Tenmars ST-501 CO2 / Temperature / RH Monitor The Tenmars ST-501 with it’s non-dispersive infrared (NDIR) sensor measuring CO2, CO2 ventilation rate, temperature & humidity while ensuring long-term stability and durability. The Tenmars ST-501 CO2 / Temperature / RH Monitor is ideal for building HVAC monitoring, indoor air quality surveying or locating combustible fumes. Providing a large easy-to-read display, internal CO2 alarm buzzer and inbuilt parameters capable of adjusting CO2 reading for altitude changes, the Tenmars ST-501 is suitable for use in most environments. The ST-501 also offers data logging of up to 50,000 records and fast USB download (under 10 seconds), with easy-to-use PC software perfect for data analysis. Tenmars ST-501 Applications: • Building HVAC monitoring • Indoor air quality survey • Locate the presence of combustion fumes from vehicles and appliances Tenmars ST-501 Specifications: CO2: 0 to 9999 PPM (2001 to 999ppm over range), accuracy of ±75 PPM or 8% of reading (0 to 2000ppm) Humidity: 0 to 100 RH, accuracy of 2.5% at 10% to 90% RH Temperature: 0°C to 70°C, accuracy of ±1°C at 25°C Signal Update: every 2 seconds Warm Up Time: < 2 minutes Operating Conditions: °C to 50°C (32°F to 122°F), 0 to 90% RH non-condensing Power Supply: 4 x type ‘AA’ Alkaline batteries Battery Life: approx 24 hours External Power Supply: 6V DC 0.5A
