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INTRODUCTION
Thank you for choosing an HK Instruments DPT-Priima-MOD series
transmitter. DPT-Priima-MOD is a multifunctional high accuracy trans-
mitter for measuring volume flow, velocity, and static and differential
pressure. It is designed for cleanrooms and other demanding applica-
tions. The measurements can be read and the configuration done via
Modbus communication. DPT-Priima-MOD can also be used with sev-
eral different measurement probes such as FloXact™ or pitot tube, and
air dampers.
DPT-Priima-MOD models come with a local display and an automatic
zero point calibration. Calibration certificate available as an option.
APPLICATIONS
DPT-Priima-MOD is commonly used in applications requiring high
measurement accuracy:
• monitoring pressure in cleanrooms
• monitoring pressure difference across the building envelope
• monitoring pressure and flow
SPECIFICATIONS
Performance
Measurement ranges:
±120 Pa*, ±240 Pa, ±620 Pa, ±1240 Pa, ±2490 Pa
(selectable via menu or modbus)
*default range
Accuracy (at applied pressure):
0.4 % ±0.4 Pa
(Including: general accuracy, linearity, hysteresis, long
term stability, and repetition error)
Overpressure:
Proof pressure: 10 kPa
Burst pressure: 30 kPa
Zero point calibration:
Automatic autozero, manual pushbutton or via Modbus
register
Response time:
0.4−20 s, selectable via menu or via Modbus register
(63 % of the change)
Communication
Protocol: MODBUS over Serial Line
Transmission Mode: RTU
Interface: RS485
Byte format (11 bits) in RTU mode:
Coding System: 8-bit binary
Bits per Byte:
1 start bit
8 data bits, least significant bit sent
first
1 bit for parity
1 stop bit
Baud rate: selectable in configuration
Modbus address: 1−247 addresses selectable in
configuration menu
Copyright HK Instruments 2022
DIFFERENTIAL PRESSURE TRANSMITTERS
DPT-Priima-MOD Series
• READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE OR SERVICE THIS
DEVICE.
• Failure to observe safety information and comply with
instructions can result in PERSONAL INJURY, DEATH AND/OR
PROPERTY DAMAGE.
• To avoid electrical shock or damage to equipment, disconnect
power before installing or servicing and use only wiring with
insulation rated for full device operating voltage.
• To avoid potential fire and/or explosion do not use in potentially
flammable or explosive atmospheres.
• Retain these instructions for future reference.
• This product, when installed, will be part of an engineered
system whose 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.
Technical Specifications
Media compatibility:
Dry air or non-aggressive gases
Pressure units (select via menu):
Pa, kPa, mbar, inWC, mmWC, psi
Flow units (select via menu):
Volume: m
/s, m
/h, cfm, l/s
3
3
Velocity: m/s, ft/min
Measuring element:
MEMS, no flow-through
Environment:
Operating temperature: -5...50 °C
Temperature compensated range 0...50 °C
Storage temperature: -40...70 °C
Humidity: 0 to 95 % rH, non condensing
Physical
Dimensions:
Case: 102.0 x 71.5 x 36.0 mm
Weight:
150 g
Mounting:
2 each 4.3 mm screw holes, one slotted
Materials:
Case: ABS
Lid: PC
Pressure fittings: Brass
Tubing: Silicone
Protection standard:
IP54
www.hkinstruments.fi
WARNING
Display
2-line display (12 characters/line)
Line 1: Volume or velocity measurement
Line 2: Pressure measurement
Size: 46.0 x 14.5 mm
Electrical connections:
4-screw terminal block
Wire: 0.2–1.5 mm
Cable entry:
Strain relief: M16
Knockout : 16 mm
Pressure fittings
Male ø 5.2 mm
+ High pressure
- Low pressure
Electrical
Supply voltage:
24 VAC or VDC ± 10 %
Power consumption:
< 1 W
< 2.2 W during AZ-calibration
Output signal:
via Modbus
Conformance
Meets requirements for:
EMC:
RoHS:
WEEE:
INSTALLATION
INSTRUCTIONS
(16–24 AWG)
2
CE:
UKCA:
2014/30/EU
S.I. 2016/1091
2011/65/EU
S.I. 2012/3032
2012/19/EU
S.I. 2013/3113
RoHS
COMPLIANT
Installation version 1.0 2022
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Related Manuals for HK Instruments DPT-PRIIMA-MOD Series
Summary of Contents for HK Instruments DPT-PRIIMA-MOD Series
- Page 1 Coding System: 8-bit binary Case: ABS Conformance Bits per Byte: Lid: PC Meets requirements for: Pressure fittings: Brass 1 start bit CE: UKCA: 8 data bits, least significant bit sent Tubing: Silicone EMC: 2014/30/EU S.I. 2016/1091 first Protection standard: RoHS: 2011/65/EU S.I. 2012/3032 1 bit for parity IP54 WEEE: 2012/19/EU S.I. 2013/3113 1 stop bit Baud rate: selectable in configuration Modbus address: 1−247 addresses selectable in configuration menu RoHS COMPLIANT www.hkinstruments.fi Installation version 1.0 2022 Copyright HK Instruments 2022...
