The Apera Instruments ec400s provides accurate and stable EC measurements with various intelligent functions and a durable structure. Equipped with apera's unique bpb (brush-resistant Platinum black) conductivity sensor, the meter takes accurate measurements of EC, TDS, salinity, resistivity and temperature in a wide range . Accuracy: ±1 percent F.S; range: 0 to 200.0 MS/cm. Intelligent functions: quick & easy 1 to 4 points auto calibration. The SMART self-diagnosis helps you conduct proper calibrations and determine the condition of your probe. Glp data management (500 groups of data storage) with PC software support, USB data output and power supply. Timing measuring/data logging mode and SMART calibration reminder function available. The large clear LCD displays EC and temperature simultaneously along with icons of stable readings and finished calibrations. Reliable structure: IP57 waterproof and Dustproof, ideal for use in harsh environments. It comes with a complete Test Kit including a meter, a conductivity electrode, a USB cable, and 3 bottles of calibration solutions all in a rugged carrying case. Powered by AA batteries. The product is CE certified.

Parameter
Models
EC400S
Conductivity
Measuring Range
Conductivity: 0 to 200 mS/cm include:
(0.00 to 19.99) μS/cm; (20.0 to 199.9) μS/cm;
(200 to 1999) μS/cm; (2.00 to 19.99) mS/cm;
(20.0 to 199.9) mS/cm
TDS: (0 to 100)g/L;
Salinity: (0 to 100) ppt;
Resistivity: (0 to 100) MΩ·cm
Resolution
0.01/0.1/1μS/cm 0.01/0.1 mS/cm
Accuracy
±1.0% F.S ±1 digit
Temp. Compensation
0 to 50˚F (32 to 212˚F), Auto or Manual
Electrode Constant
0.1 / 1 / 10 cm-1
Temperature
Measuring Range
-10~110˚C (32 to 230˚F)
Resolution
0.1˚C
Accuracy
±0.5˚C±1 digit
Others
Data Storage
500 groups
Storage Content
Numbering, Date, Time, Measurements, Unit, Temperature
Data Output
USB -- PC-Link Software
Power Supply
AA Batteries*4 (1.5V*4) / USB
IP Rating
IP57 Waterproof and Dustproof
Dimensions and Weight
Meter: (7.8*3.4*1.25) inches / 12 oz.
With carrying case: (13*15*3.5) inches/3.6 pounds