Features
● Wall-mount or duct-mount version
● Industrial IP65 housing
● Two analog outputs settable to 4-20 mA or 0-10 V
● RS485 Modbus RTU digital interface
● Two relays for alarm / ventilation control
● Attached or remote sensor

Specifications
Calibration
Sensor type
Sampling method
Typical detection range
Resolution / digital unit
Response time
Signal update
Sensor lifetime
Maintenance interval
Self-diagnostics
Warm-up time
Power supply
Power consumption
Digital interface
Analog outputs
Output scale width
Output relays
Default alarm setpoints
Enclosure

Carbon dioxide CO2
Photoacoustic or
Dual beam NDIR
Diffusion
0…10 000 ppm (ordering code 10K)
0…40 000 ppm (ordering code 40K)
0…5% vol (ordering code 50KN)
Up to 100% CO2
on request
1 ppm for 10K
10 ppm for 40K
0.01% vol for 50KN
T60 ≤ 60 s for 10K/40K
T50 ≤ 20 s; T90 ≤ 60 s for 50KN
Every 5 seconds for 10K/40K
Every 1 second for 50KN
~ 10 years for 10K/40K
~ 5 years for 50KN
No field recalibration if ABC algorithm is
enabled for 10K/40K
12 months for 50KN
Full functionality check at start-up
≤ 1 min
12…36 VDC (default),
24 VAC or 230 VAC as options
< 2 VA RS485, Modbus RTU protocol 2 × 4-20 mA / 0-10 V, user settable Recommended: 20-100% of the range; > 10 × resolution in any case
2 × SPST relays (closing contact),
250 VAC / 30 VDC, 5 A max
Determined by user
within 5-95% of the range
Grey ABS plastic, wall mount,
protection class IP65
Wall mount version
Duct mount version
4-20 mA
0-10 V IP65 RS485
Modbus
Ask for other versions or custom designed products
Sensor Technologies
Measurement & Control Instrumentation Updated 27.07.2022
Updated 27.07.2022
Dimensions
Remote sensor probe
Operating environment
Operating conditions
H87 × W82 × D55 mm
Protection IP65, shielded cable
default cable length 3.0 m
Industrial indoor and outdoor locations
-40…+60 °C, 0…100 %RH; 0,9…1,1 atm;
Explosion-safe areas;
Non-aggressive atmosphere
Connection diagrams
Remote probe
Wall mount remote probe with fixing clamp (default
version)
Remote probe with rubber flange and three self-tapping
screws (on request)
Version without PSU Version with PSU
Jumpers
J1 OUT1 type (open: 4-20 mA; closed 0-10 V)
J2 OUT2 type (open: 4-20 mA; closed 0-10 V)
X6 Reset Modbus network parameters to default
X4 terminals
OUT1 4-20 mA / 0-10 V output
OUT2 4-20 mA / 0-10 V output
0V 0 V / 24 VAC Neutral (optional)
A RS485 A / Data +
B RS485 B / Data –
+U +24 VDC / 24 VAC Phase (optional)
X5 terminals (optional)
L 90…265 VAC Phase
N 90…265 VAC Neutral
RE1 NO Relay 1, normally open terminal
RE1 COM Relay 1, common terminal
RE2 NO Relay 2, normally open terminal
RE2 COM Relay 2, common terminal
Evikon MCI OÜ • Teaduspargi 7/9, Tartu, 50411 Estonia • Tel +372 733 6310 • info@evikon.eu • www.evikon.eu
Updated 27.07.2022
50KN sensor Remote probe
With 50KN sensor dimensions
Wall mount remote probe with fixing clamp (default
version)
Remote probe with rubber flange and three self-tapping
screws (on request)