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Test & Measurement
Instruments
CL11 Indoor Air Quality Data Logger
The CL11 desktop display unit is the latest development of an inexpensive multimeter that simultaneously measures and records CO2, humidity and temperature. Equipped with the ROTRONIC HYGROMER® IN-1 humidity sensor, this instrument offers unbeatable value for money. Using the ROTRONIC software package SW2.x, it can be easily set to record as required and data can then be downloaded, saved and analyzed.
Features
- Measures and logs CO2, relative humidity and temperature
- Calculates the dew point
- Hygromer® IN-1 humidity sensor
- 40,000 data point memory for CO2, humidity and temperature values
- Maximum, minimum and average value display
- Adjustable audible and visual CO2 alarm
- Display with backlight
- Optional external temperature probe
- Includes software for configuration and data download
Specifications & Spare Parts
| Dimensions | 157 x 120 x 45 mm |
| Weight | Approx. 200g |
| Range of Application | 0…50 °C / 0…100 %RH, non-condensing |
| Accuracy at 23 ±5 °C | ±30 ppm ±5 % of the measured value, <2.5 %RH (10…90 %RH), ±0.3 °K |
| Measuring Range | 0…5,000 ppm; 0…100%RH; -20…60°C |
| Measurement Principle | Non-dispersive infrared (NDIR) with automatic baseline correction (ABC) |
| Adjustment Points | Automatic calibration, manual calibration at 400 ppm and 35, 80 %RH |
| Pressure Dependency | +1.6 % reading per kPa |
| Null Drift | <10 ppm/year |
| Power Supply / Power Consumption | Via AC1214 AC adapter (included in the delivery package) |
| Current Consumption | 50 mA |
| Measured Value Memory | 40,000 values with timestamp, automatic recording (%RH / °C / CO2 / external temperature probe) |
| Warm-up Time | <1 min |
| Long-term Sensor Stability | < 1.5 %RH per year |
| Humidity Sensor | ROTRONIC HYGROMER® IN-1 |
| Temperature Sensor | Thermistor |
| Response Time | <10 sec @ 30 cc/min flow, <3 min diffusion time |
| Response Time t63 | <30 s, without filter |
| Parameters Shown | CO2, relative humidity, and temperature |
| Alarm Indicators | Adjustable for CO2 measurement |
| Real-Time Clock with Backup Battery | Yes |
| Software | ROTRONIC SW21 free of charge, HW4 subject to charge |
| Housing | ABS |
| IP Protection Rating | IP30 |
| Maintenance | No maintenance (standard indoor application) |
