Two opposing
bellows in the Model DP differential pressure
switch result in maximum sensitivity, quick response to
changes and good vibration resistance. Choice of brass or
316 stainless steel assures broad media compatibility. Setpoint
adjustment is easy thanks to external knobs and large, clear
scale reading directly in psid.
A wide variety of switches and circuit styles
enables exactly the specific type of control function needed
for any system. Mercury switches are a good choice for humid
areas while snap switches are better able to resist vibration.
Various operations possible include single adjustment -
fixed deadband, double adjustment - adjustable deadband,
manual reset (increasing or decreasing pressure) and two
stage with each SPST or SPDT switch independently adjustable.
Standard enclosure is NEMA-1 style. Optional weatherproof
construction is for outdoor use and explosion-proof enclosure
meets requirements for Class I, Groups C & D; Class
II, Groups E, F & G.
SPECIFICATIONS
Wetted Materials: Brass on ranges 61, 62, 63 or 316SS
on ranges 62E, 64E 65E.
Temperature Limits: -10 to 180°F (-23 to 82°C).
Pressure Limit: Maximum pressure of the operating
range.
Enclosure Rating: General purpose, weatherproof or
explosion-proof.
Switch Type: Mercury or snap switch, see "Ordering"
page.
Electrical Rating: See "Ordering" page.
Electrical Connection: Screw terminal.
Conduit Connection: General purpose: 1/2" hole for
conduit hub. Weatherproof: 1/2" conduit hub. Explosion-proof:
3/4" NPT female.
Process Connection: General purpose and weatherproof:
1/8" NPT female. Explosion-proof: 1/4" NPT male.
Mounting Orientation: Vertical.
Set Point Adjustment: Thumbscrew.
Weight: General purpose: 5 lb (2.3 kg). Weatherproof:
7 lb (3 kg). Explosion-proof: 25 lb (11 kg).
SWITCH
DEADBAND - SINGLE STAGE psid (kg/cm2)
| RANGE
NUMBER |
RANGE
psid |
MAX.
PRESS.
psi |
APPROX.
DEADBAND
WITH MERCURY SWITCH |
APPROX.
DEADBAND
WITH SNAP SWITCH |
| ADJ.
MIN. |
FIXED |
ADJ.
MIN. |
FIXED |
2
FIXED |
| DPA-33 |
DPA-533 |
DPS-233 |
DPA-7033-153 |
DPS-7233-153 |
DPS-7233-804 |
| 61 |
0-10
(0-0.7) |
50
(3.5) |
1
(0.07) |
.75
(0.053) |
.38
(0.027) |
1.5
(0.11) |
.5
(0.035) |
.6
(0.042) |
| 62 |
0-20
(0-1.4) |
100
(7.0) |
1.5
(0.11) |
1
(0.07) |
.5
(0.035) |
2.5
(0.18) |
1
(0.07) |
1
(0.07) |
| 64 |
0-30
(0-2.1) |
300
(21) |
3
(0.21) |
2
(0.14) |
.75
(0.053) |
6
(0.42) |
1.5
(0.11) |
1.5
(0.11) |
| |
|
|
DPA-43 |
DPA-543 |
DPS-243 |
DPA-7043-153 |
DPS-7243-153 |
DPS-7243-804 |
| 62E |
0-20
(0-1.4) |
100
(7.0) |
2
(0.14) |
1.5
(0.11) |
1
(0.07) |
3
(0.21) |
1.5
(0.11) |
1.5
(0.11) |
| 64E |
0-30
(0-2.1) |
300
(21) |
3.5
(0.25) |
2.5
(0.18) |
1.5
(0.11) |
6
(0.42) |
2
(0.14) |
2.5
(0.18) |
| 65E |
0-80
(0-5.6) |
600
(42) |
16
(1.12) |
4
(0.28) |
3
(0.21) |
20
(1.4) |
6
(0.42) |
8
(0.56) |
SWITCH
DEADBAND - TWO STAGE psid (kg/cm2)
| RANGE
NUMBER |
RANGE
psid |
MAX.
PRESS.
psi |
DPA-400
WITH MERCURY SWITCHES |
DPA-7400
WITH SNAP SWITCHES |
| MIN.
SPREAD
BETWEEN SWITCHES |
FIXED
DEADBAND APPROX. |
MINIMUM
SPREAD
BETWEEN SWITCHES |
FIXED
DEADBAND
APPROX. 2 FIXED |
| DPA-433 |
DPA-433 |
DPA-7433 |
DPA-7433 |
| 61 |
0-10
(0-0.7) |
50
(3.5) |
2
(0.14) |
.5
(0.035) |
1.5
(0.11) |
.6
(0.042) |
| 62 |
0-20
(0-1.4) |
100
(7.0) |
4
(0.28) |
1
(0.07) |
3
(0.21) |
1
(0.07) |
| 64 |
0-30
(0-2.1) |
300
(21) |
8
(0.56) |
1.5
(0.11) |
6
(0.42) |
1.5
(0.11) |
| |
|
|
DPA-443 |
DPA-443 |
DPA-7443 |
DPA-7443 |
| 62E |
0-20
(0-1.4) |
100
(7.0) |
4
(0.28) |
.75
(0.053) |
3.5
(0.25) |
1.5
(0.11) |
| 64E |
0-30
(0-2.1) |
300
(21) |
8
(0.56) |
1
(0.07) |
6.5
(0.46) |
2.5
(0.18) |
| 65E |
0-80
(0-5.6) |
600
(42) |
16
(1.12) |
6
(0.42) |
20
(1.4) |
12
(0.84) |
OPTIONS
- Consult factory for pricing
Weatherproof Housing - to
order add "W" suffix after DPA. Example: DPAW-7033-153-61.
Explosion-proof Housing - to order add
"E" suffix after DPA. Example: DPAE-7033-153-61.
|
