Omni Instruments
contact icon+44 (0) 1382 443000
+44 (0) 845 9000 601

Contact our technical sales team now to discuss your requirements

help icon
MY BASKET basket arrow


My Cart

You have no items in your shopping cart.

Click basket to edit.


Latest added news blog
MSR175 Shock Transportation Data Logger
Kenny Laidlaw
Oct 01,2018
The MSR175 shock transportation data logger is the newest miniature logger from MSR.  The MSR175 more >
Multi-Parameter Display

Multi-Parameter Display

Quick Overview

The CL11 benchtop display unit is an inexpensive multiple parameter meter that simultaneously measures and records CO2, humidity and temperature. The CO2 DISPLAY is a similar wall, or bench top mounted display. Equipped with the field-tested ROTRONIC HYGROMER® IN-1 humidity sensor, this instrument offers unbeatable value for money. Using the ROTRONIC software HW4, it can be easily set to record as required and data can then be downloaded, saved and analyzed. Both units also display the time, CO2 Display also includes the date..
View Options



  • Measurement ranges: -20 to +60°C, 0 to 100%RH & 0-9999ppm
  • 40,000 data point memory
  • Clear LCD with clock
  • Visual and audible alarms


CO2 Measurement
Measurement  principle Infrared (NDIR) with automatic calibration (ABC)
Measuring range 0.....9999 ppm
Accuracy at 23 °C ±5 K ±30 ppm ±5 % of the measured value @ 0...5000 ppm
Resolution 1 ppm
Adjustment point 400 ppm
Pressure dependence +1.6 % reading per kPa
Null drift <10 ppm/year
Maintenance No maintenance (standard indoor applications)
Humidity Measurement
Humidity sensor ROTRONIC HYGROMER®  IN-1
Measuring range 0...100 %rh
Accuracy at 23 °C ±5 K ±2 %rh (10…90 %rh), others ±5 %rh
Resolution 0.1 %rh
Adjustment points 35, 80 %rh
Response time 63 <30 s, without filter
Long-term stability <1.5 %rh/year
Temperature Measurement
Sensor NTC thermistor
Measuring range -20...60 °C
Accuracy at 23 °C ±5 K ±0.3 K
Resolution 0.1 °C
Response time 4 s
Power supply AC1214 Mains Power Adapter
Software HW5
CE / EMC compatibility EMC Directive 2014/30/EU, EN 61326-1:2012
Housing material ABS
Dimensions 157 x 120 x 45 mm
Weight 200 g

Availability: Stock Item


Components / Downloads

For further information, technical advice, or a quotation please call or email us. If you are not sure which product you need one of our technical sales advisors will be happy to discuss your application. We also accept company purchase orders by fax or post. Credit card orders can also be placed over the phone for any product.

CO2 Wall/Benchtop Display Unit
CO2 Multi-Parameter Display with an integrated sensors. Wall or bench-top mounting options. Measuring range: -20 to +60°C & 0 to 100%RH, 0 to 5000ppm. The CO2 Display has an internal memory for up to 19,500 data points CO2 Display is powered by a 12V AC Mains Adaptor. IP30 housing, dimensions 157 x 120 x 45mm. Communications via mini USB port.
View FileDatasheet
   Size: (968.98 KB)
or call us for a quote
Power Supply Option
Mains Adaptor for CO2 DISPLAY. Mains 100...240VAC Plug to 12vDC.
or call us for a quote
CL11 Benchtop Display Unit
CL11 Multi-Parameter Meter with an integrated sensors and LED display. Measuring range: -20 to +60°C & 0 to 100%RH, 0 to 5000ppm. The CL11 has an internal memory for up to 40,000 data points CL11 is powered by an AC Mains Adaptor. IP30 housing, dimensions 157 x 120 x 45mm. Communications via mini USB port.
or call us for a quote
Power Supply Option
Mains Adaptor for CP11/CL11. Mains 100...240VAC Plug to 5vDC, mini USB out. Includes UK, EU and US Plug Options.
or call us for a quote