The DPT321 and the DPT321Z specifications are equal except on measurement range.
The DPT321Z's measuring range = -125/250/500-0-125/250/500 Pa
The DPT321's measuring range = 0-125/250/500 Pa
This differential pressure transmitter applies a high-accuracy MEMS sensor and digital technology.
It can measure positive, negative, or differential pressure and is suitable for a wall mount.
The Differential Pressure Transmitter measures system pressure of fans, blowers, filters, furnace drafts, and orifice plates.
Measuring Range: -125/250/500-0-125/250/500 Pa
Medium: non-combustible, non-corrosive air, insensitive to moisture, dust, condensation, and oil.
Working Temp: -20~70°C
Temp. Compensation: 0~50°C
Working Pressure: overload 10xFS, burst 15xFS
Accuracy: ±1.0%FS(±2.0%FS@25Pa range)
Long term stability: ±0.5%FS/Year
Thermal effect: <0.05%FS/°C (zero), <0.08%FS/°C (FS)
Response Time: 0.5~30s, can be set by keys
Process Connection: 5mm ID tubing
Display: 5 digits LCD, display area 44x18mm, with unit indication, field upgradable
Output: 0~10V, 4~20mA (2 wires), 0~5V, RS485 selectable
Output Load: ≤500Ω (current), ≥2kΩ (voltage)
Power: Voltage: 16~28VAC/ 16~35VDC
Current: 18.5~35VDC (RL=500Ω); 8.5~35VDC (RL=0Ω)
Units: 5 units, selected by keys
Zero set: easy to reset by an external key
Materials: ABS (housing) & PC (cover)