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Transmitter with Modbus Output - GDT-20
Brand: WIKA Instruments Ltd.The model GDT-20 transmitter is a multi-sensor system with digital output for the measurement parameters of pressure and temperature. Based on these measured values, the condition-related data can be determined.
Features- High-accuracy sensor technology.
- MODBUS output protocol via RS-485 interface.
- Ingress protection IP 65.
- Very good long-term stability and EMC characteristics.
- Compact dimensions.
Specifications
Brand
Measuring Ranges
- Density: 0 ... 60 g/litre (8.87 bar abs. at 20° C)
- Pressure reference: Absolute
- Overpressure limit: up to 30 bar abs
- Burst pressure: 52 bar abs.
- Pressure: 0 ... 16 bar abs.
- Temperature: -40 ... +80° C
Accuracy Data
- ±0.06 %, ±10 mbar (0 ... 80° C)
- Pressure: ±0.20 %, ±32 mbar (-40 ... < 0° C)
- Temperature: ±1 K
- Density: ±0.60 %, ±0.35 g/litre (-40 ... +80° C
- Specifications only valid for clean, gaseous SF6
Long-term Stability at Reference Conditions
- Pressure: ≤ ±0.05% of Span/year
- Temperature: ≤ ±0.10 % of span/year
Refresh Rate
- Pressure: 20 ms
- Temperature: 20 ms
- Density: 20 ms
Process Connection
- Transmission fluid: synthetic oil
- G ½ B (male), stainless steel
Case
- Stainless steel
Permissible Humidity
- ≤ 90 % r. h. (non-condensing)
Ingress Protection
- IP 65, only when plugged in and using mating connectors with the corresponding ingress protection
Electrical Safety
- Protected against reverse polarity, protected against overvoltage
Dimensions
- Diameter: 48 mm
- Height: 103 mm
Weight
- approx. 0.40 kg
