Rotronic CF5 Specifications

DATA LOGGER FOR CO2, HUMIDITY AND TEMPERATURE

INDOOR AIR QUALITY
DATA LOGGER

• Measures and logs CO2, relative humidity and temperature

• ROTRONIC HYGROMER

• 40,000 data point memory for CO

and temperature values

• Maximum, minimum and average values displayed

• Adjustable audible and visual CO

• Optional external temperature probe

• Includes software for confi guration and data download

®

IN-1 humidity sensor

, humidity

2

alarm

2

BE PRECISE:

THE MAIN ADVANTAGES AT A GLANCE

The CL11 benchtop display unit is the latest development of an inexpensive multiple parameter meter that
simultaneously measures and records CO2, humidity and temperature. Equipped with the field-tested
ROTRONIC HYGROMER® IN-1 humidity sensor, this instrument offers unbeatable value for money. Using the
ROTRONIC software package SW21, it can be easily set to record as required and data can then be downloaded,
saved and analyzed.

Sensors / Calibration

• HYGROMER

• Calibration of humidity sensor at 35/80 %RH

• Automatic CO

Data logging function

• 40,000 data point memory for CO
and temperature values

• Data download using the included ROTRONIC
Software SW21 or with the optional HW4 Software

Connections

• Mini USB port for connection to a PC

• 5 VDC power supply connector
for the included AC adapter

CO

alarm

2

• Adjustable audible CO

Large display

• With backlight

®

IN-1 humidity sensor

calibration and manually at 400 ppm

2

, humidity

2

alarm

2

Controls

• Large buttons for easy operation

Temperature probe

• External temperature probe AC1215

(optional)

APPLICATIONS

Indoor air quality

PRINCIPLES

The CL11 data logger evaluates air quality with the combined measurements of CO2, humidity, and temperature. These
measurements are important to understand Indoor Air Quality (IAQ) in classrooms, conference and waiting rooms, as well as any
indoor areas where people gather. A high concentration of carbon dioxide can develop quickly when closed rooms with insuffi cient
ventilation are fi lled with people.
Carbon dioxide (CO
concentrations. The proportion of CO

3.8 % by volume CO
increase quickly leading to fatigue and loss of concentration for the rooms occupants. In order to initiate improvements to the air
quality, for example by increasing the supply of fresh air, it is important to measure the key parameters of indoor air quality. These
parameters are CO

) is a colorless and odorless gas that exists in the earth’s atmosphere and which is dangerous in high

2

in natural ambient air is about 0.04 % or 400 ppm. Exhaled air contains approximately

2

, which quickly mixes with the ambient air. When closed rooms are insuffi ciently ventilated, the levels of CO

2

, humidity, and temperature.

2

2

Guidelines

350 - 450 ppm 400 - 1,200 ppm > 1,000 ppm 5,000 ppm

Fresh air outdoors Room air Fatigue and loss

of concentration

become apparent

Maximum permissible

value at the workplace

during an 8-hour

workday

(0.5 %vol)

38,000 ppm

(3.8 %vol)

Breathing air

(direct exhalation)

> 100,000 ppm

(10 %vol)

Nausea, vomiting,

loss of consciousness

and death

44 mm

TECHNICAL INFORMATION

Dimensions

157 mm

85 mm

120 mm

44 mm

45 mm

Suitable accessories

Art. no. Description
ER-15 Humidity calibration device
EA35-SCS Humidity standard 35 %RH
EA80-SCS Humidity standard 80 %RH
AC1215 External temperature probe

Included

1 CL11 data logger
1 AC adapter AC1214
1 ROTRONIC software SW2.x

General

Parameters CO2, relative humidity and temperature
Range of application 0…50 °C / 0…100 %RH, non-condensing
Power supply Via AC1214 AC adapter (included in the delivery package)
IP protection IP30
Clock Real time clock with 2 min. battery backup

62 mm

Alarm Adjustable for CO

measurement

2

Technical information/Functions

Current consumption 50 mA
Warm-up time <1 min.
Memory capacity 40,000 values with time stamp, automatic recording

(%RH / °C / CO

/ external temperature probe)

2

CO2 measurement

Measurement principle Non dispersive infrared (NDIR)

Measurement range 0…5,000 ppm
Accuracy at 23 °C ±5 K ±30 ppm ±5 % of the measured value
Response time <10 sec @ 30 cc/min. fl ow, <3 min diffusion time
Adjustment point Automatic calibration, manual calibration at 400 ppm
Pressure dependence +1.6 % reading per kPa
Null drift <10 ppm/year
Maintenance No maintenance (standard indoor application)

with automatic baseline correction (ABC)

Humidity measurement

Humidity sensor ROTRONIC HYGROMER® IN-1
Measurement range 0...100 %RH
Accuracy at 23 °C ±5 K <2.5 %RH (10...90 %RH)
Adjustment points 35, 80 %RH
Response time τ63 <30 s, without fi lter
Long-term stability <1.5 %RH / year

Temperature measurement

Sensor Thermistor
Measurement range -20...60 °C
Accuracy at 23 °C ±5 K ±0.3 °K
Response time 4 s

Conformities / Housing

CE / EMC compatibility EMC DIRECTIVE 2004/108/EC, standard EN61326-1:2006
Housing material ABS
Dimensions 157 x 120 x 45 mm
Weight Approx. 200 g

Software ROTRONIC SW21 free of charge, HW4 subject to charge

External temperature probe AC1215 (available as optional extra)
Sensor Thermistor
Measurement range -20...70 °C
Accuracy

±0.6 °C @ 5...40 °C, ±1.0 °C rest of range
Material of probe Stainless steel
Material of handle PVC
Probe dimensions Ø 3.8 x 100 mm
Handle dimensions Ø 12.3 x 74 mm
Cable length 116 cm
Connector Jack plug Ø 2.5 x 11 mm

ROTRONIC AG, Grindelstrasse 6, CH - 8303 Bassersdorf, Tel. [phone], Fax [phone], www.rotronic.ch

ROTRONIC Instruments (UK) Ltd, Crompton Fields, Crompton Way, Crawley, West Sussex, RH10 9EE, UK, Phone [phone], Fax [phone], www.rotronic.co.uk

ROTRONIC Instrument Corp, 135 Engineers Road, Hauppauge, NY 11788, USA , Phone, [phone], Fax, [phone], www.rotronic-usa.com

59036E/2013-11