HK Instruments DPI Series Installation Instructions

INTRODUCTION
Thank you for choosing an HK Instruments DPI Series electronic
differential pressure switch. The DPI Series is intended for use
in commercial environments. It combines the advantages of an
electronic differential pressure switch (on-off relay) and a multi-
functional differential pressure transmitter to meet your job re-
quirements.
The DPI Series is comprised of the DPI1 with bi-directional meas-
urement ranges from ±0.4 to ±2.01 inWC, the DPI10 with meas-
urement ranges from 0.4 to 10.0 inWC.
All DPI Series devices include one relay, display, manual pushbut-
ton auto-zero and span point calibration. Optional features include
a second relay, and NIST standard calibration certificates.
APPLICATIONS
DPI series devices are commonly used in HVAC/R systems for:
• fan, blower and filter monitoring
• staircase pressure monitoring and alarm
• pressure monitoring in cleanrooms
• boiler pressure monitoring and alarm
SPECIFICATIONS
Performance
Accuracy (at applied pressure):
±0.7 % (±1.5 % initial)
%/FS from highest pressure range including:
general accuracy, temperature drift, linearity, hysteresis,
and repetition error).
Long term stability:
Typical 1 year
With : ± 0.004 inWC
Without : ± 0.032 inWC
Overpressure:
Proof pressure: 100 inWC
Burst pressure: 120 inWC
Zero point calibration:
Automatic with (-eZ) circuit or
manual via menu
Response time:
0.5–10 sec, selectable via menu
Technical Specifications
Media compatibility:
Dry air or non-aggressive gases
Measuring units:
Pa, kPa, mmWC, inWC, mbar selectable via menu
Measuring element:
Piezoresistive
Environment:
Operating temperature:
Without : 14–122 °F (-10–50 °C)
With : 23−122 °F (-5−50 °C)
Storage temperature: -4–158 °F (-20–70 °C)
Humidity: 0 to 95 % rH, non condensing
Copyright HK Instruments, Inc. 2017
DIFFERENTIAL PRESSURE SWITCHES
DPI Series
• READ THESE INSTRUCTIONS CAREFULLY BEFORE ATTEMPTING TO
• Failure to observe safety information and comply with instructions can result in
• To avoid electrical shock or damage to equipment, disconnect power before
• To avoid potential fire and/or explosion do not use in potentially flammable or
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered system whose
• LISEZ ATTENTIVEMENT CES INSTRUCTIONS AVANT DE PROCÉDER À
• Le non-respect des informations et instructions de sécurité peut entraîner DES
• Afin d'éviter les chocs électriques et les dommages matériels, déconnectez
• Afin de prévenir les risques d'incendie et/ou d'explosion, n'utilisez pas l'appareil
• Conservez ces instructions à titre de référence.
• Une fois installé, ce produit fera partie d'un système technique dont les
Physical
Case:
Dimensions: 3.5" x 3.4" x 1.46"
(89 x 86.5 x 37.1 mm)
Weight: 5.3 oz (150 g)
Mounting: Case: 2 each 3/16" (4.3 mm) holes
Lid: 2 each 3/16" (4.3 mm) holes
Materials: Case: ABS (UL 94 V-0 Approved)
Lid: PC (UL 94 V-1 Approved)
Protection standard: IP54 / NEMA3
Touch sensitive buttons on the lid:
Menu, Back, OK, down arrow, up arrow
Display:
3 1/2 digit LCD backlit display
2-line display (12 characters/line)
Line 1: Active measurement
Line 2: Units
Size: 1.81" W x 0.57" H
(46.0 W x 14.5 H mm)
Electrical connections:
n/Out:
Terminal block (24 V, GND, 0–10 V)
Wire: 12–24 AWG (0.2–1.5 mm )
2
Relay 1:
Terminal block (NC, COM, NO)
Wire: 12–24 AWG (0.2–1.5 mm )
2
Relay 2:
Terminal block (NC, COM, NO)
Wire: 12–24 AWG (0.2–1.5 mm )
2
Cable entries:
Strain relief: M16 & M20
Knockout ø: 0.625" (16 mm)
Knockout ø: 0.787" (20 mm)
Pressure fittings:
3/16" ø (5.2 mm) barbed brass
+ High pressure
– Low pressure
www.hkinstrumentsinc.com
WARNING
INSTALL, OPERATE OR SERVICE THIS DEVICE.
PERSONAL INJURY, DEATH AND/OR PROPERTY DAMAGE.
installing or servicing and use only wiring with insulation rated for full device
operating voltage.
explosive atmospheres.
specifications and performance characteristics are not designed or controlled
by HK Instruments. Review applications and national and local codes to assure
that the installation will be functional and safe. Use only experienced and
knowledgeable technicians to install this device.
AVERTISSEMENT
L'INSTALLATION, LA MISE EN SERVICE OU L'ENTRETIEN DE CET APPAREIL.
DOMMAGES CORPORELS, LA MORT ET/OU DES DÉGÂTS MATÉRIELS.
l'alimentation électrique avant l'installation ou l'entretien, et utilisez uniquement du
câblage avec isolement assigné pour une tension d'alimentation optimale.
dans des environnements potentiellement inflammables ou explosifs.
spécifications et les caractéristiques de performance ne sont ni conçues ni
contrôlées par HK Instruments. Consultez les applications et les codes nationaux
et locaux pour garantir le fonctionnement correct et sûr de l'installation. Ne faites
appel qu'à des techniciens expérimentés et compétents pour installer cet appareil.
Electrical
Circuit: 3-wire (24 V, GND, 0–10)
Input:
Without
With
Output:
DPI: 0–10 V
Relay 1: 250 VAC / 30 VDC / 6 A
Relay 2: 250 VAC / 30 VDC / 6 A
Resistance minimum: 1 kΩ
Current consumption:
35 mA + relays (7 mA each) + eZ circuit (20 mA)
+0–10 V output (10 mA)
Conformance
Meets requirements for CE marking:
EMC Directive 2014/30/EU
RoHS Directive 2011/65/EU
Meets safety requirements for electrical equipment for
measurement, control, and laboratory use:
ETL marking, standard IEC61010-1.
Product is tested and meets the NRTL product approval
requirements.
4002576
INSTALLATION
INSTRUCTIONS
: 21–35 VDC/ 24 VAC, ±10 %
: 24 VAC or VDC, ±10 %
Conforms to ANSI/UL Std 61010
Certified to CAN/CSA Std C22.2 No 61010
COMPANY WITH
MANAGEMENT SYSTEM
CERTIFIED BY DNV GL
= ISO 9001 = ISO 14001 =
Installation version 2.0 2017
RoHS 2
2011/65/EU