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Dmt143l dew point transmitter

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Brief introduction
Vaisala drycap dew point transmitter dmt143l is a micro dew point measuring instrument. The transmitter can be installed directly into a system pressurized to * a high pressure value of 20 bar (290 psia). It's designed for extreme conditions. Dmt143l adopts Vaisala drycap thin film polymer sensor and automatic calibration software. The standard sensor for dry gas and dehumidification dryers is drycap "180m. For more humid applications, such as freeze dryer, drycapb 180s is * the best choice. The sensor has good moisture resistance, so the transmitter can maintain high performance even in the case of occasional process water splash (such as pipe condensation during system failure or start-up). The sensor is to a large extent It is resistant to particulate pollution, oil and gas and most chemicals, and is insensitive to convection velocity. They are easy to integrate and can be used in the handheld Vaisala dm70. Long equipment has replaced dmt242.

Dmt143l dew point transmitter

A detailed introduction to
Vaisala dmt143 and dmt143l dew point transmitters - OEM applications

 




Dmt143 and dmt143l dew point transmitters are ideal when you want to accurately measure dew points in small compressed air dryers, plastic dryers, additive production, and other OEM applications. They are easy to integrate and can be used in the handheld Vaisala dm70. Dmt143l dew point transmitter has replaced dmt242.

Longer calibration intervals for dmt143 and dmt143l dew point transmitters
The calibration interval of dmt143l was 2 years. In addition, the Vaisala drycap "hand held dew point meter dm70 can be used to confirm the performance of the dmt143l without disconnecting it. If further calibration is required, the transmitter can be sent to the Vaisala service department. The automatic calibration software works online while the process is in progress. If the measurement accuracy is not confirmed, it will be calibrated automatically.

Vaisala drycap
Vaisala drycap dew point transmitter dmt143l is a micro dew point measuring instrument. The transmitter can be installed directly into a system pressurized to * a high pressure value of 20 bar (290 psia). It's designed for extreme conditions. Dmt143l adopts Vaisala drycap thin film polymer sensor and automatic calibration software. The standard sensor for dry gas and dehumidification dryers is drycap "180m. For more humid applications, such as freeze dryer, drycapb 180s is * the best choice. The sensor has good moisture resistance, so the transmitter can maintain high performance even in the case of occasional process water splash (such as pipe condensation during system failure or start-up). The sensor is to a large extent It is resistant to particulate pollution, oil and gas and most chemicals, and is insensitive to convection velocity.

Dmt143l dew point transmitter is easy to install
Dmt143l provides a variety of functions for users to choose from, including different output and installation options and alarm LEDs. Due to its small size and light weight, dmt143l can be easily and quickly installed in small space or small pipes. The LED lamp gives an alarm for the ultra-high dew point. The trigger point is preset at the factory. However, the trigger point can be adjusted later using Vaisala drycap handheld dew point meter dm70 or Vaisala insight PC software for Windows'. Insight PC software can also be used for other configuration options.

Features of dmt143 and dmt143l dew point transmitters

  1. Vaisala drycap with automatic calibration ® technology
  2. Fast response time
  3. The dew point measurement range is - 70+ 60 °C (-94 ... +140 °F)
  4. The accuracy is ± 2 ° C (± 3.6 ° f)
  5. Anti condensation
  6. With Vaisala drycap ® Portable dew point meter dm70 compatible
  7. Traceable calibration (including certificate)
  8. The LED alarm is triggered when the dew point level is exceeded
Main advantages of dmt143 and dmt143l dew point transmitters
  • Portable size
  • Micro size dew point probe for small industrial dryer applications.
  • Low maintenance cost
  • Stable measurement ensures long calibration intervals and saves maintenance costs.
  • Easy to use
  • Analog output options

Technical parameters of dmt143 and dmt143l dew point transmitter

Dew point temperature Measurement range (typical)

-60 ... + 60°C (-76 ... +140 °F)

It can correspond to different analog output ranges

 

(when the dew point temperature is below 0 ° C (32 ° f), the transmitter outputs frost point.)

 

DRYCAP ® Accuracy of 180m

±2°C (±3.6°F)

Dew point accuracy and measurement conditions
Response time for gas temperature + 20 ° C, flow rate > 1 L / min and pressure 1 bar 63% [90%]

-60 - > - 20 ° C dew point (- 76 - > - 4 ° FTD)

5 s [10 s]

-20 - > - 60 ° C dew point (- 4 - > - 76 ° FTD)

45 s [10 minutes]

DRYCAP ® Accuracy of 180s

±2°C (±3.6°F)

Dmt143 and dmt143l dew point transmitters work environment
Temperature: 0+ 60 °C (32 ... +140 °F)
High temperature peak: it can be done in a short time
Relative humidity: 0 100 %RH
Pressure: 0 20 bara (0 ... 290 psia)
Sample gas flow: no effect
Output input and output
Analog current output: 4 20mA (three wire)
Digital output: RS 485, non isolated
Support protocol: Vaisala industrial protocol, Modbus RTU protocol
Current output resolution: + / - 0.002 Ma
+Current output accuracy at 20 ° C: +/- 0.05 mA
Current output external load: * greater than 500 ohm
Working voltage with current output: 18 28 VDC
Working voltage with digital output: 12 28 VDC
Typical temperature coefficient: 0.0008 MA / ℃
Power consumption at 24 VDC: * 220 Ma more

Dmt143 and dmt143l dew point transmitters overview

sensor

DRYCAP ® 180M

Selection of freeze dryer

DRYCAP ® 180S

working voltage

18 - 28 VDC

Power consumption at 24 VDC

220 mA

Analog output external load

500 Ω

Probe material (wet part)

Stainless steel (AISI 316L)

Sensor protection

stainless steel Sintering filter (hm47280)

Mechanical connection

G ½” Iso228-1 thread with viscous sealing ring (u-seal)

Material of electronic device shell

stainless steel

Enclosure protection class

IP66

Storage temperature range

-40 ... + 60 °C,(-40 ... +140°F)

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