Dwyer Instruments DA-7035-153-8N, DA-7035-153-11N, DA-7035-153-1N, DA-7035-153-9N, DA-7035-153-3N User manual

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Bulletin IN-526-N
Installation Instructions (Preliminary) Series D-7000-(N) Remote Bulb Temperature Controls
ENCLOSURES – TYPE NO. PREFIX
GENERAL PURPOSE
Prefixed by
DA, DL, DR, DS
CONTROL NUMBERS
CIRCUITS (SWITCH OPERATION)
LOCATION AND MOUNTING OF CONTROL CASE
Follow equipment manufacturer’s instructions or proceed as follows: Vibration causes erratic operation of any instrument and shortens its life. It is important to select a location that is reasonably free of vibration. All controls must be mounted vertical and level. Delrin bushed movements prolong con­trol life by alleviating excessive wear of metal surfaces due to vibration and/or pulsation. It is identified by the letter “B” after the suffix number. Example: ­2B, -3B, -804B, etc.
General Purpose Types - DA, DS, DL, DR - These controls without a flange plate are mounted by means of a bracket supplied with the control. For panel mounted use the holes provided on the flanged case. See drawing 1000F on page 4.
Weather Resistant Types - DAW, DSW, DRW, DLW - For surface mount­ing only. Has flanged case with bottom connection. See drawing 1062 on page 4.
Explosion-Proof Types - DAE, DSE, DLE, DRE, DLH, DAH, DSH, DRH ­Secure with the mounting lugs provided on the housing. See drawings 98D and 1350 on page 4.
LOCATION OF REMOTE BULB To Insure Proper Control Operation:
1. The temperature bulb should be completely immersed in the medium being controlled.
2. BULB MUST BE CORRECTLY LOCATED AND PROPERLY INSTALLED so that the temperature changes at the bulb reflect actual temperature changes of the medium being controlled.
3. Be sure the bulb will not be affected by external temperatures.
4. Bulb may be installed vertically or horizontally. The following precautions should be taken: (a) Do not install bulb in dead end of pipe, tank, etc., where it would not be subject to free circulation of the medium being controlled. See illustration No.
5. (b) If bulb No. 2 is located in a pipe or duct with diameter larger than the bulb length, the bulb can be installed perpendicular to the pipe if protected from possible damage due to flow velocity. (c) If bulb No. 2 is to be inserted into a pipe with a diameter smaller than the bulb length (ex. a 2-7/8˝ long bulb in a 1˝ pipe) the bulb should be located lon­gitudinaly in the pipe so that the entire length is exposed to the flowing medi­um (ex. replace an elbow in the pipe with a tee and install bulb as shown in illustration No. 6 and 7. If pipe is 1˝ diameter or less, provide an enlarged sec­tion around the bulb so that it does not restrict flow. (d) When bulb No. 2 is to be inserted in a rapidly flowing stream of fluid in a pipe or duct, make sure that it is mechanicaly protected against the velocity in order to prevent the bulb from breaking off at the capillary.
5. Gas activated bulbs, unlike vapor pressure bulbs, do not have any eleva­tion effects. Therefore, no compensation is required.
WEATHER-RESISTANT
Prefixed by
DAW, DLW, DRW, DSW
EXPLOSION PROOF
Prefixed by
DAH, DLH, DRH, DSH
BULB PROTECTION
There are three ways to protect bulb No. 2:
1. Before tightening packing gland, pull bulb back into union as far as possi­ble (standard No. 2 bulb with 3/4˝ union only). The union is recessed to pro­vide some support.
2. Where insertion depth is greater than bulb length, use extension sleeve “B”. See illustration Nos. 8, 9, and 10.
3. Separable Wells (see drawing No. 10): wells slow down heat transfer of temperature changes to the bulb and consequently increase response time of control the union will slide back on capillary allowing complete immersion of bulb in any depth of well.
FOR DIMENSIONS OF BULBS, SEE CHART - PAGE 3
Caution: When installing bulbs with union connections, be careful not to twist the flexible tubing. Loosen packing nut or union so that the union can turn freely around tubing. After union is firmly secured to the pipe or tank, position bulb by sliding tubing through union and then tighten the packing gland nut.
