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Sensor type 

Graphite plate 

TDS (Total Dissolved Solids)

Measurement range 

0 to 19.99 ppm 

0 to 199.9 ppm 

0 to 1999 ppm 

0 to 19.99 ppt 

0 to 199.9 ppt 

Accuracy 

±1% of full scale + 1 digit 

Resolution 

0.01 ppm, 0.1 ppm, 1 ppm ; 0.01 ppt, 0.1 ppt 

Salt

Measurement range 

0~42.0 ppt (Seawater) 

Accuracy 

±1% of full scale + 1 digit 

Resolution 

0.1 ppt 

ATC Temperature 

sensor 

Probe port 

3.5 mm diameter phone jack 

Cable length 

1 M 

KEYPAD (CONTROLS) 
PWR:
 Power on (Press in one second) or power off (Press more than 2 seconds when operation). 
SET: Move to left digit. Short press to toggle COND 

  EC 

 

TDS 

  Salt. Long press to save setting. 

CAL: Move to right digit. To clear SD manual record data. 
MODE: Select sample rate of SD card. Toggle Cond

t1F

tds (under K value adjustment mode).    

Toggle 1413 uS calibration mode to 12.8 mS calibration mode (under Conductivity calibration mode). 
UNIT: Short press to change temperature unit 

/

. Long press to select temperature probe type. 

Short press to select NTC: Negative Temperature Coefficient)/ NOT: no remote temperature probe. 
HOLD: Freeze current readings (Hold shows at top of LCD). Increase value. 
ADJ: Long press to start SD recording (SD card is inserted to the meter). Decrease value. 
SET+UNIT: Enter cond. cell constant K value / Temp. coefficient compensation/tds K factor value mode. 
Long press again to escape the K value setting. Recovery to factory setting (under calibration mode). 
SET+CAL: Conductivity Calibration. 
HOLD+PWR: Disable Auto Power Off. 

OPERATION 
COND/EC/TDS/SALT PROBE INSTALLATION (BNC connector): 

a)

Insert the COND electrode into the top of left hole. And insert the 3.5mm Ø diameter phone jack ATC

 

sensoring parts into the middle of hole.

b)

Hold the BNC connector in one hand; with the other, insert the braid into the center of the connector.

 

Continuing pushing the braid into the connector until it will not go in any farther. Do this gently and slowly;

 

do not bend the braid.

c)

Turn the BNC connector in a clockwise direction, until you cannot turn it anymore.

NOTE: 
For each operation, make sure you are using fresh batteries, same brand, same power of batteries is required, 
and otherwise meter shows erratic readings or leakage. Warranty is void if not follow the notices. (Note

remove 

batteries when not use

1. There are two ways to provide power:
(a) AAA batteries x 3pcs
(b) 9V AC/DC adaptor.
   Battery icon  

  indicates when power is weak, replace with new batteries immediately as the readings 

   now on LCD are incorrect due to weak power. 

Battery life: Approx. 50 hours for continuous used. Approx. 11.5 hours for activating SD function (w/

sample rate: 2 seconds). Approx. 13 hours for activating SD function (w/ sample rate: 1 hrs).

2

Summary of Contents for CDH-SD11

Page 1: ...e mail info omega com For latest product manuals www omegamanual info Shop online at omega com User sGuide CDH SD11 Conductivity TDS and Salinity Meter with Real Time SD Card Data Logger TM 2 e Fo...

Page 2: ...pecifications without notice Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Canada only Engineering Servi...

Page 3: ...two years Electrode is one year SUPPLIED Meter Electrode x 1pc Cond EC TDS Salt Battery AAA x 3 pcs 1413uS buffer solution x1 9V adaptor Black carrying case 8G SD card SPECIFICATION Model CDH SD11 Par...

Page 4: ...stant K value Temp coefficient compensation tds K factor value mode Long press again to escape the K value setting Recovery to factory setting under calibration mode SET CAL Conductivity Calibration H...

Page 5: ...uto power off function by pressing HOLD and PWR button n momentarily shows on screen now meter is at non sleep mode then turns to normal measurement Meter default auto power off 6 FACTORY RESET a Cond...

Page 6: ...r 2 Power on the meter by pressing PWR button 3 First to enter the cell constant K value of the Cond electrode is required e g Refer to the label on the top handle of the probe Long press SET UNIT to...

Page 7: ...right digit Long press SET button to finish calibration screen will show SA The adjustable range is 1 to 7 4 Or to escape setting by long press SET UNIT the bottom of screen will show ESC in few seco...

Page 8: ...measurement except to change the display unit from uS mS to PPM PPT Display will show TDS values at the same time the left bottom display will show the temp value of the measured solution NOTE If the...

Page 9: ...808 1837 1866 1896 1925 1954 1983 2013 2042 2071 2101 2103 CONDUCTIVITY STANDARD SOLUTION 12880 S cm at 25 C Conductivity reading will be affected by the temperature S cm S cm 5 10 15 16 17 18 19 20 2...

Page 10: ...c If the SD card is being used for the first time it is recommended that the card be formatted SD Card Formatting NOTE Always confirm that the device is compatible with the SD SDHC or SDXC memory card...

Page 11: ...essions the recorded data will be switched into the selected temperature unit 1 Power on the meter by AAA batteries or 9V AC DC adaptor 2 After inserting the SD card display will show icon SD on the b...

Page 12: ...for no data can be cleared or SD card isn t being inserted NOTE Once clear the data by long press CAL there is no way to recover the data If you want to keep the previous data rename the file MANUAL c...

Page 13: ...ensor type or adjust temperature manually Long press UNIT button then press UNIT to select not Q2 Appear Error codes A2 Make sure if Hold appears on LCD ERROR CODES Code Description The electrode were...

Page 14: ...A if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to m...

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