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6005 Servo Tank Gauge - Measure level, interface, and density, and perform density profiles from a single, high accuracy instrument

6005 Servo Tank Gauge

Control Readers Award for Inventory Grade Level GaugesThe 6005 Servo Tank Gauge (STG) is an intelligent tank gauge for high accuracy liquid level measurement employing the latest micro-technology. In addition to level measurement, the 6005 STG can determine the interfaces between three liquids, specific gravity of these liquids and tank bottom. To enable accurate volume calculation or simply for indication, the 6005 STG will accept an input from the 4532 or 4539 temperature device (via two core cables using HART® protocol) or a single spot temperature element (Pt 100).

Once installed, all calibration and operating functions can be made via the user friendly Matrix program and touch sensitive keypad. Tank side monitoring and operation can be performed by the 4560 Servo Gauge Monitor (SGM).

Spot temperature Measurment Optional 40-240 VAC power supply PCB includes four (4) output contacts and an additional two (2) discrete inputs Simple connector board - no messy wire connectors 3-wire temperature input (PT100, Cu90, Cu100) for volume calculations and two (2) discrete inputs for mechanical level switches Upgrade provisions for additional or future software and communications functions Precision direct-drive stainless steel gearing eliminates the problems associated with Geneva gears Infrared optical sensors not affected by direct sunlight Absolute encoder - maintains correct level reading even after a power outage - no battery required On-board galvanically-isolated power circuit (20-65 DC) and optically-isolated communications Rotary switches allow you to configure the transmitter without a handheld device Single electronics assembly snaps in and locks down for easy retrofit Dual-encoder discs with reflective gold plating and reference tracks ensure an accurate level reading

Maintenance Prediction

The 6005 STG will provide advance warning of required maintenance, such as replacement of worn wire, etc. The operating life span of electrical and mechanical parts of the 6005 STG are factory set within the instrument's memory. This information is checked with the built-in clock and then compared and registered in the instrument.

Field Communications

The 6005 STG has a variety of communication protocols that enables compatibility and integration in the following tank gauging systems:

Control room interrogation and operation are facilitated by protocol conversion to various outputs by the 8130 Remote Terminal Unit (RTU). The 8130 RTU is ideal for large volume tank farms, integrating data from up to 160 tank sensors, transmitting to a FuelsManager® host system via 4 separate protocol converter modules.

Product Options

Pressure rating, drum chamber material

  • 0.2 bar g; aluminum or stainless steel casting
  • 6 bar g; aluminum or stainless steel casting
  • 25 bar g; stainless steel

Protection class

  • Weather proof, IP67/ NEMA 4X (only for the stainless steel Drum chamber)
  • FM - Explosion Proof - Class 1, Division 1, Groups C & D
  • CSA - Explosion Proof - Class I, Division 1, Groups C & D
  • ATEX II 1/2G Ex d IIB T4, T3 (only for the stainless steel Drum chamber)
  • ATEX II 1/2G Ex d[ia] IIB T4, T3
  • FM - Explosion Proof - AIS Class I, Division 1, Groups C & D
  • CSA - Class I, Division 1, Groups C & D (Eex d[ia])
  • ATEX II 1/2G Ex d IIC T4, T3 (only for the stainless steel Drum chamber)
  • ATEX II 1/2G Ex d IIB T4, T3, -40°C
  • ATEX II 1/2G Ex d[ia] IIB T4,T3, -40°C


  • Level
  • Tax + Weight NMi, Level
  • Multi measurement, Level, I/F Level, Bottom, Density
  • Tax + Weight NMi, Level + I/F Level, Bottom, Density
  • Density profile multi measurement, Level, I/F Level, Bottom, Density
  • Tax + Weight NMI, Density Profile, Level, I/F Level, Bottom, Density

Primary (digital) output

  • Serial Pulse (V1)
  • Enraf BPM
  • RS485 MODBUS
  • Digital output not selected

Secondary output

  • Secondary output not selected
  • Alarm contact, 4 SPST
  • 4-20 mA, 2 channel selectable
  • 4 SPST and 4-20 mA, 2 channel
  • 2 SPST, overspill protection
  • 4 SPST, 4-20 mA, 1 channel

Signal input from field units

  • HART (e.g. N453x, N4560)
  • HART and Pt100 spot temperature
  • HART and operation contact, 3 digits
  • HART, Pt100 spot temperature and operation contact
  • HART and 1x status
  • HART, Pt100 spot temperature and 1x status
  • HART, Pt100 spot temperature, operation contact and 1x status

Measuring range, wire material

  • 0...28m, AISI316 wire
  • 0...36m, AISI316 wire
  • 0...16m, AISI316 PTFE covered wire
  • 0...16m, Hastelloy C wire

Cable entry (x4)

  • G (PF) 3/4" or NPT 1/2" or 3/4" thread
  • Pg 16 or Pg 21 thread
  • M20 or M25 thread

Process connection

  • ANSI 3" 150lbs RF flange
  • ANSI 3" 300lbs RF flange (25bar drum) (only for 25 bar drum chamber)
  • ANSI 6" 150lbs RF flange
  • DIN DN80 PN10 RF flange
  • DIN DN80 PN25 RF flange (only for 25 bar drum chamber)

Power supply

  • 85...264 VAC, 50/60Hz
  • 20...62 VDC, 20W / 20...55 VAC, 50/60Hz, 20 V

Displacer shape diameter; material

  • Conical 50mm, PTFE
  • Cylindrical 50mm; AISI316 (stand.)
  • Cylindrical 40mm; AISI316
  • Cylindrical 30mm; AISI316
  • 70mm, W&M NMi
  • 110mm, W&M PTB
  • Cylindrical 50mm, Hastelloy C
  • Cylindrical 50mm, PTFE
  • Cylindrical 40mm, PTFE
  • Cylindrical 30mm, PTFE

O-ring; chamber finishing

  • NBR; standard chamber
  • Silicon rubber; standard chamber
  • Fluor rubber; standard chamber
  • Silicon rubber; PTFE coated chamber
  • Neoprene (ammonia); standard chamber

Additional options

  • Cleaning nozzle
  • Gas purging nozzle
  • Guide wires (AISI316)
  • Relief valve
  • Relief valve and pressure gauge
  • Sunshade