限位开关 QN2MCR05HRA（Stonel/Metso 阀位反馈开关）

限位开关 （Stonel/Metso阀位反馈开关）

是美国 Stonel（斯通尼尔，属Metso/Neles 集团） 旗下 QN 系列紧凑型防爆阀位限位开关，专为气动执行器配套，用于阀门全开 /全关位置反馈与安全联锁，广泛用于电厂、石化、煤化工等高危防爆工况。

Stonel 限位开关

1. 型号释义（）

QN：QN 系列紧凑型防爆开关盒

2：2 路触点输出（标准型）

MCR：霍尔非接触式（Magnetic ContactlessRelay），无机械触点、零磨损

05：标准通用组态，适配多数执行器

HRA：本安型 Ex ia IIC T6，IP67，适用于0/1 区防爆区域

2. 核心技术参数

检测方式：霍尔磁感应，无机械触点、免维护、长寿命

触点配置：2路独立冗余开关量（NO/NC）

防爆等级：Ex ia IICT6（本安型），ATEX/IECEx 认证

防护等级：IP67（防尘、防水溅）

工作温度：-40℃～+85℃

供电 / 信号：12～24V DC，NAMUR标准或干接点输出

机械寿命：≥ 500 万次（无触点磨损）

电气寿命：≥ 100 万次

外壳材质：铝合金（防腐、抗冲击）

安装接口：标准 NAMUR 法兰，适配美卓 ND9000定位器及主流执行器

3. 核心功能

阀位精准反馈

实时检测阀门全开 / 全关位置，输出干接点 / NAMUR信号至 DCS/PLC，用于状态显示与联锁控制。

非接触式霍尔技术

无机械触点，无磨损、无抖动、免维护，彻底避免传统微动开关的接触不良与寿命短问题。

防爆安全设计

本安型 Ex ia IIC T6，适用于0/1区易燃易爆环境，保障化工、油气场景安全。

高可靠冗余输出

2路独立触点，故障容错，一路损坏不影响另一路信号，提升系统可靠性。

4. 关键特点

无触点长寿命：霍尔感应，500 万次 +机械寿命，免维护、降低运维成本。

防爆防腐抗干扰：IP67 +铝合金外壳，耐受粉尘、潮湿与强电磁干扰。

即插即用易安装：标准 NAMUR 接口，适配主流执行器，10分钟内完成安装调试。

宽温稳定运行：-40℃～+85℃，适应极端工业环境。

5. 典型应用

电力：锅炉气动阀门、脱硫脱硝切断阀

PBD-23900176

PBD-23900177

7MH7725-1AA

7MH7725-1AB

7MH7725-1AC

7MH7725-1AD

7MH7725-1AA

7MH7725-1AB

7MH7725-1AC

7MH7725-1AD

7MH7725-1AE

7MH7725-1AF 

7MH7725-1AG

7MH7725-1AH

7MH7725-1CP

7MH7725-1EG

7MH7725-1EH 

7MH7725-1EJ 

PBD-23900176

PBD-23900177

7MH7725-1AA

7MH7725-1AB

7MH7725-1AC

7MH7725-1AD

7MH7723-1AJ

7MH7723-1DQ

7MH7723-1DR

7MH7723-1BA

7MH7723-1BB

7MH7723-1DS

7MH7723-1DE

7MH7723-1EU

7MH7723-1EV

7MH7723-1EW

7MH7723-1FM

7MH7723-1FN

7MH7723-1FP

7MH7723-1FQ

7MH7723-1GJ

7MH7723-1BQ

7MH7723-1ET

7MH7723-1KA

7MH7723-1DD

7MH7723-1GD

7MH7724-1AC

7MH7724-1AD

7MH7724-1AE

7MH7724-1AF

7MH7724-1AG

7MH7724-1AH

7MH7724-1AJ

7MH7724-1AK

7MH7723-1DE

7MH7723-1EU

7MH7723-1EV

7MH7723-1EW

7MH7723-1EX

7MH7723-1EY

7MH7723-1FA

7MH7723-1FB

7MH7723-1FC

7MH7723-1FD

7MH7723-1FE

7MH7723-1FF

7MH7723-1FG

7MH7723-1FH

7MH7723-1FJ

7MH7723-1FK

7MH7723-1FL

7MH7723-1BN

7MH7723-1BP

7MH7723-1KB

7MH7723-1ET

7MH7723-1DC

7MH7723-1FT

7MH7723-1AJ

7MH7723-1DN

7MH7723-1DP

7MH7723-1AL

7MH7723-1AM

7MH7723-1DS

7MH7724-1AC

7MH7724-1AD

7MH7724-1AE

7MH7724-1AF

7MH7724-1AG

7MH7724-1AH

7MH7724-1AJ

7MH7724-1AK

PBD:22520-1C0

PBD:22520-2C0

PBD:22519-1A0

PBD:22519-2A0

PBD:22519-3A0

PBD:22519-1B0

PBD:22519-2B0

PBD:22519-3B0

PBD:22519-1C0

PBD:22519-2C0

PBD:22519-3C0

PBD:22520-1A0

