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Clark Solutions
One Series, 2-Wire Electronic Pressure & Temperature Switches
E F.S. Ranges 5 to 4500 PSI, -50 to 450°F, 100% F.S. Deadband & Set Point Adjustment
(Page 4 of 6)
SPECIFICATIONS
Power input: 12-30 VDC or 90-130 VAC or VDC (derived from PLC/DCS discrete
input or through a suitable series load). Refer to Installation and
Maintenance Sheet IM2W for additional information
Accuracy: 0.5% of full range span, under nominal conditions
Repeatability: 0.1% of full range span
Ambient operating temperature range: -40 to 85°C; -20 to 70°C
(Full display visibility)
Temperature drift: 300 ppm/°C
Switch response time: Change-of-output response within 50 mS (for detection
of full step change and change of output state, delay feature off)
Display response time: 400 mS
Response time filtering (Delay): Software-configurable between 250 mS and 2
seconds in 2x increments
Diagnostics (IAW®): Open or shorted sensor; plugged port; power supply out
of range; over and under-range conditions; microprocessor faults/failure;
keypad short; switch fault
Output states: Field selectable for 2-state or 3-state operation.
For 3-state operation: Output will remain in closed state during normal
(inside threshold) operation; change to open state to indicate a
fault/failure; and change between closed and open (pulse) state on a
25 mS or 100 mS cycle (user defined) during at and outside threshold
conditions
For 2-state operation: Output will remain in one state (open or close) during
normal (inside threshold) operation; change to the opposite state for
at and outside threshold conditions. Unit must be configured as
normally closed (Open rise or Open fall) in order to achieve fail-safe
condition so that a diagnostic or other failure will produce an open
output state.
Control modes: Field configurable for change of state above or below set point
value. Software configurable for automatic or manual reset
Switch output: SPST solid state device, to interface with 12-30 VDC or 90-130
VAC input from PLC, DCS or relay. May be wired for either sourcing or
sinking operation
Electrical characteristics: Model 2W2D- Switch open:12-30 VDC @750 µA
maximum; Switch closed: 4.7VDC @40mA, maximum.
Model 2W3A- Switch open: 90-130 VAC or VDC @ 1mA maximum, switch closed:
13 VAC or VDC @ 100 mA, maximum
Enclosure: Designed to meet NEMA 4X/IP66, epoxy-coated aluminum
Faceplate: UV-resistant Lexan® (polycarbonate) with 2-button membrane
switch and overlay
Wiring terminations: Terminal block with 3 screw connections (2 for switch
output and one to ground chassis). Accepts 14-22 AWG wire.
Conduit: 1/2 NPT (female)
Display: Local 4 digit x 0.5 LCD
I Am Working (IAW®) status arrows
Process Variable
Units of measure
Switch status
Latch status
Set point value
Deadband value
Min/Max values
Fault codes
Set point & deadband: User-configured, 100% adjustable over entire sensor
range
Pressure sensor: 316 stainless steel, welded diaphragm, 1/2 NPT (female)
connection, micro-machined piezoresistive silicon element
Media temperature: -40 to 257°F (-40 to 125°C) Pressure Sensors
Temperature sensors: 304 stainless steel, 100 ohm 4-wire RTD, 0.25 OD epoxy
filled sheath (Local and Remote models), powder packed sheath (High-
temperature models)
Media range: -50 to 1000°F (-45 to 538°C) Temperature Sensors
EMI/RFI: Compliance to CE EMC requirements EN5011:1998:A1,
EN61000-6-2:1999
Emission: EN55011 class A; Radiated emissions
Immunity: EN61000-4-2 Immunity to Electrostatic Discharge
EN61000-4-3 Immunity to Continuous Radiated Disturbances
EN61000-4-4 Immunity to Electrical Fast Transients
EN61000-4-5 Immunity to Surges
EN61000-4-6 Immunity to Continuous Conducted Disturbances
EN61000-4-8 Immunity to Power Frequency Magnetic Field
Memory: Programming and data protected by Non-Volatile EEPROM
Effective transmission distance: 2,000 feet at rated voltage
Lexan® is a registered trademark of General Electric Co.
IAW® is a registered trademark of United Electric Controls Co.
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