Turck FCI-D04A4P-AP8X-H1141 Flow Sensor

Name: Turck FCI-D04A4P-AP8X-H1141 Flow Sensor – Datasheet & Quote
Brand: Turck
SKU: FCI-D04A4P-AP8X-H1141

Inline calorimetric flow monitor for small liquid flows

The Turck FCI-D04A4P-AP8X-H1141 is an inline flow sensor with an integrated processor for liquid media. It works on the calorimetric principle: heat generated in a measuring tube is absorbed by the flowing medium, and the heat loss is a measure of flow velocity. Turck describes these wear-free sensors as having a low pressure drop and a fast response to flow changes.

The operating range is 0.01 to 1 litre per minute, which suits lubrication circuits, small cooling loops, dosing lines and sampling lines. The set point is adjusted with a potentiometer and an LED band shows whether the flow is below, at or above the set point.

Technical specifications of the FCI-D04A4P-AP8X-H1141

Parameter	Specification
Manufacturer	Turck
ID	6870640
Mounting	Inline sensor, G1/4 inch process connection
Principle	Calorimetric
Flow operating range	0.01 … 1 l/min
Medium temperature	0 … +80 °C
Ambient temperature	0 … +60 °C
Process pressure	20 bar
Stand-by time	5 … 15 s
Switch-on / switch-off time	0.5 … 1 s / 0.5 … 1 s
Temperature gradient	Up to 400 K/min
Operating voltage	19.2 … 28.8 VDC; current consumption up to 50 mA
Output	PNP, normally open, 0.2 A
Voltage drop at rated current	Up to 1.5 V
Protection	Short-circuit and reverse polarity protected
Housing / sensor material	PBT plastic / stainless steel 1.4571 (AISI 316Ti)
Electrical connection	M12 x 1 connector
Protection class	IP67
Indication	LED chain: red below set point, yellow at set point, 4 green above
Approvals	cULus

Because a calorimetric sensor responds to heat transfer, the reading depends on the thermal properties of the liquid. Set the potentiometer with the real fluid at its normal temperature and flow, rather than relying on a bench setting with water, and recheck the set point if the fluid or its temperature changes. The data sheet lists UL registration E210608 for the cULus approval.

Setting and indication

Adjustment is by potentiometer, so no separate programming tool is needed. The LED chain shows the flow state: the red LED indicates a flow below the set point, the yellow LED indicates the set point has been reached and four green LEDs indicate the set point is exceeded.

After power-up the sensor needs a stand-by time of 5 to 15 seconds before it is ready, and the on and off delays are 0.5 to 1 second. These times matter if the sensor is used as an interlock for a pump or a lubrication unit.

Selecting and installing the sensor

Confirm that the medium is compatible with 316Ti stainless steel and stays within 0 to 80 degrees C, and that the maximum flow does not exceed 1 litre per minute. For higher flows, ask for a larger FCI or FCS variant rather than operating outside the range.

Mount the sensor in a pipeline with the G1/4 connection and observe the maximum tightening torque of 30 Nm for the housing nut. The sensor is a general industrial device with a cULus listing and is not certified for hazardous areas.

Documents and quotation

The attached document is the Turck data sheet for the FCI-D04A4P-AP8X-H1141 (two pages). Instructions for use are published separately by Turck.

For a quotation, send the medium, flow range, process connection and quantity. See Flow Indicators & Switches for related instruments.

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Frequently Asked Questions