DPT-Dual-MOD Differential pressure transmitter with two pressure sensors and Modbus

Product catalog summary

Model Summary
The DPT-Dual-MOD series includes models DPT-Dual-MOD-2500, DPT-Dual-MOD-7000, and DPT-Dual-MOD-AHU, each with specific measurement ranges and product codes. These devices are differential pressure transmitters with two pressure sensors, Modbus configuration, and display capabilities.

Product Description
The DPT-Dual-MOD series combines two differential pressure transmitters into one device, allowing pressure measurement from two different points. It features a Modbus interface and an input terminal for external signal conversion. The AHU model includes an air flow transmitter, designed for ventilation units.

Applications
These devices are used in HVAC/R systems for fan, blower, and filter monitoring, pressure and flow monitoring, valve and damper control, and cleanroom pressure monitoring. The AHU model is also suitable for air flow monitoring across centrifugal fans and blowers, in-duct air flow monitoring, and VAV applications.

Specifications
Performance: Accuracy varies by model, with selectable response times and overpressure limits. Communication is via MODBUS over Serial Line with RTU transmission mode.
Technical Specifications: Compatible with dry air or non-aggressive gases, the devices offer selectable measuring units and operate within specified temperature and humidity ranges. Physical dimensions and materials are detailed, with IP54 protection standard.
Electrical: Requires 24 VAC or VDC supply voltage, with power consumption under 1.3 W. Output is via Modbus.
Conformance: Meets CE marking requirements, including EMC, RoHS, and WEEE directives.

Similar Products
Includes DPT-2W series, DPT-R8 series, DPI series, PS series, and DPT-FLOW series, each offering different configurations and functionalities.

Catalog excerpts

DPT-Dual-MOD Differential pressure transmitter with two pressure sensors and Modbus-1

USER-FRIENDLY MEASURING DEVICES differential pressure transmitters dpt-dual-mod series Differential pressure transmitter with two pressure sensors for air and an Input terminal for two analog inputs for external signal conversion into Modbus DPT-Dual-MOD combines two differential pressure transmitters into one device. It offers a possibility to measure pressure from two different points. It has a Modbus interface and an Input terminal. When using the Input terminal, temperature transmitters can be replaced with temperature sensors. As a result you will save in costs of the devices and in the installation costs. The AHU model that includes an air flow transmitter has been designed especially for ventilation units. similar products applications DPT-Dual-MOD series devices are commonly used in HVAC/R systems for: • fan, blower and filter monitoring • pressure and flow monitoring • valve and damper control • pressure monitoring in cleanrooms • DPT-2W series differential pressure transmitters with 4-20 mA 2-wire configuration • DPT-R8 series 8-range differential pressure transmitters • DPI series electronic differential pressure switches • PS series mechanical differential pressure switches • DPT-FLOW series airflow transmitters DPT-Dual-MOD-AHU can also be used for: • air flow monitoring across centrifugal fans and blowers • in-duct air flow monitoring • VAV applications Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 6.0 2017

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DPT-Dual-MOD Differential pressure transmitter with two pressure sensors and Modbus-2

Performance Accuracy (from applied pressure): Model 2500: Pressure < 125 Pa = 1 % + ±2 Pa Pressure > 125 Pa = 1 % + ±1 Pa Model 7000: Pressure < 125 Pa = 1.5 % + ±2 Pa Pressure > 125 Pa = 1.5 % + ±1 Pa (Including: general accuracy, temperature drift, linearity, hysteresis, long term stability and repetition error) Response time: 1...20 s selectable via menu Overpressure: Proof pressure: 25 kPa Burst pressure: 30 kPa 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...

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