LSI MW9009 LASTEM sensors for Temperature and Relative Humidity User Guide

June 3, 2024
LSI

LSI MW9009-LASTEM-sensors-for-Temperature-and-Relative-Humidity-
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LSI MW9009 LASTEM sensors for Temperature and Relative Humidity

LSI MW9009-LASTEM-sensors-for-Temperature-and-Relative-Humidity-product-
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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)
**| 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
**
| MG2251.R| 7 pin free female connector
**| ML3015| Sensitive element (spare part) for DMA815.1-875.1. EXP815.1
**
| 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
**| DYA225**| Open well for T+RH% sensors when mounted in ducts in presence of dirty air flow.

Material: Iron
Dimensions: L= 200 mm Ø 92 mm Support plate: 120×120 mm

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

References

Read User Manual Online (PDF format)

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