WMM 50 is a wall-mounted carbon dioxide meter that uses diffusion to monitor carbon dioxide (CO2) gas levels and ambient temperature (ºC / ºF) indoors. This indoor air quality meter features an alarm-activated potential-free contact that can, for example, activate a fan to reduce CO2 gas concentration in the room.

The PCE-WMM 50 alert meter consists of two parts: the sensor unit and the remote display unit. This allows for safe monitoring outside the exposure zone.

By monitoring CO2 concentration, the indoor air quality meter helps protect workers against the health hazards associated with CO2, a colorless and odorless gas used in the food, metal, chemical and waste management industries.

Carbon Dioxide Meter WMM 50

  • CO2 measurement range 0 ... 50,000 ppm (5%) (vol.) NDIR sensor
    Temperature (gas / environment) 0 ... +45 °C / +32 ... +113 ºF
    Supply of gas samples By diffusion
    Alarm contacts - 1 potential-free change-over contactor to control external devices (NO/NC) by releasing alarm 1
    - Switching power: 30 V DC / 250 V AC, max. 2 A
    Alarm thresholds Alarm 1
    0.5 / 1 / 1.5 / 2 %
    Alarm 2 
    1.5 / 2 / 2.5 / 3 / 3.5 / 4 %
    Menu items Function test of connection between detection unit and alarm unit, calibration, switch between °C and °F, alarm 1, 2 and factory setting
    Display elements - 4-digit digital display for measured gas concentration within range 0 ... 9999 ppm 
    - 3-digit digital display for measured gas concentration within range 1 ... 5 %
    - Additional 3-digit digital display for measurement and temperature in °C and °F
    - LEDs for operation, alarm 1, 2 and monitoring of voltage supply
    Operating elements Reset, menu selection, enter
    Safety Continuous self-surveillance of temperature range, sensor lifetime, unplausible values, EEPROM system, internal data transfer
    Enclosure Synthetic, IP54-rated, watersplash proof
    Dimensions Approx. 168 x 125 x 47 mm / 6.62 x 4.93 x 1.85" (without connections)
    Voltage supply (adapter) 100 ... 240 V AC, 50 / 60 Hz

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