Copyright HK Instruments 2017
www.hkinstruments.fi
Installation version 5.0 2017
STEP 3: CONFIGURATION
Configuration of the CDT2000 Duct series device consists of:
Configuration menu options. (Display versions only.)
Press the select button to accept changes. Move to the next set
-
ting by pressing the down button.
1) Activate the device Menu by pushing the select button for 2
seconds.
2) Select the CO
2
low limit for output band: 0...1900 ppm.
For CE compliance a properly grounded shielding cable is
required.
1) Unscrew the strain relief and route the cable(s).
2) Connect the wires as shown in figure 2a.
3) Tighten the strain relief.
CO
2
T
24 V
GND
+
Power Supply
24VDC / 24VAC
Output 0/2...5/10 V
Output 0/2...5/10 V
CO
2
OUT MIN
400 CO
2
ppm
SELECT
UP
DOWN
3) Select the CO
2
high limit for output band: 500...2000 ppm.
CO
2
OUT MAX
2000 CO
2
ppm
SELECT
UP
DOWN
4) Select the temperature low limit for output band: 0...45.0 °C or
32...112 °F.
TE OUT MIN
0.0 °C
SELECT
UP
DOWN
5) Select the temperature high limit for output band: 5...50.0 °C
or 42...122 °F.
6) Select the output maximum voltage: 5 V / 10 V.
TE OUT MAX
50.0 °C
SELECT
UP
DOWN
MAX OUTPUT V
10 V
SELECT
UP
DOWN
7) Select the output minimum voltage: 0 V / 2 V.
MIN OUTPUT V
0 V
SELECT
UP
DOWN
8) Push the select button to exit menu.
SELECT
EXIT MENU
SELECT
STEP 2: WIRING DIAGRAMS
NOTE! When using long connection wires it may be necessary to use a
separate GND wire for voltage output current to prevent measurement
distortion. The need for an extra GND wire depends on the cross sec
-
tion and length of the used connection wires. If long and/or small cross
section wires are used, supply current and wire resistance may gener
-
ate a voltage drop in the common GND wire resulting in a distorted
output measurement.
CO
2
T
24 V
GND
+
Power Supply
24VDC / 24VAC
Output 0/2...5/10 V
Output 0/2...5/10 V
V
V
Figure 2a - Wiring diagram
Figure 2b - Wiring diagram: Extra GND wire
