Product features
- measurement of overpressure and differential pressure of dry air or dry, non-corrosive gases
- 11 measuring ranges, between -100 Pa – +5000 Pa
- 4–20 mA two-wire transmitter
- high accuracy, low temperature error
- IP 65 protection
DT712 I4.. Differential pressure transmitter
Product description
The DT712 I4 differential pressure transmitter is used to measure the pressure in air ducts of air conditioning and exhaust systems, to measure the pressure drop of air filters, to measure the overpressure of clean rooms, and to measure the pressure difference of air locks.
The medium to be measured can be dry air or dry, non-corrosive gases.
The devices can be ordered with 11 different measuring ranges, in the pressure range between -100 Pa and +5000 Pa.
The pressure range can also be bipolar (e.g. -50 Pa and +50 Pa). The transmitters can also be delivered with individual
measuring ranges on special order.
The device is a two-wire transmitter, i.e. it obtains the energy required for operation from the 4–20 mA current loop.
The device is characterized by high accuracy, long-term stability and low temperature error, even in the most sensitive
measuring ranges.
The pressure to be measured can be connected to the device via 2 pcs. (P-, P+) 4 mm inner diameter hose-end pipe stubs – suitable for pneumatic pipes.
The electrical connection is made via an M12 cable gland with a push-in direct terminal block.
The housing has IP 65 protection and is available in two versions:
DT712 I4: with a box suitable for direct mounting (here the mounting holes are accessible after removing the box cover), and
DT712 I4 MF: with a box with mounting flange (here the mounting holes are outside the box).
Technical specifications
| Safety data: | ||
|---|---|---|
| Protection class III EN 61140 The input and output connection points are not galvanically isolated from each other. |
||
| Input parameters: | ||
| Measured quantity: | pressure | |
| Measurable medium: | dry air or dry, non-corrosive gases | |
| Measuring ranges: | see table | |
| Measuring ranges [Pa] * *range other than the above can also be ordered. |
||
| 0–100 | 0–500 | -10 – +50 |
| 0–150 | 0–1000 | -50 – +50 |
| 0–250 | 0–2000 | -100 – +100 |
| 0–300 | 0–5000 | |
| Overpressure: | 1500 Pa (pressure < 1000 Pa), 150% (pressure > 100 Pa) |
|
| Output parameters: | ||
| Output signal: | 4–20 mA, DC current | |
| Overcurrent protection: | 22 mA (limiter) | |
| Accuracy (23 °C ±2 °C): | 1.5% (pressure < 160 Pa) 1.25% (pressure between 160–250 Pa) 1% (pressure > 250 Pa) |
|
| Temperature dependence: | 0.3% / 10 °C (between 10–50 °C) | |
| Supply voltage dependence: | negligible | |
| Settling time: | 0.5 s (10–90%) | |
| Power supply: | ||
| Supply voltage: | 12–30 VDC, loop powered | |
| Ambient conditions: | ||
| Operating temperature range: | 0 – +50 °C (-20 – +60 °C, on special request) | |
| Medium temperature range: | 0 – +50 °C (-20 – +60 °C, on special request) | |
| Storage temperature range: | -25 – +70 °C | |
| Relative humidity: | 90% (max., non condensing) | |
| Place of installation: | any place, vibration-free | |
| Mounting position: | vertical surface, pressure connection at the bottom | |
| Electromagnetic compatibility (EMC) | ||
| Interference emission (EN IEC 55011): | Group 1, Class B | |
| Interference immunity (EN IEC 61326-1): | industrial environment | |
| General data: | ||
| Housing: | polycarbonate boksz (light gray) | |
| Medium connection: | 2 pcs (P-, P+) hose end pipe fittings for pneumatic pipe with 4 mm inner diameter |
|
| Electrical connection: | push-in direct terminal block via an M12 cable gland |
|
| Wire cross-section: | 0.25–1 mm2 shilded | |
| Dimensions: | ||
| DT712 I4: | 115 × 65 × 40 mm (width × height × depth) | |
| DT712 I4 MF: | 145 × 65 × 40 mm (width × height × depth) | |
| Weight: | 0.18 kg | |
| Protection: | IP 65 | |
| More technical data in the operating instructions. The manufacturer reserves the right to change some technical data! | ||
Downloads
| Leaflet of product | Operating Instruction |
