pH, mV, ISE, dissolved oxygen, conductivity: The new Multi 350i can measure all of these parameters. If desired, pH, DO, conductivity and temperature can be measured simultaneously: In the laboratory using the combined conductivity/DO probe ConOx, or in the field with the multi-parameter probe MPP 350. All current WTW pH, combination ISEs,DO and conductivity probes can be connected.
High resolution, high precision, simple, menu-driven operation. Even in poor lighting conditions the backlit graphics display provides clearly readable values. With a data logger, memory for 1,800 data sets and a real-time clock support GLP requirements.
Includes built-in NiMH rechargeable battery for up to 1,000 hours of continuous measurements, and appropriate AC adaptor.
pH measurement | |
pH |
-2 ... 20.000 -2.00 ... 20.00 |
mV |
-999.9 ... +999.9 -2000 ... +2000 |
Conc. | 0.01 ... 2000 mg/l |
Temp. | -5.0 °C ... 105.0 °C |
Dissolved oxygen measurement | |
O2 Conc. |
0.00 ... 20.00 mg/l (19.9 mg/l*) 0.0 ... 90.0 mg/l (90 mg/l*) |
O2 saturation |
0.00 ... 200.0% (200%*) |
O2 part. pressure |
0.0 ... 200.0 mbar (200 mbar*) 0.0 ... 1250 mbar |
Temp. | 0.0 ... 50.0 °C |
Conductivity measurement | |
Conductivity |
0.0 µS/cm ... 2000 mS/cm in 5 ranges in AutoRange mode additional: 0.00 µS/cm ... 20.00 µS/cm (K = 0.1 cm-1) 0.000 µS/cm ... 2.000 µS/cm (K = 0.01 cm-1) |
Temperatur | -5.0 °C ... 105.0 °C |
Salinity | 0.0 ... 70.0 |
TDS | 0 ... 2000 mg/l |
Spec. resistivity | 0.00 ... 2000 MOhm |
* also valid for DurOx® |
This waterproof (IP 66) instrument with battery or optional line adaptor also meets the requirements of IP 67 and is optimally suited for use in the field, in laboratories or at production sites. Simultaneous connection of a pH/ORP electrode and a dissolved oxygen sensor or conductivity cell allows up to three parameters (including temperature) to be measured at the same time.
Additional features include:
Multi 340i SET:
pH measurement | pH/Oxi 340i, pH/Cond 340i, Multi 340i |
pH | -2.00 ... +19.99 |
mV | -1999 ...+1999 |
Dissolved oxygen measurement | pH/Oxi 340i, Multi 340i |
O2 concentration |
0.00 ... 19.99 mg/l 0.0 ... 90.0 mg/l |
O2 saturation |
0.00 ... 19.99% 0.0 ... 600%* |
Conductivity measurement | pH/Cond 340i, Multi 340i |
Conductivity |
1 µS/cm ... 500 mS/cm in 4 ranges |
Salinity | 0.0 ... 70.0 |
* depends on sensor and/or sample |
WTW portable multi-parameter instruments stand for precise multi-parameter measuring technology. The pH/Oxi 340i for the determination of pH, dissolved oxygen and temperature and the pH/Cond 340i for the determination of pH, conductivity and temperature, are alternatives to the single parameter instruments for applications that require the measurement of several parameters. The instruments are waterproof and also meet the requirements of IP 67. They are extremely robust and optimally suited for use in the field, in laboratories or at production sites.
Additional features include:
pH measurement | pH/Oxi 340i, pH/Cond 340i, Multi 340i |
pH | -2.00 ... +19.99 |
mV | -1999 ...+1999 |
Dissolved oxygen measurement | pH/Oxi 340i, Multi 340i |
O2 concentration |
0.00 ... 19.99 mg/l 0.0 ... 90.0 mg/l |
O2 saturation |
0.00 ... 19.99% 0.0 ... 600%* |
Conductivity measurement | pH/Cond 340i, Multi 340i |
Conductivity |
1 µS/cm ... 500 mS/cm in 4 ranges |
Salinity | 0.0 ... 70.0 |
* depends on sensor and/or sample |
The WTW ProfiLine Multi 1970i, supplied with integrated powerful NiMH rechargeable batteries, is both waterproof (IP 66) and submersible (IP 67). With its RS 232 output, real-time clock and 500 data file data logger, this rugged meter conforms to all GLP requirements. It allows the simultaneous connection of pH, conductivity and dissolved oxygen probes. The parameter to be measured is set in the display via the “M” function key and can then be measured or stored. Comes equipped with a handle and carrying strap.
The Multi 1970i has a built-in preamplifier and is therefore suitable in combination with the WTW depth armatures for single-parameter operation at depths down to 100 m.
Up to three depth armatures can be simultaneously connected using the adapter ADA/TA 197 pH.
pH | -2.00 ... +19.99 pH |
mV |
-199.9 ... +199.9 mV -1999... +1999 mV |
Temp. | -5.0 ... +105.0 °C |
Conc. |
0.00 … 19.99 mg/l (19.9 mg/l*) 0.0 … 90.0 mg/l (90 mg/l*) |
Saturation |
0.0 … 199.9% (199%*) 0 … 600% |
* depends on DO sensor and medium | |
Conductivity |
0.0 µS/cm ... 500 mS/cm in 5 measuring ranges or AutoRange, 0.00 ... 19.99 µS/cm for K=0.1 cm-1, 0.000 ... 1.999 µS/cm for K=0.01 cm-1 |
Temperature | -5.0 °C ... +105.0 °C |
Salinity | 0.0 ... 70.0 |
TDS | 0 ... 1999 mg/l |