Flowma TGF94/95 Remote Thermal Mass Flowmeter

Description

TGF94/95 Hot wire thermal air velocity transmitter working at a constant Temperature.
using King’s law heat balance equation for:

Can be calculated from the formula characteristic curve of constant Temperature. hot wire anemometer, special three PT probe and full metal housing design, high accuracy, suitable for a variety of pipe diameters, widely used in industrial fields.

Feature

IP67 Rugged aluminum alloy case, fit in variety harsh environment
Easy to install, high accuracy, long-term stability
Switchable physical quantities : m/s, ft/s, Nm3/h, Nm/s, L/min, m 3/min (Air velocity & volume)
LCD Display of air velocity and temperature
LCD Display of cumulative flow : m 3, L (Option)

Application

Exhaust gas removal
Dust environment
Slightly corrosive environment
Burner feeder
Biotechnology industry
Factory building air intake
Exhaust calculation

Specification

Input

Input type	Pt20 / Pt300 (Air velocity) / Pt1000 (Temp.)
Measuring range	0 … 120 Nm/s
	N : Working condition (Definition : 20°C at 1013 hPa)
	Units can be converted Nm/s (Flow rate) or
	Nm3 /h(Flow)(Option)(Cumulative flow)(Option)
Minimum initial value	0.15 Nm/s

Output

Installation angle effect	＜3% of the measured value
(When the installation angle＜10°)
Signal	4 … 20 mA / 0 … 10 V / RS-485 / Impulse
Preset output	Out1 : Air velocity；Out2 : Impulse
Impulse range (1 … 500 Hz)	(1)1 … 500 Hz : 4 … 20 mA
	(2)1 … 500 Hz : 0 … 10 V
Signal connection	3-wire
Warm-up time	＜60 sec
Reaction time	t90＜5 sec
Display type	LCD Module with back light, double-row
	(Up air velocity, down temperature(Default: 0 … 120°C))
Load resistance	Current output : ≦500 Ω
	Voltage output : ≧100 KΩ

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
Overvoltage protection	DC : ＜40 V
Electrical connections	M12 connector / M16 metal cable gland

Enviromental

Measuring medium	Air
Operating Temp.	-20 … +60°C
Operating Humid.	0 … 95%RH (Non-condensing)
Probe operating Temp.	0 … 120°C / Option:200°C (Increasing operating temperature will affect air velocity error)
Storage Temp.	-20 … +60°C
Storage Humid.	0 … 95%RH(Non-condensing)
Probe pressure	16 bar

Installation

Fixed seat	1/2′′PT movable thread
Installation	Duct type
	Remote type

Protection

IP rating	IP67(Probe)；IP65(Housing)
Electrical protection	■ Reverse polarity
	■ Over-voltage
	■ Short-circuit

Material

Housing	Aluminum alloy
Probe	SUS304
Weight	FTM94 : 720 g
	FTM95 : 832

Flowma TGF94/95 Remote Thermal Mass Flowmeter

Description

Feature

Application