Yokogawa ZR802G|03|-n-n Zirconia Oxygen Humidity Analyzer

The Yokogawa ZR802G is an intelligent online zirconia oxygen content monitoring instrument from Yokogawa Electric. The following is the specific introduction:

The technical parameters of ZR802G|03|-n -n are basically the same as those of the overall ZR802G series, as follows:

Measurement object

Oxygen analyzer: Oxygen concentration in combustion exhaust gas and mixed gas.

Humidity analyzer: Water vapor content (volume percentage) in mixed gas (air and water vapor).

Measurement range

O₂: 0.01-100 vol%

H₂O: 0-100 vol%

Mixing ratio: 0-1.000 kg/kg

Digital communication

- HART 7

- Ethernet (Modbus TCP)

- RS-485 (Modbus RTU)

Accuracy

Repeatability

O₂: ±0.5%FS in the range of 0-5 vol%; ±1%FS in the range of 0-25 vol% and above to 0-100 vol%.

H₂O: ±1 vol% H₂O for sample pressure 2 kPa or less.

Linearity

O₂: ±1%FS in 0-5 vol% range; ±3%FS in 0-25 vol% to 0-50 vol% range; ±5%FS in 0-50 vol% and above to 0-100 vol%.

H₂O: ±2 vol% H₂O within ±0.49 kPa of sample pressure; ±3 vol% H₂O for sample pressure 2 kPa or less.

Drift

O₂: Both zero and span drift are ±2%FS/month.

H₂O: Both zero and span drift are ±3 vol% H₂O/month.

Response Time: 90% response in 5 seconds.

Sample gas temperature: 0-700°C (probe only); 700-1400°C (with high temperature probe adapter)

Sample gas pressure: -5-250kPa

Output signal: 4-20mADC

Material in contact with gas: SUS316 (JIS), zirconia, SUS304 (JIS) (flange), HastelloyB (Inconel600, 601)

Structure: Heater and thermocouple replaceable structure

Power supply voltage: Rated 100-240VAC, acceptable range 85-264VAC

Power supply frequency: Rated 50/60HZ, acceptable range 45-66Hz

Ambient temperature: Separate transmitter and integrated type -20-55°C, separate probe -20-150°C

The Yokogawa ZR802G is a model in its own right, with subdivided models underneath. Depending on the configuration options, it can be subdivided into the following models:

**By converter interface**: ZR802G|01|-t-t 1/2 NPT, indicating a converter with a t1/2 NPT interface.

**By digital communication method**: ZR802G|02|-t

- ZR802G|02|-h-h HART, indicates that the HART communication protocol is used.

- ZR802G|02|-e-e HART+Modbus TCP, indicates that HART and Modbus TCP communication protocols are supported.

- ZR802G|02|-m-m HART+Modbus RTU, indicates support for HART and Modbus RTU communication protocols.

**Press other options**

- ZR802G|03|-n-n always-n and ZR802G|04|-n-n always-n, the exact meaning is not clear at this time, but it is presumed to be related to some default configurations or specific functions.

- ZR802G|001|/sct /sct indicates an analyzer with a stainless steel label plate.

- ZR802G|005|/rc/rc indicates an analyzer with a ruggedized coating (epoxy + polyurethane coating).

- ZR802G|006|/br/br indicates a wall bracket for ZR402G replacement.