双差压变送器 A2G-52 通风与空调 阀门 百叶窗 流量监测

应用

• 用于监测空气、不可燃和非腐蚀性气体

• 风扇、风机和过滤监测

• 压力和流量监测

• 阀门和空气百叶窗的监控和控制

• 洁净室压力监测

• 易于安装

• 两个差压传感器集成在一个仪器中

• 两个端口可输入温度传感信号或模拟信号

• Modbus^?接口

• 两行LCD显示可直接读取两个压力数值

A2G-52型双差压变送器把两个差压变送器集成在一个仪器中，所以可以从两个不同的控制点进行压力测量。

A2G-52型双差压变送器有一个Modbus?接口和一个输入接口。

通过输入接口，最多两个温度信号或者一个0… 10V的模拟信号可直接传导至测量仪器中。因此，使用这类集成型温度变送器可以降低材料和安装的成本。

Dual differential pressure sensor, model A2G-52 Measuring element Piezo measuring cell Units of measure Pa, mbar, inWC, mmWC, psi Measuring range -250 … +2,500 Pa and -250 … +7,500 Pa Accuracy class -250 ... +2,500 Pa = pressure<125 1="" pa="" pressure="">125 Pa = ±1 Pa + 1 % -250 ... +7,000 Pa = pressure<125 pa="" 1.5="" pressure="">125 Pa = ±1 Pa + 1.5 % all data refer to the current measured value (of measured pressure) Process connection Connecting nozzle (copper alloy), lower mount, for hoses with inner diameter 4 mm Power supply UB AC 24 V or DC 24 V ±10 % Electrical connection Cable gland M20 2 x 4 spring-clip terminals, max. 1.5 mm2 Output signal Modbus? Display Two-line LC display (12 characters/line) Line 1: Active measurement, input A Line 2: Active measurement, input B Case Plastic (ABS) Cover: Polycarbonate (PC) Permissible temperatures ■ Ambient temperature ■ Medium temperature -20 ... +70 °C -10 ... +50 °C Relative humidity 0 … 95 % r. h., non-condensing Ingress protection IP54 Weight 150 

Modbus? communication Protocol Modbus? via serial interface Transfer mode RTU Interface RS-485 Byte format (11 bits) in RTU mode Coding system: 8 bits binary Bits per byte: - 1 Start bit - 8 data bits, lowest-order bit is sent first - 1 bit for parity - 1 stop bit Baud rate 9,600, 19,200, 38,400 - adjustable in the configuration Modbus? addresses 1 ... 247 addresses - adjustable in the configuration

Register Parameter description Data type Value Display 3x0001 Program version 16 bit 0 ... 1,000 0.00 ... 99.00 3x0002 Pressure measurement A 16 bit -250 ... 2,500 -250 ... 2,500 (Pa) 3x0003 Pressure measurement B 16 bit -250 ... 2,500 -250 ... 2,500 (Pa) 3x0004 Input 1: 0 ... 10 V 16 bit 0 ... 1,000 0 ... 100 % 3x0005 Input 1: Pt1000 16 bit 500 ... 500 -50 ... +50 °C 3x0006 Input 1: Ni1000 16 bit -500 ... 500 -50 ... +50 °C 3x0007 Input 1: Ni1000-LG 16 bit -500 ... 500 -50 ... +50 °C 3x0008 Input 1: NTC10k 16 bit -500 ... 500 -50 ... +50 °C 3x0009 Input 2: 0 ... 10 V 16 bit 0 ... 1,000 0 ... 100 % 3x0010 Input 2: Pt1000 16 bit -500 ... 500 -50 ... +50 °C 3x0011 Input 2: Ni1000 16 bit -500 ... 500 -50 ... +50 °C 3x0012 Input 2: Ni1000-L 16 bit -500 ... 500 -50 ... +50 °C 3x0013 Input 2: NTC10k 16 bit -500 ... 500 -50 ... +50 °C Modbus? register FC04 - Read input register Register Parameter description Data type Value Display 1x0001 Input 1: BIN IN Bit 0 0 ... 1 On - Off 1x0002 Input 2: BIN IN Bit 0 0 ... 1 On - Off FC02 - Read input status Register Parameter description Data type Value Display 0x0001 Zeroing Bit 0 0 ... 1 On - Off FC05 - Write single coil Register Parameter description Data type Value Display 4x0001 Beta value of NTC resistor 16 bit 0 ... 30,000 0 ... 30,000 (standard 4,220)