CROSS AMBIENT TEMPERATURE EFFECTS
There are no cross ambient effects associated with these gas actuated units which are designed with a range number ending with “n”, i.e. -5N.
WHERE TURBULENT OR FAST FLOWING LIQUIDS PREVAIL
Bulb supports for bulb No. 2 are used where the bulb is mounted in turbulent or fast flowing liquids or where it is desired to insert the remote bulb at some distance within a vessel, pipe, or tank. See “B” in illustration Nos. 8, 9 and 10. The remote bulb should be positioned so that at least one inch of the bulb is within the extension sleeve “B” (dimension “B”) in order to insure firm support. No. 2 bulb union is threaded to receive extension sleeve “B”. Extension addi­tion “A” permits extending the mounting through insulation.
ILLUSTRATION NO. 5
INCORRECT
INSTALLATION
Note that a very small portion of the bulb is exposed to the direct path of medium being controlled. section containing bulb has no flow so its temper­ature is affected by radiation to or from the surrounding air.
ILLUSTRATION
These two illustrations indicate the bulb is completely exposed (in direct path) of medium being controlled.
ILLUSTRATION
NO. 8
EXPLOSION PROOF
Prefixed by
DAE, DLE, DRE, DSE
NO. 6
RECOMMENDED
INSTALLATION
ILLUSTRATION
NO. 7
ILLUSTRATION
NO. 9
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Wells (with dimensions “A” and “C” in illus-
WELLS
tration 10) are used to protect the remote bulb from physical damage or to permit removal of the bulb without draining the system. The use of a well will increase the time lag of the control since the temperature change of the controlled medium must be transmitted through the wall of the well and then the bulb. Thus when wells are used, it is important that the well dimen­sion “C” be greater than or equal to the bulb length “B” to insure that all of the temperature sensistive portion of the bulb is within the liquid area.
ILLUSTRATION
NO. 10
WIRING
Wire in accordance with local electrical codes or follow equipment manu­facturer’s recommendations. On general purpose controls, do not attach ridged conduit to case. use a short strip of BX to relieve conduit expansion and contraction strains. Where a control is connected directly into the load circuit, it must be con­nected into the hot side of line. Do not overload electrically - see nameplate attached to control for electri­cal rating.
ADJUSTMENTS
How to Set Operating Point of Control
DA –
Prefixed by DA, DAE, DAH, DAW – Provided with double adjustments. Adjust the upper pointer to set the “high” tem­perature point for switch operation. Adjust the lower pointer to set the “low” temper­ature operating point. The difference between the upper and lower pointers is the operating differential between “on-off” switch operation. Minimum differential for each range is shown on Page 3.
DS –
Prefixed by DS, DSE, DSH, DSW – Equipped with a single adjustment. The single pointer on the scale sets the tem­perature where switch operation occurs. Differential is fixed (not adjustable). For fixed differential of each respective range, see Page 3.
DR –
DR-7035-153U. A single adjustment sets the operating point for automatic opera­tion. A push button reset must be operat­ed manually to restore the circuit to the original position after automatic operation. Example – Type DR-7035-153L: circuit will open automatically on a temperature rise to the temperature indicated by the pointer on the scale – no matter how much the temperature drops, the circuit will not reclose until the reset button is operated. Suffix -L denotes control will operate automatically on an increase. Suffix -U denotes control will operate automatically on a decrease.
DOUBLE ADJUSTMENT TYPES – FULLY AUTOMATIC
SINGLE ADJUSTMENT TYPES – FULLY AUTOMATIC
SEMI-AUTOMATIC CONTROL WITH MANUAL RESET
TWO-STAGE TEMPERATURE CONTROL
SERIES D-7435
TYPES DA-7435, DAW-7438, DAH-7435, DAE-7435 – This series incor­porates two single pole, double throw snap switches, actuated by the same Bourdon Tube. The operating point of each switch is adjustable through an outside knob. The change in temperature which opens and closes each switch at its respective setting is the “fixed differential” (sensi­tivity) of the switch. The temperature represented by the difference between the two adjustment points is the temperature “spread” between operation of the two switches. Upper pointer indicates the operating point of the “high” temperature circuit. Lower pointer indicates the operating point of the “low” temperature circuit.
