Type 8318 Pressure Transmitter with IO-Link Interface
The Type 8318 pressure transmitter is designed to measure and monitor relative pressure in liquids and gases. It features a metallic thin film strain gauge measurement principle and offers a digital IO-Link interface for bidirectional communication, enabling easy access to process data, diagnostic information, and device settings.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | Stainless steel 1.4301 (304) |
| Non-wetted parts | Housing: Stainless steel 1.4301 (304), Fixed connector: Stainless steel 1.4301 (304) |
| Wetted parts | Process connection: Stainless steel 1.4404 (316L), Measuring element: Membrane in stainless steel 1.4435 (316L), Welding ring in stainless steel 1.4404 (316L) |
| Weight | Approx. 160g |
| Measurement technology | Metallic thin film strain gauge |
| Measured quantity | Relative pressure (absolute pressure on request) |
| Measuring Range | -0.4...+0.4bar, -1...+1bar, -1...+2.5bar, -1...+5bar, -1...+12bar |
| Monitoring | Process data invalid |
| Monitoring | Measuring range overflow |
| Monitoring | Measuring range underflow |
| Monitoring | Device hardware fault |
| Compensated ambient temperature range | -20...+80°C (-4...+176°F) |
| Average Tc of zero | -0.4...+0.4bar: 0.020%/°C, -1...+1bar: 0.015%/°C, -1...+2.5bar: 0.015%/°C, -1...+5bar: 0.010%/°C, -1...+12bar: 0.010%/°C |
| Average Tc of measuring span | -0.4...+0.4bar: 0.010%/°C, -1...+1bar: 0.010%/°C, -1...+2.5bar: 0.010%/°C, -1...+5bar: 0.010%/°C, -1...+12bar: 0.010%/°C |
| Thermal hysteresis | -0.4...+0.4bar: 0.15% of measuring span, -1...+1bar: 0.10% of measuring span, -1...+2.5bar: 0.10% of measuring span, -1...+5bar: 0.10% of measuring span, -1...+12bar: 0.10% of measuring span |
| Zero Offset | -0.4...+0.4bar: 0.30% of measuring span, -1...+1bar: 0.15% of measuring span, -1...+2.5bar: 0.10% of measuring span, -1...+5bar: 0.10% of measuring span, -1...+12bar: 0.10% of measuring span |
| Measuring resolution | 14bit |
| Measurement Deviation | -0.4...+0.4bar: 0.7% of measuring span, -1...+1bar: 0.6% of measuring span, -1...+2.5bar: 0.5% of measuring span, -1...+5bar: 0.5% of measuring span, -1...+12bar: 0.5% of measuring span |
| Linearity | -0.4...+0.4bar: 0.3% of measuring span, -1...+1bar: 0.3% of measuring span, -1...+2.5bar: 0.3% of measuring span, -1...+5bar: 0.25% of measuring span, -1...+12bar: 0.25% of measuring span |
| Hysteresis | -0.4...+0.4bar: 0.05% of measuring span, -1...+1bar: 0.05% of measuring span, -1...+2.5bar: 0.05% of measuring span, -1...+5bar: 0.05% of measuring span, -1...+12bar: 0.05% of measuring span |
| Response Time | ≤7ms |
| Overload limit | -0.4...+0.4bar: 1bar, -1...+1bar: 4bar, -1...+2.5bar: 16bar, -1...+5bar: 40bar, -1...+12bar: 100bar |
| Burst pressure | -0.4...+0.4bar: 1.5bar, -1...+1bar: 8bar, -1...+2.5bar: 24bar, -1...+5bar: 60bar, -1...+12bar: 150bar |
| Stability | Per year: -0.4...+0.4bar: ≤0.3% of measuring span, -1...+1bar: ≤0.2% of measuring span, -1...+2.5bar: ≤0.2% of measuring span, -1...+5bar: ≤0.2% of measuring span, -1...+12bar: ≤0.2% of measuring span |
| Operating Voltage | In IO-Link operation: 18...32VDC, In switch operation: 9.6...32VDC, Nominal voltage: 24VDC |
| Power source | Not supplied |
| Current Consumption | In idle operation: ≤10mA, In IO-Link operation: ≤12mA, In switch operation: ≥250mA (with two digital outputs) |
| Signal processing | Input filter |
| Signal processing | Digital filter |
| Signal processing | Second order |
| Signal processing | Filter time constant can be set |
| Number of outputs | 1 digital output in IO-Link operation, 2 digital outputs for switch operation |
| Switching Function Configuration | Hysteresis function (hysteresis configurable) or window function (fixed setting, symmetrical, ±0.25% of the measuring range) |
| Switching current | ≤100mA per output |
| Voltage drop | ≤2VDC |
| Recommended connection cable | 4-wire unshielded cable, max. 20m |
| Fluid | Liquid and gaseous medium |
| Fluid Temperature | -40...+125°C (-40...+257°F) |
| Process Connection | G1/4 or NPT1/4 (according to EN837), G3/4 flush diaphragm (according to ISO228-1), Clamp DN10/20 (according to DIN32676) |
| Electrical Connection | M12×1 male connector, 4 pins, A-coded, non-rotating (IO-Link port class A) |
| Digital Communication Interface | IO-Link Device V1.1, downward compatible to V1.0 |
| Transmission Speed | COM3 (230.4kBd) |
| Cycle Time | Min. 2ms |
| IO device description | See 'Device Description Files' on the website in the Software chapter Type 8318 |
Applications
Key Features
Datasheet
Supplier Information
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