COMPRESSED AIR - NITROGEN - CHILLER - MEASURE
DEWMAT dewpoint sensor high range
| Manufacturer | Partenair |
| Categories | Measure, Measure the humidity, Hygrometric sensors |
| Document to download | |
| DewMat7807xx |
DEWMAT 780.769 & 780.770
Hygrometric probes for dew point measurement on the respective temperature ranges: -50 ... + 20 ° C & -100º ... + 20ºC.
Its unique dual-sensor technology optimizes the sensitivity of this probe and improves its accuracy by automatically selecting the sensor according to the humidity content of the gas in real time.
The DEWMAT 780.7xx is delivered ready to use and is easily installed in the piping or a dedicated measurement chamber. It has 2 selectable 4-20mA or Modbus RTU (RS485) outputs.
The accuracy of this sensor has been tested and is guaranteed under the following conditions:
• Ambient temperature 23 ° ± 3 ° C
• Gas temperature 23 ° ± 3 ° C
• Ambient humidity <95%, no condensation
• Sampling> 2 l / min at the tip of the sensor
Characteristics
• Wide measuring range dew point sensor
• Available with ATEX, IECEx option
• High accuracy of 2 ° C over the measurement range -100 ° ... + 20 ° C
• Robust industrial case
• 2 outputs available: 4 ... 20 mA, RS-485 (Modbus / RTU).
• IP65 protection
* Select the generic if you don't know which model to choose. The sales department will contact you to determine the appropriate model.
Detailed specifications
DEWMAT 780.769 & 780.770
| Measuring range (Depending on model) |
-100°... +20°C (780.770) | |
| -50°... +20°C (780.769) | ||
| -30°... +70°C | ||
| Humidity sensor | QCM & / ou Polymère | |
| Temperature sensor | NTC | |
| Accuracy | Dew point : ±2°C Temperature : 0,3°C |
|
| Operating pressure (depending on model) |
-0.1... 1.6 MPa (780.770) -0.1... 5.0 MPa (780.769) |
|
| Temp. on duty (gas) |
-30°... +70°C | |
| Gas types | Non-corrosive gases | |
| Response time t90 (@ 4 l/min) |
-80°C -> -20°C : 20 sec -20°C -> -80°C : 180 sec |
|
| Ambient temperature | -20°... +50°C | |
| Ambient humidity | 0...100 % H.R. | |
| Power supply | 12...30 VDC | |
| Consumption | 40 mA @ 24 VDC | |
| Output signals | 4...20 mA (isolated) Modbus RTU |
|
| Electric connection | Screw terminal block | |
| Connection gas | G 1/2“ (ISO 228/1) stainless steel 1.4301 (SUS 304) |
|
| Boitier | Aluminium alloy case | |
| Classification | IP67 | |
| CEM | IEC 61326-1 | |
| Approval | Ex db[ib] IIC T4 Gb | |
| Sensor protection | Sintered filter | |
| Temp. transport | -30°... +70°C | |
| Temp. storage | -20°... +50°C | |
| Weight | 728 g | |
Description
| Order N° | Description |
| DEWMAT 780.770 | HYGROMETRIC PROBE, -100°... +20°C, G 1/2” thread, 1.5 MPa, 1 x 4 ... 20 mA, RS-485 (Modbus) |
| DEWMAT 780.769 | HYGROMETRIC PROBE, -50°... +20°C, G 1/2” thread, 35 MPa, 1 x 4 ... 20 mA, RS-485 (Modbus) |
| MAC 1570 | Option ATEX (for DEWMAT 780.770 or 780.769) |
| MAC 1580 | Option IECEx (for DEWMAT 780.770 or 780.769) |
| MAC 1590 | Option GB3836 (for DEWMAT 780.770 or 780.769) |
Accessories
| MAC 1305 | Measuring chamber with inlet/outlet valves and compression fitting for gas supply |
| MAC 1315 | Measuring chamber with insertion sampling tubes (For applications where sample loss is not acceptable), 1.5 MPa |
| MAC 1270 | Measuring chamber with quick coupling, 1,5 MPa |
| MET 0100 | Sensor recalibration |
