USER-FRIENDLY MEASURING DEVICES differential pressure transmitters dpt-mod Multifunctional differential pressure transmitters with air flow measurement and Modbus communication DPT-MOD is a multifunctional transmitter for measuring volume flow, velocity, and static and differential pressure. The measurements can be read and the configuration done via Modbus communication. DPT-MOD requires less wiring than the traditional 3-wire transmitters because multiple devices can be connected on serial line. The DPT-MOD is used for measuring air flow or low pressures of air and non-combustible gases in order to monitor and control building automation, HVAC and cleanroom systems. It can also be used with several different measurement probes such as FloXact™ or pitot tube, and air dampers. DPT-MOD series devices include: • Two selectable functions: o Measure and monitor in-duct volume flow, velocity or differential pressure o Measure and monitor air flow across centrifugal fans • Multiple selectable measurement units: o Volume flow: m3/s, m3/h, cfm, l/s o Velocity: m/s, ft/min o Pressure: Pa, inWC, mmWC, kPa, mbar • Modbus communication protocol DPT-MOD series device options offer: • AZ (autozero) function for automatic zero point calibration, eliminating the need for periodic manual autozeroing to ensure long term accuracy similar products applications • DPT-R8 series 8-range differential pressure transmitters • DPT-MOD series differential pressure transmitters with Modbus configuration • DPT-Flow series air flow transmitters • AVT series air velocity transmitters DPT-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 • air flow monitoring across centrifugal fans and blowers • in-duct air flow or pressure monitoring • measuring air flow or pressure in VAV applications model summary Copyright HK Instruments 2017 www.hkinstruments.fi Datasheet Version 3.0

Performance Accuracy (at 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 (Accuracy specifications include: general accuracy, temperature drift, linearity, hysteresis, long term stability, and repetition error) Thermal effects: Temperature compensated across the full spectrum of capability Overpressure: Proof pressure: 25 kPa Burst pressure: 30 kPa Zero point calibration: Automatic autozero, manual pushbutton or via Modbus register Response time: 1.0-20 s, selectable via...