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DPT-IO-MOD Differential pressure transmitter with Input terminal and Modbus

DPT-IO-MOD Differential pressure transmitter with Input terminal and Modbus
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DPT-IO-MOD Differential pressure transmitter with Input terminal and Modbus - 1

USER-FRIENDLY MEASURING DEVICES differential pressure transmitters dpt-io-mod series Differential pressure transmitter with Modbus communication and Input terminal The DPT-IO-MOD differential pressure transmitter for air conforms to Modbus over serial line protocol, using RTU transmission mode and RS485 interface. The digital output signal is sent over Modbus enabling the DPT-IO-MOD to connect directly to a field communications network. DPT-IO-MOD requires less wiring than traditional 3-wire transmitters, since multiple devices can be connected on serial line. The DPT-IO-MOD includes an Input terminal that enables reading of multiple other signals such as temperature or control relays over Modbus. The Input terminal has two input channels designed to accept 0-10 V, ntc10k, Pt1000, Ni1000/(-LG), and BIN IN (potential free contact) signals. For example, DPT-IO-MOD can read values from one differential pressure measurement point and two temperature measurement points. Hence, the DPT-IO-MOD does the work of three transmitters. similar products applications • 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 air flow transmitters DPT-IO-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 model summary Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 7.0 2017

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DPT-IO-MOD Differential pressure transmitter with Input terminal 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...

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