Top Mount – Float Type

Top Mount – Float Type
pg126
6/26/06
11:27 AM
Page 1
Series
401
Top Mount – Float Type
Single or Two Stage for Pump or Alarm, Depth to 12 ft.,
Specific Gravity to 0.50, Hermetically Sealed Switches
TYPE 401-1 SINGLE STAGE
ADJUSTABLE HI AND LO
OPERATING LEVELS
BOTTOM OF TANK
TYPE 401-2 TWO STAGE
ADJUSTABLE OPERATING LEVELS
PLUS HI LEVEL ALARM OR TRIP.
LOWER STAGE IS OPERATING CIRCUIT.
UPPER STAGE IS ALARM OR TRIP.
OPERATING
POINT ON RISE
(ADJUSTABLE)
UPPER STAGE ADJUSTABLE
DIFFERENTIAL
B
TB
BOTTOM OF TANK
401-4
FLANGE
UPPER
STAGE
ALARM
RESET 1-1/4⫾1/8 FIXED
7/8⫾1/8 [31.75⫾3.175]
[22.22⫾3.175]
BOTTOM OF TANK
A
3/8⫾1/8 FIXED
[9.525⫾3.175]
B
OPERATING
POINT ON DROP
(ADJUSTABLE)
TB
FLANGE
OPERATING
POINT ON RISE
(ADJUSTABLE)
A
LOWER STAGE FIXED
ALARM
RESET
OPERATING POINT ON RISE
(ADJUSTABLE)
3/8⫾1/8
[9.525⫾3.175]
UPPER STAGE
7/8⫾1/8 A
[22.22⫾3.175]
FIXED
OPERATING POINT
ON DROP
(ADJUSTABLE)
B
ALARM
LOWER STAGEADJUSTABLE
DIFFERENTIAL
OPERATING POINT
ON DROP
(ADJUSTABLE)
A
401-3
FLANGE
®
ADJUSTABLE
SPREAD
401-2
FLANGE
ADJUSTABLE
DIFFERENTIAL
OPERATING POINT
ON RISE
(ADJUSTABLE)
401-1
®
B
RESET
LOWER
STAGE
1⫾1/4 FIXED
[25.40⫾6.350]
OPERATING POINT ON
DROP (ADJUSTABLE) TB
ALARM POINT
ON DROP
TYPE 401-3 TWO STAGE
ADJUSTABLE OPERATING LEVELS PLUS
LO LEVEL OR ALARM OR TRIP. LOWER
STAGE IS ALARM OR TRIP CIRCUIT.
UPPER STAGE IS OPERATING CIRCUIT.
RESET
BOTTOM OF TANK
TYPE 401-4 TWO STAGE
HI AND LO ALARM OR TRIP WITH
ADJUSTABLE SPREAD BETWEEN STAGES.
LOWER STAGE IS LO LEVEL ALARM OR
TRIP CIRCUIT. UPPER STAGE IS HI LEVEL
ALARM OR TRIP CIRCUIT.
DIMENSIONS – TYPE 401 - 1, 2, 3, 4 – CHART A
Level
APPROXIMATE MAXIMUM & MINIMUM OPERATING DEPTHS IN INCHES BELOW TOP OF FLANGE FOR STANDARD GUIDE ROD
LENGTHS AT VARIOUS SPECIFIC GRAVITIES. FIGURES MAY VARY ± 29(50 mm) DEPENDING ON FLOAT SIZE.
UPPER FIGURE - INCHES
LOWER FIGURE - METRIC
MINIMUM
MAXIMUM FOR “B” — DISTANCE BELOW TOP OF FLANGE FOR OPERATION
“A”
“B”
SP. GR. 1.0
SP. GR. 0.72
SP. GR. 0.62
SP. GR. 0.5
FLOATS
GUIDE RODS
GUIDE RODS
GUIDE RODS
GUIDE RODS
C = COPPER
SP. GR. 1.0
SS =
SLIGHTLY LESS
48
88
128
48
88
128
48
88
128
48
88
128
STAINLESS
FOR
1.22 M 2.44 M 3.66 M 1.22 M 2.44 M 3.66 M 1.22 M 2.44 M 3.66 M 1.22 M 2.44 M 3.66 M
STEEL
0.72, 0.62, 0.5
3 1/29 69 SS
13
15
46
93
141
*45
*92
*126
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
33cm 38 cm 1.17 M 2.36 M 3.58 M 1.14 M 2.33 M 3.2 M N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
4 1/29 C
13
15
46
93
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
33 cm 38 cm 1.17 M 2.36 M 3.58 M N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
4 1/29 SS
13
15
46
93
141
45
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
33 cm 38 cm 1.17 M 2.36 M 3.58 M 1.14 M N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
N.A.
