Datasheet

RHEASREG

KLSW 3 ⁄ KLSW 4

Series KLSW electronic airflow monitors are used for monitoring ventilators and dampers, for flow-dependent monitoring of humidifiers

and electric heating registers according to DIN 57100, part 420, or for applications in connection with DDC systems. Function: After

applying operating voltage (green LED lighting) and building up the desired flow velocity (red LED lighting) within the starting delay,

the »Alarm« relay is activated and the subsequent device is released. Sometimes detrimental heating ⁄ humidifying without air discharge

is so avoided. In case the necessary airspeed is not reached within the starting delay, the »Alarm« relay drops out. Contacts 12 ⁄ 11

close. When preset flow rate is reached again, the »Alarm« relay is reactivated. Contacts 11 ⁄ 14 close. By pressing the Reset button,

the device is reset to its initial condition.

TECHNICAL DATA

Type KLSW 4 KLSW 3

Item No.

Operating voltage 24V AC ⁄ DC 230 V ⁄ AC

Voltage tolerance ± 10% ± 10%

Overvoltage category II II

Signal indication, voltage green LED green LED

Power consumption max. 2 VA 4 VA

Device ambient temperature –20..+60 °C –20..+60 °C

Signal output flow 1 changeover contact 1 changeover contact

Current ⁄ contact load 250 V AC, 6 A, 1.5 kVA 250 V AC, 6 A, 1.5 kVA

Switching function at flow relay activated relay activated

Signal indication at flow yellow LED yellow LED

Start bridging 60 s (via jumper) 60 s (via jumper)

Start bridging indication yellow LED yellow LED

Media temperature range –10..+80 °C –10..+80 °C

Temperature gradient 15 K ⁄ min 15 K ⁄ min

Switchpoint adjustable via potentiometer adjustable via potentiometer

Measuring range 0.1 - 30 m ⁄ s 0.1 - 30 m ⁄ s

Response time 1...10 s 1...10 s

Measuring sensor built-in built-in

Immersion depth 130 mm 130 mm

Process connection PG7, mounting flange PG7, mounting flange

Sensor material MS 58, nickel -plated MS 58, nickel -plated

Pressure resistance 10 bar 10 bar

Connection 5 terminals, 2.5 mm

5 terminals, 2.5 mm

Protection type, enclosure IP 65 IP 65

Protection type, sensor IP 67 IP 67

Contamination class 2 2

Enclosure dimensions 108 x 70 x 73.5 mm (Thor II) 108 x 70 x 73.5 mm (Thor II)

Test mark 0 0

Accessories (included) mounting flange 10 mm mounting flange 10 mm

Start bridging

Jumper plugged = start bridging active for ca. 60 s, yellow LED »Time« lighting

Jumper not plugged = start bridging inactive