Hydrogen Peroxide Probe System

H2O2
in water

Insitu measurements and profiling in shallow water
Accurate - Reliable - Small Dimensions - Easy Handling
 

The determination of Hydrogen Peroxide is one of the most important parameters for the online control in industry. Furthermore, the observation of the oxidation processes in industry or in waste water (e.g. to oxidise H2S) is of high interest.
Because H2O2 is an expensive raw material, there is a permanent demand to save money of course. This new probe system may help here, if the hydrogen peroxide concentration is determined continuously and insitu.
Due to high chemical reactivity of hydrogen peroxide, the determination of H2O2 was difficult until now.
Another fact is, that analytical methods based on sampling lead mostly to wrong results, even though the sampling and the determination have been done very carefully.
Another point is, that the alternative volumetric titration is very time consuming and there are permanent costs for chemicals.
A sensor or a probe system could allow the continuous reading of the hydrogen peroxide concentration.
Titrations can only deliver average concentrations of a well-defined volume.
Fast changes of the concentration or local concentration gradients are only visible with in-situ sensors or probe systems.
All these disadvantages could be avoided, if the new Submersible H2O2 Probe is used for the accurate and reliable insitu determination in depths of up to 100 m (10 bar).

Special Features:

=>  Sensors for H2O2 (amperometric micro-sensor), temperature and depth
=>  Very easy sensor exchange
=>  Windows based software for display of chemical/physical units and diagrams
=>  Free selection of displayed parameters (H2O2, temperature, depth/pressure)
=>  Titanium made housing and protection cage
=>  Subconn titanium connector
=>  Very small dimensions (48 mm diameter, 440 mm total length)
=>  Low weight of approx. 1.1 kg
=>  Low running costs for chemical sensor replacement

The Submersible H2O2 Probe is equipped with a precision microprocessor-controlled 4-channel 16 bit analogue to digital converter.
The data are available as RS-232 signal (multi-conductor polyurethane covered cable) and optional as FSK signal modulated on constant current (single-conductor cable).
The probe can be powered by battery or DC power supply (9 to 30 V DC) when using the RS-232 output or by constant current with FSK telemetry output (coaxial connection) for longer distances.
An interface for constant current supply is available

 Probe with removed protection
cage.
Sensors for H2O2, pH,
temperature

and depth.

Standard Sensor Equipment

Sensors Principle Range Accuracy Resolution  Response time
Pressure Piezo resistive 10 bar  +/-0,1% FS 0,002 % FS 150 ms
Temperature PT 100 -2…+36C  +/- 0,05C 0,0006 C 1 sec
pH single rod
electrode
 0…14 pH +/-0,02 pH 0,0002 pH  1 sec
H2O2 Amperometric 
Micro-sensor
0,02 …10% or other on demand 2% of reading 0,02% H2O2  < 2 sec

Technical data of the probe system

Feature On-line probe Memory Probe
Dimensions: 48, length: 400 mm 48, length: 440 mm
Weight on air: 1,1 Kg 1,3 Kg
Material Titanium  Titanium
Connector Sub conn MCBH4M Sub conn MCBH5M
Power supply  External 9…30 Volt DC Esternal 7…1 6 Volt DC
Internal Battery 1…5 VDC
Corrent consumption
 
12 mA at 12 VDC External Power supply : 15 mA
Li battery  (3,6 V) : approx. 20…35 mA
Alk.-Battery  (1,5 V ) approx.  50…90 mA
Data Output  Serial port RS 232
option: FSK telemetry
Serial port RS 232
 
Memory
capacity
none 8 MB ( approx. 350.000 data sets)

In view of our policy of continual improvement, the design and specifications of our products may vary from those illustrated in this brochure.


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