79 SS
13
15
46
93
141
45
92
140
44
92
140
44
92
140
33 cm 38 cm 1.17 M 2.36 M 3.58 M 1.14 M 2.33 M 3.56 M 1.18 M 2.33 M 3.56 M 1.18 M 2.33 M 3.56 M
*Available for Type 401-1 and 3 only.
DIMENSIONS TB & B (see diagrams). Minimum distance below flange required for clearance for following guide rod lengths: 49 1/29 for
4 ft. rod; 97 1/29 for 8 ft rod; 145 1/29 for 12 ft rod. All dimensions are approximate and will vary slightly depending on specific gravity, float
material and size. Critical dimensions must be verified with the factory before placing order.
3
These heavy duty top-mounted liquid level controls oper-
SPECIFICATIONS
ate in pressurized or non-pressurized tanks and sumps with
pressures to 600 psi and temperatures to 500°F. They can be
ordered to operate at depths to 12 feet with a 12 foot guide
rod. Adjustable in single stage and two stage operation to
provide action such as operating a pump; pump and high
alarm or shutdown; pump and low alarm, or high and low
alarm; or high, high alarm; or low, low alarm. Alarm functions can also be used as shutdowns. Series 401 is available
in mercury or snap action contact switches. The charts on
these pages indicate the range of floats, flange sizes, operating depths, guide rods and electrical circuits offered. Specific gravity applications from 0.5 to 1.0.
Minimum Specific Gravity: See chart A.
Temperature Rating: –20°F (–29°C) to 500°F (260°C).
Switch Type: Snap action or mercury.
Electrical Rating: See charts D and E.
Wiring Connections: G, WT or E enclosure, terminal block. EV enclosure, 189 (460 mm) leads.
Process Connection: Top mount flange.
Enclosures: G, painted steel and aluminum; WT, painted steel, aluminum
and neoprene; E, aluminum; EV, aluminum and neoprene.
Wetted Parts: Depends on configuration. Check charts A, B, and C.
Weights: Electrical head and float assembly only: G, WT 10 lb (4.5 kg); E,
EV 14 lb (6.3 kg). Flange only: 49, 17 lb (7.7 kg); 59, 20 lb (9 kg); 69, 27 lb
(12.3 kg); 89, 47 lb (21.3 kg). Guide rods assembly: 4 ft (1.2 m), 14 lb (6.4
kg); 8 ft (2.4 m), 28 lb (12.7 kg); 12 ft (3.6 m), 42 lb (19 kg).
Suggested Specifications
Liquid level control shall be top flange mounted, float operated,
with (Brass)(Stainless Steel) guide rod assembly for operation to
(4)(8)(12) foot depth. Float and flange shall be sized for intended
specific gravity. Operation shall be 401-1 (pump), 401-2 (pump and
high alarm), 401-3 (pump and low alarm), 401-4 (high and low
alarm), Circuit shall be (SPST) (SPDT) (DPDT) hermetically sealed
snap action (mercury) switch. Switch mechanism shall be gravity
return. Enclosure shall be general purpose (weatherproof) (explosion-proof) (explosion-proof - vapor proof).
APPLICATIONS
Oil refineries, chemical plants, power generating stations,
pumping stations, sanitary/waste water facilities, tank and
vessels.
126
VISIT OUR WEBSITES:
www.dwyer-inst.com
•
www.dwyer-inst.co.uk
•
www.dwyer-inst.com.au
pg127
3/8/06
9:49 AM
Page 1
MODEL CHART – SERIES 401
401 1 WT 7810
2
EXAMPLE
CONSTRUCTION
3
4
XX A 1.0 48 1 401-1-WT-7810-A-1.0-48-1 Single stage with adjustable deadband. Normally used for pump operation.
Two stage. Lower stage has adjustable deadband. Upper stage has fixed deadband. Normally used for
pump operation and high alarm or shutdown.
