United Electric Controls 12 Series Owner's manual

IMP12 181
12 Series
Explosion-Proof, Pressure, Vacuum, and
Differential Pressure Switches
DUAL SEAL
CERTIFIED
Installation and Operation Instructions
Please read all instructional literature carefully and thoroughly before starting.
Refer to the final page for the Warranty.
GENERAL
MISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION AND
PERSONAL INJURY. THESE INSTRUCTIONS MUST BE THOROUGHLY
READ AND UNDERSTOOD BEFORE UNIT IS INSTALLED.
Cert number E40857-19971015
Applicable Area North America
Markings Class I, Groups A, B, C and D; Class II, Groups
E, F and G; Class III
Applicable Standards
UL 1203, UL 508; CAN/CSA C22.2 No. 14,
CAN/CSA C22.2 No. 25
CAN/CSA C22.2 No. 30
Cert number DEMKO C8 ATEX 0717128X
Applicable Area Europe (EU)
Markings II 2 G Ex db IIC T6 Gb; II 2 D Ex tb IIIC T85 °C Db
Applicable Standards EN IEC 60079-0; EN 60079-1; EN 60079-31
Cert number IECEx UL 14.0072X
Applicable Area International
Markings
Ex db IIC T6 Gb
Ex tb IIIC T85 °C Db IP66
-50 °C to +80 °C
Applicable Standards IEC 60079-0; IEC 60079-1; IEC 60079-31
Cert number DEMKO 11 ATEX 1105261X
Applicable Area Europe (EU)
Markings II 1 G Ex ia IIC T6 Ga; -50 °C to +60 °C
Applicable Standards EN IEC 60079-0; EN 60079-11
Cert number IECEx UL 14.0075X
Applicable Area International
Markings Ex ia IIC T6 Ga
-50 °C ≤ Tamb ≤ +60 °C
Applicable Standards IEC 60079-0; IEC 60079-11
12 SERIES FOR USE IN CLASS I, DIV. 1, GROUPS A, B, C & D;
CLASS II, DIV. 1, GROUPS E, F & G; CLASS III HAZARDOUS
LOCATIONS. ENCLOSURE TYPE 4X, IP66. AMBIENT
TEMPERATURE RANGE -50°C (-58°F) TO 95°C (203°F).
ATEX AND IEC SPECIFIC CONDITIONS OF USE: THE WIRING
TO THE PRESSURE SWITCH MUST ONLY BE CONNECTED IN A
SAFE AREA OR BY AN APPROVED TERMINAL BOX CERTIFIED
TO EN 60079-0/IEC 60079-0, EN 60079-1/IEC 60079-1, AND EN
60079-31/IEC 60079-31 FOR HAZARDOUS LOCATIONS. THE
EPOXY RESIN SHALL NOT BE SUBJECTED TO A TEMPERATURE
GREATER THAN 125°C (257°F). THE WIRES SHALL BE PROTECTED
AGAINST MECHANICAL DAMAGE, E.G., BY USE OF CONDUIT.
OPTION M515 WITH DIN CONNECTOR IS NOT COVERED BY
THIS CERTIFICATE. OPTION M460, EXTERNAL EARTH GROUND
SCREW, IS TO BE USED IF METAL CONDUIT IS NOT USED.
ELECTRICAL CONDUIT FITTING THREADED CONNECTION SHALL
BE M20 X 1.5 WITH 7 THREADS MINIMUM ENGAGEMENT.
UE declarations and third-party issued Agency certi cations
are available for download at www.ueonline.com.
PRIOR TO INSTALLATION, CHECK THE WETTED PARTS
MATERIAL FOR COMPATIBILITY TO THE PROCESS MEDIA.
THE DUAL SEAL DEVICE METHOD OF PRIMARY SEAL
FAILURE ANNUNCIATION IS VISIBLE LEAKAGE FROM
THE ENCLOSURE. DEPENDING UPON MEDIA SENSED,
ADDITIONAL METHODS OF LEAK DETECTION SHALL BE
REQUIRED.
THIS PRODUCT DOES NOT HAVE ANY FIELD REPLACEABLE
PARTS. ANY SUBSTITUTION OF COMPONENTS SHALL
INVALIDATE AGENCY CERTIFICATION(S), AND IMPAIR
SUITABILITY FOR CLASS I, DIV. 1 LOCATION.
