Features

• Piezoelectric ceramic drives the system instead of motor or electromagnetics
• No maintenance required
• Unprecedented accuracy and reliability for in-line systems
• Simple installation in any direction to a pipeline or tank
• Near-instantaneous measurements for precise process control
• Sensor is not affected by process noise or vibration

Characteristics

FVM-80A

The FVM-80A shield-type viscometer is a torsion-balanced, rotary oscillation viscometer driven by piezoelectric ceramics. This patented technology measures product viscosity via an angular-acceleration sensor at a high resolution (0.01 mPa.s for low viscosity range). Viscosity is reported within 1% accuracy of actual reading, not to full scale like most in-line systems.

The FVM sensor is hermetically sealed, manufactured of 316 SS, and may be installed directly to a process pipeline or tank in any direction. The sensor portion that comes in direct contact with flowing liquid is of a solid structure that requires no maintenance. The system contains no moving parts, seals or drive motors, making Viscomate the most reliable process viscometer.

The Viscomate control unit indicates viscosity and temperature in a LED display, and has a standard RS 232C port and 4-20mA output for each range. Options for the standard type viscometer include low or high viscosity range, teflon coated probe, Guard, etc.

FVM80A-EX

The FVM80A-EX explosion-proof system is a specialized version of CBC's torsion-balanced, rotary oscillation viscometer. Though the unit is designed for extremely harsh environments, it performs to the same stringent standards as its predecessor, the FVM-80A. The system is certified for use in Class1, Div 1 B,C,D areas by Factory Mutual, 04ATEX 2045X by KEMA and ExdIIB+H2T6 by Technology Institution of Industrial Safety.

The unit is driven by piezoelectric ceramics with a piezoelectric angular-acceleration sensor. which measures product viscosity at a high resolution (0.01 mPa.s for low viscosity range) and reports results to 1% accuracy of actual reading. All are hermetically sealed, manufactured of 316 SS, and may be installed directly to a process pipeline or tank in any direction. The system contains no moving parts, seals or drive motors, making Viscomate the most reliable process viscometer.

The FVM80A-EX master control unit indicates viscosity and temperature in a LED display, and has a standard RS 232C port and 4-20mA output for each channel. Users have the option of a single or eight channel controller, each designed with a slave controller interface. Master and slave controllers are connected via a standard RS485 line (two line, semi-duplex, isolated signal) of up to 1.2km in length. Standard options include low or high viscosity range, and same as FVM-80A's.

FVM80A-EXHT

The FVM80A-EXHT pressure-resistant, explosion-proof system is a high temperature version up to 260°C, i.e 500°F as a stand of CBC's torsion-balanced, rotary oscillation viscometer. Designed for the most demanding industrial environments, the unit performs to the same stringent standards as its predecessor, the FVM80A. This system is certified for use in Class1 Div1 B,C,D areas by Factory Mutual, 04ATEX 2045X by KEMA and ExdIIB+H2T6 by Technology Institution of Industrial Safety.

The unit is driven by piezoelectric ceramics with a piezoelectric angular-acceleration sensor. which measures product viscosity at a high resolution (0.01 mPa.s for low viscosity range) and reports results to 1% accuracy of actual reading. All models of the FVM sensor are hermetically sealed, manufactured of 316 SS, and may be installed directly to a process pipeline or tank in any direction. The system contains no moving parts, seals or drive motors, making it one of the most reliable viscometers available.

The FVM80A-EXHT master control unit indicates viscosity and temperature in a LED display, and has a standard RS 232C port and 4-20mA output for each channel. Users have the option of a single or eight channel controller, each designed with a slave controller interface. Master and slave controllers are connected via a standard RS485 line (two line, semi-duplex, isolated signal) of up to 1.2km in length. Standard options include low or high viscosity range.

Usage

Applications are

• Decentralization and Disporsion
• Polymerization
• Slurry, Ink

Structure & Principle

• Our viscometers are torsional oscillation, constant shear stress systems driven by a piezoelectric ceramic source as actuator.
  Our instruments accurately measure viscosity by sensing a change in oscillation amplitude of a luquid-immersed detector by angular-acceleration sensor, based on constant input voltge, Angular acceleration of the detector is measured, and calibrated to viscosity..
• The FVM probe is a balanced structure in terms of inertia mass and vibration. The upper portion, comprised of angular-acceeleration nsensor and actuator piezo, and innertia mass, vibrates in exact opposite angular momentum to the lower detector. A fixed node in the middle of the torsion bar (pattented) is the point where torsion desplacement is zero, because it is the middle of the oscillation rod having the same mass on both ends.
  This node is welded to probe housing with a short pipe and absorbs any outside noise or vibration common to process systems; The weld further serves to hermetically seal the structure.
• A Phase Locked Loop (PLL) circuit maintains instrument resonant frequenc of 1 KHZ; the detector oscillation amplitude with no resistance is 1 µm.The probe vibrates in roatry oscillation, which allows flexible installation of the sensor to a process system with any flow angle against the detector acceptable.
  Viscosity data will not fluctuate based on location or direction of mounting).

Options

FVM-80A series Installation Examples.

Composition of explosion proof

Specifications

TYPE		FVM80A-ST	FVM80A-EX	FVM80A-EXHT
Measuring Method		Torsional Oscillation
Measuring Range	L	0.50-999 mPa.s
	M	10.0-5,000 mPa.s
	H	500 - 20,000 mPa.s	0.50 - 20.0 Pa.s
Accuracy		±1% (Reading)
Reproducibility		±0.5%
Temperature Range		0 to 70°C	0 to 70°C	0 to 260°C (Standard)
Display		LED 3-digit display (4-digit optional)
Interface		RS-232C
Output		Digital output (RS232C); Analog output 4 to 20 mA (each range)
Power Source		AC110-240V, 50/60Hz
Dimensions (mm)		Probe: 70 x 165 Controller: 115 x 200 x 330	Probe: 90 x 229 Slave controller: 156 x 320 x 183 Master controller: 95 x 200 x 330	Probe: 110 x 349 Slave controller: 156 x 320 x 183 Master controller: 95 x 200 x 330
Weight		Probe: 1.2 kg Controller: 2.5 kg	Probe: 5kg Slave controller: 8.5kg Master controller: 3kg	Probe: 9kg Slave controller: 8.5kg Master controller: 3kg
Components		Connecting Cable	Probe	Probe
		Probe (ST)	Probe (PEXG)	Probe (PEXH)
		Power Cable	Power cable	Power cable