Two stage. Upper stage has adjustable deadband. Lower stage has fixed deadband. Normally used for
pump operation and low alarm or shutdown.
Two stage. Each stage has fixed deadband with adjustable deadband between stages. Normally used for
high and low alarm or shutdown.
UL
UL
CSA
CSA
UL
CSA
UL
CSA
General purpose NEMA-1 enclosure.
Water tight enclosure suitable for NEMA-1, 2, 3, 4,4X.
Explosion proof enclosure, NEMA-7, 9. Class I Groups B, C, D. Class II Groups E, F, G. Division I and II.
(CSA approved Groups C, D, E, F, G only).
Explosion proof – vapor proof enclosure. NEMA-7, 9. Class I Groups B, C, D. Class II Groups E, F, G.
Division I and II.
UL
UL
UL
CSA
G
WT
E
ENCLOSURES
EV
48XX
48XX
XX
78XX
78XX
XX
78XXHM
98XX
CIRCUITS
98XX
CSA
UL
Single stage. Mercury switch. See Chart D.
Two stage. Mercury switch. See Chart D.
Single stage. Snap switch. See Chart D.
Two stage. Snap switch. See Chart E.
Hermetically sealed snap switch. See Chart E.
Single stage. High capacity DC snap switch. Use heat fins (HF) if process temperature exceeds 350°F
(177°C). Do not exceed 450°F (232°C). See Chart E.
Two stage. High capacity DC snap switch. Use heat fins (HF) if process temperature exceeds 350°F
(177°C). Do not exceed 450°F (232°C). See Chart E.
XX
A
1.0
Float, float rod and stops. See Chart B.
Specific gravity of process fluid. See Chart A on previous page for operating limits.
48
Operating point. See Chart A for operating limits.
1 Flange size, material, rating and guide rod assembly. See Chart C
FLOAT, FLOAT ROD AND STOPS – CHART B
3
3
3
3
MATERIAL
304SS Float
304SS Float
Copper Float
316SS Float
304SS Float
PRESS/TEMP MAX.
300 PSI (21 BAR) 500°F (260°C)
300 PSI (21 BAR) 500°F (260°C)
150 PSI (10 BAR) 300°F (149°C)
300 PSI (21 BAR) 500°F (260°C)
300 PSI (21 BAR) 500°F (260°C)
3
FLANGE
CODE
SIZE
1 59 125# CI
2 59 125# CI
3 59 125# CI
4 59 125# CI
5 59 125# CI
6 59 125# CI
7 59 150# CS
8 59 150# CS
9 59 150# CS
10 59 150# CS
11 59 150# CS
12 59 150# CS
GUIDE ROD
CODE
LENGTH MATERIAL
48 (1.2 M)
Brass
13
88 (2.4 M)
Brass
14
128 (3.6 M) Brass
15
48 (1.2 M) 303SS
16
88 (3.6 M) 303SS
17
128 (3.6 M) 303SS
18
48 (1.2 M)
Brass
19
88 (2.4 M)
Brass
20
128 (3.6 M) Brass
21
48 (1.2 M) 303SS
22
88 (2.4 M) 303SS
23
128 (3.6 M) 303SS
24
FLANGE
SIZE
69 125# CI
69 125# CI
69 125# CI
69 125# CI
69 125# CI
69 125# CI
69 150# CS
69 150# CS
69 150# CS
69 150# CS
69 150# CS
69 150# CS
STOPS
Brass Stops
316SS Stops
Brass Stops
316SS Stops
316SS Stops
FLANGE AND GUIDE ROD
ASSEMBLY FOR: 41⁄29
(114 mm) FLOAT – CHART C
FLANGE AND GUIDE ROD ASSEMBLY FOR:
31⁄2 69 (89 152.4 mm) FLOAT – CHART C
3
ROD
303SS Rod
303SS Rod
303SS Rod
303SS Rod
303SS Rod
Level
CODE
