Description
The QTKD is a turbine flowmeter with integrated temperature measurement for nominal sizes from DN 6 to DN 50. It is particularly suited to oil or water where flow and temperature are to be displayed, monitored and output together.
Turbine principle, measuring range 0.7 … 660 L/min (DN 6 … DN 50), accuracy ≤ ±1.0 % linear, switching and analog accuracy each ≤ ±0.5 % of the range, calibrated with lubricating oil 46# at 25 °C. Outputs: switch PNP or NPN, IO-Link, RS485, analog 4 … 20 mA, 1 … 5 V or 0 … 10 V for flow and temperature, pulse and frequency; switching load < 200 mA. Supply 16 … 30 V DC, connection M12 × 1, 5-pin or 4-pin with RS485. Response time 0.1 … 5.0 s, settable.
Shell of stainless steel 304L or, by order code, in the 'alumina' version, turbine rotor of duplex steel, sliding bearing, display head of engineering plastics. Pressure rating 400 bar in the internal thread version, process connection G 1/2" … 2". Medium temperature -20 … +80 °C, -30 … +180 °C in the split high-temperature version; ambient -20 … +75 °C; protection IP67. A declaration of conformity is not documented in the datasheet. Before sizing, note: the analog output starts at 0 L/min, not at the start of the measuring range. In the RS485 version OUT3 is omitted and the connector is 4-pin.
Advantages at a glance
- Flow and temperature on one colour display
- Accuracy ≤ ±1.0 % linear
- Analog 4 … 20 mA, 1 … 5 V or 0 … 10 V per variable
- IO-Link or RS485
- Pressure rating 400 bar
- All parameters set with three keys
- Two signal lamps for the switching outputs
- High-temperature version up to +180 °C
- Protection IP67