DWYER PMT系列粉塵濃度變送器的詳細描述：

產(chǎn)品名稱:? PMT系列粉塵濃度變送器
產(chǎn)品型號:? PMT

兩線制4-20mA輸出

PMT系列粉塵濃度變送器是一款久負盛名、幾乎免維護的一款電荷感應粉塵流動檢測產(chǎn)品，能提供連續(xù)在線粉塵含量檢測和除塵設備粉塵泄漏檢測。

探頭工作原理：采用電荷感應和探頭保護技術，當粉塵微粒流經(jīng)探頭附近的時，微弱的電信號感應進入到探頭中，一個DSP數(shù)字信號處理器處理此感應信號，成為一個線性比例與粉塵威力質(zhì)量含量的絕對輸出值。由于采用了探頭保護技術和電荷感應技術，確保該探頭能檢測各種潮濕粉末和高導電粉塵，傳感器為被動型(無電源和電子電路)，基本免維護，非常耐用。

測量范圍：>0.3微米的任何顆粒 探測等級：0.1PA 等效于0.1mg/m3， 0.5PA等效于0.5mg/m3，5.0PA等效于5.0mg/m3。

輸出：4-20mA

優(yōu)點：

1.比傳統(tǒng)的摩擦電原理的粉塵探頭具有更高的可靠性

2.滿足美國國家環(huán)保局EPA認證

3.對于各種腐蝕、粘稠氣體、水比較多,需要儀表本身比較耐磨損和防堵塞的場合.

應用場合

各種管道氣體輸送粉料,氣體加壓運輸?shù)纫约安即龎m(收塵設備),高爐余壓發(fā)電TRT粉塵保護.嚴格和傳統(tǒng)的摩擦電原理粉塵探頭區(qū)分.

DWYER PMT系列粉塵濃度變送器

特性：
Service: Air and compatible gases, any type particulateconductiveor 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 and0.5pA.
Temperature Limits: Ambient: -15 to 160°F (-25 to 70°C);Process:Standard: -40 to 250°F (-40 to 120°C); Optional: -40 to450°F (-40to 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

選型表

EXAMPLE
PMT
A1
1
T1
P1
1
L1.5
PMT-A11T1P1-L1.5 Particulate Transmitter,ordinary/generalpurpose 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,sensorincluded in price)

ENCLOSURE RATING

A1


Ordinary/General Purpose Locations, CE Approval, NEMA 4X, CSA

AHZ2
Hazardous Location, CSA Approval, Class I, Division II,GroupsA-D; Class II,


Groups F,G

PROCESS CONNECTION

1

1/2" NPT

2
1.5" Quick Clamp Connection

3
2" 150# ANSI Flange

4
2" 150# ANSI Flange with Process Mating FlangeandInstallation Kit.

MAXIMUM PROCESS


T1

250°F (121°C)

TEMPERATURE
T2
450°F (232°C)

MAXIMUM PROCESS


P1

10 psi

PRESSURE

RANGE


1

10.0-5000 pA

2
5.0-5000 pA

3
0.5-5000 pA (required for low levels or EPAleakdetection)

INSERTION LENGTH


L1.5
1.5" Probe

(recommended at
L03
3" Probe

least 1/2 duct diameter)
L05
5" Probe


L10
10" Probe


L15
15" Probe


L20
20" Probe


L30
30" Probe


L36
36" Probe