QiWei DDB-12H and QiWei DDBJ-350 compare

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Model selection comparator If you have any questions, please click below Service	QiWei DDB-12H Conductivity meter (pen) 210.0 RMB China Detail	QiWei DDBJ-350 Conductivity meter (portable microcomputer) 630.0 RMB China Detail

Model comparison

Type	Pen	Portable
Range	＜20 us/cm	＜2000 us/cm
Precision	2.0	1.0
Resolution	1	1 0.1
Temperature compensation	Automatic	Automatic
PH	Without	Without
TDS	without	without
Salinity	Without	Without
Resistivity	Without	Without
Accessories

Parameter comparison

Measurement parameters	Conductivity Detector	Conductivity Detector
Instrument level
Measuring range	0~19.99mS/cm	0~199.9μs/cm；200~1999μs/cm；2.00~19.99mS/cm；20.0~199.9mS/cm
Measurement error	±2% F.S	±1.0% F.S
resolution	1uS	0.1/1μs/cm ；0.01/0.1ms/cm
Stability
Temperature compensation range	0~50℃	10~50℃
data storage
Power	6V (3 * AG13 button battery)
Dimensions	188*38mm
Weight	82g
Electrode constant specification
Data Interface
Operating Temperature	0~50℃
Calibrated point	2 point automatic correction
shutdown mode	Automatic shutdown in 5 minutes
Low Voltage prompt	Yes.Yes.
Temperature unit	℃/℉
Keep function	Yes.
Low Voltage prompt	Yes.Yes.
Display	Conductivity Detector and dual temperature display
Temperature compensation method	automatic	automatic

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