Complete Photometer Analytical System
The visual ASTM color test is often used for field examination control purposes because it is an easy, rapid determination of product quality or contamination before doing a full evaluation. ASTM color (references ASTM D1500, ASTM D6045) is primarily used in characterizing high chroma or more colorful petroleum products. These fuels include lubricating oils, heating oils, diesel fuels, and petroleum waxes. The ASTM- scale shows a range of 0 ASTM (no color) up to 8 ASTM (dark / nearly black color). Products with low color less than 0.5 ASTM are often measured by using the Saybolt color (ASTM D-156). Both of these ASTM methods are off-line manual laboratory evaluations.
These test require an observer to compare the color of a product to a known standard, and then judge the “color”. Using a Guided Wave ASTM Color Analyzer system automates the color measurement within the process, ensuring the most accurate product quality standard during manufacturing. The analyzer eliminates the visual judgement of a technician and delivers online real-time process control information to the process operators.
System Configuration
The Guided Wave ASTM Color Analyzer system is a complete solution. The “ready-to-go” analytical system includes:
- Analyzer – ClearView® db filter photometer technology
- Fiber optic cables
- Sample interface – insertion probe or flow cell
- Control software and ASTM application calibration
- Accurate, Real-time Reliable Results
Ideal for Measuring ASTM Color (ASTM D1500, ASTM D1524)
OUR GLOBAL SOLUTIONS DELIVER
- Improved reliability
- Low cost of ownership
- Meet compliance requirements
- Backed by global service and support
The ASTM Analyzer system utilizes a Guided Wave multi-wavelength ClearView db filter photometer analyzer platform. It may be configured for either one (1) or two (2) independent sample monitoring points. The ClearView db analyzer is configured with application appropriate wavelengths to measure the ASTM color of the sample. The analyzer employs a dual-beam design – meaning; the system has an continual internal optical reference check that allows it to self-compensate for signal variation due to non-sample conditions. This ultimately provides the system with long term stability. The final product is a total ASTM Color System that measures the color variation without interference from other factors.
Figure 1 shows an initial calibration chart showing the measured values as compared to laboratory standard values.
Complete ASTM Color Analyzer System
Unique dual beam optics – for long term, stable operation. Up to two (2) independent measurement points – for added analytical flexibility at reduced cost per point
High efficiency yet rugged fiber optics – analyzer electronics can be located away from a hazardous sample point. In-door touch screen or Ethernet (Modbus TCP) – easy local or remote analyzer operation and control. Analytical calculations are all encoded in the software – answers and alarms are clearly reported.
The Smart Choice
Guided Wave’s ASTM Color Analyzer system delivers accurate, real-time process measurement results. Its linearity and repeatability, as well as its low maintenance requirements make it a cost effective, smart choice to help optimize production, improve yields, ensure consistent product quality and enhance profitability.
Options for a Custom Solution
Another advantage of the ASTM Analyzer system is that is can be customized in many ways. For more information about specifications and analyzer operations see ClearView db.
Specifications: ASTM Color Analyzer – Photometer
| PRODUCT | ASTM Color 1064 |
|---|---|
| Channels | Up to 2 (two) sample channels and optional turbidity monitoring |
| Dual Beam / Analyzer Technology | Fiber optic dual-beam ClearView db photometer (see also document #1033) |
| Light Source /Life Tungsten Halogen | Tungsten-Halogen, >4000 hours typical |
| Fiber Optic Cable Connectors | SMA 905 |
| Communications | Ethernet (TCP Modbus) standard |
| Photometric Noise | <50 µAU 450-2100 nm 1 minute rms |
| Enclosure Options | General Purpose NEMA 4 unclassified Z-Purge, NEMA 4x, CI D2 X-Proof, ICEEx, ATEX, CI D1 |
| Environmental | 0 – 45°C, 0 – 90%, sun and rain sheltered |
| Photometric Drift | <500 µAU rms/ °C |
| Response Time | 1 second, minimum. User settable |
| Outputs (analog) | Up to 6 for a one channel unit Up to 4 per channel for a two channel unit 4 – 20 mA, customer powered |
| Outputs (discreet) | Up to 6 for a 1 channel unit Up to 4 per channel for a 2 channel unit contact closures |
| Inputs (analog) | 4 (optional) 4 – 20 mA, isolated grounds |
| Local Display | LCD touch screen, color QVGA |
| Power | 24 VDC, 3 A; 72 watts |
| Measurement Accuracy | Complies with ASTM methods D1500, D1524 |
| Measurement Range | 0.5 to 7 ASTM units (pathlength can be optimized to increase sensitivity) |
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