Calorimetric Air Flow Meter

Calorimetric Air Flow Meter Overview

This flow meter utilises the calorific measuring principle. Two measuring elements as well as a heat source are located on the measuring tip. The effect of the air flowing through the meter is that heat energy is absorbed and conducted away, resulting in a lower temperature. The resulting temperature change is an indication of flow. This Air Flow Meter is suitable for various severe environments and can therefore be used in slightly corrosive air.

Calorimetric Air Flow Meter – Features

Thermal mass flow
Quick response
Good sensitivity
Turndown ratio 500 ：1
High precision & accurate sensing at the lowest flow rate for metering applications
Output: Analog / RS-485
Use measured with square pipe or 2″ pipe above
IP rating： IP65
Stainless steel casing, suitable for various severe environments
Display Cumulative flow / Instantaneous flow

Description

Calorimetric Air Flow Meter | FTM06C-A

Input

Input type

Pt20/Pt300 (Air velocity) / Pt1000 (Temp.)

Measuring range

0 … 5 m/s ~ 0 … 60 m/s

Min. measuring range

0.1 m/s

Turndown ratio

500 : 1

Installation angle effect

＜3% of the measured value (When the installation angle＜10°)

Output

Output

4 … 20 mA & RS-485

0 … 10 V & RS-485

RS-485 & Impulse (1 … 500 Hz)

Preset output

Out1 : Air velocity

Signal connection

3-wire

Warm-up time

＜60 sec

Response time

t90＜5 sec

Load resistance

Voltage output : ≧100 KΩ

Current output :≦500 Ω

Accuracy

Accuracy

±1.5% F.S. (Option±1%)

Temp. influence

0.1% / °C

Repeatability

0.5%

Electrical

Power supply

DC 24 V±10%

Current consumption

＜0.3 A

Electrical connections

M12 connector

Environmental

Measuring medium

Air

Operating Temp.(With body and display)

0 … +50°C

Operating Humid.(With body and display)

20 … 90%RH (Non-condensing)

Probe operating Temp.

0 … +120°C

(Increasing operating temperature will affect air velocity error)

Storage Temp.

-20 … +60°C

Storage Humid.

0 … 95% (Non-condensing)

Probe pressure

16 bar

Installation

Installation

Metal flange mount

R1/2″ movable thread

Inline T type tube

Flange pipe

Certification

Protection

IP rating

IP65

Electrical protection

■ Reverse polarity

■ Over-voltage

■ Short-circuit

Material

Cover

PC (Display)

SUS 304 (No display)

Body (including probe)

SUS304

Filter

SUS304

Weight

500 g (w / o cable)

Calorimetric Air Flow Meter | FTM06C-A

Calorimetric Air Flow Meter | FTM06C-A

Calorimetric Air Flow Meter | FTM06C-A