本安型防爆隔离栅用于危险场合
MTL7706/7787 是一款并联二极管本安型防爆隔离栅,适用于危险的场合,对于特定的Dwyer变送器起到连接或隔离的作用。这些隔离装置限制了能量传输到危险的区域,这点可用在易燃的场合阻止易燃。规格
变送器电压: 16.5 V @ 20 mA.带250Ω电阻;11 V @ 20 mA.带500Ω电阻
安全区域输出: 信号范围: 4 - 20 mA
负荷阻抗: 0 - 500Ω
电源: 20 - 35 VDC.
精度:±2A.
LED 显示: 绿色: 电源显示.
温度: 工作温度: -4 - 140F (-20 - 60C); 存储温度: -40 - 176F (-40 - 80C).
湿度: 5 - 95% RH.
终端: 可以容纳2.5 mm 标准或单个核心.
安全描述: 28 V, 300Ω, 93 mA; Um=250 rms or dc.
重量: 4.9 oz (140 g).
认证:见下表
见下表.
Region (Authority)
|
Standard
|
Approved For
|
Certificate/File No.
|
USA (FM) |
3600, 3610 entity, |
AIS/I,II,III/1/Entity ABCDEFGSCI- 942; NI/I/@/ABCD/T4 [I/0] AEx[ia]IIC-SCI-942 Entity; NI/1/2/IIC/T4; Ta=140°F (60°C) |
3010737
|
Canada (CSA) | CAN/CSA E60070, UL698, UL913, UL1604, IEC60079, C22.2 |
Class I, Div.2, Gps A, B, C, D; Ex nA [iA] IIC T4 Class I, Xone 2, Aex nA IIC T4 |
1345550
|
UK (BASEEFA) | EN 50014, EN 50020 | EEx ia IIC |
BAS01ATEX7217
|
UK (BASEEFA) Systems |
EN 50039 | EEx ia IIC |
Ex01E2219
|
Compatible Models: 637, 638, 608, IS626, PBLTX, SBLTX
MTL Zener Barrier
|
Approval
|
Dwyer Series
|
MTL7706
|
FM for Class I, II, II; Div. 1, Groups C, D, F, G
|
638
|
MTL7706
|
UL for Class I, Div. 1, Groups A, B, C, D; Class II, Div. 1, Groups E, F, G; Class III, Div. 1
|
IS626, PBLTX, SBLTX
|
MTL7706
|
FM for Class I, II, III; Div. 1, Groups B, C, D, E, F, G
|
637
|
MTL7706
|
FM for Class I, II, III; Div. 1, Groups A, B, C, D, E, F, G
|
608
|
MTL7706
FM
|
||
Group
|
µF
|
mH
|
A & B
|
0.083
|
4.2
|
BASEEFA (ATEX)
|
||
Group
|
µF
|
mH
|
IIC
|
0.083
|
4.2
|
MTL7787
FM
|
||
Group
|
µF
|
mH
|
A & B
|
0.083
|
3.05
|
BASEEFA (ATEX)
|
||
Group
|
µF
|
mH
|
IIC
|
0.083
|
3.05
|