Home > FLO-CAL© System Specifications

FLO-CAL© System Specifications

General Construction

  • Stainless steel cart with 4 casters (2 fixed, 2 swivel) and handle for mobility
  • Work surface with small vise and fluid inlet / outlet ports
  • Removable FLO-CAL© instrument with view angle adjustment
  • Splash proof keyboard / mouse on a sliding shelf
  • Open frame, lower shelf for mounting the automatic flow manifold system
  • Removable liquid flow manifold system for ease of shipping for off-site calibration
  • Protective bumper around the base of the cart
  • Stainless steel tubing and thermal insulation

Approximate Dimensions: 30” depth (including protective bumper) x 60” length (including handle and electrical cord reel) x 63” height (38” height of cart at work surface).

Power Source: Nominal 120 VAC, 6-Hz, 10 Amps (if pump module not included).

Gas-Cal Pressure
GAS-CAL© Instrument with Built-in Pressure Standard

FLO-CAL© Instrument: (minimum or similar specifications).

  • Ergonomic 19” rack mounted enclosure, can be removed
  • Rugged industrial PC based system, with 11” Active Color Matrix LCD display
  • Industrial keyboard / mouse mounted inside sliding drawer
  • Ram, CD and FD drive, Network Card, printer port, serial port, Microsoft Windows 98™ or later


FLO-CAL© Instrument Data Acquisition and Control Systems

Venturi Nozzle
Flow Standards — Venturi Nozzle & Intelligent Gas Flow Sensor

Flow Meter Signal Conditioning and Timing System:

  • Flow meter standards and unit under test inputs compatible with turbine, quadrature encoder (TTL), modulated carrier, and analog signal flow meters.
  • Total of 5 frequency input channels through a programmable FLO-CAL conditioning board 4 for flow standards (or 3 flow std. and 1 density std.), 1 for UUT.
  • Input frequency range: 10 to 30,000 pulses per second.
  • Input signal ranges: multiple standards, including 0 to 5 VDC, 0 to 10 VDC, 0 to 20 mA, and 4 to 20 mA.
  • Time base frequency: 1MHz, using on-board clock.
  • Temp. and pressure sensors are part of the FLO-CAL© clock.

Analog Input System For All Signals: (including temperature and pressure).

  • 16-bit resolution for analog to digital conversion
  • Uncertainty: ±0.01% of full scale

Digital Output System For Liquid Control Valves: Up to four AC valves, via Opto-isolated modules.

Fluid Flow Measurement

Maximum Flow Capacity of System: 200 GPM.

Flow Standards Configuration:

  • Up to 4 calibrated flow measurement standards, or 3 density standards.
  • Low/medium flow standards are piston rotary prover type, and range from 4 to 100,000 cc/min. (26.5 GPM), with fluid viscosity in the range of 0.8 to 3000 cps.
  • High flow standards are positive displacement standards, from 25 to 200 GPM. Higher flow rate available, consult ATC.
  • Selectable flow units of mass and volumetric measure: cc/min, liters/hr, GPM, cubic meters/hours, g/sec, kg/min, lb/min, kg/hr, lb/hr

Repeatability: 0.05% to a primary mass standard. Total uncertainty:±0.2% of reading, per ANSI-Z540-2.

Over Flow Range Condition:

  • Each flow standard has a protective solenoid valve, which is controlled by the FLO-CAL© program.
  • Should fluid that flows through the system exceed the maximum flow rate, all fluid control valves close and the operator will be prompted to take appropriate action.

Maximum Working Pressure: 150 PSIG. For higher pressure, consult ATC.

Liquid Media: Multiple liquid types are supported, typically oil and petroleum based fluids; consult ATC for other liquids.

Pressure Measurement:

  • Full bridge strain gage pressure transducer with electrical output
  • Minimum accuracy: ±0.1% FS

Temperature Measurement:

  • 100 Ohm platinum element RTD probe built in flow manifold
  • 304 stainless steel construction

Density (SG) Measurement:

  • Standard: based on liquid temp.
  • Optional: In-Line Density Standard
  • Range: 0-3000 kg/m
  • Uncertainty: ±0.15 kg/m, Stability: 0.15 kg/m/year
  • Optional: Sampling Density Meter
  • Range: 500-2000 kg/m
  • Uncertainty: ±0.1 kg/m, Stability: 0.3 kg/m /year


  • Temperature: 0 to 50°C, operating
  • -25 to 85°C, storage
  • Relative Humidity: 95% non-condensing

System Calibration: Each unit is supplied complete with calibration certificates traceable to the National Institute of Standards and Technology (NIST), and comply with ISO 9000 ANSI Z540-1/2 requirements.


* All measurement uncertainties are per ANSI/NCSL Z540-2-1997 and ISO/IEC 17025:2005