Portable Conductivity Meter

DD-30

The Portable Conductivity Meter is a compact and portable laboratory-grade instrument designed for precise conductivity measurements. It is widely applicable in industries such as petrochemicals, biopharmaceuticals, wastewater treatment, and mining/metallurgy, as well as for measuring conductivity, resistivity, salinity, and TDS (Total Dissolved Solids) in aqueous solutions.

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Description
Accessories

Brand: WATENV
Commodity name: Portable Conductivity Meter
系列: DD-30

Features

Stores up to 500 datasets with options to delete, review, and export.

Advanced Functions

Power-off protection, factory reset, auto-shutdown, and parameter memory.

Automatically recognizes four standard conductivity solutions: 146.6 μS/cm, 1408 μS/cm, 12.85 mS/cm, and 111.3 mS/cm.

IP65-rated enclosure protects against liquid splashes and corrosion.

Supports continuous measurement mode and stable measurement mode (DD30-3/4);

Supports single-point and multi-point electrode calibration function (DD30-3/4);

Supports manual temperature compensation and automatic temperature compensation (DD30-3/4).

Technical Parameters

Model		DD30-1	DD30-2	DD30-3	DD30-4
Accuracy Class		1.0	1.0	1.0	0.5
Power Supply		Input AC100～240V 50～60Hz 0.35A; Output DC5V/2A
Screen		4-inches LCD
Temperature Compensation		Manual	Manual	Manual /Automatic	Manual /Automatic
Manual Temperature Compensation Range		0.0～60.0℃	0.0～60.0℃	0.0～60.0℃	0.0～60.0℃
Automatic Temperature Compensation Range		/	/	-5.0～110.0℃	-10.0～135.0℃
Minimum Temperature Resolution		0.1℃/℉	0.1℃/℉	0.1℃/℉	0.1℃/℉
Temperature Accuracy		/	/	±0.4℃ (0.0℃～60.0℃)
Conductivity	Measurement Range	0.00μS/cm～100mS/cm	0.00μS/cm～200mS/cm		0.000μS/cm～2000mS/cm
	Minimum Resolution	0.01μS/cm	0.01μS/cm	0.01μS/cm	0.01μS/cm
	Electronic Unit Error	±1.0%(FS)	±1.0%(FS)	±1.0%(FS)	±0.5%(FS)
	Electronic Unit Repeatability	0.33%(FS)	0.33%(FS)	0.33%(FS)	0.17%(FS)
	Instrument Error	±1.5%(FS)	±1.5%(FS)	±1.5%(FS)	±0.8%(FS)
	Instrument Repeatability	0.7%(FS)	0.7%(FS)	0.7%(FS)	0.4%(FS)
TDS	Measurement Range	/	0.00mg/L～100g/L		0.000mg/L～1000g/L
	Minimum Resolution	/	0.01mg/L	0.01mg/L	0.001mg/L
	Electronic Unit Error	/	±1.0%(FS)	±1.0%(FS)	±0.5%(FS)
Resistivity	Measurement Range	/	/	/	5.00-100.0MΩ.cm
	Minimum Resolution	/	/	/	0.01Ω.cm
	Electronic Unit Error	/	/	/	±0.5%
salinity	Measurement Range	/	/	/	0.00-8.00%
	Minimum Resolution	/	/	/	0.01%
	Electronic Unit Error	/	/	/	±0.1%
	InstrumentError	/	/	/	±0.2%
Calibration Points		1	1	1-3	1-3
Standard Solution Recognition		146.6μS/cm, 1408μS/cm 12.85mS/cm	146.6μS/cm, 1408μS/cm 12.85mS/cm, 111.3mS/cm
Data Storage		200 sets	200 sets	500 sets	1000 sets
Standard Electrode		LC-DJS-1(Platinum Black)		LC-DJS-1(Platinum Black) T-10K
Electrode Interface		Q9	Q9	Q9	Q9
Dimensions (mm)		200×80×50	200×80×50	200×80×50	200×80×50
Weight (kg)		0.45	0.45	0.45	0.45

pH Electrode Combination	E-201-C	E-301-C
pH Measurement range	0~14ph	0~14ph
Junction Type	Single Salt Bridge	Single Salt Bridge
Reference System	Ag/AgCl	Ag/AgCl
Reference Junction Type	Non-refillable	Non-refillable
Connector Type	BNC (Q9)	BNC (Q9)
Cable Length	1 meter	1 meter
Operating Temperature	5~60℃	5~60℃
Electrode Storage Solution	3 mol/L KCl	3 mol/L KCl
Sensing Membrane	Spherical glass bulb	Spherical glass bulb
Combination	Reference + sensing	Reference + sensing + temperature probe
Temperature Electrode	/	2.5mm audio jack connector
Dimensions	12mm*160mm	12mm*160mm
Weight	0.060kg	0.078kg

pH Electrode Glass	6502	6503
pH Measurement Range	2–12	0–14
Junction Type	Ceramic	Ceramic
Electrode Body Material	Glass	Glass
Reference System	Ag/AgCl	Ag/AgCl
Reference Junction Type	Double junction, Refillable	Double junction, Refillable
Connector Type	Q9	Q9
Cable Length	1 meter	1 meter
Operating Temperature	5–90°C	5–90°C
Electrode Storage Solution	3 mol/L KCl	3 mol/L KCl
Sensing Membrane	Spherical glass bulb	Spherical glass bulb
Combination	Reference + sensing	Reference + sensing
Dimensions	φ12 × 165 mm	φ12 × 165 mm
Weight	0.1 kg	0.1 kg

Electrode Selection Guide

pH Electrode Glass	6502	6503
General Laboratory Use	Y	Y
Strong Acids/Bases or High-Corrosion Environments	×	Y
Low-Conductivity Solutions	Y	×
Pure Water	Y	×
Biochemical samples	×	×
Tris-containing solutions	×	×
Soil Water, Wastewater	×	Y
Viscous, Emulsion, or Oily Substances (emulsions, food products, cosmetics, pigments, paints)	×	Y

(Note: Y = Suitable, × = Unsuitable)

ORP Electrode	5001
Body Material	Plastic
Sensor Design	Needle-Type PlatinumTip
Reference System	Plastic Fiber, Single Junction, Non-Refillable
Connector Type	Q9
Cable Length	1 Meter
Operating Temperature	5–60°C
Electrode Storage Solution	3mol/L KCl Solution
Electrode Features	General-Purpose
Dimensions	Φ12×160mm
Weight	0.1kg

Conductivity Electrode	DJS-0.1	DJS-1 (Platinum Black)	DJS-10 (Platinum Black)
Application	Ultra-pure water, pure water	Environmental water, routine water	High-electrolyte solutions
Housing Material	Glass	Glass	Glass
Cell Constant (K)	0.1±0.02	1±0.2	10±2
Measurement Range	0.055～300µS/cm	50～2000µS/cm	2～100mS/cm
Dimensions (mm)	φ12×155	φ12×155	φ12×155
Weight (kg)	0.1	0.1	0.1

Temperature Electrode	T-10K
Material	Stainless steel
Temperature Coefficient	10K
Measurement Range	0-100℃
Dimensions	φ12×155 mm
Weight	0.1kg

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Benchtop pH Meter

Portable pH Meter

Conductivity Standard Solution	Nominal Value	Specification	Shelf Life
	146.6 µs/cm	4 × 50 mL bottles	6 months
	1408 µs/cm	4 × 50 mL bottles	12 months
	12.85 ms/cm	4 × 50 mL bottles	12 months
	111.3 mS/cm	4 × 50 mL bottles	12 months