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3820 Series Pressure Transmitter

Brand: Gems Sensors, Inc

The 3820 Pressure Transmitter is a compact loop-powered (4-20 mA) transmitter, with a low power 1-5 Vdc option also available. These are the same as our 3800 Series with the addition of an integrated 30 V/120 mA switch. 

The switch setpoint is specified at time of order for factory setting, yet may be also field adjusted using the Gems Calibration Kit (that will also adjust the zero and span points of the transmitter). 

3820 Series Pressure Transmitters are suitable for hazardous locations and hostile environments, and are ideal for applications where dependable, continuous monitoring is required.

A rugged construction makes cost of ownership low.
Features
  • Combines Continuous Output with Adjustable Set Point Switch
  • FM and ATEX Approvals for Hazardous Locations
  • Field Adjustable – 5:1 Turndown
  • Compact, 316 Stainless Steel, Hermetically Sealed Enclosure
  • Stainless Steel Sensor, No O-Ring
  • Dual Seal Approval
  • Flush Mount Option Available

Specifications

Accuracy

  • ± 0.25 % of URL - BFSL
  • ± 2 % of URL

Ambient Temperature Range

  • -40° to 80° C (-40° to 176° F)

Approvals & Certifications

  • ATEX: II 2 G Ex d IIC T5 IP66
  • CE
  • FM (C,US): Class I, II, III, Div. 1, & Div. 2, Group A, B, C, D, E, F, G, T5, NEMA 4X

Burst Pressure

  • 10 x FSPR for psi: 0 to 2,500 (kPa: 0 to 17,240, bar: 0 to 172.4)
  • 20 x FSPR for psi: 0 to 1,000 (kPa: 0 to 6,895, bar: 0 to 68.95)
  • 4 x FSPR for psi: 0 to 10,000 (kPa: 0 to 68,950, bar: 0 to 689.5)
  • 40 x FSPR for psi: 0 to 250 (kPa: 0 to 1,724, bar: 0 to 17.24)
  • 8 x FSPR for psi: 0 to 5,000 (kPa: 0 to 34,470, bar: 0 to 344.7)

Cable Length

  • 6 feet (1.82 m)

Circuit Protection

  • EMI/RFI Protected
  • Reverse Polarity

Compensated Temperature

  • -40° to 80° C (-40° to 176° F)

Conduit Connection

  • 1/2" NPT Male

Electrical Connectors

  • 18 AWG Shielded Cable

Electrical Contacts

  • Normally Open Solid-State Relay

Electrical Rating

  • 30 V, 120 mA

Enclosure, Body Material

  • 316 Stainless Steel

Environmental Protection

  • Explosion-proof
  • Flameproof
  • IP66
  • NEMA 4X
  • Non-Incendive

Hysteresis

  • ± 0.25 % of URL - BFSL

Linearity

  • ± 0.25 % of URL - BFSL

Loop Resistance

  • 800 ohms at 24 Vdc

Mounting

  • Pipe

Name Plate, Tag Material

  • Stainless Steel

NPT Connection

  • 1/2" NPT Male
  • 1/4" NPT Female

Output

  • 1-5 Vdc (27 mW ± 5 mW @ 9 Vdc)
  • 4-20 mA

Overpressure & Static Pressure Limits

  • Overpressure: 2 x FSPR for psi: 0 to 10,000 (kPa: 0 to 68,950, bar: 0 to 689.5)
  • Overpressure: 3 x FSPR for psi: 0 to 100 (kPa: 0 to 689.5, bar: 0 to 6.89)

Pressure Range

  • bar: 0 to 690
  • kPa: 0 to 69,000
  • psi: 0 to 10,000

Process Temperature

  • -40° to 90° C (-40° to 194° F)

Repeatability

  • ± 0.25 % of URL - BFSL

Response Time

  • ≤ 5 ms

Stability

  • ≤ ± 0.5 % of URL Per Year

Storage Temperature

  • -40° to 90° C (-40° to 194° F)

Supply Voltage

  • 8-30 Vdc

Temperature Effect

  • ± 2 % of URL/38° C (100° F) at -40° to 80° C (-40° to 176° F)

Termination

  • Electrical Termination: 18 AWG Shielded Cable, 6 feet (1.8 m)

Turndown

  • 5:1 (Standard) (2:1 for 100 psi)

Wetted Materials

  • AISI 630 Stainless Steel, 17-4 PH

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