OPERATING RANGES/SERIES D-7435 With Snap-Action Contacts
Range
No.
1N 3N 4N 5N 7N 8N
9N 10N 11N
Scale Range
-60 to 30°F (-50 to 0°C) 0 to 100°F (-18 to 40°C)
50 to 150°F (10 to 65°C)
100 to 200°F (40 to 95°C)
140 to 300°F (60 to 150°C) 250 to 415°F (120 to 215°C) 350 to 550°F (175 to 290°C)
100 to 300°F (40 to 150°C)
100 to 500°F (40 to 260°C)
Max. Temperature
Not To Exceed
150°F (65°C) 240°F (115°C) 250°F (120°C) 300°F (150°C) 500°F (260°C) 550°F (290°C) 600°F (315°C) 500°F (260°C) 600°F (315°C)
Min. Spread
Between Switches
12°F (7°C) 13°F (8°C) 13°F (8°C)
12°F (7°C) 18°F (10°C) 18°F (10°C) 22°F (13°C) 22°F (13°C) 46°F (26°C)
ELECTRICAL RATING AC capacities: 5A @ 120 V, 5A @ 240 V. (Not available for 440 V). DC capacity: 5A, 30 V resistive.
Fixed Deadband
Each Switch
4°F (2°C) 4°F (2.5°C) 4°F (2.5°C) 4°F (2.5°C)
6.5°F (4°C)
7°F (4°C) 8°F (4.5°C) 8°F (4.5°C)
16°F (9°C)
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OPERATING RANGES/SERIES D-7000 With Snap-Action Contacts Types: DA-7035, DA-7235-153 & DA-7235-804
Adjustable
Operating
Range
-60 to 30°F (-50 to 0°C)
0 to 100°F (-18 to 40°C)
50 to 150°F (10 to 65°C)
100 to 200°F (40 to 95°C)
140 to 300°F (60 to 150°C) 250 to 415°F (120 to 215°C) 350 to 550°F (175 to 290°C)
100 to 300°F (40 to 150°C)
100 to 500°F (40 to 260°C)
ELECTRICAL RATINGS
(1) All bulbs, including those with a copper capillary, are made or Type 304 Stainless Steel (2) Insertion depth may be increased through use of bulb supports or wells.
Circuit
Suffix No.
-153
-804
GENERAL BULB INFORMATION
All bulbs are made of 304 stainless steel; capillary material is either copper or 316 stainless steel, as shown in the range table. The maximum pressure of bulbs with a process connection is 300 psi. Other bulbs are for non-pressurized (e.g., open tank) use only. Consult the factory for higher pressure applications.
RANGE TABLE – NO. 2 BULB Standard 11/16˝ Diameter Series D Bulb & 3/4˝ NPT Connection
RANGE TABLE – NO. 2 BULB Optional 1/2˝ & 3/8˝ Diameter Bulbs with 3/4˝ NPT Connection
Optional 1/2˝ Diameter Bulb
Optional 3/8˝ Diameter Bulb
RANGE TABLE – NO. 1 BULB 11/16˝ Diameter Series D Bulb for Open Tank Use
(1) All bulbs, including those with a copper capillary are made of Type 304 Stainless Steel
Switch Action
SPDT one circuit OPENS as other CLOSES Two SPDT operate simultaneously in one direction upon increase (or decrease when specified)
with 3/4˝ NPT
Process Connection
with 3/4˝ NPT
Process Connection
Range
No.
1N 3N 4N 5N 7N 8N
9N 10N 11N
Bulb (1)/ 6 ft. Cap.
Tubing
SS Bulb/
Copper
Capillary
SS Bulb/
SS Cap.
Bulb (1)/ 6 ft. Cap.
Tubing
SS Bulb/
Copper
SS Bulb/ SS Cap.
