COA 127 Specifications
Analytical method: spark OES (SFE graphite electrode–ASTM D8315 and similar to ASTM D6595)
Wear metal elements: 0-500 ppm (w/w) Approximately. Al, Cu, Fe, and so on
Oil & grease additive elements: 0-6000 ppm (w/w) Approximately. Ca, P, Zn, Mg, B, Li, Mo, Ba, V
Time of analysis: 2.8 minutes (maximum)
Sample volume required: <1.5ml
Sample viscosity: unlimited
Maximum detectable wear metal debris size: >200 um
Electrodes:
Upper : regular rod graphite electrode
Lower: flat graphite electrode
Calibration standards (ppm by weight):
21 or 21+K (50 or 100);
MA4 (Ca 5000, P, Mg, Zn: 1600);
Li: 1000 ppm, user de-selectable on User Interface;
Blank oil.
Note: calibration of more elements is available upon request
Main spectrometer resolution: 0.1 nm (FWHM)
Power supply: 97-230 VAC/40-70Hz, 14 Amps
Operational temperature: 3-27 °C
Operational humidity: 0-80% non-condensing
Operational altitude: up to 5000 meters above sea
Computer OS: MS Windows XP or newer
Dimensions and Weight:
COA Model 127: 13” x 13” x 11”, 19lbs or 34cm x 33cm x 29cm, 8.6kg
COA Model 126: 22” x 19” x 19”, 36lbs.or 48cm x 48cm x 48cm, 17kg
Consumables
Electrodes:
Upper: regular rod graphite electrode for RDE, max length allowed: 150 mm
Lower: flat graphite electrode
Calibration standards (ppm by weight):
1) 21 or 21+K (50 or 100);
2) MA4 (Ca 5000, P, Mg, Zn: 1600);
3) Blank oil.
4) (Optional) Li: 1000 ppm, user de-selectable on User Interface;
Note1: all standard oils are available from common vendors
http://www.scpscience.com: stardard oil and rod electrodes
http://www.lgcstandards.com: stardard oil only
Note2: calibration of more elements is available upon request
Note3: each calibration consumes about 1 ml standard oil or less
Running Cost per Sample
Each sample or calibration consumes a flat electrode. Currently, the flat electrode is shipped from China. With current currency exchange rate, the price is $0.89 ea, plus shipping and handling fees.
The rod electrode is consumed as in a regular RDE oil analyzer.
Consumption of standard oil:
Made by cutting-edge technology, COA oil and grease analyzer is a very stable analyzer. Though users can run routine calibrations as recommended, the calibrations do not affect results too much. Thus many users do not run daily calibrations, which cuts the cost on consumables.
In general, the cost of testing a sample is about $2, also depending sample volume.