SIZE
A 3 1/29 6” (89 152.4 mm)
B 3 1/29 6” (89 152.4 mm)
C
4 1/29 (114 mm)
D
4 1/29 (114 mm)
E
79 (178 mm)
GUIDE ROD
LENGTH MATERIAL
48 (1.2 M)
Brass
88 (2.4 M)
Brass
128 (3.6 M) Brass
48 (1.2 M)
303SS
88 (2.4 M)
303SS
128 (3.6 M) 303SS
48 (1.2 M)
Brass
88 (2.4 M)
Brass
128 (3.6 M) Brass
48 (1.2 M)
303SS
303SS
88 (2.4 M)
128 (3.6 M) 303SS
CODE
25
26
27
28
29
30
31
32
33
34
35
36
FLANGE
SIZE
69 125# CI
69 125# CI
69 125# CI
69 125# CI
69 125# CI
69 125# CI
69 150# CS
69 150# CS
69 150# CS
69 150# CS
69 150# CS
69 150# CS
FLANGE AND GUIDE ROD
ASSEMBLY FOR:
79 (178 mm) FLOAT – CHART C
GUIDE ROD
LENGTH MATERIAL
48 (1.2 M)
Brass
88 (2.4 M)
Brass
128 (3.6 M) Brass
48 (1.2 M) 303SS
88 (2.4 M) 303SS
128 (3.6 M) 303SS
48 (1.2 M)
Brass
88 (2.4 M)
Brass
128 (3.6 M) Brass
48 (1.2 M) 303SS
88 (2.4 M) 303SS
128 (3.6 M) 303SS
CODE
37
38
39
40
41
42
43
44
45
46
47
48
FLANGE
SIZE
89 125# CI
89 125# CI
89 125# CI
89 125# CI
89 125# CI
89 125# CI
89 150# CS
89 150# CS
89 150# CS
89 150# CS
89 150# CS
89 150# CS
GUIDE ROD
LENGTH MATERIAL
48 (1.2 M)
Brass
88 (2.4 M)
Brass
128 (3.6 M)
Brass
48 (1.2 M)
303SS
88 (2.4 M)
303SS
128 (3.6 M)
303SS
48 (1.2 M)
Brass
88 (2.4 M)
Brass
128 (3.6 M)
Brass
48 (1.2 M)
303SS
88 (2.4 M)
303SS
128 (3.6 M)
303SS
ELECTRICAL CIRCUITS AND RATINGS
ELECTRICAL RATINGS IN AMPS
ORDERING CODE
AC
DC
TWO STAGE
SWITCH
SINGLE
ACTION
120V
240V
440V
30V
125V
250V
STAGE
LOWER UPPER
SP-ST Open on level FALL
10
5
3†
10
5
-4820
-4820
-21
SP-ST Open on level RISE
10
5
3†
10
5
-4821
-4821
-20
SP-DT One Switch
4
2
1†
4
2
-4810
-4810
-10
Mercury
SP-DT Two switches E.I.*
10
5
3†
10
5
-4815
-4815
-15
Contacts
DP-ST Two switches E.I.* Open on level FALL
10
5
3†
10
5
-4814
-4814
-13
DP-ST Two switches E.I.* Open on level RISE
10
5
3†
10
5
-4813
-4813
-14
DP-DT Two SP-DT switches
4
2
1†
4
2
-4806
-4806
-06
CHART E
SP-DT One switch
12
5
3†
0.5**
0.25**
-7810
-7810
-10
DP-DT Two SP-DT switches
12
5
3†
0.5**
0.25**
-7806
-7806
-06
SP-DT One hermetically sealed switch
5
5
5**
-7810HM -7810HM -10HM
Snap
DP-DT Two hermetically sealed SP-DT switches
5
5
5**
-7806HM -7806HM -06HM
Action
Contacts
DP-DT Two SP-DT switches
10
3
10‡
3‡
-9806
-9806
-06
SP-DT One switch
10
3
10‡
3‡
-9810
-9810
-10
*Electrically Independent
†Available on special order. Change 1st digit in Ordering Code from 4 to 5 or 7 to 8
‡10 Amp inductive (Polarized) at 125 VDC
i.e. -4820 becomes -5820, -7810 becomes -8810, etc.
**Resistive
SWITCH
TYPE
CHART D
CALL TO ORDER:
U.S. Phone 219 879-8000
•
U.K. Phone (+44) (0)1494-461707
•
Asia Pacific Phone 61 2 4272-2055
UL
UL
UL
UL
UL
UL
UL
UL
UL
CSA
CSA
CSA
CSA
CSA
CSA
CSA
CSA
CSA
127
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