Yokogawa ZR22 & ZR402G - Single Channel Oxygen Analyzer System

Name: Yokogawa ZR22 & ZR402G - Single Channel Oxygen Analyzer System
Brand: YOKOGAWA
SKU: 177
Availability: InStock

Please call us ! 📞

Separate Type In Situ Zirconia Oxygen

Liquid-crystal touch panel display provides easy operation

Interactive model displays instructions to follow, including those for: settings, oxygen concentration trends, and calibration operations.

Digital communications features are provided as standard – this enables the analyzer to be maintenance-serviced remotely

Can measure either oxygen concentration or humidity with a single analyzer

Highly reliable measurements with trend-data graphs

The zirconia cell and heater assembly can be replaced in the field

Hotline: 0911.159.019

Email: sales@thietbidochuyendung.com

Description
Product Details

Yokogawa ZR402G & ZR22G / ZR22S - Separate Type In Situ Zirconia Oxygen

Technical
Explosionproof approval	ATEX: EEx d IIB + H2, Group II, Category 2GD, T2, T300°C FM/CSA: Class I, Division 1, Groups B, C and D, Class II/III, Division 1, Groups E, F and G, T2 IECEx: Ex d IIB + H2 T2, Ex tD A21 IP66 T300°C
Object of measurement	Oxygen Analyzer: Oxygen concentration in combustion exhaust gas and mixed gases (excluding inflammable gases) Humidity Analyzer: water vapor (in vol%) in mixed gases (air and water vapor) (Only non-explosionproof)
Measurement system	Display O2: 0 to 100 vol% O2 (digital display) H2O: 0 to 100 vol% H2O or 0 to 1,000 kg/kg, % relative humidity, dew point Output O2: Any setting in the range from 0 to 5 vol% O2 to 0 to 100 vol% O2 (1 vol% O2 scale) H2O: Any setting in the range from 0 to 25 vol% H2O to 0 to 100 vol% H2O or 0 to 0.200 kg/kg to 0 to 1,000 kg/kg
Process gas pressure	O2: -5 to +250 kpa (Non-explosionproof) H2O: -5 to +20 kpa
Sample gas temperature	General purpose use: 0 to 700 °C High temperature use: 0 to 1400 °C
Insertion length	General purpose use: 0.4, 0.7, 1.0, 1.5, 2.0, 2.5 or 3.0 meters High temperature use: 1.0 or 1.5 meters
Output signal	4 to 20 mA DC analog output and Digital Communication
Contact output Selectable: ZR202G; 2 points ZR402G; 4 points	(1) Abnormal, (2) High-high alarm, (3) High alarm, (4) Low-low alarm, (5) Low alarm, (6) Maintenance, (7) Calibration, (8) Range switching answer-back, (9) Warm-up, (10) Calibration-gas pressure decrease (answer-back of contact input), (11) Temperature high alarm, (12) Blowback start, (13) Flameout gas detection (answerback of contact input)
Alarm Related Items	Oxygen concentration high alarm/ high-high alarm limit values (vol% O2), Oxygen concentration low alarm/ low-low alarm limit values (vol% O2), Oxygen concentration alarm hysteresis (vol% O2), Oxygen concentration alarm detection, alarm delay (seconds)
Self-diagnosis	Abnormal cell, abnormal cell temperature (low/high), abnormal calibration, defective A/D converter, defective digital circuit
Calibration method	Manual, semi-auto or auto-matic calibration
Construction of detector	Waterproof construction, NEMA4X/IP66
Construction of converter	Dustproof and waterproof construction, NEMA4X/IP66
Ambient temperature	ZR22G: -20° to 150 °C; ZR402G: -20 to 55 °C; ZR202G: -20 to 55 °C

ZR402G Separate Type Converter

| Complete Operation Display

| Self-testing suggests countermeasures for problems

Interactive operations along with operation display.
A variety of display modes – enabling you to select the operation mode freely.
Back-lit LCD allows viewing even in the darkness
Error codes and details of errors can be checked in the field without the need to refer to the appropriate instruction manual.

If a problem occurs, the liquid-crystal display will provide an error code and the reason for the problem. This enables prompt and appropriate corrective action to be taken.

Zirconia Sensor - ZR22G / ZR22S

Yokogawa presents zirconia oxygen analyzers for saving energy and environmental protection

| Principle of Zirconia Oxygen Analyzer

OXY ZIRCONIA PRICIPLE.png

The principle of the zirconia oxygen analyzer is as follows: At high temperatures the zirconia element, as a solid electrolyte, is a conductor of oxygen ions. Platinum electrodes are attached to the interior and exterior of the zirconia. Heating the element allows different partial oxygen concentrations of gases to come into contact with the opposite side of the zirconia creating an oxygen concentration cell. In other words, oxygen molecules gain electrons to form oxygen ions with higher partial oxygen concentrations. These ions travel through the zirconia element to the other electrode. At that point, electrons are released to form oxygen molecules (refer to the chemical formula). The Nernst expression can be applied to calculate the force by measuring the electromotive force E generated between the two electrodes.
Electrode with high oxygen partial pressure: 0+4e 202- (Reference side) Electrode with low oxygen partial pressure: 202- 02+4e (Measuring side) Reactive electromotive force E(V) can be derived from Nemst's formula
R: Gas constant; T: Absolute temperature; n: 4; F: Faraday's constant; Px: Oxygen partial pressure of zirconia element on the measuring gas side(%); PA: Oxygen partial pressure of zirconia element on the reference gas side(%); Atmospheric air: 20.6(%); Instrument air: 21.0(%)
For the ZR22 cell, temperature is 750 C and the correspondingly reactive electromotive force
E = PX PA E=-50.74log -[mV] PX=PA 10- E 50.74

| Get a Long Service Life and Stable Operation with a Zirconia Sensor Sensor Replacement is Easy

ZIRCONIA LONG LIFE OXY SENSOR.png

A molecular bonding method completes installation of platinum. electrodes, and its inherent connection prevents separation of platinum from the zirconia element
A lead-less electrode design eliminates electrical disconnection.
Special coating protects the platinum and prevents the sensors from deteriorating or becoming damaged
No special tool is required for cell replacement. Whenever required, the cell is easily removed by removing four screws from the top of the probe. Down time ("from the time installation is started until it is completed") is minimized to approximately ten minutes. After the cell is replaced, the analyzer requires a zero and span calibration only once