3900 and 3900VP pH/ORP general purpose sensors sensors

3900 and 3900VP pH/ORP general purpose sensors sensors

3900 and 3900VP models are equipped with dual electrolyte tank, which serves for reference electrode protection against ammonia, chlorine, cyanide and sulphide ions pollution. Both models have membrane made of porous teflon located close to sensitive pH/ORP membrane. 3900 and 3900VP model sensors have in-built SMART option allowing to carry out automatic data exchange about calibration timing and intervals, data storage and pH diagnostics (inclination, displacement, reference impedance, glass impedance). Sensors are fixed in a leak-proof chemically resistant casing made of polyphenylene sulphide.

Technological information and specifications
Structural materials  Stainless steel, glass, teflon®, polyphenylene sulphide (PPS), EPDM and silicone
Process connection of sensor Front part: ¾- and 1 in., external normal pipe thread (MNPT)
Rear part: 1 in., MNPT thread
Percentage linearity as per pH range Range Linearity
0-7 97%
1-7 98 %
4-7 98 %
7-10 99 %
7-12 97 %
7-13 96 %
7-14 95%
Measurement range pH: AccuGlass 0-14

Redox: from  -1500 to +1500 mV

Temperature compensation Automatic temperature compensation within the range from -10 to 100 °C
Pressure Max. 790 kPa (absolute)  at 100 °C
Operating Temperature from -10 to 100°C
One-piece cable 10M cable with in-built SMART preliminary amplifier; 4.7 , cable without preliminary amplifier.
VP8 cable Cable length: from 0.8 m to 31 m
Weight / gross weight 0.45 kg/0.9 kg

3900 and 3900VP models are equipped with dual electrolyte tank, which serves for reference electrode protection against ammonia, chlorine, cyanide and sulphide ions pollution. Both models have membrane made of porous teflon located close to sensitive pH/ORP membrane. 3900 and 3900VP model sensors have in-built SMART option allowing to carry out automatic data exchange about calibration timing and intervals, data storage and pH diagnostics (inclination, displacement, reference impedance, glass impedance). Sensors are fixed in a leak-proof chemically resistant casing made of polyphenylene sulphide.

Technological information and specifications
Structural materials  Stainless steel, glass, teflon®, polyphenylene sulphide (PPS), EPDM and silicone
Process connection of sensor Front part: ¾- and 1 in., external normal pipe thread (MNPT)
Rear part: 1 in., MNPT thread
Percentage linearity as per pH range Range Linearity
0-7 97%
1-7 98 %
4-7 98 %
7-10 99 %
7-12 97 %
7-13 96 %
7-14 95%
Measurement range pH: AccuGlass 0-14

Redox: from  -1500 to +1500 mV

Temperature compensation Automatic temperature compensation within the range from -10 to 100 °C
Pressure Max. 790 kPa (absolute)  at 100 °C
Operating Temperature from -10 to 100°C
One-piece cable 10M cable with in-built SMART preliminary amplifier; 4.7 , cable without preliminary amplifier.
VP8 cable Cable length: from 0.8 m to 31 m
Weight / gross weight 0.45 kg/0.9 kg