• Adjustable Set Point Range:
    • Increasing: 2 to 75 psid, 13.7 to 517.1 kPa, 0.138 to 5.2 bar
    • Decreasing: 0.5 to 69 psid, 3.4 to 475.7 kPa, 0.035 to 4.78 bar
  • Deadband: Approximately 1.5 to 6 psi, 10.3 to 41.3 kPa, 0.103 to 0.414 bar
  • System Pressure (Maximum): 750 psig, 5171 kPa, 52 bar
  • Proof Pressure:
    • Both Ports: 1000 psig, 6894.75 kPa, 69 bar
    • High: 1000 psig, 6894.75 kPa, 69 bar
    • Low: 500 psig, 3447.37 kPa, 34.5 bar
  • Wetted Materials:
    • Pressure Port: 1/2" FNPT 300 Stainless Steel Welded Capsule
    • Diaphragm: 300 Stainless Steel Welded Capsule
    • O-Ring (Low Pressure Side): Viton
  • Relay: SPDT or DPDT
  • UL, CSA
    • Explosion Proof - Class 1, Div/Zone 1, Groups A, B, C and D
  • CRN, CE Mark, Dual Seal
The above description encapsulates the entire product series. Specifications for individual configurations may vary depending on the selection chosen.
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646DCE1-7076
646DCE1-7076
$645.19 $569.00 11% off While Supplies Last
  • Base Model

    646DCE1
  • Process Connection

    1/2" Female NPT - Welded Capsule - 300 Stainless Steel
  • O-Ring

    Viton
  • Output

    SPDT
  • Electrical Contacts

    Silver
  • Electrical - Free Leads

    18" (45 cm) Teflon Free Leads for Low Temperatures
  • Agency Approvals

    UL, CSA, CE, Dual Seal

Selected Configuration

Model #:

646DCE1-7076

Price:
$569.00 USD
Availability:
In Stock (2 left)
Min. Qty:
5 Items

Configuration

reset configuration

Agency Approvals

Available agency approvals listed below, ATEX is a non standard option.
  • ATEX
  • CE
  • CRN - Alberta
  • CRN - British Columbia
  • CRN - Manitoba
  • CRN - N.W. Territories
  • CRN - Saskatchewan
  • CSA
  • cUL
  • Dual Seal
  • EMC Directive
  • LVD
  • PED
  • RoHS
  • RTN
  • UL

NACE & NIST

  • NACE MR0175:2003

Set Point - Increasing

Set Point Ranges below describe the adjustable increasing range of the entire series, for specific ranges by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure

psi
Proof (Test)
Pressure

psi
Adjustable
Set Point Range
Deadband
Approximate
psi
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure

psi
Decreasing
Pressure

psi
Model
646DCE*
Wetted
Parts
    High Low
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCE1 Stainless
Steel
Viton
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCEM1
750 1000 1000 500 9 - 75 4 - 69 6 DCE2
  
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
kPa
Proof (Test)
Pressure
 
kPa
Adjustable
Set Point Range
Deadband
Approximate
kPa
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
kPa
Decreasing
Pressure

kPa
Model
646DCE*
 
Wetted
Parts
    High Low
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCE1 Stainless
Steel
Viton
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCEM1
5171 6895 6895 3447 62 - 517.1 27.5 - 475.7 41.3 DCE2
  
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
bar
Proof (Test)
Pressure
 
bar
Adjustable
Set Point Range
Deadband
Approximate
bar
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
bar
Decreasing
Pressure

bar
Model
646DCE*
Wetted
Parts
    High Low
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCE1 Stainless
Steel
Viton
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCEM1
52 69 69 34.5 0.62 - 5.2 0.21 - 4.78 0.414 DCE2
  
  • bar: 0.138 to 5.2
  • kPa: 13.8 to 124.1
  • psid: 2 to 75

Set Point - Decreasing

Set Point Ranges below describe the adjustable decreasing range of the entire series, for specific ranges by model click a desired unit of measurement below. 
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure

psi
Proof (Test)
Pressure

psi
Adjustable
Set Point Range
Deadband
Approximate
psi
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure

psi
Decreasing
Pressure

psi
Model
646DCE*
Wetted
Parts
    High Low
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCE1 Stainless
Steel
Viton
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCEM1
750 1000 1000 500 9 - 75 4 - 69 6 DCE2
  
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
kPa
Proof (Test)
Pressure
 
kPa
Adjustable
Set Point Range
Deadband
Approximate
kPa
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
kPa
Decreasing
Pressure

kPa
Model
646DCE*
 
Wetted
Parts
    High Low
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCE1 Stainless
Steel
Viton
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCEM1
5171 6895 6895 3447 62 - 517.1 27.5 - 475.7 41.3 DCE2
  
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
bar
Proof (Test)
Pressure
 
bar
Adjustable
Set Point Range
Deadband
Approximate
bar
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
bar
Decreasing
Pressure

bar
Model
646DCE*
Wetted
Parts
    High Low
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCE1 Stainless
Steel
Viton
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCEM1
52 69 69 34.5 0.62 - 5.2 0.21 - 4.78 0.414 DCE2
  
  • bar: 0.035 to 4.78
  • kPa: 3.5 to 475.7
  • psid: 0.5 to 69

Adjustment Type

  • Field Adjustable

System Pressure

System Pressure below describes the range of the entire series, for specific values by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure

psi
Proof (Test)
Pressure

psi
Adjustable
Set Point Range
Deadband
Approximate
psi
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure

psi
Decreasing
Pressure

psi
Model
646DCE*
Wetted
Parts
    High Low
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCE1 Stainless
Steel
Viton
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCEM1
750 1000 1000 500 9 - 75 4 - 69 6 DCE2
  
