Merlin RS Installation & Operation Manual
REV 06 Page 10 of 12
TECHNICAL SPECIFICATION
Mechanical
Mounting
Wall Mounted
Entry
1/2
”
12.5mm DIA Rear Entry
Size (W x H x D)
86 x 114 x 35mm (Low Profile RS - 86 x 114 x 25mm)
Weight (Max)
0.164Kg max
Enclosure
ABS UL Flame retardant
–
IP40
Electrical
24V AC/DC Power Rating
12-24VDC (11-32 VDC) / 24VAC, (20-27 VAC) 50-60Hz
230VAC Power Rating
Nominal 230VAC, (90-250V AC), 50-60Hz
Internal Fuse
Resettable PPTC 240VAC, 400mA
Communication
127 units max
Power Consumption Max
5W Max
Environmental
Operating Temperature
-10 to 50°C
Storage
10-30°C / 0 to 95% RH
Humidity
0 to 95% RH (continuous) non-condensing.
Atmospheric Pressure
80 to 110Pa
Altitude
<2000m
Installation Cat (230V Voltage)
II (Class 2) Pollution Degree 2
Installation Cat (24V Voltage)
III (Class 3) Pollution Degree 2
I/Os
Analog Outputs
3x Linear 0-10V/2-10V CO2, Temperature & Humidity.
Thermistor (10K3)
Digital Networks
BACnet MS/TP / MODBUS RTU (Parity: None Data bit: 8bit Stop bit: 1)
Relay Outputs
1x SPST 70mA
Thermistor
Betatherm 10K3A1B
For alternative Thermistors, contact your supplier
Cable Spec
Power
1.0
–
2.5mm
2
max
Analog Output
1.0
–
2.5mm
2
max
Digital Output
1.0
–
2.5 mm
2
twisted pair + ground, shielded cable with 120Ω
characteristic impedance.
Relays
1.0
–
2.5mm
2
max
User Interface
Language
English
Optional Display
2.8” TFT
Optional LED Indication
Green: Power (OK)
Yellow: Warning (Pre-Alarm)
Red: Danger (Alarm)
Conformance
Safety
BS 61010-1 (CE / UKCA)
Electromagnetic Compatibility
BS 50270 (CE / UKCA)
Other (Applied or Considered)
IGEM/UP/11
BS 50543
Sensing
CO2
(ppm)
Temperature
(°C)
Humidity
(%RH)
Sampling: Diffusion Type NDIR
Indication Range: 400
–
5000ppm
Response: t90 <120s
Calibration: ABC Logic Self Calibration -
Warm Up Time: ~1 Minute
Accuracy: 5% FS @ 25°C
Lifespan: >5 Years
Resolution: 1ppm
Fully Calibrated
Normal Indication Range: 0-50°C
Response: t63% @ 25°C ~20s Typical
Excellent long term stability
Strong anti-interference
Warm Up Time: ~1 minute
Accuracy: ±0.5° @ 10-45°C
Resolution: 0.1°
Fully Calibrated
Indication Range: 0-100% RH
Quick Response: t63% @ 25°C ~8s
Excellent long term stability
Strong anti-interference
Warm Up Time: ~1 minute
Accuracy: ±2% @ 15-30°C (20-90%RH)
Resolution: 0.1%