Model
FI-C20D
Type
Probe type
Attachment
—
Detection principle
Refractive index (surface light source)
Rated concentration range
Brix: 0–20% (nD: 1.32500–1.37000)
Display method
Status indicator light
Display range
Brix: 0–25%
Supported fluids
Non-corrosive aqueous solutions (such as water-soluble coolants, mold release agents, etc.)*1
Supported fluid temperature
0–70°C 32–158°F (no freezing)
Connection diameter
—
Rated pressure range
Pressure resistance
Display resolution
Brix: 0.01/0.1% (default value: 0.1)
(nD: 0.00001)
Response time
1.0 s / 2.5 s / 5.0 s / 10.0 s / 30.0 s / 60.0 s / 120.0 s / 200.0 s
Measurement accuracy
Brix: ±0.2%*2*3 (nD: ±0.0003)
Concentration unit
Brix nD*4
Temperature measurement accuracy
±1.0°C 1.8°F*2
Power supply
Current consumption
25 mA or less
Environmental resistance
Enclosure rating
IP65/IP67 (IEC60529)
Ambient temperature
–10 to +60°C 14 to +140°F (no freezing)
Relative humidity
35–85% RH (no condensation)
Vibration resistance
10–500 Hz; Power spectral density: 0.816 G2/Hz; X, Y and Z directions
Shock resistance
100 m/s2 (approx. 10 G), 16 ms pulses, 1000 times each for X, Y and Z directions
Material
Liquid end materials
Sensor element: synthetic quartz
Body: aluminum die-cast (nickel chrome plating) / SUS304
Pipe: aluminum alloy (anodized); Gasket: FKM
Other materials
Indicator light: PPSU / TPU / PBT
Cable: PUR
Weight
Approx. 480 g 16.93 oz
*1 Use water as the solvent, and use materials that are soluble in water. If the particles are not water soluble, such as with slurry, the refractive index may not change.
*2 This is the guaranteed value from verification performed at KEYENCE inspection facilities. Measurement error may occur depending on the type, condition and temperature of the fluid used by the customer, as well as other factors.
*3 This is the value obtained when sucrose solution is used in a constant 20°C 68°F environment, and absolute error and repeatability is taken into account.
*4 When using solutions other than sucrose solutions, concentration can be adjusted via span adjustment.