PBD:22520-2A0

PBD:22520-1B0

PBD:22520-2B0

PBD:20401-600

PBD:20395-600

PBD:20405-600

PBD:20401-700

PBD:20395-700

PBD:20405-700

PBD:20455-10

PBD:20458-10

PBD:20455-20

PBD:20458-20

PBD:20455-30

PBD:20458-30

PBD:20455-40

PBD:20458-40

PBD:20455-50

PBD:20458-50

PBD:20401-200

PBD:20395-200

PBD:20405-200

PBD:20401-300

PBD:20395-300

PBD:20405-300

PBD:20401-400

PBD:20395-400

PBD:20405-400

PBD:20401-500

PBD:20395-500

PBD:20405-500

PBD:20388-122

PBD:20388-222

PBD:20388-322

PBD:20388-422

PBD:20388-522

PBD:20388-622

PBD:20388-124

PBD:20388-224

PBD:20388-324

PBD:20388-424

PBD:20388-524

PBD:20388-624

PBD:20388-125

PBD:20388-225

PBD:20388-325

PBD:20388-425

PBD:20388-525

PBD:20377-124

PBD:20377-224

PBD:20377-324

PBD:20377-424

PBD:20377-524

PBD:20377-125

PBD:20377-225

PBD:20377-325

PBD:20377-425

PBD:20377-525

PBD:20388-121

PBD:20388-221

PBD:20388-321

PBD:20388-421

PBD:20388-521

PBD:20388-621

PBD:20388-415

PBD:20388-515

PBD:20388-615

PBD:20377-121

PBD:20377-221

PBD:20377-321

PBD:20377-421

PBD:20377-521

PBD:20377-122

PBD:20377-222

PBD:20377-322

PBD:20377-422

PBD:20377-522

PBD:20388-112

PBD:20388-212

PBD:20388-312

PBD:20388-412

PBD:20388-512

PBD:20388-612

PBD:20388-114

PBD:20388-214

PBD:20388-314

PBD:20388-414

PBD:20388-514

PBD:20388-614

PBD:20388-115

PBD:20388-215

PBD:20388-315

PBD:20377-112百家号往下

PBD:20377-212

PBD:20377-312

PBD:20377-412

PBD:20377-512

PBD:20377-114

PBD:20377-214

PBD:20377-314

PBD:20377-414

PBD:20377-514

PBD:20377-115

PBD:20377-215

PBD:20377-315

PBD:20377-415

PBD:20377-515

PBD:20388-111

PBD:20388-211

PBD:20388-311

PBD:20377-111

PBD:20377-211

PBD:20377-311

PBD:20377-411

PBD:20377-511

7MH7723-1LV

7MH7723-1LW

7MH7723-1LX

7MH7723-1LY

7MH7723-1MA

7MH7723-1MB

7MH7723-1MC

7MH7723-1MD

7MH7723-1ME

7MH7723-1MF

7MH7723-1MG

7MH7723-1MH

7MH7723-1MJ

7MH7723-1MK

7MH7723-1ML

7MH7724-1AE

7MH7724-1AF

7MH7724-1AG

7MH7724-1AH

7MH7724-1AJ

7MH7724-1AK

PBD-23900246

PBD-23900247

7MH7723-1LT

7MH7723-1LU

7MH7723-1LD

7MH7723-1LE

7MH7723-1LF

7MH7723-1LG

7MH7723-1LH

7MH7723-1LJ

7MH7723-1LK

7MH7723-1LL

7MH7723-1LM

7MH7723-1LN

PBD-23900176

PBD-23900177

PBD-23900244

PBD-23900245

7MH7723-1LT

7MH7723-1KN

7MH7723-1KN

7MH7723-1KQ

7MH7723-1KR

7MH7723-1KS

7MH7723-1KT

7MH7723-1KU

