IM360 Series-01
Type 360 Series
Models 360, 361, 362
Explosion-Proof
Pressure Switches
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
BEFORE INSTALLING, CHECK THE SENSOR MODEL SELECTED FOR
COMPATIBILITY TO THE PROCESS MEDIA IN CONTACT WITH THE SENSOR
AND WETTED PARTS.
MISUSE OF THIS PRODUCT MAY CAUSE EXPLOSION AND PERSONAL
INJURY. THESE INSTRUCTIONS MUST BE THOROUGHLY READ AND
UNDERSTOOD BEFORE UNIT IS INSTALLED.
THIS EQUIPMENT 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. ≤ 95 °C (203 °F), ENCLOSURE TYPE 4X.
THIS EQUIPMENT IS ATEX CERTIFIED FOR EQUIPMENT CATEGORY 2.
SUITABLE FOR APPROPRIATE USE IN GAS ZONE 1 AND DUST ZONE 21
APPLICATIONS.
0539 DEMKO 04 ATEX 0334782X
II 2 G EEx d IIC T6
II 2 D T+85 °C
-50 °C ≤ Tamb. ≤+80 ºC, IP66
The 360 Series pressure switch utilizes a diaphragm or piston sensor to detect a
pressure change. The response, at a predetermined set point actuates an SPDT
or DPDT snap-acting switch, converting a pressure signal into an electrical signal.
Set point may be adjusted by turning the adjustment mechanism according to
procedures outlined in Part II – Adjustments.
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 MAXIMUM PRESSURE IS
ACCEPTABLE (E.G., START-UP, TESTING). CONTINUOUS OPERATION SHOULD NOT
EXCEED THE DESIGNATED OVER RANGE PRESSURE.
*Proof Pressure
The maximum pressure to which a pressure sensor may be occasionally sub-
jected, which causes no permanent damage (e.g., start-up testing). The units
may require re-calibration.
THESE PRODUCTS DO NOT HAVE ANY FIELD REPLACEABLE PARTS. ANY
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I,
DIVISION 1.
THE EPOXY RESIN SHALL NOT BE SUBJECTED TO A TEMPERATURE
GREATER THAN 125°C.
Part I - Installation
Tools Needed
3/4 - 1" Open end adjustable wrench
MOUNTING
ALWAYS LOCATE UNITS WHERE SHOCK, VIBRATION AND AMBIENT
TEMPERATURE FLUCTUATIONS ARE MINIMAL. DO NOT MOUNT IN AMBIENT
TEMPERATURE AREAS EXCEEDING 203°F (IF UL/cUL APPROVAL IS
APPLICABLE) OR 180 °F (IF ATEX APPROVAL IS APPLICABLE). IF SEVERE PRESSURE
SURGES ARE EXPECTED, CONSIDER THE USE OF A PRESSURE SNUBBER.
MOUNT USING PRESSURE CONNECTION: ALWAYS USE A WRENCH ON
PRESSURE CONNECTION WRENCH FLAT. (SEE FIGURE 1).
UNIT MAY BE MOUNTED IN ANY POSITION. IF UNIT IS TO BE SET AFTER
MOUNTING, VERIFY THAT ADJUSTMENT OPENING IS ACCESSIBLE TO THE
OPERATOR.
1/2” NPT Male Electrical Connection
When panel mounting, mount through 7/8” clearance hole in panel. Hold in place with
serrated 1/2" conduit nut. Always support the unit by holding a wrench on the hex.
WIRING
DISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING UNIT. ELECTRICAL
RATINGS STATED IN LITERATURE AND ON NAMEPLATE MUST NOT BE
EXCEEDED. OVERLOAD ON A SWITCH CAN CAUSE FAILURE ON THE FIRST
CYCLE.
WIRE IN ACCORDANCE WITH LOCAL AND NATIONAL ELECTRICAL CODES.
BY THE INSTALLATION, THE WIRES SHALL BE PROTECTED AGAINST
MECHANICAL DAMAGE. E.G. BY USE OF A CONDUIT.
DIN CONNECTOR (OPTION M515) IS NOT APPROVED FOR CLASS I, DIV. 1
HAZARDOUS LOCATIONS/FLAMEPROOF ATMOSPHERES.
THE WIRING TO THE PRESSURE SWITCH MUST ONLY BE CONNECTED IN
THE SAFE AREA OR BY AN APPROVED TERMINAL BOX CERTIFIED TO
EN 50 018 OR EN 50 019 FOR HAZARDOUS LOCATIONS/FLAMEPROOF
ATMOSPHERES.
1/2" NPT Male conduit connection is provided on top of the unit with 72” of color
coded and marked 18 AWG lead wires. Unit is available with SPDT or DPDT output.
Terminals
SPDT
DPDT
SWT1
SWT2
Common
Brown
Brown
Yellow
Normally Closed Red
Red
Black
Normally Open Blue
Blue
Violet
Ground
Green
Green
DIN Connector with 4 Male Terminals (figure 3)
Wire in accordance with local and national electrical codes. Connector conforms to
DIN 43650. Use a mating DIN connector (female type). Coding:
Terminals
Terminal #1 Common
Terminal #2 Normally Closed
Terminal #3 Normally Open
Ground
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
