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Q4C Series 4 Sensor Digital Controllers

Brand: Quatrosense Environmental Ltd

The Q4C is a multi-channel controller display and alarm unit that utilizes digital communications to interface with a maximum of four remote digital QEL transmitter/sensors.

Specifications

Input Power

  • 24 V ± 4 Vac or DC

Fuse

  • F1: 4A slo-blo
  • F2: 1A very fast

Enclosure

  • NEMA 4X Type General Purpose

Enclosure Material

  • ABS plastic

Dimensions

  • 7” x 4.7” x 3.5” (180 x 120 x 90 mm)

Temperature

  • Industrial -20° C to +50° C (-4° F to +122° F)

Humidity

  • Continuous 5 to 95 % RH, non-condensing
  • Intermittent 0 to 99 % RH, non-condensing

Input Types

  • RS-485 digital port for up to 4 QEL transmitter/sensors.
  • RS-232 programming port using RJ-11 connector

Output Ports

  • RS-485 to host M-CONTROLLER
  • RS-232 programming port using RJ-11 connector
  • 4-20 mA signals scalable

LED Status Lights

  • TX/RX: Relay 1, Relay 2, Relay 3, Relay 4

Recommended Cable

  • Power: Twisted shielded pair
  • Communication (RS-485): Belden 9841 or equivalent twisted shielded pair, 120 ohm

Panel Controls

  • 4 tactile and audible keypad

Audio Indicator

  • 24 Vdc transistor outputs, buzzer, strobe, horn

Relay Outputs

  • 4 SPDT rated 10 Amps resistive 250 Vac / 30 Vdc

Relay Assignment

  • Independent, individually set to one or all transmitter/sensors

Time Delays

  • Individually set, make, break, average, and voting, 0 to 59 minutes

LCD Digital Display

  • 2 x 8 back-lit LCD displaying transmitter address, gas type, concentration and alarm status

Display Scroll Rate

  • Adjustable 1 - 9 seconds

Power Supply Output

  • 24 V supplied externally through controller
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