7MH7723-1KV

7MH7723-1KW

7MH7723-1KX

7MH7723-1KY

7MH7723-1LA

7MH7723-1LB

7MH7723-1LC

7MH7724-1AC

7MH7724-1AD

7MH7724-1AE

7MH7724-1AF

7MH7724-1AG

7MH7724-1AH

7MH7724-1AJ

7MH7724-1AK

7MH7724-1AG

7MH7724-1AH

7MH7724-1AJ

7MH7724-1BQ

7MH7724-1AK

7MH7724-1BR

7MH7724-1BS

7MH7724-1BT

7MH7724-1BU

7MH7724-1BV

7MH7725-1AC

7MH7725-1AD

7MH7725-1AE

7MH7725-1AF

7MH7725-1DQ

7MH7725-1DL

7MH7725-1DM

7MH7725-1DN

7MH7725-1DP

7MH7725-1EG

7MH7725-1EH

7MH7725-1EJ

7MH7725-1DT

7MH7725-1DU

7MH7725-1DV

7MH7724-1AF

7MH7725-1EK

7MH7725-1EL

7MH7725-1EM

7MH7725-1EN

7MH7725-1EP

7MH7725-1CS

7MH7725-1CT

7MH7725-1CU

7MH7725-1CV

7MH7725-1CW

7MH7725-1CX

7MH7725-1EK

7MH7725-1EL

7MH7725-1EM

7MH7725-1EN

7MH7725-1EG

7MH7725-1EH

7MH7725-1EJ

PBD-23900224

PBD-23900225

PBD-23900242

A5E50846040001

A5E50846040002

A5E50846040003

X

Y

A5E50846041001

A5E50846041002

A5E50846041003

A5E50846041004

A5E50846041005

A5E50846041006

7MH5117-1QD017

MH5117-2BD01

7MH5117-2KD01

7MH5117-2QD01

A5E50846035001

A5E50846035002

A5E50846035003

A5E50846035004

A5E506683400077MH7723-1723-1SG

7MH7723-1SM

7MH7723-1SN

7MH7723-1SP

7MH7723-1SQ

7MH7723-1SR

7MH7723-1SS

7MH7723-1ST

7MH7723-1SU

7MH7723-1SV

7MH7723-1SW

7MH7723-1SX

7MH7723-1TA

7MH7723-1TB

7MH7723-1TC

7MH7723-1TD

7MH7723-1TE

7MH7723-1TF

7MH7723-1TG

A5E50846042001

7MH7726-1BU

M

N

P

Q

R

A5E50668260001

A5E50668260002

A5E50668260003

A5E50668260004

A5E50668260005

A5E50668260006

A5E50668260007

A5E50668340001

A5E50668340002

A5E50668340003

A5E50668340004

A5E50668340005

7MH5117-1

7MH5117-2KD00

7MH5117-2QD00

6FX20012PA50

6FX20012PB00

6FX20012PC50

6FX20030SU12

A5E50846036003

A5E50846036001

A5E50846036002

7MH7723-1GA

7MH7723-1RB

A5E03623963

7MH3115-3AA1

7MH3115-1BA1

7MH3115-2BA1

7MH3115-3BA1

7MH3115-1CA1

7MH3115-2CA1

7MH4950-1AA01

7MH4950-2AA01

7MH4900-2AA01

7MH4900-3AA01

7MH4138-6AA00-0BA0

7MH4900-2AK63

7MH7723-1AF

7MH7723-1AG

A5E34320776

A5E34320778

7MH7723-1DG

7MH7723-1CD

A5E34699664

7ML1830-1PM

7ML1830-1PN

7ML1830-1HR

7ML1830-1HT

7MH7723-1BJ

7MH7723-1AJ

7MH7723-1CB

7MH4702-8AG

7MH4702-8AF

7MH5001-0AA20

7MH5001-0AA00

7MH5001-0AA01

7MH4710-5BA

7MH4710-5CA

7MH7723-1HN

A5E34699647

7MH7723-1CD

A5E34699664

7ML1830-1 PN

7ML1830-1PM

7ML1830-1HR

7ML1830-1HT

A5E31871009