SS Bulb/
Copper
SS Bulb/ SS Cap.
Bulb (1)/ 6 ft. Cap.
Tubing
SS Bulb/
Copper
SS Bulb/
SS Cap.
Max. Process Temp. Not To
Exceed
150°F (65°C) 240°F (115°C) 250°F (120°C) 300°F (150°C) 500°F (260°C) 550°F (290°C) 600°F (315°C) 500°F (260°C) 600°F (315°C)
1N, 3N, 4N,
5N, 7N, 10N
B=2-7/8˝ Standard
B=2-7/8˝
1N, 3N, 4N,
5N, 7N, 10N
E=11-3/8˝ B=11-3/8˝
E=11-3/8˝ B=11-3/8˝
1N, 3N, 4N,
5N, 7N, 10N
B=2-7/8˝ Standard
B=2-7/8˝
Adjustable Deadband
Range Numbers
E=2-7/8˝
E=2-7/8˝
Option
Range Numbers
E=5-3/4˝
B=5-3/4˝
E=5-3/4˝
B=5-3/4˝
Range Numbers
Option
Minimum
Deadband
23°F (13°C) 25°F (14°C) 25°F (14°C) 25°F (14°C) 41°F (23°C) 42°F (23°C) 50°F (28°C) 50°F (28°C)
100°F (56°C)
See Code D
8N, 11N
N.A.
E=2-7/8˝ B=2-7/8˝ Standard
8N, 11N
N.A.
E=5-3/4˝ B=5-3/4˝
N.A.
E=11-3/8˝ B=11-3/8˝
8N, 11N
N.A.
B=2-7/8˝ Standard
Adjustable Deadband Fixed Deadband
DS-7235-804
20°F (12°C) See Code G
Circuit
-153
-153
-804
Optional
11/16˝ Bulb
with
1/2˝ NPT
Process
Conn.
Optional
1/2˝ Bulb
with
1/2˝ NPT
Optional
3/8˝ Bulb
with
1/2˝ NPT
9N
N.A.
E=4-7/8˝ B=4-7/8˝ Standard
9N
N.A.
E=10˝ B=10˝
N.A.
E=19-7/8˝ B=19-7/8˝
9N
N.A.
B=4-7/8˝ Standard
DS-7235-153DS-7035-153
Fixed
Deadband
5°F (3°C) 5°F (3°C) 5°F (3°C) 5°F (3°C)
8°F (4.5°C)
9°F (5°C) 10°F (6°C) 10°F (6°C)
20°F (12°C) See Code E
Code
Suffix No.
D
E
G
1/4 HP at 120V AC, 1/2 HP at 240V AC.DC rated controls (up to 10A), consult factory.5A, 30V DC resistive.
Optional 11/16˝ Bulb & 1/2˝ NPT Connection
Optional 1/2˝ Bulb & 3/8˝ Bulbs with 1/2˝ NPT Connection
NOTES:
Dim. “E” = MINIMUM INSERTION DEPTH Minimum clearance distance for bulb insertion: measured from the top outside surface of female NPT.
Dim. “B” = ACTIVE BULB LENGTH Length of bulb that responds to temperature change: measured from the free end. Process fluid must have good contact with the bulb over this length.
Bulb Furnished With 6˝
Capillary Unless
(2) SPDT
Fixed
Deadband
5°F (3°C) 5°F (3°C) 5°F (3°C) 5°F (3°C)
8°F (4.5°C)
9°F (5°C) 10°F (6°C) 10°F (6°C)
AC Capacity DC Resistive Horsepower
120V
15A
15A
5A
Otherwise Specified (1)
Bulb No./Cap. Mat’l.
