Vaisala DPT146 Dew Point and Pressure Transmitter

Features

  • The first transmitter that monitors both dew point and process pressure
  • Proven sensor technology
  • Compatible with Vaisala Handheld Meter DM70 for easy spotchecking, local display, and data logging
  • Highly accurate humidity information thanks to dew point data coupled with live pressure input
  • A simple and convenient transmitter for monitoring of compressed air
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Dpstar is a leading supplier of environmental measurement sensors for temperature, relative humidity, pressure, dew point, CO2, and other environmental condition monitoring for industrial process application and research. Since the ’90s, we earned a reputation as a trusted partner to our clients through our commitment and dedication. We are an authorized distributor and supplier of measuring sensors solutions from renowned manufacturers Vaisala. Vaisala is a global leader in environmental and industrial measurement. Building on 80 years of experience, Vaisala provides observations for a better world. Vaisala is a reliable partner for customers around the world, offering a comprehensive range of innovative observation and measurement products and services.

Vaisala DPT146 Dew Point and Pressure Transmitter  for compressed air makes monitoring compressed air simple and convenient. The DPT146 measures both dew point and process pressure simultaneously, and is the ideal choice for anyone using or monitoring compressed air.

Dimension

Key Benefits

Accurate & Stable
More than 20 years of sensor technology development for DRYCAP and BAROCAP sensor.

Simple & Efficient Installation
One transmitter providing two measurements means reduced installation costs and a much easier setup.

2 Measurements in 1
When dew point data is coupled with live pressure input, conversions to atmospheric pressure or ppm are available online, leaving no ambiguity in the information.

Specification

Parameters
Measured Parameters
Dew point −70 … +30 °C (−94 … +86 °F)
Pressure, absolute 1 … 12 bar (14.5 … 174 psi)
Temperature (available if output RS-485 only selected) −40 … +80 °C (−40 … +176 °F)
Calculated Parameters
ppm moisture, by volume 1 … 40 000 ppm
Dew point, converted to atmospheric pressure −75 … +30 °C (−103 … +86 °F)
Measurement Performance
Sensor Vaisala MPS1 multiparameter sensor
Dew point accuracy ±2 °C (±3.6 °F)
Pressure accuracy at 23 °C (73.4 °F) ±0.4 %FS
Pressure temperature dependence ±0.01 bar / 10 °C (18 °F)
ppm accuracy (7 bar) ±(14 ppm + 12 % of reading)
Temperature Accuracy
0 … 40 °C (+32 … +104 °F) ±0.5 °C (±0.9 °F)
−40 … 80 °C (−40 … +176 °F) ±1 °C (±1.8 °F)
Sensor Response Time
Pressure response time < 1 s
Dew point response time 63 % [90 %] at 20 °C and 1 bar:
−50 → −10 °C Tdf 5 s [10 s]
−10 → −50 °C Tdf 10 s [2.5 min]
Operating Environment
Operating temperature of electronics −40 … +60 °C (−40 … +140 °F)
Operating pressure 1 … 12 bar (14.5 … 174 psi)
Mechanical durability 0 … 50 bar (0 … 725 psi)
Relative humidity 0 … 100 %
Measured gases Air/non-corrosive gases
Sample flow rate No effect on measurement accuracy
Storage Temperature
Transmitter only −40 … +80 °C (−40 … +176 °F)
Shipment package −20 … +80 °C (−4 … +176 °F)
Inputs and Outputs
Accuracy of analog outputs ±0.01 V / ±0.01 mA
Digital output RS-485, non-isolated, Vaisala protocol, Modbus RTU protocol
Connector M8 4-pin male
Operating Voltage
Current output 21 … 28 VDC
Voltage output and/or use in cold temperatures (−40 … −20 °C (−40 … −4 °F)) 20 … 28 VDC
RS-485 only 15 … 28 VDC
Analog Outputs (2 Channels)
Current output 0 … 20 mA, 4 … 20 mA
Voltage output 0 … 5 V, 0 … 10 V
Supply Current
During normal measurement 20 mA + load current
During self-diagnostics 300 mA + load current
External Load For
Current output Max. 500 Ω
Voltage output Min. 10 kΩ
Mechanical Specifications
Housing material AISI316L
Mechanical connection ISO G1/2″, NPT 1/2″, UNF 3/4″-16
Recommended calibration interval 2 years
Sensor protection Mesh filter AISI303, grade 18 µm
Weight (ISO1/2″) 190 g (6.70 oz)
Spare Parts and Accessories
Connection cable for MI70 indicator / DM70 meter 219980
USB connection cable 219690
Sampling cells DMT242SC, DMT242SC2, DSC74, DSC74B, DSC74C
Flange DM240FA
Loop-powered external display 226476
ISO 1/2″ plug 218773
NPT 1/2″ plug 222507
Compliance
IP rating IP66
EMC compliance EN 61326-1, Basic electromagnetic environment

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