PROOF PRESSURE * LIMITS STATED IN THE LITERATURE
AND ON NAMEPLATES MUST NEVER BE EXCEEDED, EVEN
BY SURGES IN THE SYSTEM. OCCASIONAL OPERATION OF
UNIT UP TO PROOF PRESSURE IS ACCEPTABLE (E.G., START-
UP, TESTING). CONTINUOUS OPERATION SHOULD NOT
EXCEED THE DESIGNATED OVER RANGE ** OR WORKING
PRESSURE RANGE***.
* Proof Pressure - the maximum pressure to which a pressure sen-
sor maybe occasionally subjected, which causes no permanent dam-
age (e.g., start-up, testing). The unit may require re-gapping.
** Over Range Pressure - the maximum pressure to which a pres-
sure sensor may be continuously subjected without causing damage
and maintaining set point repeatability.
*** Working Pressure Range - the pressure range in which two op-
posing sensors can be safely operated and still maintain set point
provided the diff erence in pressure between the low and high sides
does not exceed the designated adjustable range.
DUAL SEAL
CERTIFIED

IMP12 182
The 12 Series switch utilizes a diaphragm or a piston
sensor to detect a pressure change. The response, at
a predetermined set point, actuates a SPDT or DPDT
snap-acting switch, converting a pressure signal into
an electrical signal. Control set point may be varied by
turning the internal slotted adjustment screw according
to procedures outlined in Part II-Adjustments. Please
refer to product datasheet at www.ueonline.com for
product specications. Date code format on nameplate
is “YYWW” for year and week.
DEVICE MUST NOT BE ALTERED OR MODIFIED AFTER
SHIPMENT. CONSULT UE IF MODIFICATION IS NECESSARY.
Part I - Installation
Mounting
• 1 1/16” Open end wrench
INSTALL DEVICE WHERE SHOCK, VIBRATION AND
TEMPERATURE FLUCTUATIONS ARE MINIMAL. DO NOT
INSTALL DEVICE IN AMBIENT TEMPERATURES THAT EXCEED
PUBLISHED LIMITS ON THE NAMEPLATE.
DEVICE SHOULD BE MOUNTED TO PREVENT MOISTURE
FROM ENTERING THE ENCLOSURE. VERTICAL MOUNTING IS
RECOMMENDED.
NOTE: Due to product sensitivity on sensor Type W, it is
recommended that these models be mounted vertically
with pressure connection facing down. Other types of
mounting may cause slight set-point shifts, which may
require readjustment.
CONSIDER THE USE OF A PRESSURE SNUBBER IF SEVERE
PRESSURE SURGES ARE EXPECTED.
FOR PRESSURE MODELS, MOUNT VIA PRESSURE
CONNECTION. ALWAYS USE A WRENCH ON PRESSURE
CONNECTION HEX (SEE FIGURE 1). DO NOT TIGHTEN BY
TURNING THE ENCLOSURE AS THIS WILL DAMAGE THE
SENSOR AND WEAKEN WELDED JOINTS.
FOR DIFFERENTIAL PRESSURE MODELS, MOUNT USING
THE ATTACHED MOUNTING BRACKET AGAINST A RIGID
SUPPORT, AND THEN CONNECT LOW AND HIGH PRESSURE
PORTS.
IF USING WITH A JUNCTION BOX, IT IS RECOMMENDED
THAT THE PRODUCT BE MOUNTED VERTICALLY WITH THE
PRESSURE CONNECTION FACING DOWN.
If product is to be set after mounting, verify that
adjustment opening is accessible, “Front” marking on
nameplate facing operator.
Panel Mounting via 1/2” NPTM or M20 Electrical
Connection
When panel mounting, mount through 7/8” clearance
hole in panel. Use 1/2” or M20 conduit nut to secure in
place. Always support the product by holding a wrench
on the hex.
Surface Mounting Bracket Kit (P/N 62169-13) (see Fig. 6)
❶ Open the adjustment cover and orient the unit so that
adjustment opening will be accessible when the switch is mounted.