No. 2 SS/Copper No. 2 SS/Copper No. 2 SS/Copper No. 2 SS/Copper No. 2 SS/Copper
No. 2 SS/Copper
240V
440V
15A
15@480V
15A
5A
1N, 3N, 4N,
5N, 7N, 10N
E=3-1/2˝ B=2-7/8˝
E=3-1/2˝ B=2-7/8˝
1N, 3N, 4N,
5N, 7N, 10N
E=6-3/8˝ B=5-3/4˝
E=6-3/8˝ B=5-3/4˝
E=11-3/8˝ B=11-3/8˝
E=11-3/8˝ B=11-3/8˝
NA NA
No. 2 SS/SS No. 2 SS/SS
No. 2 SS/SS
120V
1/2A
 
Range Numbers
8N, 11N
E=3-1/2˝ B=2-7/8˝
Range Numbers
E=11-3/8˝ B=11-3/8˝
2-7/8˝ (73 mm) 2-7/8˝ (73 mm) 2-7/8˝ (73 mm) 2-7/8˝ (73 mm) 2-7/8˝ (73 mm) 2-7/8˝ (73 mm)
4-7/8˝ (124 mm)
2-7/8˝ (73 mm) 2-7/8˝ (73 mm)
Repeatability: ±1% of full scale.
240V
1/4A
 
N.A.
8N, 11N
N.A.
E=6-3/8˝ B=5-3/4˝
N.A.
Bulb Min.
Insertion
Depth (2)
AC
1/8
NA
9N
N.A.
E=5-1/2˝ B=4-7/8˝
9N
N.A.
E=10-5/8˝
B=10˝
N.A.
E=19-7/8˝
B=19-7/8˝
DC
NA NA NA
Well Pressure Ratings
Temp.
Protective Well Assemblies For Series D. No. 2 Bulb, (Standard 11/16˝ Diameter)
Range
1N, 3N, 4N,
5N, 7N, 10N
8N, 11N
Bulb Ass’y Well Dim.
9N
E (Min.)
2-7/8˝ 73 mm 2-7/8˝ 73 mm 4-7/8˝
124 mm
C 3-1/4˝ 83 mm 3-1/4˝ 83 mm 5-1/4˝
134 mm
Well Ass’y #
Brass
49-543
N/A
N/A
S.S.
49-251SS-1
49-251SS-1
49-253SS-1
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(21°C)
200°F
(95°C)
300°F
(150°C)
400°F
(205°C)
550°F
(285°C)
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70°F
Brass
1000 psi
6890 kPa
900 psi
6200 kPa
500 psi
3440 kPa
160 psi
1100 kPa
Do Not
Use
SS
2400 psi
16500 kPa
2250 psi
15500 kPa
2150 psi
14800 kPa
-
-
2000 psi
13700 kPa
Control movement must not be oiled.
Do not overload – note electrical rating on nameplate and be sure total current passing through switch is within specified rating.
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. Do not tamper with switch wires. Position of these wires is essential to proper operation. Tampering with these wires will void warranty.
CAUTIONS
When the control has been adjusted to desired range, the locking bar may
LOCKING DEVICE
be inserted between the adjustment screws with slot passing over the pro­jecting lug. By placing a sealing wire between the locking bar and the hole in the lug protruding from adjustment assembly, adjustments cannot be tampered with. For DAH and DSH, sealing wire may pass through locking bar and hole in hub above adjusting knobs. DAW, DRW, DSW, adjusting knob cover may be sealed in place with seal­ing wire through cover bolt hole.
CONTROL DIMENSIONS
Note: Dimensional drawings shown are for general reference only. Comprehensive drawings are available from factory upon request.
General Purpose
Types DA, DS, DR, DL Drawing No. 1000B
Explosion-Proof
Types DAH, DRH, DSH, DLH Drawing No. 1350
Explosion-Proof
Types DAE, DRE, DSE, DLE Drawing No. 98D
Flange for Surface Mounting
Drawing No. 1000F
Weather-Proof
Types DAW, DSW, DRW, DLW Drawing No. 1062
©Copyright 1997 Dwyer Instruments, Inc.
MERCOID DIVISION
Printed in U.S.A. 2/97
Phone: 219/879-8000 www.dwyer-inst.com
FR# 92-442122-00
DWYER INSTRUMENTS, INC. Fax: 219/872-9057 e-mail: info@dwyer-inst.com P.O. BOX 258 • MICHIGAN CITY, INDIANA 46361, U.S.A.
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