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Gas Density Transmitter - GD10-C, GD10-L

Brand: WIKA Alexander Wiegand SE & Co. KG
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The gas density transmitter is electronically compensated. The compensation follows the nonlinear behavior of SF6 gas. The basic principle is the calculation following virial equation.

The gas density transmitter picks up the physical variables pressure and temperature of the SF6 gas contained in the device (tank).

The current gas density is ascertained from both variables by means of an electronic evaluation system.

Thermal induced pressure changes are dynamically com-pensated and do not affect the output signal.
Features
  • Measuring ranges from 0-10 to 0-80 g/litre. 
  • Output signal 4-20 mA, 2-wire. 
  • Wetted parts and case made of stainless steel, fully welded. 
  • Ingress protection IP 54 up to 68, depending on the electrical wiring. 
  • Excellent long-term stability, high EMI performance. 
The gas density transmitter is electronically compensated. The compensation follows the nonlinear behavior of SF6 gas. The basic principle is the calculation following virial equation.

The gas density transmitter picks up the physical variables pressure and temperature of the SF6 gas contained in the device (tank).

The current gas density is ascertained from both variables by means of an electronic evaluation system.

Thermal induced pressure changes are dynamically com-pensated and do not affect the output signal.
Features
  • Measuring ranges from 0-10 to 0-80 g/litre. 
  • Output signal 4-20 mA, 2-wire. 
  • Wetted parts and case made of stainless steel, fully welded. 
  • Ingress protection IP 54 up to 68, depending on the electrical wiring. 
  • Excellent long-term stability, high EMI performance. 
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Specifications

Brand

Density Ranges G/Litre

  • 10
  • 16
  • 25
  • 40
  • 60
  • 80

(Pressure Ranges Related to 20° C) (bar Abs.)

  • (1.64)
  • (2.59)
  • (3.97)
  • (6.16)
  • (8.87)
  • (11.33)

Over Pressure Safety bar Abs.

  • 14
  • 29
  • 67

Designed for Sensing

  • Pure SF6 Gas

Principle

  • piezoresistive

Pressure Reference

  • absolute Pressure

Process Connection

  • G 1/2 B Male (Other Connections on Request)

Materials

  • Synthetic oil
  • Stainless Steel

Power Supply UB

  • DC 10 ... 30 V

Signal Output & Maximum Load RA

  • 4 ... 20 mA, 2-Wire, RA ≤ (UB - 10 V) / 0.02 A with RA in Ohm and UB in Volt

Accuracy

  • -40° C: 3 % of Span, 20° C: 1 % of Span, 60° C.: 2.3 % of Span (Optimal accuracy point)
  • -40° C: 4 % of Span, 20° C: 2 % of Span, 60° C: 3.3 % of Span (Beginning and end of Measuring Range)

1-Year Stability

  • ≤ 0.3 % of Span (At reference Conditions)

Nominal Temperature

  • -40° to +60° C (-40° to +140° F) [gas phase!]

Storage Temperature

  • -40° to +80° C (-40° to +176° F)

CE Conformity

  • EN 61326-1

EMC Directive

  • 2004/108/EC, EN 61326 Emission (Group 1, Class B) and Immunity (Industrial locations)

High Voltage Strength

  • DC 750 V (wiring versus Case)

Electromagnetic Immunity (EMI) / RFI Per IEC 61000-4

  • IEC 61000-4-2 (ESD): test level 4 (8 kV)
  • IEC 61000-4-3 (Field): test level 3 (10 V/m)
  • IEC 61000-4-4 (Burst): test level X (± 2 kV)
  • IEC 61000-4-5 (Surge): test level 2 (± 1 kV)
  • IEC 61000-4-6 (Conducted RFI): test level 3 (10 V)

Cable Gland & Ingress Protection Per EN 60529 / IEC 529

  • Model GD10-L: 2-Pin plug, IP67 {L-junction box Brass, Nickel-Plated, IP67}
  • Model GD10-C: cable gland with flying lead 1.5 m, IP68

Wiring Protection

  • Protected Against Reverse Polarity and Overvoltage

Weight

  • Maximum 0.5 kg
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Applications

  • Gas density monitoring of closed SF6 tanks
  • For indoor and outdoor installation in SF6 gas-insulated switchgear
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