS LTD MANUFACTURER OF PRECISION INSTRUMENTS ...

Page 2: ... touch keys with audio feedback buffer recognition electrode slope recognition ATC Automatic Temperature Compensation capabilities temperature measurement to 0 1 degree C visual and audio operational error indications simplicity of operations large LCD display can display pH mV ion and temperature values of the sample simultaneously etc make the 6219 and 6250 ideal USER FRIENDLY instruments for fi...

Page 3: ... you must replace the new batteries when OFF is display ie automatic turn OFF to prevent incorrect measurements 2 AOpen battery compartment by pushing closure up This is most easily open by using a coin such as a penny and inserting it into the slot on the side of the meter model 6250 2 B Open battery compartment by pushing closure up and lift the battery cover to expose the battery compartment mo...

Page 4: ...3 Figure 1 Battery Compartment ...

Page 5: ...4 ...

Page 6: ...5 ...

Page 7: ...6 ...

Page 8: ...19 8 conc ION Accuracy 2 LSD Resolution 0 05 conc range 0 00 to 25 00 conc 0 1 conc range 25 00 to 50 0 conc 0 2 conc range 50 0 to 119 8 conc Operating temperature 0 to 50 Power supply Six AAA batteries Six AA batteries 9V AC adaptor 9V AC adaptor Display pH mV ion 15mm high LCD 12 7mm high LCD TEMP 8 7mm high LCD 12 7mm high LCD Battery life 25 Hours 50 HOurs Dimensions W D H 83mm 241mm 72mm 250...

Page 9: ... the instrument in pH or mV mode But not for ion mode 6 CLEAR key The CLEAR key is used to reset the instruments mode and clear the pH ion calibration values The CLEAR key has a delayed reaction of 2 seconds before responding to protect from accidential key presses However When the instrument display an error the CLEAR key is pressed all the LCD segments and annuciators will be on for a 2 3 second...

Page 10: ...probe 1 1 Connect the pH electrode and the ATC Temp to the connectors of the instrument Refer to the Figure 2 The ATC annicator model 6250 green color ATC LED lamp model 6219 will be on Press the MODE key to enter into pH mode the pH anniciator model 6250 or pH LED lamp model6219 will on and the STAND anniciator model 6250 or green color STAND LED model 6219 will flash 1 2 Rinse the pH electrode a...

Page 11: ...uffer 7 00pH or buffer 6 86pH rinse with distilled water and immerse in buffer 4 01pH 10 01pH model 6250 model 6219 or buffer 4 00pH 9 18pH model 6250C model 6219C The instrument will display the temperature of the second buffer 1 5 Allow sufficient time for the pH electrode and ATC Temp probe to stabilize Press the SLOPE STAND II key The SLOPE indication will stop flashing and stay on The instrum...

Page 12: ...ciator model 6250 or green color STAND LED lamp Model 6219 will start flash Per Figure 3 2 2 Rinse the pH electrode in distilled water and immerse in buffer 7 00 model 6250 model 6219 or 6 86 model 6250C model 6219C Set the instrument to display the temperature of the buffer 7 00 or 6 86 by pressing the UP or DOWN key 2 3 Pressing the UP key will increase the temperature and the DOWN key will decr...

Page 13: ...o the temperature of the second buffer as set in 2 5 Refer to Table 1 If the reading still drifts repeat 2 6 until a stable reading is obtained The micro computer inside the instrument will calculate and compensate for the pH electrode slope deviation corresponding to the values of the two calibration buffer The instrument is dual point calibrated and is ready for measurements If Er2 is displayed ...

Page 14: ...e pH value measured is out of the 2 000 to 16 000 pH range 2 Measurement with manual temperature compensation in the pH mode 2 1 Connect the pH electrode to the connector of the instrument Refer to Figure 2 2 2 Press the MODE key enter into pH mode the pH STAND SLOPE indicators is on and the MANUAL anniciator model 6250 or red color LED lamp model 6219 are on Per Figure 3 2 3 Rinse the pH electrod...

Page 15: ...urement range 5 0 to 125 0 degree C Once the temperature brought within range Er3 will disappear and the correct temperature reading will be displayed It is not necessary to press the CLEAR key Er4 will be displayed if the temperature is out of the temperatue range 0 to 50 0 degree C Please press MODE key to enter into mV or Ion mode for the other measurements mV MEASUREMENTS A combination electro...

Page 16: ...es used to handle ion standards and samples should always be cleaned with deioned water Rule B THe standard solutions and samples should always be at the same temperature Rule C A magnetic stirrer should be used for all measurements of standards and samples Rule D Study the instruction manual of the ION sensor carefully to make sure that the proper ionic strength adjuster and or pH adjuster is use...

Page 17: ...120 0 conc Er2 will be display if the STAND II key is pressed before the STAND I key 1 6 For dual point standardization remove the electrodes from the dilute standard rinse with the concentrate standard or de ionized water and immerse the electrodes in the concentrate standard 2 1 7 Press the STAND II key the anniciator 2 model 6250 or STAND II LED model 6219 lamp will on The STAND II key can be p...

Page 18: ... 35 4 020 6 842 6 979 9 107 9 928 40 4 030 6 836 6 973 9 074 9 891 45 4 042 6 832 6 969 9 044 9 859 50 4 055 6 831 6 968 9 017 9 831 The actual reading of the instrument can differ from the values shown by 1 digit TABLE 1 The value in TABLE 1 is stored in the memory of the microcomputer Since the buffer values stored is the value of the buffers at 0 5 10 15 20 25 30 35 40 45 and 50 degree C It is ...

Page 19: ...ograms for each computer language and amore detailed explanation of the software driver are included in the accompanying disk PREPARING THE METER FOR OPERATIONS VIA THE RS 232C INTERFACE The Meter comes equipped with an RS232C serial interface The meter communicates with a PC computer 100 IBM PC AT compatibles through a DB 9 interface connector model 6250 or DB 25 interface connector model 6219 us...

Page 20: ...6250 MODEL 6219 RS232 PARAMETERS BAUD RATE 2400 FIXED PARITY SOFTWARE DRIVER CONTROLLED DATA BITS 8 STOP BIT 1 PROTOCOL SOFTWARE DRIVER CONTROLLED WARRANTY Jenco Instruments Ltd Warrants this product to be free from significant deviations in material and workmanship for a period of 1 year from date of purchase If repair or adjustment is necessary and has not been the result of abuse or misuse with...

Page 21: ... will be charged on all unauthorized returns NOTE Jenco Instruments Inc reserves the right to make improvements in design construction and appearance of our products without notice JENCO INSTRUMENTS INC 7968 Arjons Drive Suite C San Diego CA 92126 USA TEL 001 858 5782828 FAX 001 858 5782886 E MAIL jencoi ix netcom com Homepage http www jencoi com JENCO ELECTRONICS LTD PO BOX LINKOU 117 TAIPEI TAIW...

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