Q408 Multi-Channel Isolator

Brand: Eurotherm

The model Q408 is a DC powered, DIN rail mount, DC input signal conditioner, with 1,800 V isolation between input, output and power.

The field configurable inputs and outputs provide flexible, wide ranging capability for DC current and voltage signals.

The Q408 is available as a single channel signal conditioner (1 input / 1 output) or a multi-channel signal conditioner (2 inputs / 2 outputs).

All models maintain the high 1,800 V isolation level from channel to channel, as well as input to output to power.
Features
  • Field configurable input ranges
  • Field configurable output ranges
  • 1,800 Vac isolation
  • TouchCAL technology
  • High density DIN rail mounting
  • Universal DC power 10.8 to 26.4 Vdc
  • SnapLoc plug-in terminals

Specifications

Brand

Accuracy

  • Output Accuracy (2 mA / > 20 mV Input Spans): ± 0.1 % of Full Scale Input Typical
  • Output Accuracy (> 2 mA / > 20 mV Input Spans): ± 0.2 %, Maximum

Approvals & Certifications

  • CSA C22.2 - File No. LR42272
  • IEC 801-2
  • UL (C,US)
  • UL 508 (File No. E99755)

Display

  • Green LEDs

Electrical Connectors

  • Plug-In Terminal
  • Wire Termination: Socketed Screw Terminals for 12 to 22 AWG

Electrical Contacts

  • Normally Closed

Electrical Rating

  • 0-1 mA at 7.5 V, Maximum
  • 0-20 mA at 12 V, Maximum

Electromagnetic Rating

  • ESD Protection

Humidity

  • Operating: 15 to 95 % Relative Humidity, Non-Condensing at 45° C (113° F)
  • Soak: 90 % Relative Humidity, Non-Condensing for 24 Hours at 60° C (140° F)

Hysteresis

  • Output Accuracy (< 2 mA / < 20 mV Input Spans): ± 0.35 % of Full Scale Input Typical at 23° C (73.4° F)
  • Output Accuracy (< 2 mA / < 20 mV Input Spans): ± 0.5 %, Maximum

Input

  • 1-100 mA
  • 1-100 V
  • 20-500 mV
  • Calibrated Input: 4-20 mA
  • Current (Overvoltage): 60 V
  • Overcurrent: 170 mA, Protected by Self Resetting Fuse
  • Overvoltage: 200 V

Input Impedance

  • Current: 20 ohms Typical
  • Output Current (Source Impedance): > 100 kiloohms
  • Output Voltage (Source Impedance): < 10 ohms
  • Voltage: ≥ 100 kiloohms

Isolation

  • ≥ 1,800 Vdc or Peak AC between Input, Output, Power & Channel to Channel

Linearity

  • Output Accuracy (< 2 mA / < 20 mV Input Spans): ± 0.35 % of Full Scale Input Typical
  • Output Accuracy (< 2 mA / < 20 mV Input Spans): ± 0.5 %, Maximum

Mounting

  • DIN Rail Mounting

Operating Temperature

  • 0° to 55° C (32° to 131° F)

Output

  • 0-10 V
  • 0-20 mA
  • Calibrated Output: 4-20 mA
  • Compliance: 10 V, Maximum
  • Voltage Drive: 10 mA - Maximum

Power

  • 2.5 W, Maximum
  • 9-30 Vdc
  • Universal DC Power: 10.8-26.4 Vdc

Repeatability

  • Output Accuracy (< 2 mA / < 20 mV Input Spans): ± 0.35 % of Full Scale Input Typical
  • Output Accuracy (< 2 mA / < 20 mV Input Spans): ± 0.5 %, Maximum

Response Time

  • 200 milliseconds, Typical

Span & Zero Adjustments

  • Output Ripple (50 % Offset or Span Adjust): 50 % Offset or Span Adjust): 10 mV) [Effective Zero Offset, Effective Span Turn Down]: ≥ 90 % Except 20 mV/2 mA Range in which 50 % Is, Maximum

Stability

  • ± 0.025 % of Full Scale/°C, Maximum

Storage Temperature

  • -25° to 70° C (-13° to 158° F)

Switch Type

  • DIP Switches

Zero Offset

  • Pushbutton Adjustment (Inputs > 10 mV) Effective Zero Offset: ≥ 90 %

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