The PHPO monitoring system allows parallel monitoring of 4 or 8 pH and 4 or 8 dissolved oxygen sensors with temperature compensation. Additionally, up to two Pt100 temperature sensors can be connected and two 0/4-20mA / 0-10V analog inputs provide external signal integration. An easy-to-use one or two point calibration procedure for pH, pO2 and temperature is integrated.
The 4 channel PHPO model features 4 optional conductivity-based level inputs. These inputs can be used for level control during continuous operation or automated anti foam addition.

Technical Specifications

Dimensions (WxDxH): 300 x 320 x 190mm
pH Inputs: 4 or 8, pH0 .. pH14 (+/- 0.01 pH), -472 .. +472mV
pO2 Inputs: 4 or 8, 0 .. 500%DO, 0 .. 400nA (+/-0,5nA)
NTC Inputs: 4 or 8, -10 .. 140°C (+/- 0.2 K), 1,7kOhm .. 10000kOhm
Pt100 Inputs: 2, -25 .. 116°C (+/- 0.1 K), 90 .. 160Ohm
Level Inputs: 4, 0..20mS
Analog Inputs: 2, 0/4 .. 20mA or 0 .. 10V
Electrical Supply: 110-240VAC, 50/60Hz
Interface: RS232/RS485