PVT-230 Probe/pH Probe Accessory TT-220 Probe/pH Probe Accessory PVT-230 Probe/pH Probe Accessory Process Viscometer for Viscosity Control of Inks, Paints and Coatings The PVT-230 Viscometer is used in printing and coating applications to maintain viscosity and pH by automatically adding the appropriate control agents. The instrument is available with an optional pH probe and control package which displays viscosity, pH, and temperature. The PVT230 is a rotational viscometer providing true dynamic viscosity measurements at defined shear rates. Optimizes product consistency and quality Provides measurement and control of viscosity Provides a permanent record for quality control when used with a recorder or PC Minimizes waste; automatic solvent additions reduce operating costs Ensures continuity of color value with minimum ink and solvent consumption in printing operations Maximizes press operating speeds Easy to start-up, operate and clean Senses/responds instantaneously Direct in-tank measurements Wetted parts are 300 series stainless steel The controller provides control of viscosity and pH, and displays process temperature (the RTD temperature probe is built into the pH sensor). Viscosity may be displayed in cP (mPa·s) or seconds (Zahn, ISO etc.). Process condition and set point are displayed for viscosity and pH. The controllers are equipped with relay output to operate solenoid valves which add appropriate control agents to the working fluid; current output may be provided as an option. Specifications Viscosity Range: 15 to 5000 cP Accuracy: ±1% of full scale Reproducibility: ±0.5% Temperature Range: -40°C to 100°C Output: mechanical relay or 4-20 mA Optional digital display of PVT-230 probe cover Optional measurement and control of pH, and temperature measuerment Back to Top TT-220 Probe/pH Probe Accessory For Open Tank Applications The TT-220 Process Viscometer is intended for open tank applications (5-20 gallon, 20-75 liters) requiring constant viscosity monitoring and or control. The TT-220 is often used in coatings or printing applications. The TT220 is a rotational coaxial cylinder (Searle) viscometer providing true dynamic viscosity measurements at defined shear rates. An optional sealed pH probe and controller (plus temperature sensor) is available. Integrates control of viscosity and pH (optional) Dual LED displays indicate process viscosity vs. set point and optionally pH vs. set point Optional RS485 computer interface Displays viscosity in cP, mPa·s, or orifice cup seconds Senses/responds continuously Control capability includes PID, auto-tune PID, or on/off User selectable high/low alarms Easy to start-up, operate, and clean Wetted parts are 300 series stainless steel Specifications Viscosity Range: 15 to 50,000 cP Accuracy: ±1% of full scale range Temperature Range: -40°C to 100°C Output: mechanical relay or 4-20 mA The TT-220 is also available with pH measurement/control for use in water based printing inks and coating materials which are sensitive to pH variation. In this case the instrument measures and controls pH in addition to viscosity. Specifications are as above with the addition of pH measurement and control capability. Back to Top