LSI MW9009 LASTEM sensors for Temperature and Relative Humidity
RELATIVE HUMIDITY AND AIR TEMPERATURE
- 4…20 mA, RS485-Modbus RTU and Radio outputs version
- Easy installation of the sensitive part, even in small spaces or pipes
- Cable length from 5 to 100 m
- Dew Point calculation and output (replace RH % output)
- Simple replacement of the sensitive element
- Outstanding accuracy (1.5%) for RH%
Sensor for measuring the air temperature and relative humidity in indoor environments or inside pipes.
In applications with dirty air, it is possible to mount the sensor inside the DYA225 shelter in order to prevent dirt from accumulating directly on the sensitive element.
Technical Specifications
| PN | EXP815.1 | DMA975.1 | DMA875.1 |
| Measurements | °C/RH% | °C/RH% | °C/RH% |
| Output | Radio | RS485 | 2×0-4…20 mA |
| Frequency | 868 MHz | – | – |
| Radio transmission power | 25 ± 3 mW | – | – |
| Radio transmission distance (line–of–sight) | 600 m | – | – |
| Transmission rate | 10’ | – | – |
| Battery life | >2 years | – | – |
| Protocol | – | Modbus RTU®, TTY-ASCII | – |
| Configuration | – | Hyperterminal | – |
| RS485 protection | – | Galvanic insulation (3 kV, UL1577) | – |
| RS485 speed | – | 1200…115 kbps | – |
| PN | EXP815.1 | DMA975.1 | DMA875.1 |
| Power supply | Battery (AA 3,6 V) | 10…30 Vac/dc | 10…30 Vac/dc |
| Power consumption | <10 µW stand-by 120 mW in trasmissione | 1 W | 1 W |
| Electric protections | NO (electrically insulated system) | Tran orb and Hemofilter | Tran orb and Hemofilter |
Common Technical Specifications
| Temperature | Principle | RTD Pt100 1/3 DIN B (Class AA EN60751) |
| Measuring range | Programmable: -40…60°C, -50…60°C, -50…70°C, -30…100°C | |
| Accuracy | 0.1°C (@0°C) | |
| Resolution | 0.01°C | |
| Response time (T90) | Typical 4 s (1 m/sec air flow) | |
| Long term stability | <0.1°C/year | |
| Relative Humidity | Principle | Capacitive |
| Measuring range | 0…100% | |
| Accuracy | ±1% (@5…95%) | |
| Output | Programmable: RH% or Dew Point | |
| Long term stability | <±1% / year | |
| Response time (T90) | Typical 10 s (1m/s air flow) | |
| Hysteresis | <1% | |
| Resolution | 0.1% | |
| General Information | Protection rate | IP65 |
| Operative temperature | -50…100°C |
Accessories
| SVICA0003 | ISO9001 type calibration certificate (Temperature) | |
| SVACA0006 | ISO17025-ACCREDIA type calibration certificate (Temperature) | |
| SVICA1003 | ISO9001 type calibration certificate (Relartive Humidity) | |
| SVACA1005.1 | ISO17025-ACCREDIA type calibration certificate (Relative Humidity) | |
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DWA505A | Cable L= 5 m |
| DWA510A | Cable L= 10 m | |
| DWA525A | Cable L= 25 m | |
| DWA526A | Cable L= 50 m | |
| DWA527A | Cable L= 100 m | |
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MG2251.R | 7 pin free female connector |
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ML3015 | Sensitive element (spare part) for DMA815.1-875.1. EXP815.1 |
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EXP301 | Radio signal receiver from EXP815.1 radio sensor. Output compatible with data loggers (M/E-Log) Maximum number of receivable sensors: 200 Battery: NiCd 9 V Power supply: 12 Vdc Connection cable to data logger: DWA601 |
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DYA225 | Open well for T+RH% sensors when mounted in ducts in presence of dirty air flow.
Material: Iron |
LSI LASTEM Srl
Via Ex SP. 161 Dosso, 9 20049 Settala (MI) Italy
Tel. +39 02 954141
Fax +39 02 95770594
Email info@lsi-lastem.com www.lsi-lastem.com
Documents / Resources
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LSI MW9009 LASTEM sensors for Temperature and Relative Humidity [pdf] User Guide MW9009 LASTEM sensors for temperature and relative humidity, MW9009, LASTEM sensors for temperature and relative humiditytemperature and relative humidity, relative humidity, MW9009 LASTEM sensors for Temperature and Relative Humidity, MW9009 LASTEM sensors for Temperature and Relative Humidity |
