准确的气体分析使天然气管网顺利按规格掺氢
使用气相色谱仪可靠地跟踪和验证氢气和天然气混合率
控制和监测天然气管线注氢
天然气管网掺氢可有效地减少碳排放，加快向清洁氢为能源过渡。但氢气的热物性不同于天然气，注入管线的量必须低于气体总体积的 20%，混合的气体才会符合管线气体规格。此限制保护管网的完整性，降低公共安全风险，无需最终使用系统（包括工业设备、发电设备、家用锅炉等）改装。
正确的分析仪器是可靠控制及监测管线中 H2 浓度的关键。Rosemount 700XA 气相色谱仪对混合的气流、气流热值还有华白数进行组分分析，从最初的掺氢点跟踪整个管网的气体质量变化。
单击以继续读取 控制和监测天然气管线注氢
产品解决方案
- Best C6+ heating value/BTU repeatability available
- ± / -0.01 % (± / -0.1 BTU/1000 BTU) in temperature controlled environment
- ± / 0.02% (± / -0.2 BTU/1000 BTU) in uncontrolled environment (-20° to 60 °C/-4° to 140 °F) with a three minute cycle time
Input
Analog inputs: Two standard isolated inputs filtered with transient protection, 4–20 mA (user scalable and assignable)
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Output
Analog outputs: Six self-powered isolated outputs (4–20 mA)
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Ports
Serial Communication Ports: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
Designed for optimum reliability and flexibility, the Rosemount 700XA Process GC provides extended gas composition analysis with remote operation capabilities in an explosion-proof, field-mountable design. This reduces the need for elaborate analyzer shelters or temperature control requirements. Whether it is heating value measurement, trace contaminant monitoring, or product quality and process control, the Rosemount 700XA offers the flexibility to combine measurements in a single, transmitter-style GC, reducing footprint and total cost of ownership.
- Industry's first transmitter-style gas chromatograph capable of combining the measurement of natural gas energy content, hydrogen sulfide, speciation of total sulfur compounds to trace levels, and hydrocarbon dew point (HCDP) calculations in a single-analyzer solution
- Explosion-proof and ATEX/IECEX safety rating enables field installation without enclosure even in Class 1, Division 1 areas
- No instrument air for purge or oven required, reducing power consumption over traditional air purged GC units
Input
Analog Intputs: Six self-powered isolated outputs (4–20 mA)
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Digital inputs: Five inputs, user assignable, optically isolated, rated to 30V DC @ 0.5 A
Output
Analog outputs: Six self-powered isolated outputs (4–20 mA)
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Digital outputs: Five user-assignable outputs, Form C and electromechanically isolated, 24V DC
Communication Protocol
Ethernet: Two ports – one RJ-45 and one four-wire – with 10/100 mbps
Serial: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
Serial: Three termination blocks, configurable as RS-232, RS-422 or RS-485 and one RS-232 D-sub (9-pin) Modbus/PC Connection
