两线制4-20mA输出

粉尘浓度检测仪经过一个固定探头的静电荷感应量测量粉尘粒子浓度。粉尘粒子与探头感应产生静电荷，通过探头进行信号放大并传送进监测控制系统。静电荷的大小与粉尘粒子的流量成正比。本系统的高科技电子线路把这部分电荷转换成为控制信号输出，用于连续记录粉尘粒子的总量或浓度

Service: Air and compatible gases, any type particulate conductive or nonconductive.
Wetted Materials: 304 SS and PTFE.
Air Velocity Range: 300 ft/min and higher.
Minimum Detection: Standard: 10.0 pA, Optional: 5.0 pA and 0.5 pA.
Temperature Limits: Ambient: -15 to 160°F (-25 to 70°C); Process: Standard: -40 to 250°F (-40 to 120°C); Optional: -40 to 450°F (-40 to 232°C).
Pressure Limit: 10 psi (0.69 bar).
Power Requirement: 18-28 VDC (24V Nominal).
Output Signal: 4-20 mA.
Loop Resistance: 300 Ohms maximum.
Current Consumption: Powered from 4-20 mA loop.
Electrical Consumption: Terminal Block.
Process Connection: See Model Chart on

Enclosure Rating: Weatherproof, NEMA 4X (IP 66).
Mounting Orientation: Any.
Weight: Varies with length of probe and type of mount.
Agency Approvals: CE Ordinary locations only, CSA

选型表 

Example	PMT	A1	1	T1	P1	1	L1.5	PMT-A11T1P1-L1.5 Particulate Transmitter, ordinary/general purpose locations, CE approval, NEMA 4X, CSA, , 1/2" NPT connection, 250°F max. temp., 10 psi max. pressure, 10.0-5000 pA, 1.5" probe.
Series Designator	PMT							PMT Particulate Transmitter (1-piece configuration, sensor included in price)
Enclosure Rating		A1 AHZ2						Ordinary/General Purpose Locations, CE Approval, NEMA 4X, CSA Hazardous Location, CSA Approval, Class I, Division II, Groups A-D; Class II, Groups F,G
Process Connection			1 2 3 4					1/2" NPT 1.5" Sanitary Connection 2" 150# ANSI Flange 2" 150# ANSI Flange with Process Mating Flange and Installation Kit.
Maximum Process Temperature				T1 T2				250°F (121°C) 450°F (232°C)
Maximum Process Pressure					P1			10 psi
Range						1 2 3		10.0-5000 pA 5.0-5000 pA 0.5-5000 pA (required for low levels or EPA leak detection)
Insertion Length (recommended at least 1/2 duct diameter)							L1.5 L03 L05 L10 L15 L20 L30 L36	1.5" Probe 3" Probe 5" Probe 10" Probe 15" Probe 20" Probe 30" Probe 36" Probe