Gasanalyse

MiniProbe M7873 Zirkoniumoxid Rauchgasanalysator

Self-heated probe, designed to measure Oxygen in flue gas (up to 700°C) for combustion efficiency and fuel saving in small and medium boilers fed by Natural Gas, light and medium oils, Oxygen control in drying biological muds process, measure of water vapor content in Textile and Pulp&Paper. 

Self-heated probe, designed to measure Oxygen in flue gas (up to 700°C) for combustion... mehr
Produktinformationen "MiniProbe M7873 Zirkoniumoxid Rauchgasanalysator"

Self-heated probe, designed to measure Oxygen in flue gas (up to 700°C) for combustion efficiency and fuel saving in small and medium boilers fed by Natural Gas, light and medium oils, Oxygen control in drying biological muds process, measure of water vapor content in Textile and Pulp&Paper. Available as a transmitter with 4-20 mA output from the probe head or combined with a control unit / display. MiniProbe M7873 is the only SIL 2 compliant Zirconia in situ analyser able to ensure a reliable O2 measure in safety-demanding applications such as biological mud dryers.

 

Measureable Gas

Oxygen [O2]

Water [H2O]

 

Main Features

Extreme Roughness

- Rugged materials contacting the process gas

- Usable in flue gas up to 700°C, either continuously or cyclically

- Do not suffer damage or deformation

- Installation and protection tube makes the probe suitable for high dust flue gas

 

Installation and Protection Tube

- The MiniProbe can be equipped with a rugged AISI protection tube with an integral filter to ensure:

- Effective protection from dust & abrasion

- No direct sticking of dirty material on the sensor

- Easier installation

 

Easy to Use

- Direct insertion into the duct or pipe

- Possibility to verify the calibration without removing the probe from process

 

European Compliance

- Low Voltage Directive 2014/35/EU

- EMC Directive 2014/30/EU

 

SIL 2

MiniProbe M7873 is optionally available SIL2 compliant in accordance to normative IEC/EN 61508 : 2010 (parts 1 to 7)

 

Spezifikation

Probe

Accuracy

0.1% O2 below 5% or 2% of reading above 5%

Repeatability

± 1% of reading (short term)

Output Resolution

0.01% O2

Response Time

Sensor: 0.1 sec. ; Overall system < 5 sec.

Flue Gas Temperature

up to 700°C (on request up to 800°C)

Insertion Length

100 / 200 / 300 mm

Process Connection

3/4” NPT-F or 2” NPT-F with installation and protection tube

Ambient Temp. Influence

Probe: max ± 0.005% of reading per °C.

External head: max. 0.06% of reading per °C

External head: max. 0.06% of reading per °C

Atm. Pressure Influence

1% of reading per 1% change in ambient pressure.

Probe Head Protection

IP65

Head Temperature

-5°C…+55°C

Weight

Probe: 1 Kg. ; Installation tube: 1 Kg.

Wiring Connections

N°2 cable glands for cables max. 13 mm and inner terminal strip

Pneumatic Connections

Calibration inlet: 1/8” NPT-F

Measuring Principle

Zirconium Oxide (Zirconia). Micro-pod sensor technology with no need of reference air

Humidity

0….90% non-condensing

Analog Output

1 x 4-20 mA linear output proportional to range; max. load 500 Ω (or 350 Ω with galvanically insulated module) or logarithmic 50 mV/decade *

Ranges

0-5 / 0-10 / 0-25% O2 (to select at order)

Diagnostic NV Logical Output (non-valid)

Logical Non Valid output from relay free contact. Normally supplied in fail safe condition (triggered relay and closed contact if not in alarm). Can be modified in field **

Power Supply

24 VAC ± 10%, 50/60 Hz, 50 VA

 

*Output from probe when connected to a remote ADEV control unit

**Mandatory for probe SIL2 compliant

 

Control Unit

ADV222 specifications (common to all versions)

Analog Inputs

2 x isolated.

Analog Outputs

2 x isolated

Output Resolution

better than 1x10.000 of FS

Relays

N°2 relays SPDT, 230 VAC, nominal 2A (max 4A) ***

Power Supply

8...28 VDC ; 9...24 VAC

Ranges

0-25% O2 ****

Operative Temperature

-20°C…+70°C

Humidity

0….90% non condensing

Led

Power supply (blue) - Cumulative inputs overload (red) - TX/RX (yellow/amber)

Serial Interface

RS485 2-wire (Protocol ModBus-RTU)

Line Impedance

120 ohm

Termination Type

External

Max Speed

57600bps

Max No. of Nodes

32

Protection

IP20

Weight

900 gr.

Connections

Removable screw terminals pace 5,08 mm

Conductor Section

Max. 2,5 mmq

Mounting

DIN rail

 

***Threshold to be selected at order (factory set) or settable in field by PC with ADEV Easy Configurator or by display if ADbox or ADcaseM are selected

****Default range factory set. Modifiable on request at order on customer specification or by PC with ADEV Easy Configurator

 

Supplementary ADbox Specification

 

Protection

IP55

Weight

8 Kg.

Dimensions

400 x 300 x 150 mm

Display

LCD 2.42” OLED. Resolution0.01%

Cable Entrance (bottom)

N°4 cable glands PG 13 / 9 / 7

 

 

Supplementary ADcase Specification

 

Protection

IP55

Weight

10 Kg.

Dimensions

400 x 300 x 150 mm

Display

LCD 2.42” OLED. Resolution0.01%

Cable Entrance (bottom)

N°4 cable glands PG 13 / 9 / 7

Pneumatic Connections

Calibration air inlets: 1/8” NPT-F

Configurations

ADcaseM-1: Pressure reducer and manual valve

 

ADcaseM-2: Pressure reducer and electro valve

Weitere Infos

Applications

Boilers using any type of fuel: Natural gas, LPG, light oils, heavy oils, diesel and biomass

 

- Biomass Plants

- Furnaces

- Low Temperature Incinerators

- Biological Muds Dryers (safety)

- H2O measurement in drying processes: Textile, Pulp&Paper, Tissue, Wood, Concrete

- Other combustion processes where flue gas is within temperatures limits (within 700°C)

 

 

Sampling System

MiniProbe M7873 is also available with bypass cell in SS316 for extractive applications.

Measuring Principle

The measuring principle on which the analysis is based is linked to the use of Zirconium oxide which, at high temperatures, can behave like a solid state electrolyte, developing an electromotive force on two electrodes placed in contact with different O2 concentrations (partial pressures), proportional to the temperature in Kelvin degrees (°K) and the logarithm of the ratio between the two pressures PO2’ and PO2” in accordance with Nernst’s well-know ratio:

 

E = RT / nF (Lg P02’ / P02“)

 

Where: R = Perfect gas constant (8,31 Joule/degree bulk)

F = Faraday’s constant

T = Absolute temperature in °Kelvin

n = 4

 

The inner sensing element is a based on a proprietary ADEV technology (micro-pod) and features a solid state reference that completely eliminate the need of a reference air flow, making the instrument very easy and practical to use in field.

 

- No reference air

- Sensor on the tip

- No gas circulation

Downloads

6801 Zirkoniumoxid Rauchgasanalysator
Gasanalyse
6801 Zirkoniumoxid Rauchgasanalysator
Designed to measure Oxygen in flue gas for combustion efficiency and fuel...
Details
7873 Zirkoniumoxid Rauchgasanalysator
Gasanalyse
7873 Zirkoniumoxid Rauchgasanalysator
Self-heated probe, designed to measure Oxygen in flue gas (up to 700°C)....
Details

Jobs