Paper | Board | Tissue – Quality Control System
Paper Thickness Gauge BTG 3000PP
The BTG 3000PP is an online gauging and quality control system designed for paper, board and tissue production. It continuously measures important production parameters such as basis weight, moisture, ash and caliper, helping operators maintain consistent quality and reduce material waste.
JASCH has more than 28 years of experience in measurement, process control and automation for the paper, board and tissue industry.
The BTG 3000PP provides continuous online measurement of key paper quality parameters and helps operators identify deviations from target values during production. The system can also be integrated with process controls to make corrections and improve machine performance.
It is designed to provide a practical and cost-effective solution for paper machines where reliable measurement and control are required.
JASCH systems are built for long-term operation, with upgrade options available to bring newer EnvisionUltra and sensor technologies to existing installations.
Industry Processes
The BTG 3000PP can be used across different areas of paper production,
including:
- Paper making
- Tissue manufacturing
- Board manufacturing
- Substrate coating
- Laminating
- Impregnating
Measurement & Control
The system can be configured for:
- Basis weight
- Moisture
- Ash
- Thickness / caliper
- CD Control of GSM, Caliper and Moisture
- Density
- Layer discrimination
- Porosity measurement
- Machine Direction control
- Roll control
- Process integration
- SPOT-Track same-spot control
- Vision surface inspection
- Colour interpretation
- Data history
- Process analysis
- Remote connectivity
- Non-contact measurement
- High-speed scanning
- Air-gap temperature compensation
- Automatic calibration
- Automatic web edge detection
- Precise O-frame construction
- Comprehensive production reports
- Independent control of basis weight, moisture and ash
- Dead-time compensation using Smith Compensator
- Feed-forward compensation
- Dryer shutdown in case of paper break
- Steam optimization
- Jet/Wire ratio control
- Automatic grade change
The BTG 3000PP can be integrated with control systems to provide
automatic process corrections.
Machine Direction Control
Machine Direction control can be used for:
- Basis weight
- Moisture
- Ash
Cross Direction Control
Cross Direction control can be incorporated for:
- Basis weight
- Moisture
- Caliper
Basis Weight Sensor — Beta
The Beta transmission sensor measures the basis weight of paper and
board. The measurement is based on the attenuation of Beta radiation as
it passes through the material.
| Specification | Details |
|---|---|
| Radioisotope | Kr-85, 200 mCi / Sr-90, 50 mCi |
| Measurement Range | 10–1000 g/m² / 30–5000 g/m² |
| Accuracy & Repeatability | ±0.15% or 0.15 GSM, whichever is greater |
| Sampling Time | 10 ms |
| Air Gap | 10 mm – 30 mm |
| Operating Temperature | 0–70°C |
| Detector | Ionization chamber |
| Measuring Spot Size | 12 mm |
| Special Feature | Insensitive to paper formation |
Moisture Sensor — NIR / Microwave
Moisture measurement helps operators maintain the required water content
in the paper and can also support production optimization.
Two sensor options are available depending on the application and GSM
range.
Near Infrared Sensor
Suitable mainly for fine paper and lighter paper grades.
| Specification | Details |
|---|---|
| Measurement Range | 0–15% |
| Accuracy & Repeatability | ±0.1% |
| Spot Size | 20 mm circular |
| Operating Temperature | 0–70°C |
| Sampling Time | 10 ms |
| Special Features | Scattering compensation, carbon black compensation |
Microwave Sensor
Suitable for higher GSM applications and board products.
| Specification | Details |
|---|---|
| Measurement Range | Up to 100 GSM water |
| Sampling Frequency | 100 samples/second |
| Measuring Gap | 10 mm |
| Measuring Area | 50 × 50 mm |
| Operating Temperature | 0–70°C |
| Special Features | Insensitive to ink, surface structure and common fillers |
Ash Sensor — X-Ray
The X-ray sensor measures ash content by detecting the absorption of
X-ray radiation by inorganic materials such as clay, calcium carbonate
and titanium dioxide.
| Specification | Details |
|---|---|
| X-Ray Source | 2 W, 10 kV max |
| Measurement Range | 10–500 GSM |
| Accuracy & Repeatability | ±0.4% |
| Air Gap | 10 mm |
| Sampling Time | 10 ms |
| Operating Temperature | 0–70°C |
| Detector | Ionization chamber |
| Measuring Spot Size | 12 mm |
Caliper Sensor
The caliper sensor measures paper thickness using electromagnetic
induction. As the thickness of the paper changes, the distance between
the sensing components changes and the system detects this variation.
| Specification | Details |
|---|---|
| Measurement Range | 0.02–1.00 mm |
| Repeatability | 0.5 micron |
| Dynamic Correlation | 1.5 micron |
| Long-Term Stability | 1.0 micron |
| Sampling Time | 10 ms |
Let's find the right gauging solution.
Talk to our team about your production requirements and application.