❷ Close the adjustment cover ensuring that the bracket does
not interfere with the cover as this serves as the Dual Seal device
method of primary seal failure annunciation and venting.
Failure to install the unit correctly with the mounting bracket
may result in improper venting of the adjustment cover.
Wiring
DISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING
UNIT. WIRE UNITS ACCORDING TO NATIONAL AND LOCAL
ELECTRICAL CODES. THE WIRES SHOULD BE PROTECTED
AGAINST MECHANICAL DAMAGE BY USE OF A CONDUIT OR
OTHER SUITABLE MEANS.
DO NOT EXCEED ELECTRICAL RATINGS LISTED ON
NAMEPLATE. OVERLOAD ON A SWITCH CAN CAUSE
FAILURE, EVEN ON THE FIRST CYCLE.
DIN CONNECTOR (OPTION M515, FIGURE 4) IS NOT
APPROVED FOR CLASS I, DIV. 1 HAZARDOUS LOCATIONS/
FLAMEPROOF ATMOSPHERES.
1/2” NPT (male) or M20 (male) conduit connection is
provided on top of the product with 72” long, 18 AWG
leadwires. The product is available with SPDT or DPDT
operation. External grounding screw and clamp is
provided with option M460 for ATEX installation with
non-metallic conduit systems (See Figure 2). To attach
conduit connection hold electrical connection steady
with wrench on hex, then thread on conduit.
Factory Sealed Leadwires are color coded:
TERMINALS SPDT DPDT
Circuit 1 Circuit 2
Common Brown Brown Yellow
Normally Closed Red Red Black
Normally Open Blue Blue Violet
Ground Green Green
a
MOUNT VIA
pressure
connection
rr
DO NOT TURN
switch housing
Figure 1

IMP12 183
DIN Connector with 4 Male Terminals (see Figure 4)
Connector conforms to DIN 43650. Use a female mating
DIN connector (not UE supplied).
Coding: TERMINALS SPDT
Terminal #1 Common
Terminal #2 Normally Closed
Terminal #3 Normally Open
Ground
Part II - Adjustments
• Flathead screwdriver with 3/16” or 1/4” wide blade
❶ Connect control to pressure source.
❷ With power disconnected, slide cover toward electrical
terminations while twisting it to overcome friction.
❸ Connect power to terminals or leads.
❹ Insert screwdriver into adjustment slot and turn clockwise to
increase setting or counter clockwise to decrease setting (See Figure 3).
For setting on rise, apply desired pressure and turn
adjustment clockwise until switch actuates (circuit across
N.O. and COM terminals closes).
For setting on fall, apply pressure equal to normal system
operating pressure. Reduce source pressure to setpoint
value. Turn adjustment counter clockwise until switch
actuates (circuit across N.C. and COM terminals closes.
AFTER COMPLETING SETTING ADJUSTMENT, BE SURE TO
SLIDE ADJUSTMENT COVER BACK INTO PLACE.
Recommended Practices
• A redundant device is necessary for applications
where damage to the primary device could endan-
ger life, limb or property. A high or low limit switch
is necessary for applications where a dangerous
runaway condition could result.
• Monitor operation to observe warning signs of pos-
sible damage to device, such as drift in set point.
Check device immediately.
• Preventative maintenance and periodic testing is
necessary for critical applications where damage could
endanger property or personnel.
Part III - Dimensions
Dimensional drawings for all models may be found at: www.ueonline.com
Standard Conguration
PRESSURE SWITCH / CONNECTION CHART
Type Description Dimension A Dimension B Dimension C
In mm In mm In mm
21/2” NPT (female) 4.4 111.1 0.7 16.5 1 1/16 27.0
3, 5 1/2” NPT (female) 4.4 111.1 0.6 15.2 1 1/16 27.0
4, 6, 8 1/4” NPT (female) 4.4 111.1 0.6 15.2 1 1/16 27.0
7, 9 1/2” NPT (female) 4.0 100.3 1.6 40.6 1 1/8 28.6
P0-P9 1/4” NPT (female) 4.4 111.1 1.0 25.4 1 1/16 27.0
W1-W2 1/2” NPT (female) 4.0 100.3 2.2 55.9 1 1/16 27.0
W3-W4 1/2” NPT (female) 4.0 100.3 1.7 42.9 1 1/16 27.0
K1-K3 1/8” NPT (female) 4.4 111.1 1.7 42.9 N/A N/A
K4-K6 1/8” NPT (female) 4.4 111.1 1.8 44.5 N/A N/A
Option Description Dimension “A” Dimension
“B” Dimension “C”
M511 1/4” NPT (male) 1.1 27.9 1 1/16 27.0
XP112 1/2” NPT (female) 0.6 15.2 1 1/16 27.0
XP113 1/2” NPT (female) 0.6 15.2 1 1/16 27.0 Figure 3
FACTORY SEALED
LEADWIRES 72” LG.
