Introduction
There are various methods for continuous fabric dyeing as well as dye fixing. When dye is directly applied, steaming (heat treatment) is required. At present the pad-steam method is widely used for continuous dyeing. To ensure stable product quality, the humidity in the steamer is kept at a constant level.
The ZR802G Zirconia High Temperature Humidity Analyzer provides excellent maintainability as it does not require the use of a sampling system, and ensures stable measurement in high temperature environments. It has been well received in the marketplace and is widely used in humidity control applications.
Expected Benefits
- Maintains the quality of the discharge process
- Ensures stable, continuous humidity measurement
- Reduces operating costs
Process Overview
The pad-steam dyeing process uses vat, reactive, acid, disperse, and other types of dyes, and includes padding, drying, fixing, washing, and re-drying steps. After padding, the fabrics are forwarded to a steamer where the dye is fixed under conditions of constant temperature and humidity.
Solution Details
Field Data
Process conditions
| Measurement point | Steamer side |
|---|---|
| Sample gas component | Steam: 90 to 100%; air: remaining |
| Temperature | 70 to 110°C |
| Pressure | 10 to 30 kPa |
| Dust | None |
Measurement system
| Detector | ZR22G-☐☐☐-S-H-C-R-☐-E-A /SV |
|---|---|
| Converter | ZR802G-☐-☐-N-N /☐ |
| Standard gas unit | ZO21S-☐-E*A |
Utilities
| Rated voltage | 100 to 240 V AC |
|---|---|
| Rated frequency | 50/60 Hz |
| Power consumption | 330 VA (Max. 800 VA) |
Notes• It is best to install the detector vertically with the probe head pointing downward, but it can also be installed at any angle between 0° and 90° (horizontal installation shown right) with respect to the vertical.