Dew point meter Vaisala dew point transmitter

【DMT152Dew point meter Vaisala dew point transmitter】Basic description

DMT152
Using Vaisala DRYCAP ® The DMT152 dew point transmitter of the sensor is designed specifically for OEM manufacturers' low dew point measurement applications, with a measurement range as low as -80 ° C. Its long-term stability and reliability are derived from DRYCAP ® Polymer sensor technology.

Low maintenance volume
The mechanical components of DMT152 are specifically designed for harsh environments, with dust, dirt, and splash resistance. DMT152 uses DRYCAP ® The long-term stability and anti condensation durability of technology result in low maintenance requirements.

【DMT152Dew point meter Vaisala dew point transmitter】Product Features

Compact structure
Accurate measurement
Vaisala DRYCAP ® Polymer Sensor Technology
Dew point measurement range up to -80 ° C (-112 ° F)
Long calibration cycle and low maintenance cost
Quick response
Anti condensation
Traceable to NIST
Application areas: Compressed air, plastic drying
Drying room, purified gas, high-voltage circuit breaker

DMT152 parameter specifications

Measurement parameters
dew point temperature
Measurement range -80 Dew point at -10 ° C (-112...+14 ° F)
Accuracy ± 2 ° C (3.6 ° F) dew point
Non calibrated measurement range -100 Dew point at+20 ° C (-148...+68 ° F)
Analog output range
Options 1-80 Dew point at+20 ° C (-112...+68 ° F)
Option 2-100 Dew point at 0 ° C (-148...+32 ° F)
Option 3: User Output Range
When the dew point is below 0 ° C (32 ° F), the transmitter outputs the frost point temperature.
Accuracy within the temperature range

Response time 63% [90%] at a gas temperature of+20 ° C (+68 ° F) and a pressure of 1 bar
-10 . .. -80 ° CTd 0.5 points [7.5 points]
-80 . .. -10 °CTd 2 s
PPM volume concentration
Measurement range (typical) 0 .. 500 ppm
+20 °C +68 °F）、
Accuracy at 1013 millibars
± (0.2 ppm+20% reading)

working environment
Temperature -40 .. +70 °C （-40 ... +158 °F）
Relative humidity 0 100% RH (up to+20 ° C/68 ° F)
Pressure 0 .. 50 bar （725 psia）
Measurement of non corrosive gases
Sample gas flow rate does not affect measurement accuracy

output
Two analog outputs (expandable) 4 .. 20 mA,0 ... 20 mA
(3-core) 0 .. 5 V,0 ... 10 V
Analog measurement accuracy ± 0.01V/± 0.01 mA
Digital output RS485 (2-wire)
Analog signal alarm level indication user selectable
Clear function information 5 V, 10 V, 20 mA or LED

Review
Sensor Vaisala DRYCAP ® 180U thin film battery
Capacitive sensor
Suggested calibration cycle of 2 years
working voltage
RS485 output 11 * .. 28 VDC
Voltage output is 15 * .. 28 VDC
Current output 21 * .. 28 VDC
*If the extended temperature drops to -40 ° C (-40 ° F) or the pressure rises to 50 bar (725 psi),
The power supply voltage is 21 .. 28 VDC。
power supply current
20 mA+load current during routine measurement
Maximum 220 mA pulse during self diagnosis
The maximum fluctuation of the power supply voltage is 0.3 V
External load
Voltage output is minimized by 10 kOhm
The maximum current output is 500 Ohm
Shell material (wet part) AISI316L
Stainless steel mesh filter AISI303, filtration grade 18 μ m
Mechanical joint ISO G Half, "NPT Half, UNFPA 3/4" -16 "
Enclosure protection level IP65 (NEMA 4)
Storage temperature range -40 .. +80 °C（-40 ... +176 °F）
Weight (ISO G 189 ") 190g (6.70 ounces)
Compliant with the electromagnetic compatibility standard EN61326-1 for measuring, controlling, and laboratory electrical equipment, electrical
Requirements for magnetic compatibility (EMC) in industrial environments.

accessories
MI70 handheld watch connection cable 219980
Computer connected to USB cable 219690
Sampling unit (for ISO G 189 ")
Basic Sampling Room DMT242SC
Sampling chamber DMT242SC2 with Swagelok 1/4 "male connector
Sampling chamber DSC74 with quick connector and leakage screw
Dual pressure sampling chamber DSC74B
NW40 flange 225220SP

DMT152 Dew Point Transmitter Scope of Application

DMT152 is particularly suitable for industrial applications that require control of extremely low humidity, with typical application areas including air and plastic dryers, drying chambers, purified gases, and high-voltage circuit breakers. DMT152 is also particularly suitable for accurate and reliable measurements in challenging dry air environments with high temperatures and low humidity, such as the plastic drying industry.