Product Details

PHEHT Combination pH, Redox & Temperature Sensor Description
The pH/ORP cartridge is designed to last for an extended time with Plastogel technology meaning recalibration and replacement is infrequent. The sensor has been designed for the most difficult situations for a pH/ORP sensor in terms of sensor resistance, quick response time, minimal flow dependence and low power consumption.

Digitally optimised measurement technology
• Combination pH, redox & temperature sensor
• Smart sensor stores configuration settings and calibration history
• Digital sensor: Modbus RS-485
• Field replaceable pH/ORP sensor cartridge
• Robust and watertight

PHEHT Combination pH, Redox & Temperature Sensor Range
• pH: 0 to 14
• Redox: -1000mV to +1000mV
• Temperature: -10°c to +50°c

PHEHT Combination pH, Redox & Temperature Sensor Applications
The PHEHT sensor has been designed to perform under hard conditions, from pure mountains water with conductivity as low as 20 µS/cm, lakes and rivers (100 - 2000 µS/cm), seawater with conductivities of 50 mS/cm, to waste water with conductivity higher than 200 mS/cm.

PHEHT Combination pH, Redox & Temperature Sensor Specifications

pH
Measurement principle	Combined electrode (pH/ref) : special glass, Ag/AgCI ref. Gelled
Range	0 - 14 pH
Resolution	0,01 pH
Accuracy	+/- 0.1 pH
Redox
Measurement principle	Combined electrode (Redox/reference) : Platinum tip, Ag/AgCI AgAgCl. Gelled
Range	-1000 to +1000 mV
Resolution	0.1 mV
Accuracy	± 2 mV
Temperature
Technology	CTN
Range	0,00 °C to + 50,00°C
Resolution	0,01 °C
Accuracy	± 0,5 °C
Response time	<5 s
Operating temperature	0°C to + 60°C
Protection	IP 68
Interface	Modbus RS-485 / SDI-12 (option)
Power supply	5 to 12 volts
Power consumption	Standby : 25μA, Average RS485 (1 measure/second) : 3,9 mA, Average SDI12
Sensor
Dimensions	Diameter : 27 / 21 mm ; Length : 207 mm
Weight	350 g (sensor + 3 m cable)
Material	PVC, special pH glass, platinum
Pressure	5 bars
Cable	Coaxial armoured, Polyurethane, bare wire or Fisher connector
Protection	IP68 up to gland