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YOKOGAWA ZR402G Single Channel Oxygen Analyzer

YOKOGAWA ZR402G Single Channel Oxygen Analyzer

The YOKOGAWA ZR402G converter is equipped with an LCD touch screen which has various setting displays, a calibration display, oxygen concentration trend display, with easier operation and improvement of display functions. The converter is equipped with various standard functions such as measurement and calculation as well as maintenance functions including self-test.

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YOKOGAWA ZR402G Single Channel Oxygen Analyzer

The ZR22G/ZR402G Separate Type Zirconia Oxygen Analyzers have the following features:
• A general-purpose detector can directly measure gas of up to 700ºC. Moreover, when combined with the high-temperature probe adapter, it can measure gas of up to 1400ºC.
• For the Zirconia cell, which is a key component of zirconia oxygen analyzers, a zirconia element and platinum electrodes are molecularly bonded by a method developed by Yokogawa. Therefore, the zirconia sensor can deliver consistent measurements for a long period without the electrode being peeled off.
• The heater assembly used to heat up the zirconia cell is constructed so that it can be replaced in the field. Even if a wire in the heater breaks, the heater can be easily replaced in the field.
• The converter features a large liquid-crystal display that is easy to see and read.
• A high-resolution graphic display is available, and trend graph display of up to 150 min is possible.
• A touch panel is used for operations, allowing information to be easily read out and set up.
• Operations are performed interactively with the operation display, so the Instruction Manual is not needed in daily operations.
• During calibration, the sensor (cell) response time, internal resistance value, zero calibration factor, span collection factor, etc. are checked and the data are evaluated comprehensively.This allows the remaining life of the cell to be predicted.
• Two current outputs (4 – 20 mA) and four SPDT relay contact outputs are available. Measurement data, alarms, errors, etc. can be output.

Touch Panel Switch

The YOKOGAWA ZR402G uses a touch panel that can be operated by just touching the switch display. The switches displayed in this area and their functions vary depending on the panel display, allowing all switch operations. Figure 5.2 shows the types of switches and their functions.

MEASUREMENT OBJECTOxygen concentration in combustion exhaust gas and mixed gas
MEASUREMENT SYSTEMZirconium oxide sensor
MEASUREMENT RANGE0.01 to 100 vol% O2
OUTPUT SIGNAL4 to 20 mA DC, two points (ZR402G) (maximum load resistance 550Ω)
SETTING RANGEAny setting in the range of 0 – 5 vol%O2 to 0 – 100 vol%O2 (in 1 vol% O2), or partial range
DIGITAL COMMUNICATION (HART)250 to 550Ω, depending on number of field devices connected to the loop (multi-drop mode)
SAMPLE GAS PRESSURE-5 to +250 kPa (Pressure compensation option necessary over +5 kPa)
SAMPLE GAS TEMPERATURE0 to 700℃ (Probe only)
700 to 1871℃ (with 0.15m probe with JIS 5K 32 FF flange and ZR22P High Temperature Probe Adapter)
PROBE LENGTH0.15, 0.4, 0.7, 1.0, 1.5, 2.0, 2.5, 3.0, 3.6, 4.2, 4.8, 5.4 m
CONTACT OUTPUTFour points (one is fail-safe, normally open)
CONTACT INPUTTwo points
CALIBRATIONMethod; zero/span calibration
Calibration mode; automatic, semi-automatic and manual (with an LCD touchscreen)
CONSTRUCTION OF DETECTOR (ZR22G)Heater and thermocouple replaceable construction.
Non-explosion-proof. Equivalent to NEMA4X/IP66
CONSTRUCTION OF CONVERTER (ZR402G)Non-explosion-proof, outdoor installation, equivalent to NEMA4X/IP66
AMBIENT TEMPERATUREProbe (ZR22G): -20 to 150℃
Converter (ZR402G): -20 to 55℃)
REFERENCE GAS SYSTEMInstrument Air (preferred): 50 kPa (200 kPa with check valve) + the pressure inside the furnace; Approx. 1 Nl/min consumptionNatural convection
POWER SUPPLY85 to 264 V AC; 45 to 66 Hz

Product manuals

#FileDescriptionDate addedFile sizeDownloads
1 pdf Yokogawa Oxygen Analyzer Module ZR22G-ZR402G Drawings Yokogawa Oxygen Analyzer Module ZR22G/ZR402G Drawings
12/16/2017 14:53781 KB103
2 pdf ZR22G ZR402G ZR22G ZR402G
10/09/2017 15:45629 KB213
3 jpg zr402G_model_number YOKOGAWA Oxygen Analyzer ZR402G
10/09/2019 22:23379 KB6

The YOKOGAWA ZR402G converter is equipped with an LCD touch screen which has various setting displays, a calibration display, oxygen concentration trend display, with easier operation and improvement of display functions. The converter is equipped with various standard functions such as measurement and calculation as well as maintenance functions including self-test.

Performance

REPEATABILITY±0.5% Maximum value of set range
LINEARITY±1% Maximum value of set range
DRIFT±2% Maximum value of set range/month
RESPONSE TIME (T90)90% response within 5 sec (60 sec for explosion-proof ZR22S)

Separate type
General Parpose Zirconia Oxygen / High Temperature Humidity Analyzer, Converter


*1 For humidity measurements, be sure to specify /HS options.

*2 Specify either /SCT or /PT option code.

*3 Sun shield hood is still effective even if scratched.

*4 Output signal limits: 3.8 to 20.5 mA. Specify either /C2 or /C3 option code.(Note) If AC line voltage is 125 V AC or greater, or in theEEC, the ZO21D cannot be used with the ZR402G.

Part number/Model number selection example

No.Part number
1ZR402G-T-T-E-A
2ZR402G-T-Z-Z-A/HS
3ZR402G-M-E-E-A/SCT
4ZR402G-T-E-E-A/Z
5ZR402G-T-E-E-A/H/SCT
6ZR402G-P-E-E-A/SCT
7ZR402G-M-E-E-A
8ZR402G-T-E-E-A/SCT
9ZR402G-T-E-E-A / SCT
10ZR402G-T-E-E-A
11ZR402G-T-E-E-A/SCT/H
12ZR402G-C-E-A
13ZR402G-P-E-E A/SCT/C3
14ZR402G-T-E-C-A
15ZR402G-T-E-C-A/S1
16ZR402G-M-E-E-A/SCT/C3
17ZR402G-P-E-E-A
18ZR402G-T-E-A/SCT
19ZR402G M-E-E-A/H/SCT

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