HK Instruments DPT-Dual-MOD Series Installation Instructions page 3

STEP 3: CONFIGURATION
1) Activate the device Menu by pushing the the select button for 2
seconds.
Points 2–8 for AHU model only:
2) Select the functioning mode of the device:
- Select Manufacturer when connecting DPT-Dual-MOD-AHU to a
fan with pressure measurement points
- Select Common probe when using DPT-Dual-MOD-AHU with a
common measurement probe that follows the formula:
q = k ∙ √∆P (i.e. FloXact)
MANUFACTURER
Common probe
Common probe
3) If common probe selected: select measurement units used in the
formula (aka Formula unit) (i.e. l/s)
FORMULA UNIT
l/s
4) Select K-value
Each application has a specific K-value. Select the K-value from the
manufacturer's specifications.
Available K-value range: 0.001...9999.000
K-VALUE
9000.000
5) Select pressure unit for display and output: Pa, kPa, mbar, inWC or
mmWC
PRESS.UNIT
Pa
6) Select flow unit for display and output:
Flow volume: m /s, m /h, cfm, l/s
3 3
Velocity: m/s, f/min
FLOW UNIT
m 3 /s
7) Select the the type of sensor for input 1:
NTC10k, Ni1000-LG, Ni1000, Pt1000, VINPUT (voltage 0–10 V),
none (sensor 1 will not be shown on display)
SENSOR 1
NTC10K
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CONFIGURATION
7) Select the the type of sensor for input 2:
NTC10k, Ni1000-LG, Ni1000, Pt1000, VINPUT (voltage 0–10 V),
none (sensor 2 will not be shown on display)
SENSOR 2
NONE
9) Select the address for Modbus: 1...247.
ADDRESS
99
10) Select the baud rate: 9600/19200/38400.
UP
BAUD RATE
DOWN
9600
11) Select the parity bit: None/Even/Odd.
PARITY BIT
NONE
12) Select the pressure unit for display: Pa/inchWC/mmWC/psi/mbar.
(Not for AHU model)
PRESS. UNIT
Pa
13) Select the response time: 1...20 s.
RESPONSETIME
20 s
14) Push the select button to exit menu.
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EXIT MENU
STEP 4: ZERO POINT ADJUSTMENT
NOTE! Always zero the device before use.
Supply voltage must be connected one hour before the zero point
adjustment is carried out. Access via Modbus or by push button.
1) Loose both tubes from the pressure inlets + and -.
2) Regular model: Press the select button briefly.
AHU model: Press the select button for 3 sec to
enter the menu and select zero sensors.
3) Wait until the LED turns off and then install tubes again for the
pressure inlets.
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Installation version 6.0 2017
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