DWYER PG系列气用微压/微差压开关

DWYER PG系列气用微压/微差压开关 

选型表：

型号 范围 *大死区 开关类型
 PG-153-P1 1-30" water (.25-7.47 kPa) 1.9" w.c. (0.47 kPa) SPDT Mercury
 PG-153-P2 0.5-5 psid (.03-3.45 bar) 0.4 psid (0.38 bar) SPDT Mercury
 PG-3-P1 1-30" water (.25-7.47 kPa) 1.3" w.c. (0.32 kPa) SPST Mercury¹
 PG-3-P2 0.5-5 psid (.03-3.45 bar) 0.3 psid (0.21 kPa) SPST Mercury¹
 PG-7000-153-P1 1-30" water (.25-7.47 kPa) 4" w.c. (1.0 kPa) SPDT Snap
 PG-7000-153-P2 0.5-5 psid (.03-3.45 bar) .5 psid (.035 bar) SPDT Snap
 PG-7000-153HS-P1 1-30" water (.25-7.47 kPa) 4" w.c. (1.0 kPa) SPDT Hermetically Sealed Silver Snap
 PG-7000-153HG-P1 1-30" water (.25-7.47 kPa) 4" w.c. (1.0 kPa) SPDT Hermetically Sealed Gold Snap

举例 PG     153 P1 PG-153-P1 (Vacuum) (Pressure) (Differential Pressure) Control, fixed deadband, automatic reset, SPDT mercury switch, adjustable range 1.0-30" w.c. (25-760 bar). UL FM CSA
结构 PG         General purpose enclosure, NEMA-1 (standard) UL FM CSA
复位操作 PR         Manual reset, operates on pressure increase automatically, resets on decrease1 UL FM CSA
 PRL         Manual reset, operates on pressure decrease automatically, resets on increase1  UL FM CSA
封装选项   W       Weather-resistant enclosure, NEMA-2, 3R   FM CSA
  E       Explosion-proof enclosure, NEMA-7, 9, Class I, Groups C & D; Class II, Groups E, F & G, includes drain, specify if for pressure, vacuum or differential pressure.      
电路(开关)
选项
(For Electrical
Codes see Chart
Below)       2    SPST mercury switch, elect. code K†, opens on vacuum, pressure or differential pressure increase UL FM CSA
      2P   SPST mercury switch, elect. code L†, opens on vacuum, pressure or differential pressure increase UL FM CSA
      3   SPST mercury switch, elect. code K†, closes on vacuum, pressure or differential pressure increase UL FM CSA
      3P   SPST mercury switch, elect. code L†, closes on vacuum, pressure or differential pressure increase UL FM CSA
      153   SPDT mercury switch, elect. code M† UL FM CSA
      103   DPST, two SPST mercury switches, elect. code L†, both close on increase, FM approved, PG, PGW only  UL FM CSA
      105   DPST, two SPST mercury switches, one elect. code L†, one elect. code N, both open on decrease UL FM CSA
      127   DPST, two SPST mercury switches, elect. code L†, both open on increase UL FM CSA
      129   DPST, two SPST mercury switches, one elect. code L†, one elect. code N, both open on increase  UL FM CSA
      158   SPDT, two SPST mercury switches, one elect. code L† - opens on increase, one elect. code N - closes on increase UL FM CSA
      161   SPDT, two SPST mercury switches, one elect. code L† - opens on decrease, one elect. code N - closes on decrease UL FM CSA
      156   SPDT, two SPST mercury switches, elect. code L†, one- opens on increase, one closes on increase UL FM CSA
      804   DPDT, two SPDT mercury switches, elect. code M†      
      (__)   Other circuits available, consult factory      
    7000 153   SPDT, snap acting switch, rated 15A at 120 VAC, 8A at 240 VAC, 0.5A at 120 VDC, .25A at 240 VDC (1)      
      153HS   SPDT, Hermetically sealed snap switch, rated 5A at 125/250 VAC, 5A resistive at 30 VDC UL    
      153HG   SPDT, Hermetically sealed gold contact snap switch, rated 1A at 125 VAC, 1A resistive at 30 VDC UL    
    7200 804   DPDT, two SPDT snap acting switches, rated 5A at 120/240 VAC, 30 VDC resistive (1)      
可调压差范围
         P1 Adjustable range 1.0-30" w.c. (25-760 bar), maximum sustained pressure 2 psig* (0.14 bar) UL FM CSA
        P2 Adjustable range 0.5-5 psig (.03-.35 bar), maximum sustained pressure 10 psig* (0.69 bar) UL FM CSA
* Maximum sustained pressure 15 psig (1.0), maximum surge limit 20 psig (1.4), both ranges when used as single pressure switch with low pressure port vented to atmosphere.
1   7000-153 and 7200-804 not available with PR or PRL manual reset.
 † See Electrical Rating Chart Below.

CODE RATING AC or DC
K 6A at 120 V, 3A at 240 V
L 10A at 120 V, 5 A at 240 V
M 4A at 120 V, 2A at 240 V
N 1A at 120 V, 0.5A at 240 V