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Enabling better global research outcomes in soil, plant & environmental monitoring.

TS-2 Dewpoint Mirror Measuring System

The dewpoint mirror is a highly accurate and reliable method for measuring the absolute humidity of air or other gases.

The presented model belongs to the third generation of dewpoint mirror measuring systems, which now feature extended measuring ranges and meet modern requirements with respect to operation and data processing.

Control Unit TS-2

Display: 2 x 16 character alphanumerical LCD with backlight, character size 5.5 mm
Display ranges: -50.00 to +50.00 for dewpoint; -70.00 to +70.00 for temperature (requires external temperature sensor)
User interface: 3 keys for parameter input
Microcontroller: 80C196KC (16 MHz)
Data memory: Battery-backed RAM up to 256 kB
Analog outputs: 0 to 10 V and 4 to 20 mA for dewpoint and temperature, output ranges software-selectable
Alarm outputs: TTL-signal for dewpoint and temperature, alarm ranges software-selectable
Interface: RS 232, 9600 baud
Mains supply: Selectable 115/230 V AC, 50/60 Hz
Operating temperature: 0 to 50°C
Dimensions: 18.5 cm x 14.5 cm x 26.5 cm (W x H x D)
Weight: 4.7 kg (incl. 19”-housing)

Dewpoint Mirror Measuring Head TS-2M

Measuring principle: Optically scanned dewpoint mirror
Range: -50 to +50°C dewpoint
Accuracy: ±0.15°C at dewpoint temperatures above 0°C, ± 1°C at dewpoint temperatures below 0°C
Reproducibility: ± 0.05°C
Cooling: 2-stage Peltier cooler
Max. temperature difference: 60°C to environment
Temperature sensor: Pt 100, class A
Required flow rate: 0.5 to 15 l/min
Hose connections: Hose fittings for 6 mm inner diameter by 8 mm outer diameter tubing
Operating temperature: -20 to +60°C
Dimensions: Diameter 68 mm, height 98 mm
Weight: 800 g

Connecting Cable

TS-K5: Length: 5 m; Weight 0.4 kg
TS-K10: Length: 10 m; Weight 0.8 kg
TS-K20: Length: 20 m; Weight 1.6 kg

19″ Housings

TS-G1: Houses one TS-2 Control Unit
Size: 26.5 cm x 18.5 cm x 14.5 cm (L x W x H)
Weight: 2.6 kg
TS-G2: Houses two TS-2 Control Units
Size: 26.5 cm x 36.5 cm x 14.5 cm (L x W x H)
Weight: 3.8 kg
TS-G3: Houses three TS-2 Control Units
Size: 26.5 cm x 47 cm x 14.5 cm (L x W x H)
Weight: 5 kg

The Dewpoint Mirror Measuring System TS-2 consists of a Control Unit and the Dewpoint Mirror Measuring Head (TS-2M). The control unit has been designed to mount in a standard 19” rack, allowing easy integration into other systems.

Since the measuring head and the control unit are separate units connected via a long cable, the dewpoint can be measured directly on-site.

Temperature dependence of vapour pressure above water

Temperature dependence of vapour pressure above water

Connection of a Pt100 sensor to the optional temperature transducer enables the measuring gas temperature to be recorded. Relative humidity is also calculated by the software and displayed.

The dewpoint mirror measuring system is microprocessor-controlled. The menu structure of the internal software makes operation very simple. The control unit can be addressed via serial interface.