Vaisala PDT101 and PDT102 Differential Pressure Transmitters
Low differential-pressure transmitters for room pressure cascades, raised-floor plenums, filters and fans. PDT101: ±60 / ±125 Pa or 0 … 500 Pa, 0.4 % span. PDT102: ±50 Pa at 0.25 % or 0.5 % span for cleanrooms and critical spaces.
Description
Differential pressure shows where the air is going: data hall to corridor, raised-floor plenum to room, across filters and fans. PDT101 covers general HVAC and regulated rooms; PDT102 is the high-accuracy, ultra-thin DIN-rail version for cleanrooms, with optional process valve actuator and test jacks for in-place calibration.
Key features
- PDT101: bidirectional ±60 / ±125 Pa or unidirectional 0 … 500 Pa (inH₂O versions available)
- PDT102: bidirectional ±50 Pa / ±0.25 inH₂O, 0.25 % or 0.5 % span accuracy
- MEMS silicon sensor, response time 250 ms
- 4 … 20 mA or voltage outputs
- Front-accessible zero and span adjustment
- Calibrations traceable to SI units
Models
| PDT101-P4C / P4V | ±60 Pa, 4 … 20 mA / 0 … 5 V |
|---|---|
| PDT101-P4C2 / P4V2 | ±125 Pa, 4 … 20 mA / 0 … 5 V |
| PDT101-P10C / P10V | 0 … 500 Pa, 4 … 20 mA / 0 … 10 V |
| PDT102 | ±50 Pa, 4 … 20 mA or 0 … 5 V, 0.25 % or 0.5 % span |
Riajati supplies Vaisala instruments in Malaysia — send us your measurement points, required outputs and quantities through the Enquiry tab for a quotation.
| PDT101 | |
|---|---|
| Accuracy | 0.4 % of span (bidirectional), 1 % of span (unidirectional) |
| Long-term stability | ≤ ±0.25 % span/year |
| Response time (10 … 90 %) | 250 ms |
| Operating voltage | 12 … 36 V DC (4 … 20 mA); 11.5 … 36 V DC or 24 V AC (0 … 5 V); 14 … 36 V DC or 24 V AC (0 … 10 V) |
| Process connection | 1/4" barbed fittings |
| Mounting / IP | Wall, DIN rail or panel; IP40 |
| Operating temperature | −18 … +70 °C |
| PDT102 | |
| Accuracy | 0.25 % or 0.5 % of span |
| Long-term stability | ≤ ±0.25 % span/year |
| Response time (10 … 90 %) | 250 ms |
| Operating voltage | 12 … 36 V DC |
| Process connection | 1/8" NPT female |
| Mounting / IP | DIN rail (EN 50022 / 50035 / 50045); IP30 |
| Operating temperature | −29 … +70 °C |
| Common | |
| Medium | Clean, dry air; non-conducting, non-corrosive gases |
| Pressure type | Differential, gauge, vacuum and compound |
| Compliance | CE, RCM; EN 61326-1 |
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