E/C: ST/ST
1/2” NPT OR M20 (METRIC)
ADJUSTMENT
ACCESS COVER
SLOTTED ADJUSTMENT
SCREW (TURN SCREW
CLOCKWISE TO INCREASE
SET POINT)
1 1/4” (31.7mm) DIA.
WRENCH DIMENSION C
1 1/4”
(31.7mm) DIA.
A
B
Figure 2
Option M460 External
Grounding Screw

IMP12 184
Pressure Connections
1/2” NPT 1/2” NPT 1/4” NPT 1/2” NPT
Type W Type 2, 3, 5 Type 4, 6, 8, P0-P9 Type 7,9
Option M511 Options XP112, XP113
Dierential Pressure Connections
Type K1-K3 Type K4-K6
Types K1-K3 and K4-K6 shown with mounting bracket attached
Option M515 DIN Connection
Terminal #1 Common
Terminal #2 Normally Closed
Terminal #3 Normally Open
Ground
NOTE: Does not meet Div. 1 or 2, or ATEX requirements.
1 1/8”
(28.6 mm)
2 7/8”
(73.0 mm)
6”
(152.4 mm)
1 11/16”
(42.9 mm)
0.28” (7.1 mm) DIA.
x 0.41” (10.4 mm)
SLOT 2 PL
LOW
HIGH
1/8” NPT (FEMALE)
(LOW & HIGH)
2 7/8”
(73.0 mm)
0.28” (7.1 mm) DIA.
x 0.41” (10.4 mm)
SLOT 2 PL
1 1/8”
(28.6 mm)
1 3/4”
(44.5 mm)
3 11/16”
(93.7 mm)
LOW
HIGH
1/8” NPT (FEMALE)
(LOW & HIGH)
1 1/2”
(38.1 mm) DIA.
Figure 4
FOUR TERMINAL DIN
CONNECTOR
(CONFORMS TO DIN
43650, FORM A)
2 3/4”
(69.7mm)
ADJUSTMENT
ACCESS COVER
SLOTTED
ADJUSTMENT SCREW
(TURN SCREW
CLOCKWISE TO
INCREASE SET POINT)

IMP12 185
Option M421, M423 & M513 Junction Boxes
Option M430 Adjustment Cover Lock
M421 - EAC only; M423 - ATEX or IEC
Not cULus approved. Cover not shown.
4”
(102 mm)
NO ACCESS
SEALED PORT
ADJUSTMENT COVER
1/2” NPT (MALE)
CONDUIT PLUG
10mm HEX DRIVE
4”
(102 mm)
EXTERNAL
GROUND SCREW
INTERNAL
GROUND
SCREW
1/2” NPT (FEMALE)
PORTS, 2 PLCS
5 3/4”
(146 mm)
3.13”
(79 mm)
M513
cULus only. Does not meet Enclosure Type 4X. Cover
not shown.
4 3/4”
(121 mm)
3.13”
(79 mm)
1/32” MIN. SPACE
OPTION M430: COVER LOCK
Figure 5
NOTE: A 1/32” min. space must be maintained
between the bottom of the cover lock and the top
of the adjustment cover to ensure proper dual seal
annunciation and venting .
