| Overview The type TFS10-40/41 is a family of compact, precise flow switches with analog display in a rugged stainless steel housing. They operate based on the calorimetric principle. The switch allows to set an exact flow set-point and will measure simultaneously the flow rate up to the lowest flow conditions.
•Precise switching flow monitor for water or oil based solutions up to 100 bar •High accuracy also under low flow conditions •Seperate adjustment for “range” and “set-point” •Analog display of actual flow rate and display of adjusted set-point value •LED display for output status •Anti scaling •ISO9001:2015 |
Dimensional drawing
| Connection & pin assignment
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General information
Range of application Flow measurement speed of water (40) Flow measurement speed of oils (41) Parametrisation options
Medium temperature min. Medium temperature max. Adjustment range | Water; oils 0-20 cm/s to 0-300 cm/s, 0-30 cm/s to 0-300 cm/s, cont. adjust Hysteresis Switching logic Damping Seperate adjustment for “range” and “set-point” Analog display of actual flow rate and display of adjustedset-point value Standard unit of measure Colour of process value - 20°C + 80°C approx. 20% - 90% of measuring range setting
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Outputs / inputs
Switching output | 1 x normally closed / normally open |
Electrical data
Operating voltage Voltage type Electrical design Switching current.
Initial operation Flow < set-point - LED, green - Output relay | 18 ... 30 V DC Direct voltage (DC) Relay with potential free contact ≤ 5 A, 120 VAC, ≤ 3 A, 250 VAC) ≤ 5 A, 150 W with VDC approx. 10s after connection of power
off activated |
Mechanical data
Material of sensor probe Material of housing Electrical connection
Pressure resistance Housing dimensions ODxH Process connection | stainless steel AISI 303 or equivalent (other material on request) stainless steel AISI 303 2 m oil flex cable 6 x 0,5 mm2 Contacts gold-plated 100 bar OD 66 X H 109/69 G ½“ BSP alt. ½“ 14 - NPT |
Accuracy
Hysteresis Repeatability Linearity deviation Temperature drift Response time | approx. 10% <2% < 5 % most favourable straight line related to the final value < 3 % per kelvin 2 sec. - 10 sec., according to range setting of water 2 sec. - 15 sec., according to range setting of oils |
Additional information
Ambient temperature min. Ambient temperature max. Protection rating | - 20°C + 70°C IP67 |
Function display
Function display
Accessories included with delivery | LED Red No accessories included |
