IMP12-14
www.ueonline.com
1
the ePoxy resIn shall not be subjected to a teMPerature
greater than 125°c.
thIs Product does not have any fIeld rePlaceable Parts. any
substItutIon of coMPonents wIll InvalIdate thIrd-Party Issued
aPProvals and certIfIcatIons, and May IMPaIr suItabIlIty for
class I, dIvIsIon 1 locatIon.
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 bulletin for product specifications. Product bulletin may be
found at www.ueonline.com.
date code format on nameplate is “yyww” for year and week.
Part I - Installation
Tools Needed
1-1/6" open end wrench
MouNTINg
always locate the Product where shock, vIbratIon and aMbIent teM-
Perature fluctuatIons are MInIMal. do not Mount In aMbIent teMPera-
ture areas exceedIng 176°f (80 °c).
If severe Pressure surges are exPected, consIder the use of a
Pressure snubber.
for Pressure Models, Mount usIng Pressure connectIon: always use a
wrench on Pressure connectIon wrench flat. (see fIgure 1)
12 Series
Explosion-Proof, Pressure,
Vacuum, and Differential
Pressure Switches
U N I T E D E L E C T R I C
C O N T R O L S
Installation and Maintenance
Instructions
IMP12-14
Please read all instructional literature carefully and thoroughly before starting. Refer to the final page for the listing of Recommended
Practices, Liabilities and Warranties.
gENERAL
MIsuse of thIs Product May cause exPlosIon and Personal Injury.
these InstructIons Must be thoroughly read and understood
before Product Is Installed.
thIs Product Is suItable for use In class I, dIvIsIons 1 & 2, grouPs
a, b, c and d; class II, dIvIsIons 1 & 2, grouPs e, f and g; class III; or
non-hazardous locatIons only. -
50 °C (-58 °F) ≤ Tamb. ≤ 80 °C (176
°f), enclosure tyPe 4x.
thIs Product Is atex and Iecex certIfIed for equIPMent category
2. suItable for aPProPrIate use In gas zone 1 and dust zone 21
aPPlIcatIons.
en 60079-0:2012, en 60079-
1:2007, en 60079-31:2009
Iec 60079-0:ed.6, Iec 60079-
1:ed.6, Iec 60079-31:ed.2
0539 deMko 08 atex 0717128x
II 2 g ex d IIc t6 gb
II 2 d ex tb IIIc t80°c db
IP66
-50°c < tamb. < +80°c
Iecex ul 14.0072x
ex d IIc t6 gb
ex tb IIIc t80°c db
IP66
-50°c < tamb. < +80°c
ue declarations and third-party issued agency certifications 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 May be requIred.
Proof Pressure* lIMIts stated wIthIn the lIterature and PrInted
onto the Product housIng Must never be exceeded, even by
surges In the systeM. occasIonal oPeratIon of the Product uP to
Proof Pressure Is accePtable (e.g., start-uP, testIng). contInuous
oPeratIon should not exceed the desIgnated over range Pressure**
or workIng Pressure range***.
*Proof Pressure - the maximum pressure to which a pressure sensor may be occasionally
subjected, which causes no permanent damage (e.g., start-up testing). the product may
require set-point adjustment after reaching proof pressure.
**over range Pressure - the pressure value to which a pressure sensor may be
continuously subjected without causing damage and while maintaining set point
repeatability.
***working Pressure range - the pressure range within which two opposing sensors can
be safely operated while maintaining set point repeatability.
DUAL SEAL
CERTIFIED
Do NoT TuRN
switch
housing
MouNT VIA
pressure
connection
Figure 1