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 %
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