ADJUSTMENT COVER
SHOWN WITH OPTIONAL
COVER LOCK M430
MOUNTING BRACKET
Figure 6
2 5/8”
(66.7 mm)
11/16”
(17.5 mm)
1 9/16”
(39.7 mm)
1 1/8”
(28.6 mm)
2 1/4”
(57.1 mm)
1 3/4”
(44.4 mm)
3/4”
(19 mm)
1/2”
(12.7 mm)
1 1/2”
(38.1 mm)

IMP12 186
180 Dexter Avenue
Watertown, MA 02472 - USA
Telephone: [phone] - Fax: [phone]
www.ueonline.com
FOR A LIST OF OUR INTERNATIONAL AND
DOMESTIC REGIONAL SALES OFFICES
PLEASE VISIT OUR WEBPAGE
WWW.UEONLINE.COM
LIMITED WARRANTY
Seller warrants that the device hereby purchased is, upon delivery,
free from defects in material and workmanship and that any such
device which is found to be defective in such workmanship or
material will be repaired or replaced by Seller (Ex-works, Factory,
Watertown, Massachusetts. INCOTERMS); provided, however,
that this warranty applies only to device found to be so defective
within a period of 24 months from the date of manufacture
by the Seller. Seller shall not be obligated under this warranty
for alleged defects which examination discloses are due to
tampering, misuse, neglect, improper storage, and in any case
where devices are disassembled by anyone other than authorized
Seller’s representatives. EXCEPT FOR THE LIMITED WARRANTY OF
REPAIR AND REPLACEMENT STATED ABOVE, SELLER DISCLAIMS
ALL WARRANTIES WHATSOEVER WITH RESPECT TO THE DEVICE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR ANY PARTICULAR PURPOSE.
LIMITATION OF SELLER’S LIABILITY
Seller’s liability to Buyer for any loss or claim, including liability
incurred in connection with (i) breach of any warranty
whatsoever, expressed or implied, (ii) a breach of contract, (iii)
a negligent act or acts (or negligent failure to act) committed
by Seller, or (iv) an act for which strict liability will be inputted
to seller, is limited to the “limited warranty” of repair and/
or replacement as so stated in our warranty of device. In
no event shall the Seller be liable for any special, indirect,
consequential or other damages of a like general nature,
including, without limitation, loss of prots or production, or
loss or expenses of any nature incurred by the buyer or any
third party.
UE specications subject to change without notice.
FRENCH WARNING TRANSLATIONS
Pg Warning Text Texte d’Avertissement
1
MISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION AND
PERSONAL INJURY. THESE INSTRUCTIONS MUST BE THOROUGHLY
READ AND UNDERSTOOD BEFORE UNIT IS INSTALLED.
Une mauvaise utilisation de cet appareil peut provoquer une
explosion et/ou des blessures. Ces consignes doivent être lues
attentivement et bien comprises avant l’installation de l’appareil.
1
12 SERIES PRESSURE-OPERATED SWITCH FOR USE IN CLASS I,
GROUPS A, B, C AND D; CLASS II, GROUPS E, F AND G; CLASS III
HAZARDOUS LOCATIONS. ENCLOSURE TYPE 4X, IP66. AMBIENT
TEMPERATURE RANGE: -50°C (-58°F) TO 71°C (160°F).
Le pressostat 12 Series est adapté à une utilisation dans les lieux
de Classe I, Division 1, de Groupes A, B, C et D ; Classe II, Division 1,
Groupes E, F et G ; Classe III; ou non-dangereux. Boîtier de type 4X,
IP66. Plage de température ambiante -50°C (-58°F) à 95°C (203°F).
1
ATEX AND IEC SPECIFIC CONDITIONS OF USE: THE WIRING
TO THE PRESSURE SWITCH MUST ONLY BE CONNECTED IN A
SAFE AREA OR BY AN APPROVED TERMINAL BOX CERTIFIED
TO EN 60079-0/IEC 60079-0, EN 60079-1/IEC 60079-1, AND EN
60079-31/IEC 60079-31 FOR HAZARDOUS LOCATIONS. THE
EPOXY RESIN SHALL NOT BE SUBJECTED TO A TEMPERATURE
GREATER THAN 125°C (257°F). THE WIRES SHALL BE PROTECTED
AGAINST MECHANICAL DAMAGE, E.G. BY USE OF CONDUIT.
