Polilyte Plus H pH Sensors

Hamilton CompanySKU: 242428-1213


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Available to Order


Long life and high accuracy in industrial applications

Polilyte Plus sensors have a maintenance-free design to withstand demanding industrial applications in chemical, petrochemical, process water, and wastewater treatment applications. Common reference problems such as clogging are eliminated with the two Single Pore junctions. The Polilyte sensors show good measurement accuracy in highly alkaline solutions as well as in samples with low conductivity. Additionally, the Everef-L reference cartridge ensures a long lifetime. A stabilized sensor signal and an extended sensor diagnosis thanks to the integrated Liquid Earth in the VP are further features of the Polilyte Plus.

Polilyte Plus Arc sensors offer intelligent sensors features for difficult industrial processes, with direct 4-20mA or Modbus output from the sensor, simplifying your process loops. With adapters for galvanically isolated outputs and diagnostics, Polilyte Plus H Arc sensors are ideal for new and retrofitted installations.



a-length 120mm, 225mm, 325mm, 425mm
Electrical Connector S7/S8, VP6, Memosens, Arc
Measurement Principle Combination electrode; pH potential measured against reference
Measuring Range pH 0 to 14
Sensitivity 57 to 59 mV / pH at 25 °C
Zero Point 0 ± 20 mV
pH Glass Hamilton Type H Glass
pH Glass Resistance Moderate
Membrane Shape Spherical
Diaphragm Single Pore
Number of Diaphragms 2
Electrolyte Polisolve Plus
Reference System Hamilton Everef-L
Liquid Earth Yes
Temperature Sensor S7/S8 - No, Arc - Yes, Memosens - Yes, VP6 - Pt100 or Pt1000
Diameter 12 mm
Process Connection PG13,5
Wetted Parts Glass
FKM (Fluorocarbon Elastomer)
Serial Number Yes
Recommended Storage Hamilton Storage Solution or 3 M KCl
Certificate Yes, with measured values in Buffer pH 4.01 and pH 7.00
Autoclavable Yes, max. Temperature 130 °C
Steam Sterilizable Yes, max. Temperature 130 °C
Operating Temperature Range 0 to 130 °C
Sample min Conductivity 2 µS/cm
Pressure Range bar g 0 to 16 bar (100 °C), 0 to 10 bar (130 °C)


Specific Arc sensor specifications

Analog Interface 1 4-20 mA for pH, programmable
Analog Interface 2 4-20 mA for Temp., programmable
Analog Interface 1 and 2 Galvanically not isolated; pulse width modulation 3.5 kHz
Digital Interface RS485 Modbus (max. 31 addresses)
Configurable Values pH: pH, mV; Temperature: °C, K, °F
Temperature Sensor NTC22 kOhm
Baud Rate 4800, 9600, 19200, 38400, 57600,115200 bd
Operating Voltage 7 to 30 VDC max. 150 mW

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