HK Instruments DPT-Flow Series Installation Instructions page 3

STEP 2: WIRING DIAGRAMS
For CE compliance, a properly grounded shielding cable is required.
1) Unscrew the strain relief and route the cable.
2) Connect the wires as shown in figure 2a and 2b.
3) Tighten the strain relief.
Figure 2a - Wiring diagram: Volume flow output
0–10 V / 4–20 mA
+ Power supply
24 VDC / 24 VAC
Figure 2b - Wiring diagram: Pressure output
0–10 V / 4–20 mA
+ Power supply
24 VDC / 24 VAC
Figure 2c - Output mode selection
Jumper installed to the two upper pins on the left side:
4–20 mA output selected for flow
Jumper installed to the two lower pins on the left side:
0–10 V output selected for flow
Jumper installed to the two upper pins on the right side:
4–20 mA output selected for pressure
Jumper installed to the two lower pins on the right side:
0–10 V output selected for pressure
STEP 3: CONFIGURATION
1) Select the functioning mode of the flow meter:
- Select Manufacturer when connecting DPT-Flow to a fan with
pressure measurement points
- Select Common probe when using DPT-Flow with a common
measurment probe that follows the formula:
q = k ∙ √∆P (i.e. FloXact)
MANUFACTURER
Common probe
Common probe
Copyright HK Instruments 2018
V OUT
P OUT
24 V
GND
V OUT
P OUT
24 V
GND
SELECT
UP
DOWN
SELECT
Flakt Woods
CONFIGURATION
2) If Common probe selected: select measurement units used in the
formula (aka Formula unit) (i.e. l/s)
FORMULA UNIT
l/s
3) Select K-value
a. If manufacturer selected in step 1:
Each fan has a specific K-value. Select the K-value from fan manufac-
turer's specifications.
Manufacturer:
Fläktwoods
Rosenberg
Nicotra
Comefri
Ziehl
Ebm-papst
Gebhardt
b. If Common probe selected in step 1:
Each common probe has a specific K-value. Select the K-value from
common probe manufacturer's specifications.
Available K-value range: 0.001...9999.000
K-VALUE
9000.000
4) Select pressure unit for display and output: Pa, kPa, mbar, inWC or
mmWC
PRESS.UNIT
Pa
5) Pressure output scale (p OUT). Select pressure output scale to
improve output resolution.
DPT-Flow-1000
100–1000 Pa
0.1–1.0 kPa
1.0–10 mbar
10–100 mmWC
0.4–4.0 inWC
P OUTPUT MAX
2000 Pa
6) Select flow unit for display and output:
Flow volume: m
Velocity: m/s, f/min
FLOW UNIT
m /s
3
UP
DOWN
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CONTINUED
SELECT
UP
DOWN
K-value:
k = 0,3...99
k = 37...800
k = 10...1500
k = 10...2000
k = 10...1500
k = 10...1500
k = 50...4700
SELECT
UP
DOWN
SELECT
UP
DOWN
DPT-Flow-2000 DPT-Flow-5000
200–2000 Pa 500–5000 Pa
0.2–2.0 kPa 0.5–5.0 kPa
2.0–20 mbar 5.0–50 mbar
20–200 mmWC 50–500 mmWC
0.8–8.0 inWC 2.0–20 inWC
SELECT
UP
DOWN
/s, m /h, cfm, l/s, none
3 3
SELECT
UP
DOWN
DPT-Flow-7000
700–7000 Pa
0.7–7.0 kPa
7.0–70 mbar
70-700 mmWC
2.5–30 inWC
Installation version 7.0 2018