Dwyer | Series 1000W | Instruction manual | Dwyer Series 1000W Instruction Manual

Dwyer Series 1000W Instruction Manual
Bulletin IN-1001
Series 1000W Diaphragm Operated Pressure Switches
Specifications - Installation and Operating Instructions
By Dwyer
1-3/4
[44.45]
3-3/32
[78.56]
2-9/32
[57.94]
This control is operated by a negative-rate Bellville spring-augmented diaphragm.
Location and Mounting
Select a location recommended by the equipment manufacturer. Use the four (4) lugs
on the case to mount the control on a panel or smooth wall surface, or mount directly
by the pressure connection.
The control is not position-sensitive and may be mounted in any position. However,
vertical is preferred when there is a possibility of sludge accumulation or condensed
water freezing in the pressure chamber.
Pressure Connection
The pressure connection is a standard female 1/4˝ NPT taper pipe thread. Pipe thread
sealant tape or pipe thread sealant should be used to assure a pressure-tight joint.
Wiring
A 3/4˝ conduit connection is provided for wiring. Wire in accordance with local
electrical codes or equipment manufacturer’s instructions. Use a short piece of BX
between rigid conduit and control so that control will not be subject to the stress of
conduit expansion and contraction. Electrical ratings are shown on the label.
DO NOT OVERLOAD
3/4 FEMALE
NPT CONDUIT CONNECTION
Ø17/64 [6.75] MOUNTING
HOLES TYP 4 PLACES
7-17/64
[184.53]
1-11/32
[34.13]
2-1/4
[57.15]
5/8
[15.88]
3-3/4
[95.25]
2-21/32
[67.47]
1/4 FEMALE
NPT PRESSURE
CONNECTION
4-1/2
[114.30]
5 [127.00]
SPECIFICATIONS
Wetted Materials: Aluminum pressure chamber with polyimide diaphragm or 316
SS pressure chamber with FEP diaphragm.
Temperature Limits: -30 to 170°F (-35 to 77°C).
Pressure Limit: 3000 psig (206.8 bar).
Enclosure Rating: Weatherproof, meets NEMA 4X.
Switch Type: SPDT snap switch.
Electrical Rating: 15A @ 125/250 VAC resistive.
Wiring 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 chart.
Agency Approvals: CE, UL.
Note: When used on steam, a pigtail siphon and Type 3 (FEP) diaphragm should be
used. Maximum case ambient temperature: 170° F (76.7° C).
Setting Operating Point
Remove the transparent cover over the adjusting wheel. Move the wheel by hand to
the desired pressure on the vertical scale. If the adjusting wheel is difficult to move,
a small screwdriver inserted in the adjusting wheel arms will provide extra leverage.
A stop is provided at the top and bottom of the scale to prevent setting beyond the
control’s range. Dial markings are for the High operating point. Switch will reset at
a lower pressure. Dial markings are a guide for setting. Actual setting should be
checked with a good pressure gage.
Warning: A failure resulting in injury or damage may be caused by over-pressures,
excessive vibration or pressure pulsation, excessive temperature, corrosion of
pressure-containing parts and movement assembly, electrical overload or other
misuse.
MERCOID
A DIVISION OF
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219/879-8000
www.dwyer-inst.com
Fax: 219/872-9057
e-mail: info@dwyermail.com
Operating Rages/Deadband
Range No.
3
4
5
6
7
8
9
psig (bar)
5-40 (0.34 - 2.76)
10-70 (0.69 - 4.82)
25 - 200 (1.72 - 13.78)
50 - 350 (3.45 - 24.12)
75 - 550 (5.17 - 37.90)
100 - 900 (6.89 - 62.01)
200 - 1400 (13.78 - 96.46)
Approx. Deadband (fixed)* psig (bar)
2 (0.14)
4 (0.28)
8 (0.55)
15 (1.03)
30 (2.07)
50 (3.45)
75 (5.17)
Max. press. without bursting
psig (bar)
3000 (206.7)
3000 (206.7)
3000 (206.7)
3000 (206.7)
3000 (206.7)
3000 (206.7)
3000 (206.7)
* Deadband is 10% larger when using 316SS diaphragm.
Electrical Rating
Code
D
J
No. Switches Action
1 Snap SPDT
1 Snap SPDT
Note (2) Resistive
AC Capacity
DC Capacity
125V 250V 480V 125V 250V
15A
15A
NA
15A
15A
15A 0.5A 0.25A
(2)
(2)
Horse Power
AC
125V
350V
1/8
1/4
1/8
1/4
DC
125V
NA
NA
250V
NA
NA
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