SERIES 1000W | MERCOID® BY DWYER
WEATHERPROOF DIAPHRAGM OPERATED PRESSURE SWITCH
Visible Set point, Fixed Deadband, Pressure Ranges to 1400 psi
1-3/4
[44.45]
[78.56]
5/8
[15.88]
7-17/64
[184.53]
3-3/4
[95.25]
3/4 FEMALE
[57.15]
NPT CONDUIT CONNECTION
Ø17/64 [6.75] MOUNTIN
HOLES TYP 4 PLACES
PRESSURE
With extremely rugged construction the Series 1000W Weatherproof Diaphragm
Operated Pressure Switch provides excellent reliability in chemical, petroleum and
industrial plants. Bellville spring movement permits mounting of control in any position
and helps prevent contact chatter. New design also provides high over-pressure
protection. Weatherproof housing is standard.
FEATURES/BENEFITS
• Weatherproof housing is ideal for a wide variety of applications where dust or water
is present
• Spring movement design provides for control in any mounting position and prevents
contact chatter reducing false or inconsistent switching
APPLICATIONS
• Chemical, petroleum, food and drug
processing industries
• Process and Industrial applications
MODEL CHART
Aluminum Pressure Chamber
Polyamide Diaph. Model
1003W-A1-D
1004W-A1-D
1005W-A1-D
1006W-A1-D
1007W-A1-D
1008W-A1-D
1009W-A1-D
*Deadband 10-15% larger when using 316 SS diaphragm.
Note: To order, change A1 to B2 for 316 SS diaphragm and pressure chamber.
Example: 1003W-B2-D. Values shown are for mid-scale.
2-9/32
1/32
[34.13] 1/4 FEMALE
SPECIFICATIONS
Wetted Materials: See pressure
chamber and diaphragm material in
model chart.
Temperature Limits: -30 to 170°F (-35
to 77°C).
Pressure Limit: 3000 psig (206.8 bar).
Enclosure Rating: Weatherproof, meets
NEMA 4X (IP66).
Switch Type: SPDT snap switch.
Electrical Rating: 15 A @ 125/250 VAC
resistive.
316 SS Pressure Chamber
FEP Diaph. Model
1003W-B3-D
1004W-B3-D
1005W-B3-D
1006W-B3-D
1007W-B3-D
1008W-B3-D
1009W-B3-D
[57.94]
NPT PRESSURE
2-21/32
[67.47]
Adjustable Operating
Range psig (bar)
5 to 40 (.48 to 2.8)
10 to 70 (.69 to 4.8)
25 to 200 (1.7 to 13.8)
50 to 350 (3.5 to 24.1)
75 to 550 (5.2 to 37.9)
100 to 900 (6.9 to 62.1)
200 to 1400 (13.8 to 96.5)
4-1/2
[114.30]
5 [127.00]
Electrical Connections: Screw type.
Conduit Connection: 3/4˝ female NPT.
Process Connection: 1/4˝ female NPT.
Mounting Orientation: Any position.
Set Point Adjustment: Internal
thumbwheel.
Weight: 3 lb (1.4 kg).
Deadband: See model chart.
Agency Approvals: UL.
Approx.* Deadband
(Fixed) psig (bar)
2 (.14)
4 (.28)
8 (.55)
15 (1.0)
30 (2.1)
50 (3.5)
75 (5.2)