Appendices
Appendix A – Product Specification
1. Display
Type: Red/green, 7-segment, 5-digit primary display, 1-digit secondary display.
Height: 18mm (0.71inches) primary display, 7mm (0.3 inches) secondary display
Annunciators: Alarm 1 and Alarm 2 status
2. Sensor
Dewpoint Range: From –110°C to +20°C
Accuracy: ± 2°C over full range
Operating Temperature:
Storage Temperature:
Mechanical Connections:
Electrical Connection: Male coaxial plug
Approvals: CE, Atex -
3. Hygrometer Input
Sampling Rate: 10Hz
Resolution: 14-bits
Sensor short circuit detection: Detected within two seconds. All alarms become active
4. Transistor Outputs
Type: NPN open collector. Output 1 tied to Alarm 1. Output 2 tied to Alarm 2.
5. Relay Output 1
Contact Type: Single pole, double throw
Rating: 2A resistive, 120/240V, 50/60Hz
Lifetime: >500,000 operations at rated voltage/current
Isolation: Inherent
6. Relay Output 2
Contact Type: Single pole, double throw
Rating: 2A resistive, 120/240V, 50/60Hz
Lifetime: >500,000 operations at rated voltage/current
Isolation: Inherent
7. Linear (Re-Transmitted) Output
Ranges Available: 0-5V, 1-5V, 1-10V, 2-10V, 0-20mA and 4-20mA
Accuracy: ±0.5% max of display value
Load Impedance: 500Ω max for mA ranges, 500Ω min for voltage ranges
8. Serial Communications
Type: Serial asynchronous, UART to UART
Data Format: Open ASCII; one start bit, even parity, seven data bits and one stop bit.
Physical Layer: RS485
Maximum Number of zones 99
Baud Rate: Selectable – 1200, 2400, 4800 or 9600
9. Performance
Reference Conditions
Ambient Temperature: 20°C ± 2°C
Relative Humidity: 60 – 70%
Supply Voltage: 90 – 264V, 50Hz
Operating Conditions
Ambient Temperature: 0°C ± 55°C
Relative Humidity: 20 – 95% non-condensing
10. Environmental
Approvals: CE
EMC: Certified to EN61326
Notes: 1) For RF fields (10V/m 80% Am, 1kHz) the reading accuracy may be impaired
by up to –0.3% in the frequency band 87 to 109MHz.
2) For line-conducted disturbances induced by RF fields (10V 80% AM 1kHz).
The instrument is self recoverable in the frequency band 0.15-0.73 Hz
Safety: Complies with EN61010-1
Front Panel Seal: To IP66
Supply Voltage: 90 – 264V, 50/60Hz
Power Consumption: 7.5VA max
11. Physical
Dimensions: Height – 48mm
Width – 95mm
Depth – 110mm without sensor connector.
Weight 0.21 kg max.
Mounting: Panel-mount; press-fit fixing. Panel cut out – 45mm x 92mm.
Terminals: Screw type
dewTEC DS2000 User’s Manual Page 22
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