AT-3000MR/MRS ATEX/IECEx系列批准的Photohelic开关/压力表采用固态技术，将精密、高度可重复的压差开关功能与易于读取的大型模拟压力表结合在一起。仪表读数不受开关操作的影响，即使电源中断也能准确指示。AT102-3000MR系列采用多功能机电继电器，低电流额定值，是干电路的理想选择。对于需要高循环率的应用，请选择带有SPST（NO）固态继电器的AT102-3000MRS型号。易于调整的设定值指示器由位于仪表表面的旋钮控制（仪表断电后可接近的开口箱）。所有型号都提供低限和高限控制。与空气和其他不可燃、无腐蚀性气体相容。防火外壳配有玻璃窗，可查看设定点指针和过程压力。与空气和其他不可燃、非腐蚀性气体兼容。
 
安装的重要注意事项：
电缆必须通过1/2“NPT电缆密封套或ATEX/IECEx导管安装（不随仪表提供）。确保布线后关闭密封盖和电缆密封套，以保持IP66等级。仅在仪器断电后打开盖子。
产品应用
危险区域压力测量和切换气动输送空调系统洁净室排气系统
特点
仪表读数不受开关操作的影响，即使在断电时也会继续读取压力
零点和量程调整超出范围仪表意味着在正常使用中无需拆卸ԡ固态设计允许在高循环率应用中切换，而不会退化ԡ带有可选玻璃窗和铝制外壳的隔爆外壳在危险区域保护装置，同时提供过程压力和设定点状态的局部可视性

Service:Air and non-combustible, compatible gases.

Wetted Materials:Consult factory.

Housing Material:Aluminum.

Finishing:Texture epoxy coat RAL7015.

Accuracy:±2% of FS at 70°F (21.1°C). ±3% on -0, -60 Pa and ±4% on -00 models.

Pressure Limits:See pressure limit chart on the catalog page.

Temperature Limits:20 to 120°F. (-6.67 to 48.9°C). Option LT low temperature to -20°F (28.8°C) (Note:

Product temperature limits differ from case).

Power Requirements:24 VDC, regulated ±10%.

Electrical Wiring:Screw terminals.

Mounting Orientation:Diaphragm in vertical position.

Enclosure Rating:IP66.

Process Connections:1/8" NPT female brass (SS optional).

Electrical Connections:Two 1/2" NPT female. Cable gland not included.

Dial Size:4" (101.6 mm).

Set Point Adjustment:Adjustable knobs on face behind enclosure cover. Follow instructions and safety warnings to open cover.

Weight:13.2 lb (6 kg).

ATEX Certificate:EPT 19 ATEX 3192 X.

Agency Approvals:

ATEX Compliant:CE0477

EXII 2G Ex db IIC T5, T6 Gb -60°C ≤Ta ≤+50°C (T6) -60°C ≤Ta ≤+60°C (T5) II 2D Ex tb IIIC T75 °C Db IECEx Compliant: Ex db IIC T5, T6 Gb -60°C ≤Ta ≤+50°C (T6) -60°C ≤Ta ≤+60°C (T5) Ex tb IIIC T75°C Db.

SERIES AT-3000MR/MRS SERIES PHOTOHELIC GAGE           

     AT-102NA-XX-X-X-XX-XXXX MR/MRS PHOTOHELIC GAGE W/ ATEX ENCL

          1ST SYMBOL (1ST X) RANGE      
             3000       REQUIRES PICK FROM ADDITIONAL RANGES
             3300       REQUIRES PICK FROM ADDITIONAL RANGES
             3001       0-1    IN WC
             3002       0-2    IN WC
             3003       0-3    IN WC
             3004       0-4    IN WC
             3005       0-5    IN WC
             3006       0-6    IN WC
             3008       0-8    IN WC
             3010       0-10   IN WC
             3015       0-15   IN WC
             3020       0-20   IN WC
             3025       0-25   IN WC
             3030       0-30   IN WC
             3040       0-40   IN WC
             3080       0-80   IN WC
             3100       0-100  IN WC
             3150       0-150  IN WC
             3301       .5-0-.5   IN WC
             3302       1-0-1     IN WC
             3304       2-0-2     IN WC
             3310       5-0-5     IN WC
             3320       10-0-10   IN WC
             3330       15-0-15   IN WC
             3201       0-1    PSID
             3202       0-2    PSID
             3203       0-3    PSID
             3204       0-4    PSID
             3205       0-5    PSID