- Page 2 2) Open the lid and route the cable through the strain relief and 1) Unscrew the strain relief and route the cable. connect the wires to the terminal block(s) (see step 2). 2) Connect the wires as shown in figure 2. 3) The device is now ready for configuration. 3) Tighten the strain relief. It is recommended to use shielded twisted pair cable for Modbus cabling. WARNING! Apply power only after the device is properly wired. The cable shield must be earthed only in one point, normally, at the end of the main cable. Figure 2 - Wiring diagram STEP 1: MOUNTING THE DEVICE Modbus 1) Select the mounting location (duct, wall, panel). 2) Use the device as a template and mark the screw holes. 24 V 3) Mount with appropriate screws. + Power supply 24 VDC / 24 VAC www.hkinstruments.fi Installation version 1.0 2022 Copyright HK Instruments 2022...
- Page 3 DOWN automatic zeroing circuit built into the PCB board. The autozero cali- 5) Select pressure unit for display: Pa, kPa, mbar, inWC, mmWC, psi or bration electronically adjusts the transmitter zero at predetermined time intervals (every 10 minutes). The function eliminates all output none. signal drift due to thermal, electronic or mechanical effects, as well as SELECT PRESS.UNIT the need for technicians to remove high and low pressure tubes when performing initial or periodic transmitter zero point calibration. The DOWN autozero adjustment takes 4 seconds after which the device returns to its normal measuring mode. During the 4 second adjustment period, 6) Select desired pressure range: the output and display values will freeze to the latest measured value. ±120 Pa, ±240 Pa, ±620 Pa, ±1240 Pa, ±2490 Pa Transmitters equipped with the autozero calibration are virtually main- SELECT PRESS. RANGE tenance free and manual zeroing is not required. ±120 Pa DOWN www.hkinstruments.fi Installation version 1.0 2022 Copyright HK Instruments 2022...
- Page 4 Should the manufacturer alter the *) The value and range are determined by the selected pressure range ±120 Pa, ±240 Pa, ±620 Pa, ±1240 Pa, ±2490 Pa. The values shown in the table when the largest area is selected. structure of the device, the seller is not obligated to make comparable changes to devices already purchased. Appealing for warranty requires Function code 05 - Write single coil that the buyer has correctly fulfilled his/her duties arisen from the de- livery and stated in the contract. The seller will give a new warranty for Parameter description Register Data Type Value Range 0x0001 Zero point calibration On - Off goods that have been replaced or repaired within the warranty, how- Bit 0 0...1 ever only to the expiration of the original product’s warranty time. The warranty includes the repair of a defective part or device, or if needed, a new part or device, but not installation or exchange costs. Under no circumstance is the seller liable for damages compensation for indirect damage. www.hkinstruments.fi Installation version 1.0 2022 Copyright HK Instruments 2022...
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