Koehler LKV5000 series kinematic viscosity baths with optical flow detection system provides automatic viscosity measurements of petroleum and petrochemical products. Includes communication and power ports for each optical detection assembly and can utilize up to four optical assemblies. Optical sensors and viscometer tubes to be ordered separately. The bath provides improvements in operating features, safety and cabinetry. Advanced temperature control circuitry includes microprocessor PID design and two decimal calibration offset. Simple pushbutton controls and dual digital displays permit easy setting and monitoring of bath temperature. The bath accommodates four glass capillary viscometers using 2" (51mm) round holders (rectangular ports are available on special order). The bath medium is contained in a clear, evacuated Dewar flask and glare-free fluorescent backlighting provides excellent visibility when working with the viscometers.
The LKV5000 operates at temperatures from ambient to -30 °C (-22 °F) or ambient to -70 °C (-94 °C), model dependent, exceeding ASTM temperature control accuracy and uniformity requirements throughout the operating range. Air-cooled hermetic compressors provide efficient operation with the use of CFC-free refrigerants.
The insulated steel cabinet has an attractive polyester-epoxy finish and is mounted on adjustable leveling feet. Chemical resistant working (top) surface has four round ports for 2" (51mm) viscometer holders and one port for a thermometer holder. The front viewing window provides clear, distortion-free visibility. The microprocessor controller incorporates circuitry that interrupts power to the heater in the event of an over-temperature condition or disconnection of the primary probe. A redundant adjustable controller and sensor probe provide added over-temperature protection, and an integrated low liquid level sensor cuts power to the heaters if the bath liquid is not filled to the proper level or falls below during operation. Both over-temperature and low liquid level circuits will latch and prevent further operation of the bath until the fault is removed.
Conforms to the specifications of:
ASTM D445, D2170, D6074, D6158; IP 71, 319; ISO 3104; DIN 51550; FTM 791-305; NF T 60-100
Testing Capacity: Four (4) glass capillary viscometers
Viscometer Ports: Four (4) round 2" (51 mm) ports
Bath Dimensions: 9 ½" dia. x 12" depth (24 cm dia. x 30 cm)
Bath Capacity: 3.7 gal (14 L)
Temperature Range:
- K22754-OS: 15 °C to -30 °C (59 °F to -22 °F)
- K22758-OS: 15 °C to -30 °C (59 °F to -22 °F)
- K22752-OS: 15 °C to -70 °C (59 °F to -94 °F)
- K22757-OS: 15 °C to -70 °C (59 °F to -94 °F)
Temperature Control Display: 0.1 °C / 0.1 °F resolution, calibrate to 0.01 °C / 0.01 °F
Control accuracy and uniformity: Exceeds ASTM requirements throughout the operating range