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Gas Density Transmitter - GD10-F
Brand: WIKA Alexander Wiegand SE & Co. KGThe 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 compensated 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.
- Temperature compensated and hermetically sealed, therefore no influence temperature, by atmospheric pressure fluctuation or differences in altitude.
- Wetted parts and case made of stainless steel, fully welded.
- Ingress protection IP 67, field case, excellent long-term stability, high EMI performance.
Specifications
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
Burst Pressure of Sensor bar Abs.
- 17
- 35
- 80
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
- Cable Gland M20 x 1.5
Electrical Connection
- Internal terminal Screws, cross section Max. 2.5 mm²
Wiring Protection
- Protected Against Reverse Polarity and Overvoltage
Ingress Protection
- IP67 per EN 60529 / IEC 529
Weight
- Maximum 0.5 kg
- Gas density monitoring of closed SF6 tanks
- For outdoor installation in SF6 gas-insulated switchgear