F138x QCM Dewpoint & Pressure Multi-Parameter Transmitter

Measuring Range

Output

Dewpoint

F138B

F138C

Temperature

Pressure

-110 … 0 °Ctd

-120 … 0 °Ctd

-40 … +100 °C

0 … 1.7 MPa(a)

Analog Output (Customized)

Analog Resolution

Analog Drift

Digital Output

Relay Output

Connector

4 … 20 mA (3-wire)

0.002 mA

0.01% of span/°C

Max. 500 ohm

Modbus RTU (RS485)

5pin M12, Female

Accuracy

Operating Environment

Dewpoint (Air or Nitrogen)

-20 … -80 °Ctd

-80 … -110 °Ctd

Temperature (Customized)

0 … + 50 °C

-40 … 0 °C & +50 … +100 °C

Pressure Accuracy @23°C

Pressure Drift With Temperature

±2 °Ctd

±3 °Ctd

±0.3 °C (Standard)

±0.5 °C (Standard)

± 0.3 %FS

± 0.01 bar/10 °C

Environment Temperature

Storage Temperature

Relative Humidity

Sample Gas Flow Rate

Pressure

-20 … +70 °C

-30 … +80 °C

0 … 95 %RH

> 1 L/min

0 … 1.7 MPa(a)

Response Time

Other

Dewpoint: 63% [90%], Reference: 20 °C, 1bar(a), 4L/min

Process Connection

Protection Code

Housing Material

Sensor Filter

EMC

ISO G1/2" thread (Standard)

3/4" - 16 UNF thread (Customized)

5/8" - 18 UNF thread (Customized)

IP65

SUS304

Stainless steel mesh filter

(Filtration class 70 um)

Compliant with IEC 61326-1

-50 → +20 °Ctd

+20 → -50 °Ctd

Pressure

20 sec [40 sec]

1 min [3 min]

< 1 sec

Power

Measuring State

10 … 30 VDC   Max 1.5W   @ 24VDC