DCM7021 - General Tools And Instruments
Contents
1. DCM7021 Manual pman sistah 1 8 15 08 12 00 PM Page 1 DCM7021 USER S MANUAL D Cond TDS Salt e s Digital Conductivity Meter INTRODUCTION Thank you for selecting model DCM7021 microprocessor based waterproof Digital Conductivity Meter It is used to measure a wide range of Conductivity TDS Salinity and Temperature with a replaceable electrode Please read and follow the manual carefully DCM7021 Manual FINAL 8 15 Layput 1 8 15 08 12 00 PM Page 2 Wz FEATURES e Large LCD displays Temperature along with Conductivity or TDS or Salinity simultaneously e Waterproof to IP 57 standard e Automatic Temperature Compensation ATC e Degree F C switchable e icon EO BS EIE and unit S mS ppm ppt F C for easy recognition while selecting function modes e Displays MIN MAX value and Data hold e Low battery indicator e Automatically shuts off after 10 minutes of non usage e Easy to replace Conductivity electrode module e Floats on water SPECIFICATIONS Conductivity TDS Range 0 to 2000 uS 0 to 1300 ppm 0 to 1000 ppm 32 to 194 F 2 00 to 20 00 mS 1 30 to 13 00 ppt 1 00 to 12 00 ppt 0 to 90 C Accuracy 2 FS Cond TDS Salt 0 4 F 1 digit D 0 2 C 1 digit 0 2 F 0 1 C 4 AAA batteries Dimensions Meter 7 7 x 1 6 x 1 4 195 x 40 x 36mm Kit 94 x 8 1 x 2 230 x 205 x 50mm Weight Meter 4 8 oz 135 g with battery2. P Kitt 22 6 020640 S di ar DCM7021 Manual FINAL 8 15 Layput 1 8 15 08 12 00 PM Page 3 ae DEVICE DESCRIPTION Lanyard Connection Battery Compartment Cap Main Display ond TDS Tomp Hold MIN amp MAX Button e j Function Mode eS ry Button Power Calibration Button Electrode Collar Protective Cap Electrode Module Sensor Tip j a Sensor Protective Cap Ai ae DCM7021 Manual FINAL 8 15 Laybut 1 8 15 08 12 00 PM Page 4 DISPLAY DESCRIPTION am oa a e e O O O O O O O O O O _ pt mS pin ppm iih Unit Measuring _ A Calibration i X xT i Ii I mode l i s A E Function Mode Maximum rie Battery i MAX CAL m D x Pf Temperature F indicator a m MIN HOD 7 LI Dire Automatic ab a Hold reading FUNCTIONS OF KEYBOARD POWER CALIBRATION 1 Press button to switch power On or Off 2 Press and hold button to enter calibration mode FUNCTION MODE 1 Press button to select the desired measurement mode Conductivity TDS or Salinity 2 Press and hold button to change degree F or C HOLD MIN amp MAX 1 Press button to enter Hold mode 2 Press and hold button to enter Minimum Maximum mode Press button lightly to get Minimum Maximum value 3 Press and hold button again to exit this mode and return to Measurement mode di ar DCM7021 Manual FINAL 8 15 Layput 1 8 15
3. 08 12 00 PM Page 5 ae OPERATING PROCEDURE ACCESSORIES Upon receiving the shipment inspect the container and equipment for any signs of damage Verify that you have received all the items listed Meter Standard Solution 1413 uS cm Battery installed Lanyard Instruction Manual and Carrying Case PREPARATION 1 Remove the protective cap from the meter Rinse the electrode with clean water and wipe it dry 2 Press button to turn the meter power on Note Don t touch or wipe the surface of inner black sensor of the conductivity cell CALIBRATION Dip the conductivity cell into the standard solution 1413 uS cm Stir gently and wait until the display is stabilized Press and hold 2 button to enter calibration mode until the icon CAL appears in the display and flashes 1413 pS cm When the display stops flashing and indicates SA and then End while calibration is ending it will return to measurement mode Note 1 Calibration with a 12 88 mS cm standard solution would be better for measuring high conductivity solution 2 The icon will appear automatically during calibration mode 3 SA will not appear if the calibration fails Cp 4 If the reading is not 0 uS cm while the meter is in the air and not dipped into any D solution then calibrate it in the air to make the reading become 0 uS cm MEASUREMENT 1 After calibration rinse the conductivity cell with clean water and wipe it dry Dip the conducti
4. White Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com DCM7021 User s Manual Specifications subject to change without notice 2008 GENERAL TOOLS amp INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN DCM7021 8 08 di aL
5. ry compartment cap and tighten the screw Note 1 Be sure batteries are in the correct position by polarity 2 Don t loosen the O ring which has been mounted on cap ELECTRODE REPLACEMENT 1 Unscrew the electrode collar counterclockwise and remove it completely 2 Pull the electrode module out from the tester 3 Plug a new electrode module into the tester socket carefully Cp 4 Place and tighten the electrode collar to make a good seal D APPLICATIONS Agriculture Anti freeze recycling Aquarium boiler e Chemical industry Cooling tower e Drinking water Fish farming Food industry Garden husbandry Hydroponic Laboratory usage Plating industry e Swimming pool amp Spa Water treatment di ar 7 DCM7021 Manual FINAL 8 15 Layput 1 8 15 08 12 00 PM Page Wz Calibration Certificate This certificate guarantees that this product has been inspected and tested in accordance with the published specifications The instrument has been calibrated by using equipment which is already calibrated to standards traceable to International standards Model DCM7021 Serial no ae HBS OO SSC SSC SSC SSC SSC SWC SSC A SSC SC SSW SC SSW SSC SS SW S Pp ft DCM7021 Manual FINAL 8 15 Layput 1 8 15 08 12 00 PM Page 8 ee GENERAL Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80
6. vity cell into sample solution to be measured Stir gently and wait until a stable reading can be obtained 2 Press ap button to select the desired measurement mode Conductivity TDS or Salinity Note 1 __ _ _ will appear in the display when it is over the measuring range 2 The unit will auto range to yS cm or mS cm ppm or ppt FUNCTIONS MODE 1 Press Gi button to enter Hold function mode The icon HOLD will appear and the reading value in the display can be locked Press button again to return to Measurement mode 2 Press and hold Gh button to enter the measuring Maximum and Minimum function mode Hold button until a flashing icon MAX and MIN appears in the display The value of maximum and minimum will appear in the display while pressing the button lightly To exit this mode press and hold Gp button until icon MAX and MIN disappears and returns to Measurement mode di ar DCM7021 Manual FINAL 8 15 Layput 1 8 15 08 12 00 PM Page 6 ae 3 Press ED button to select the desired measurement mode Conductivity TDS or Salinity 4 Press and hold ED button to change F or C Note 1 The display can not auto shut off under the status of MAX MIN mode 2 Change new batteries when the battery indicator flashes MAINTENANCE BATTERY REPLACEMENT 1 Loosen the screw with a screwdriver on the battery compartment cap 2 Replace with fresh 4 AAA batteries and note polarity 3 Replace the batte
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