OPTION M515 WITH DIN CONNECTOR IS NOT COVERED BY
THIS CERTIFICATE. OPTION M460, EXTERNAL EARTH GROUND
SCREW, IS TO BE USED IF METAL CONDUIT IS NOT USED.
ELECTRICAL CONDUIT FITTING THREADED CONNECTION SHALL
BE M20 X 1.5 WITH 7 THREADS MINIMUM ENGAGEMENT.
Conditions spéciques d’utilisation ATEX et IEC: le câblage
de l’appareil ne doit être connecté que dans une zone non
dangereuse ou à une boîte de jonction et d’entrées de câble
certiées EN 60079-0/IEC 60079-0, EN 60079-1/IEC 60079-1, et
EN 60079-31/IEC 60079-31 pour zone dangereuse. La résine
Epoxy ne doit pas être soumise à une température supérieure
a 125°C (257°F). Les ls doivent etre protegés contre les
dommages mécaniques par un conduit. L’option M515 avec
un connecteur DIN n’est pas couverte par ce certicat. L’option
M460, vis de mise à terre externe, doit être utilisée si on
n’utilise pas de conduit métallique. Le raccord lete du conduit
electrique doit etre de type M20 X 1,5 avec un engagement
minimum de 7 lets.
1
THE DUAL SEAL DEVICE METHOD OF PRIMARY SEAL FAILURE
ANNUNCIATION IS VISIBLE LEAKAGE FROM THE ENCLOSURE.
DEPENDING UPON MEDIA SENSED, ADDITIONAL METHODS OF
LEAK DETECTION MAY BE REQUIRED (PRESSURE MODELS ONLY)
La défaillance du join primaire du dispositif à double étanchéité
est indiquée par une fuite visible. En fonction du type de
médium mesuré, d’autres méthodes de détection des fuites
peuvent être nécessaires (pressostats seulement).
1
THIS PRODUCT DOES NOT HAVE ANY FIELD REPLACEABLE
PARTS. ANY SUBSTITUTION OF COMPONENTS SHALL
INVALIDATE AGENCY CERTIFICATION(S), AND IMPAIR
SUITABILITY FOR CLASS I, DIV. 1 LOCATION.
Aucun composant de cet appareil ne peut être remplacé
sur le terrain. Toute substitution de composant invalidera
les approbations et certications données par un tiers et
compromettra l’utilisation dans un lieu de Classe I, Division 1.
2
INSTALL DEVICE WHERE SHOCK, VIBRATION AND
TEMPERATURE FLUCTUATIONS ARE MINIMAL. DO NOT
INSTALL DEVICE IN AMBIENT TEMPERATURES THAT
EXCEED PUBLISHED LIMITS ON THE NAMEPLATE.
Installer l’appareil dans un endroit où les chocs, les vibrations
et les variations de température sont minimes. Ne pas installer
l’appareil dans un lieu où les températures ambiantes dépassent
les limites indiquées sur la plaque signalétique de l’appareil.
2
DISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING
DEVICE. WIRE DEVICE IN ACCORDANCE WITH LOCAL
AND NATIONAL ELECTRICAL CODES. WIRES SHOULD BE
PROTECTED AGAINST MECHANICAL DAMAGE BY USE OF A
CONDUIT OR OTHER SUITABLE MEANS.
Avant le branchement de l’appareil, déconnecter l’installation
sur laquelle l’appareil doit être monté. Réaliser le branchement
électrique selon les codes électriques nationaux et locaux. Les
ls doivent être protegés contre les dommages mécaniques par
un conduit ou moyen approprié.
2
DO NOT EXCEED ELECTRICAL RATINGS LISTED ON
NAMEPLATE. OVERLOAD ON A SWITCH CAN CAUSE
FAILURE, EVEN ON THE FIRST CYCLE.
Les seuils électriques indiqués sur la plaque signalétique ne
doivent jamais etre dépassés. La surtension peut causer une
panne de l’appareil dès les premier cycle.
2DIN CONNECTOR (OPTION M515) IS NOT APPROVED FOR CLASS
I, DIV. 1 HAZARDOUS LOCATION/FLAMEPROOF ATMOSPHERE.
Le connecteur DIN (Option M515) n/est pas apprové pour la
classe I, DIV. 1 zone dangereuse/ atmosphère inammable.