The GX-D500 CO2 alarm is a prof. warning device with fixed alarm thresholds at 1.5% CO2 for pre-alarm and 3.0% CO2 for main alarm. The threshold value for the alarm, which is clearly perceptible both acoustically and visually, was deliberately chosen so high that poor room air caused by exhaled CO2 from people does not lead to false alarms, but defects in technical systems are immediately and reliably detected. The exact values are based on the specifications of the technical guidelines for beverage dispensing systems in the catering industry.
In the event of an alarm, a potential-free changeover relay (230 V~ / 5 A) switches over, which can, for example, activate forced ventilation or close solenoid shut-off valves.Another potential-free changeover relay (60 V= / 5 A) switches over in the event of technical faults detected by the device itself and thus informs the building control system, for example.
In monitoring mode, both relays are energized and de-energized in the event of an alarm / fault.
A large illuminated 2×16 character display constantly informs about the currently measured CO2 value and, when scrolling through with the SERVICE button, about further status messages of the device. Thus, the temperatures inside the device are monitored, the alarms are counted, an error code is displayed in case of technical malfunctions or even the CO2 concentration at the last alarm is recorded in ppm.
With the optionally available USB calibration adapter cable, a zero point adjustment of the sensor can be carried out by the user himself on a regular basis or as required, because every sensor is subject to a natural drift. The preset spread of the warning thresholds is always maintained and can only be changed ex works.
Scope of delivery
- CO2 warning device GX-D500
- External sensor pre-mounted on 4 metre cable
- detailed operating and assembly instructions
- Mounting material: 4 large and 2 small screws and dowels, 2 screwdrivers, 2 large and one small PG cable gland
Technical data
Operating voltage: | 100 - 240 V AC / 50-60 Hz |
Power consumption: | max. 10 VA, typ. 3 VA, depending on operating state |
Sensor technology: | optical, infrared absorption, NDIR |
according to DIN 6653-2 inpartly Compliance | |
typical response time T90: | approx. 90 seconds |
Relay contact alarm Re1: | 250 V~ AC / 5 A (potential-free changeover contact) |
Relay contact fault Re2: | 60 V= DC / 5 A (potential-free changeover contact) |
Sound pressure control unit: | 85 dB(A) (100 cm distance) |
Software version control unit: | from P0.12 |
Functional area control unit: | -15°C ... +45°C / 10 ... 90% rH, non-condensing |
Functional area sensor: | 0°C ... 50°C / 10 ... 90% rH, non-condensing |
Sensor line: | 3x 0.14mm² - LiYY - 4 m - black - Ø 3.5 mm |
extendable with 3x 1.5 mm² up to 100 meters |
WEEE NO.: EN91394868
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