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
kPa
Proof (Test)
Pressure
 
kPa
Adjustable
Set Point Range
Deadband
Approximate
kPa
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
kPa
Decreasing
Pressure

kPa
Model
646DCE*
 
Wetted
Parts
    High Low
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCE1 Stainless
Steel
Viton
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCEM1
5171 6895 6895 3447 62 - 517.1 27.5 - 475.7 41.3 DCE2
  
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
bar
Proof (Test)
Pressure
 
bar
Adjustable
Set Point Range
Deadband
Approximate
bar
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
bar
Decreasing
Pressure

bar
Model
646DCE*
Wetted
Parts
    High Low
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCE1 Stainless
Steel
Viton
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCEM1
52 69 69 34.5 0.62 - 5.2 0.21 - 4.78 0.414 DCE2
  
  • bar: 52
  • kPa: 5,171
  • psig: 750

Proof Pressure - Both Ports

Below describes the proof pressure - both ports range of the entire series.
  • bar: 69
  • kPa: 6,895
  • psig: 1,000

Proof Pressure - Low Over High

Below describes the proof pressure - low over high range of the entire series.
  • bar: 34.5
  • kPa: 3447
  • psig: 500

Proof Pressure - High Over Low

Below describes the proof pressure - high over low range of the entire series.
  • bar: 69
  • kPa: 6,895
  • psig: 1,000

Operating Temperature

  • -40° to 86° C (-40° to 187° F)

Deadband, Approximate

Deadband below describes the approximate deadband range of the entire series, for specific values by model click a desired unit of measurement below.
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure

psi
Proof (Test)
Pressure

psi
Adjustable
Set Point Range
Deadband
Approximate
psi
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure

psi
Decreasing
Pressure

psi
Model
646DCE*
Wetted
Parts
    High Low
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCE1 Stainless
Steel
Viton
750 1000 1000 500 2 - 18 0.5 - 16.5 1.5 DCEM1
750 1000 1000 500 9 - 75 4 - 69 6 DCE2
  
Operating & Ordering Data:
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
kPa
Proof (Test)
Pressure
 
kPa
Adjustable
Set Point Range
Deadband
Approximate
kPa
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
kPa
Decreasing
Pressure

kPa
Model
646DCE*
 
Wetted
Parts
    High Low
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCE1 Stainless
Steel
Viton
5171 6895 6895 3447 13.8 - 124 3.4 - 113.7 10.3 DCEM1
5171 6895 6895 3447 62 - 517.1 27.5 - 475.7 41.3 DCE2
  
MODEL 646DCE 1/2" Stainless Steel Pressure Port & Welded Diaphragm
Maximum
System
Pressure
 
bar
Proof (Test)
Pressure
 
bar
Adjustable
Set Point Range
Deadband
Approximate
bar
Model Number &
 Wetted Parts
Both
Ports
 Simult.
High over Low
Low over High
Increasing
Pressure
 
bar
Decreasing
Pressure

bar
Model
646DCE*
Wetted
Parts
    High Low
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCE1 Stainless
Steel
Viton
52 69 69 34.5 0.138 - 1.24 0.035 - 1.24 0.103 DCEM1
52 69 69 34.5 0.62 - 5.2 0.21 - 4.78 0.414 DCE2
  
  • bar: 0.103 to 0.414
  • kPa: 10.4 to 41.3
  • psi: 1.5 to 6

Process Connection - Threaded

  • 1/2" Female NPT Welded Diaphragm - Internal with Port Cavity

Environmental Protection

  • Hazardous Area
  • NEMA 4, 7, 9, 13 / IP54, 66

Switch Type

  • DPDT
  • SPDT

Electrical Assembly

  • Hermetic Seal

Electrical Rating

Electrical Characteristics:
VOLTS AMPERES
SPDT DPDT "M" Dbl Brk"X"
Resistive Resistive Resistive
Silver Contacts
125 AC - 50/60 Hz 15 5 15
250 AC - 50/60 Hz 15 5 15
480 AC - 50/60 Hz 15 - 15
28 DC     - 5 -
125 DC     0.4 0.5 0.4
250 AC - 50/60 Hz 0.2 - 0.2
Gold Contacts
125 AC - 50/60 Hz  1 Max 1 Max -
30 DC     1 Max 1 Max -
SPDT (Single Pole Double Throw)
A SPDT switching element has one normally open, one normally closed and one common terminal. Three terminals mean that the switch can be wired with the circuit either normally open (N/O) or normally closed (N/C).

DPDT (Double Pole Double Throw)
A DPDT switching element has six electrical terminals. In simple terms, it is two SPDT switching elements operating simultaneously at the same settings. This type of switch can handle two independent circuits without using a relay.

Normally Closed Switching Element
A Normally Closed (NC) Switching Element is one in which the terminals are wired so that current can flow through the switching element until the plunger pin is actuated to open the circuit.
  • 1 A at 125 Vac, 50/60 Hz
  • 11 A at 125/250 Vac Resistive, 5 A at 28 Vdc, 0.5 A at 125 Vdc
  • 15 A at 125/250/480 Vac Resistive 0.5 A at 125 DC, 0.2 A at 250 DC

Electrical - Free Leads

Available selections listed below, free leads are standard.
  • 18" (45 cm) Free Leads
  • 18" (45 cm) Teflon Leadwire

Electrical Contacts

Available electrical contact materials listed below, silver is standard.
  • Gold
  • Silver

Electrical Connectors

  • 1/2" Male NPT

Electrical Certification

  • ±5%
  • 8-12 Vdc

Enclosure/Body Material

  • Aluminum

Process Connection Material

  • 316 Stainless Steel

O-Ring Material

Available O-ring materials listed below, viton is standard.
  • Ethylene Propylene
  • Viton

Diaphragm Material

  • Stainless Steel