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Series DP Double Bellows Differential Pressure Switch
MODEL CHART
EXAMPLE
DPA
 
_ _33
_153
    61 DPA-33-153-61- Differential Pressure Control, brass bellows, adjustable deadband, automatic reset, SPDT mercury switch, adjustable range 0-10 psid (0-0.7), operating range 30" Hg vac - 50 psig (75 cm Hg vac - 3.5)  
CONSTRUCTION
DP_
 
 
 
      General purpose enclosure, NEMA -1 (standard) CSA
RESET
OPTIONS
A
 
 
 
      Automatic reset, adjustable deadband, double adjustment  
R
 
 
 
  U   Manual reset, single adjustment, operates on decrease automatically CSA
R
 
 
 
  L   Manual reset, single adjustment, operates on increase automatically CSA
S
 
 
 
      Automatic reset, fixed deadband, single adjustment  
HOUSING
OPTIONS
 
W
 
 
      Weatherproof enclosure, NEMA-3R, 4, 4X CSA
 
E
 
 
      Explosion-proof enclosure, NEMA-7, 9, Class I, Groups C & D, Class II, Groups E, F & G CSA
CIRCUIT
(SWITCHING)
OPTIONS

For electrical code see chart below.
 
 
 
2
      SPST mercury switch, elect. code A, opens on differential pressure increase CSA
 
 
 
3
      SPST mercury switch, elect. code A, closes on differential pressure increase CSA
 
 
 
153
      SPDT mercury switch, elect. code B CSA
 
 
 
156
      SPDT, 2 each SPST mercury switches, 1 each opens on differential pressure increase, 1 each closes on differential pressure increase, elect. code A CSA
 
 
 
804
      DPDT, 2 each SPDT mercury switches, elect. code B CSA
 
 
 
( )
      Other circuits available, consult factory  
S
 
2_ _
2
      SPST magnetic mercury switch, elect. code I, opens on differential pressure increase, fixed deadband CSA
S
 
2_ _
3
      SPST magnetic mercury switch, elect. code I, closes on differential pressure increase, fixed deadband CSA
 
 
4_ _
4122
      2 stage, 2 each SPST magnetic mercury switches, 1 each opens on differential pressure increase, 1 each opens on further increase, elect. rating per note †† below CSA
 
 
4_ _
4132
      2 stage, 2 each SPST magnetic mercury switches, 1 each closes on differential pressure increase, 1 each closes on decrease, both open mid range, elect. rating per note †† below CSA
 
 
4_ _
4129
      2 stage, 2 each SPST magnetic mercury switches, 1 each closes on differential pressure increase, 1 each closes on further increase, elect. rating per note †† below CSA
 
 
4_ _
4123
      2 stage, 2 each SPST magnetic mercury switches, 1 each opens on differential pressure increase, 1 each opens on decrease, both close mid range, elect. rating per note †† below CSA
 
 
5_ _
2
      SPST magnetic mercury switch, elect. code H, opens on differential pressure increase, narrow adjustable deadband CSA
 
 
5_ _
3
      SPST magnetic mercury switch, elect. code H, closes on differential pressure increase, narrow adjustable deadband CSA
 
 
70_ _
153
      SPDT snap acting switch, elect. code D, adjustable deadband  
 
 
70_ _
804
      DPDT, 2 each SPDT snap acting switches, consult factory  
S
 
72_ _
153
      SPDT snap acting switch, fixed deadband, elect. code E per note ‡‡ below  
S
 
72_ _
804
      DPDT, 2 SPDT snap acting switches, fixed deadband, elect. code G per note ‡‡ below  
 
 
74_ _
 
      2 stage, 2 each SPDT snap acting switches, elect. code G per note ‡‡ below  
OPTION
 
 
 
 
B     Delrin bushed movement  
BELLOWS MATERIALS
 
 
_ _33
 
      Brass bellows, ranges 61, 62, 64 only CSA
 
 
_ _43
 
      Type 316 stainless steel bellows, ranges 62E, 64E, 65E only CSA
ADJUSTABLE
DIFFERENTIAL
PRESSURE
RANGES
OPERATING
PRESSURE
RANGES
      61       Adjustable range 0-10 psid, operating range 30" Hg vac - 50 psig, (75 cm Hg vac - 3.5) CSA
      62       Adjustable range 0-20 psid, operating range 30" Hg vac - 100 psig, (75 cm Hg vac - 7.0) CSA
      64       Adjustable range 0-30 psid, operating range 30" Hg vac - 300 psig, (75 cm Hg vac - 21) CSA
      62E       Adjustable range 0-20 psid, operating range 30" Hg vac - 100 psig, (75 cm Hg vac - 7.0) CSA
      64E       Adjustable range 0-30 psid, operating range 30" Hg vac - 300 psig, (75 cm Hg vac - 21) CSA
      65E       Adjustable range 0-80 psid, operating range 30" Hg vac - 600 psig, (75 cm Hg vac - 42) CSA
 
ELECTRICAL RATINGS
CODE
SUFFIX
AC CAPACITY
DC CAPACITY HP
AC
DC
120V
240V
440V
120V
240V
A
-2, -3, -156
10A
5A
3A
10A
5A
3/4
1/3
B
-153, -804
4A
2A
**
4A
2A
1/8
NA
D
-153
15A
15A
15A
0.5A
0.25A
1/8
NA
E
-153
15A
15A
NA
NA
G
-804
5A
5A
NA
NA
NA
H
-2, -3
5A
2A
NA
2.5A
1A
1/8
1/10
I
*-2, -3
0.5A
0.25A
NA
0.25A
0.15A
NA
NA
 
* Also rated 1.0A at 24 VAC.
1/4 HP at 120 VAC, 1/2 HP at 240 VAC.
DC controls up to 10A. Consult factory.
5A 30 VDC resistive.
** -153 Circuit available 1A, 440V on special order.
†† DP-433 & DP-443 rated 0.3A at 120 VAC, 0.15A at 240 VAC, 0.9A at 24 VAC, 0.15A at 120 VDC, 0.07A at 240 VDC. Manual reset no available.
‡‡ Manual reset not available.