1. DL manuals
  2. JENCO
  3. Measuring Instruments
  4. 6219
  5. Operation Manual

JENCO 6219 Operation Manual

Manual is about: 6250 series; 6219 series MICRO COMPUTER BASED PH / mV / ION / TEMP METER

Summary of 6219

  • Page 1

    Operation manual model 6250/6219 series micro computer based ph/mv/ion/temp meter jenco electronics, ltd. Manufacturer of precision instruments.

  • Page 2: General Description

    1 general description the bench type model 6219 and portable type model 6250 ph/mv/ion/temp meter are precise instrument for the measurement of ph, mv, ion and temperature. A built in micro computer stores, calculates and compensates for all the relevant parameters relating to ph determinations, suc...

  • Page 3: Power Source

    2 operation is confirmed. The model 6250 and model 6219 are used 4.01ph, 7.00ph and 10.01ph standard buffer. The model 6250c and model 6219c are used 4.00ph, 6.86ph and 9.18ph standard buffer. Make sure the model number is that you ordered. Power source the jenco model 6250 operate on either six aaa...

  • Page 4

    3 figure 1 battery compartment.

  • Page 5

    4.

  • Page 6

    5.

  • Page 7

    6.

  • Page 8: Specifications

    7 figure 4 specifications model 6250 6219 range -2.000 to 16.000 ph ph accuracy +/-0.1% +/- 1 digit resolution 0.01 ph or 0.001 ph (selectable) range -1999.9 to 1999.9 mv mv accuracy +/-0.1% +/- 1digit resolution 1 mv or 0.1 mv (selectable) range -5.0 to 125.0 temp accuracy +/-0.5 resolution 0.1 ran...

  • Page 9

    8 1. On/off (power) key: the on/off (power) key toggles the power of the instrument on and off. The current mode and ph/ion calibration values are saved to the internal non-volatile memory of the instrument when turned off and restored when turned back on. 2. Mode key: the mode key selects the displ...

  • Page 10: Operational Procedures

    9 mode 3. Ion values out of the 0 to 119.8 conc. Range when in ion mode operational procedures ph calibration connect the ac adaptor to the ac power line. Make sure the correct ac adaptor is used. It is recommended to conserve the internal batteries by using ac power whenever it is available. Turn o...

  • Page 11

    10 corresponding to the temperature of the buffer 7.00ph or 6.86ph as measured in 1.2. Refer to table 1. If the reading still drifts, repeat 1.3 until a stable reading is obtained. If er1 is displayed, check to make sure that the correct buffer is used and that the electrode offset is less than +/- ...

  • Page 12

    11 clear key and repeat from 2.2. Only buffer 4.01 and 10.01 (model 6250/ model 6219 only) or buffer 4.00 and 9.18 (model 6250c/ model 6219c only) may be used to slope the instrument. Er2 may appear if the slope key is pressed before the electrode and atc/temp probe settle to within +/- 30% of the b...

  • Page 13: Ph Measurements

    12 that the electrode offset is less +/- 1.5 ph. Replace the buffer and/or the electrode. Press clear key and repeat from 2.2. Er1 may appear if the stand/stand i key is pressed before the electrode settles to within +/- 1.5 ph of the buffer value. Allow sufficient time for the electrode to stabiliz...

  • Page 14: Mode

    13 1. Measurement with atc/temp probe in the ph mode. 1.1 removed the ph electrode and rinse with distilled water and immerse it in the sample to be measured and the atc anniciator (model 6250) or green color led lamp (model 6219) will be on (per figure 3). The ph unit , atc, stand and slope indicat...

  • Page 15: Temperature Measurements

    14 temperature measurements the two model 6250/6219 can be used to measure temperature independently with atc/temp probe with using the ph electrode. 1.1 if the ph electrode is not connected to the instrument, the ph input must shorted to the reference input by the protect cap. 1.2 connect the atc/t...

  • Page 16: Ion Measurements

    15 1.3 rinse the working and reference electrode with distilled water and immerse the two electrode in sample to be measured. 1.4 allow sufficient time for the display to stabilize. The instrument will display the millivolt value of the sample. If er5 is displayed, the millivolt value measured is ou...

  • Page 17

    16 will display ion , anniciator 1 ( on the higher left cornor / model 6250) or red color stand i led (model 6219) lamp will flash and the conc. Unit indicator will on. 1.5 press the stand/stand i key, the lcd will display 1.00, anniciator 1 (on the higher left conor / model 6250) or stand i led lam...

  • Page 18: Buffers

    17 temperature coefficient of ph buffers buffers temp(c) 4.01 6.86 7.00 9.18 10.01 0 4.003 6.982 7.119 9.460 10.321 5 3.998 6.949 7.086 9.392 10.248 10 3.996 6.921 7.058 9.331 10.181 15 3.996 6.898 7.035 9.276 10.120 20 3.999 6.878 7.015 9.183 10.064 25 4.004 6.683 7.000 9.183 10.014 30 4.011 6.851 ...

  • Page 19: Introduction

    18 operating the meter using the rs232c interface introduction this section assumes you are familiar with the basic of data communication, the rs232c interface, rudimentary knowledge and a copy of any of the following computer languages: turbo basic, quick basic, turbo pascal and turbo c. This meter...

  • Page 20: Warranty

    19 incorporating the driver to your software you can then use the special commands without worrying about the protocol between the meter and your computer. For the model 6250 reading "man6250.Txt" in the accompanying disk will jumpstart you to using the meter with its rs232c interface. "manual.Txt" ...

  • Page 21: Return of Items

    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...