Data sheet

IR-640 CO2

Detcon Model IR-640 Detectors are non-intrusive "smart" sensors designed to detect and monitor carbon dioxide.

The available detection ranges are 0-0.3%, 0-1%, 0-3% and 0-5% by volume.

The sensor assembly consists of a miniature infrared optical sensor in a stainless steel housing that includes a splash guard with integral cal port, a pluggable control emitter circuit, a basic connection board and an explosion-proof enclosure.

  • CSA-NRTL Listed: Class I, Division 1, Groups B, C and D

  • Compatible with PLCs, SCADA, DCS, via 4-20 mA, and / or RS-485, and / or alarm relays

  • Sensor status and parameters accessible via RS-485 (Modbus ™)

  • Standard programmable relays (two alarms plus fault)

  • Simple Menu Driven Calibration - takes less than 3 minutes

  • Backlit LCD and LED indicators for FAULT and CAL status

  • Field replaceable miniature optical sensor

  • Pluggable field replaceable transmitter

  • Low power consumption 5 year sensor life expectancy

Sensor type

Non-dispersive infrared optics (NDIR)

Measuring range

0 - 0.3% / 0 - 1% / 0 - 3% / 0 - 5% by volume

Precision / Repeatability

± 5% FS

Response / compensation time

T50 <15 seconds

T90 <40 seconds

Zero Drift

<0.05% per year

Operating temperature range

-40 ° F to + 167 ° F; -40 ° C to + 75 ° C

Operating humidity range

0-99% RH without condensation

outputs

Linear 4-20 mA DC

RS-485 Modbus ™

3 relays (alarm 1, alarm 2, & fault)

Classified contacts 5 amps

Input voltage

22.5-28 VDC

Energy consumption

<3 watts @ 24 VCC

Electrical classification

Explosion

Class I, Division 1, Groups B, C, D

Protection against penetration

NEMA 4X, IP66

Safety Approvals

CSA / NRTL (US OSHA certified)

Sensor life / warranty

Sensor: 5 year pro-rated warranty

Transmitter: 2 years warranty