| Professional Plus System Specifications (Instrument, Cables & Sensors) |
Ammonium*
(mg/L-N mV)
ammonia with pH sensor |
Ion Selective Electrode |
0 to 200 mg/L-N, 0 to 30°C |
±10% of reading or 2 mg/L-N, whichever is greater |
0.01 mg/L |
1, 2, or 3 point
(user selectable) |
Barometer
(mmHg, inHg, mbar, psi, kPa, ATM) |
Piezoresistive |
375 to 825 mmHg |
±1.5 mmHg from 0 to 50°C |
0.1 mmHg |
1 point |
Chloride*
(mg/L-Cl-, mV) |
Ion Selective Electrode |
0 to 1000 mg/L, 0 to 40°C? |
±15% of reading or 5 mg/L, whichever is greater |
0.01 mg/L |
1, 2, or 3 point
(user selectable) |
Conductivity**
(µS, mS) |
Four Electrode Cell |
0 to 200 mS/cm (auto-range) |
1 m, 4 m cables:
±0.5% of reading or 0.001 mS/cm, whichever is greater
20 m cable:
±1% of reading or 0.001 mS/cm, whichever is greater |
Range dependent 0 to 0.500 mS/cm: 0.001
0.501 to 50.00 mS/cm: 0.01
50.01 to 200 mS/cm: 0.1 |
1 point |
Dissolved Oxygen
(% saturation)
temp comp range -5 to 50°C |
Polarographic or Galvanic |
0 to 500% |
0 to 200% :
± 2% of reading or 2% air saturation, whichever is greater
200% – 500% :
± 6% of reading |
0.1% or 1% air saturation (user selectable) |
1 or 2-points with zero |
Dissolved Oxygen
(mg/L, ppm)
temp comp range -5 to 50°C |
Polarographic or Galvanic |
0 to 50 mg/L |
0 to 20 mg/L :
± 2% of reading or 0.2 mg/L, whichever is greater
20 – 50 mg/L :
± 6% of reading |
0.1 or 0.01 mg/L (user selectable); 0.1% air saturation |
1 or 2-points with zero |
Nitrate*
(mg/L-N mV) |
Ion Selective Electrode |
0 to 200 mg/L-N, 0 to 30°C |
±10% of reading or 2 mg/L-N, whichever is greater |
0.01 mg/L |
1, 2, or 3 point
(user selectable) |
ORP
(mV) |
Platinum Button |
-1999 to +1999 mV |
±20 mV in redox standards |
0.1 mV |
1 point |
pH
(mV, pH units) |
Glass Combination Electrode |
0 to 14 units |
±0.2 units |
0.01 units |
1, 2, 3, 4, 5, or 6 point (user selectable); US, NIST or Custom Buffers |
Salinity
(ppt, PSU) |
Calculated from Conductivity and Temperature |
0 to 70 ppt |
±1.0% of reading or ±0.1 ppt, whichever is greater |
0.01 ppt |
1 point |
Temperature
Field-rugged cables
(°C, °F, K) |
Thermistor |
-5 to 70°C (23 to 158°F) |
±0.2°C;
±0.3°C cables over 45-meters |
0.1°C |
None |
Temperature***
Lab-grade cables?
(°C, °F, K) |
Thermistor |
0 to 40°C (32 to 104°F) |
±0.35°C |
0.1°C |
None |
Total Dissolved Solids (TDS)
(mg/L, kg/L, g/L) |
Calculated from Conductivity and Temperature |
0 to 100 g/L; TDS constant range 0.30 to 1.00 (0.65 default) |
- |
0.001, 0.01, 0.1g/L |
- |
* ISE sensors for freshwater only; 17-meter maximum depth
** Derived parameters can include resistivity, salinity, specific conductance, and total dissolved solids
*** Lab-grade cables include 605107, -108, -109, 605177, -178, -179 |