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eRev. [Major Version]1.01.0 8/9/2023
KrosFlo® KR2i Real-Time Process Management (RPM™) System
4. System Specifications
The tables below outline the performance specifications, electrical requirements, physical attributes, environmental considerations,
and compliance information of the major system components. Tubing specifications can be found in section 8.2.
Table 3. Performance Specifications
Table 4. Electrical Input Specifications
Specification Value
KR2i TFF System
Pump Speed Range 0.1 to 600 rpm
Maximum torque load—Starting 400 oz-in (29 kg-cm)
Maximum torque load—Running Up to 180 oz-in (13 kg-cm)
Speed regulation
Line ±0.1% FS
Load ±0.1% FS
Drift ±0.1% FS
Display 128 x 64 LCD w/ LED Backlight
Pressure Sensor Limits -9.99 to 75 psi
FlowVPX System
Qualification Slope Range 0.10 to 46 Au/mm using NIST-Traceable Slope Standards
Qualification Slope Repeatability ±2%
Maximum Pathlength 5.000 mm
Minimum Pathlength Step 0.001 mm
Spectroscopic Engine Agilent Cary 60 Spectrophotometer
Spectrophotometer Wavelength Range 190–1100 nm
KONDUiT Conductivity, Temperature, and UV Monitor
Conductivity Range 0.1 to 100 mS/cm
Conductivity Accuracy
0.1 to 2 mS/cm: ± 0.1 mS/cm
2 to 50 mS/cm: ±5% of reading
50 to 100 mS/cm: ±5% of reading (typical)
Temperature Range 0–70°C
Temperature Accuracy Better than ±0.2°C (typically better than ±0.1°C)
UV Sensor Output signal
4–20 mA sourcing with 400 Ω maximum at 24 VDC; scaled to 0–2 AU with
repeatability of 1% of full scale (0.02 AU)
UV Sensor Typical Response Time 1 second
UV Sensor Maximum Zero Shift <2% of full scale (<0.040 AU)
UV Sensor Long-term Output Drift <5% per month of full scale (<0.100 AU)
Specification Value
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