The most widely used pH + Conductivity Double-Parameter measurement meter.

Meter meets with the requirement of international GLP standards. Its features up to automatic calibration, automatic temperature compensation, data storage, timing measurement, clock display, RS-232 output, function setting and self-diagnose etc.

There are three different measurement modes: stable display mode; time measurement mode; continuous measurement mode.

Automatically recognize pH buffer solution. User can choose anyone from three series of standard buffer solutions: Europe & USA series, NIST series and China series.

Adopt advanced and original conductivity measurement technology, use 1 pc of conductivity electrode (K=1), it can meet measuring accuracy requirement for range within 0.5μS/cm ~ 200mS/cm by using only one-point calibration.

Can switch Conductivity, TDS, Salinity and Resistivity.

Dustproof and waterproof meter meets IP54 standards. All sockets are seal protected by the silica gel caps.

pH	Measuring range Resolution Accuracy Input current Input impendance Stability Temp. compensation range	(-1.99 ~ 19.99)pH 0.1/0.01/0.001 pH Meter:±0.01pH, connect meter with electrode:±0.01pH ≤1×10-12 A ≥3×1012 Ω +/-0.01 pH/3h (0 to 100) ℃(automatic or manual)
mV	Measuring range(mV/ORP/EH) Resolution Accuracy	-1999.9mV ~ 0 ~ 1999.9mV 0.1mV +/-0.03% FS
Conductivity	Measuring range           Resolution Accuracy Temp. compensation range Electrode constant Reference temperature	Conductivity: (0.00~20.00) μS/cm ( 20.0~200.0) μS/cm (200~2000)μS/cm  (2.00~20.00) mS/cm (20.0~200.0)mS/cm Resistivity: (0 ~ 100)MΩ·cm TDS:  (0 ~ 100)g/L Salinity: (0 ~ 100)ppt 0.01/0.1/1μS/cm  0.01/0.1/1 mS/cm Meter:+/-1.0% FS,connect meter with electrode:±1.5% FS (0 ~ 50)℃(automatic ) 0.1 / 0.5 / 1 / 5 / 10 / 50 / 100  cm-1 25℃, 20℃ and 18℃
Temperature	Measuring range Resolution Accuracy	-10℃~ 110℃ 0.1℃ 5~ 60℃range: 0.4℃  other range: 0.8℃
Other Technical Parameters:	Data storage Storage content   Power Communication connector Size and weight Quality and safety certification	300 groups Measuring value series number, measuring value, temperature, ATC or MTC state, measuring date and time DC9V/300mA RS232 160 × 190 × 70mm/880g ISO9001:2008, CE and CMC
Working Condition	Environment temperature Environmental humidity IP rating	5 ~ 35 ℃(0.01grade) 15 ~ 30 ℃(0.001grade)≤75% IP54 Dustproof and waterproof

 

Standard Kit includes:

 

1. Model 521 Lab pH/Conductivity meter	1set
2. Model 602 flexible electrode holder	1pc
3. 201T-M plastic pH/ATC three-in-one combination electrode	1pc
4. 2301T-M plastic pH/ATC three-in-one combination electrode	1pc
5. pH standard buffer solution(pH4.00, pH7.00 and pH10.01/50mL)	1btl/each
6. 1413μS/cm conductivity standard solution(50mL)	2btls
7. 9V power adapter(meter use)e	1pc
8. RS-232 communication cable	1pc
9. MP521 communication software disk	1pc
10. Operation manual	1unit
11. Brief operation instruction	1unit
12. Packing List	1pc