7MH7723-1AF

A5E34320772

A5E34320773

A5E34320774

A5E34320775

7MH7723-1DG

7MH7723-1AK

7MH4710-2AA

7MH5001-0AA20

7MH5001-0AA00

7MH5001-0AA01

7MH5001-0AD20

7MH5001-0AD01

7MH7723-1BJ

7MH7723-1AJ

7MH7726-1AN

7MH7723-1CB

7MH5714-6LD10

7MH5714-6PD10

7MH4702-8AG

7MH4702-8AF

7MH5001-0AA00

7MH5001-0AA01

7MH5001-0AD20

7MH4710-5BA

7MH4710-5CA

7MH4710-2AA

7MH5001-0AA20

7MH4710-5BA

7MH4710-5CA

7MH4702-8AG

7MH4702-8AF

7MH4900-3AA01

7MH4138-6AA00-0BA0

7MH4950-1AA01

7MH4950-2AA01

7MH4900-2AA01

7ML1930-6AB

7ML1930-6AC

7ML1930-6AD

7ML1930-6AP

7ML1930-6AE

7ML1930-6AF

7ML1930-6AG

7ML1930-6AJ

7ML1930-6AK

7ML1930-1BU

7ML1930-1BV

7ML1930-1BX

7ML1930-1BY

7ML1930-6AL

7ML1930-6AM

7ML1930-6AN

7ML1930-1CK

7ML1930-1CL

7ML1930-1CM

7ML1930-1CN

7ML1930-1CP

7ML1930-1CQ

7ML1930-1CR

7ML1930-1CS

7ML1930-1CT

7ML1930-1CU

7ML1930-1CV

7ML1930-1CW

7ML1930-1CX

7ML1930-1CY

7ML1930-1DA

7ML1930-1BT

7ML1930-1BU

7ML1930-1BV

7ML1930-1BW

7ML1930-1BX

7ML1930-1BY

7ML1930-6AH

7ML1930-6AK

7ML1930-1CC

7ML1930-1CF

7ML1930-1BP

7ML1930-1BQ

7ML1930-1CG

7ML1930-1CH

7ML1930-1CJ

7ML1930-1CK

7ML1930-1CL

7ML1930-1CM

7ML1930-1BR

7ML1930-1BS

7MH7723-1JE

7MH7724-1AF

7MH7724-1AG

7MH7724-1AH

7MH7724-1AJ

7MH7724-1BQ

7MH7724-1AK

7MH7724-1BR

7MH7724-1BS

7MH7724-1BT

7MH7724-1BU

7MH7724-1BV

7MH7723-1NF

7MH7723-1SK

7MH7723-1JA

7MH7723-1SA

7MH7723-1SB

7MH7723-1SC

7MH7723-1SD

7MH7723-1SE

7MH7723-1SG

7MH7723-1SH

7MH7723-1SJ

7MH7723-1SY

A5E03623963

7MH7723-1HV

7MH7723-1HY

7MH7723-1HW

7MH7723-1SN

7MH7723-1JA

7MH7723-1JE

A5E50846036003

A5E50846036001

A5E50846036002

7MH7723-1SF

7MH7723-1SG

7MH7723-1HP

7MH7723-1HQ

7MH7723-1HR

7MH5103-2PD00

7MH103-3AD00

7MH5103-3ED00

7MH5103-3GD00

7MH5103-3KD00

7MH5103-3PD00

PBD-23900224

PBD-23900224

PBD-23900225

PBD-61009735

PBD-61009731

PBD-61009732

PBD-61009733

PBD-61009734

PBD-61010081

PBD-61010082

PBD-61010742

PBD-61010743

PBD-61010741

PBD-54000161

PBD-20250015

7MH7725-1AC

7MH7725-1AD

7MH7725-1AE

7MH7725-1AF

7MH7725-1AG

7MH7725-1AH

PBD-23900005

PBD-23900010

PBD-23900012

7MH7725-1BN

7MH7725-1BP

7MH7725-1BQ

石化 /油气：输油管道球阀、调节阀、紧急切断阀

煤化工：气化炉、煤浆管道阀门

水处理：污水厂气动蝶阀、闸阀

6. 常见故障与排查

无信号输出：供电异常、霍尔元件损坏、接线松动 → 检查 24V电源、重新接线、更换开关

信号抖动 / 误报：安装偏移、磁场干扰 →重新校准安装位置、远离强磁场设备

进水 / 腐蚀：密封老化、环境恶劣 →更换密封圈、改善防护环境