S S REGELTECHNIK KLSW-W230 Air Flow Monitor Instruction Manual

: June 9, 2024
: S S REGELTECHNIK

Table of Contents

TECHNICAL DATA
START-UP OVERRIDE
Schematic diagram
Connecting diagram
Installation
Installation and Commissioning
General notes
DIMENSIONS
References
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S S REGELTECHNIK KLSW-W230 Air Flow Monitor Instruction Manual

Electronic duct air flow sensor RHEASGARD® KLGF with active output, housing made of impact-resistant plastic with quick-locking screws, with cable gland, with/without display, to determine the flow velocity (0.1…20 m/s). The measuring transducer converts the measurement signal into a standard signal of 0 – 10 V.

Electronic duct air flow sensor/monitor RHEASGARD® KLGFT (without display) and KLGFVT (with display) with active and switching output, housing made of impact-resistant plastic with quick-locking screws, with cable gland, to determine the flow velocity (0.1…20 m/s) and temperature (0…+50 °C). For device type KLGFVT , the calculated volume flow parameter can be retrieved as an alternative to the flow (configurable on the display). The measuring transducer automatically detects the required output type and converts the measurands into the required standard signal of 0 – 10 V or 4…20 mA (Automatic Output Switching).

Electronic duct airflow monitor RHEASREG® KLSW with switching output, housing made of impact-resistant plastic with quick-locking screws, with cable gland, with/without display, to determine the flow velocity (0.1…20 m/s).

The flow sensors are suitable for monitoring or controlling airflows in ducts, at fans and dampers, for flow-dependent monitoring of humidifiers and electric heating registers according to DIN 57100, Sect. 420, or for use in connection with DDC systems.

TECHNICAL DATA

Power supply| 24 V AC ⁄ DC (± 10 %) (KLSW-W24, KLGF xx) 230 V AC, 50 Hz (KLSW-W230)
---|---
Current consumption| approx. 3 VA (KLGF, KLSW-W24, KLSW-W230) approx. 4 VA (KLGFT, KLGFVT)
Outputs:| KLGF 1x 0 -10 V (U variant) KLGF(V)T 2x 0 -10 V ⁄ 4…20 mA (via Automatic Output Switching – the unit recognises the required output type and automatically switches to U or I output); changeover contact 24 V (max. 5 A, cos ϕ = 1.0), switching hysteresis 2 % final value, threshold can be adjusted via potentiometer KLSW-W24 changeover contact 24 V (max. 5 A, cos ϕ = 1.0), switching hysteresis 2 % final value, threshold can be adjusted via potentiometer KLSW-W230 changeover contact 230 V AC (max. 5 A, cos ϕ = 1.0), switching hysteresis 2 % final value, threshold can be adjusted via potentiometer
AIR FLOW
Sensor:| alorimetric, temperature compensated, sensor breakage protection, with manual zero-point calibration (via button)
Measuring range| 0.1…20 m/s
Accuracy:| 0.5 m/s + 3 % measured value
Long-term stability:| ± 0.5 % final value per year
Reproducibility:| ± 1.0 % final value
Warm-up time:| < 2 min
Response time:| < 60 s
Start-up override:| 0 / 60 s (KLGF/KLSW without display), can be activated via DIP switch 0…120 s (KLGF/KLSW with display, KLGFT/KLGFVT), can be adjusted via potentiometer
TEMPERATURE| KLGF(V)T
Sensor:| NTC 10k
Measuring range:| 0…+50 °C
Accuracy| typical ± 0.5 K at +25 °C
Protective tube| PLEUROFORMTM, material polyamide (PA6), with torsion protection, Ø 20mm, NL = 220 mm, vmax = 30 m/s (air), stainless steel V2A (1.4301), Ø 16 mm available upon request as an option
Housing:| plastic, UV-resistant, polyamide material, 30 % glass-globe reinforced, with quick-locking screws (slotted ⁄ Phillips head combination), colour traffic white (similar to RAL 9016), housing cover for display is transparent!
Housing dimensions| 126 x 90 x 50 mm (Tyr 2)
Cable connection:| cable gland , plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm)
Electrical connection:| 0.2 – 1.5 mm2, via push-in terminal
Process connection| by means of plastic mounting flange (included in the scope of delivery)
Ambient temperature:| storage –20…+50 °C; operation 0…+50 °C
Medium temperature:| 0…+70 °C
Permitted humidity:| < 98 % RH, non-precipitating air free of harmful substances
Protection class| II (according to EN 60 730) with UB = 230 V (KLSW-W230) III (according to EN 60 730) with UB = 24 V (KLSW-W24, KLGF xx)
Protection type:| IP 65 (according to EN 60 529) housing; IP 20 sensor technology
Standards:| CE conformity according to EMC Directive 2014 ⁄ 30 ⁄ EU, according to EN 61326-1, according to EN 61326-2-3
Optional| display with illumination, three-line, cutout approx. 70 x 40 mm (W x H), to display the flow velocity, volume flow and temperature

START-UP OVERRIDE

There are application scenarios in which fan motors and measuring instruments are switched off and on again. When switched on, the fans take a few seconds to build up a flow.

During this start-up time, the GLT could switch to fault mode (lack of flow)

In the KLGFxx / KLSWxx (without display), the start-up override (60 s) is activated by a DIP switch.

In the KLGFxx LCD / KLSWxx LCD (with display) and in the KLGFT / KLGFVT LCD, the start-up override (0…120 s) is activated and adjusted by a potentiometer.

After the supply voltage is switched on, a flow of 20 m/s or greater than the set switching threshold during this start-up time is assumed and the output signal is increased to 10 V or the relay is switched, depending on the type.

After the start-up time has elapsed, the unit switches to normal measuring mode,
in unit types without a changeover contact, a voltage proportional to the measured value is output, in unit types with a changeover contact, the relay switches according to the measured value < switching threshold or measured value > switching threshold.

SWITCHPOINT

In unit types with a changeover contact, the switching point (0.1…20 m/s) is adjusted by a potentiometer.

OTHER PARAMETERS

In the KLGFT / KLGFVT LCD, the temperature is captured by another sensor (NTC 10k). In the KLGFVT LCD, the alternative parameter Volume Flow is calculated internally.

This value can be shown instead of the flow in the display. The switching is menu controlled on the display.

Type/ WG02| Power supply| Power supply| Output active| sw| Output itching| Other parameter| Display| Item no.
---|---|---|---|---|---|---|---|---
K LG F| U V ariant
KLGF-U| 24 V AC ⁄ DC| 1x 0 -10 V| – –| 1701-4111-0101-000
KLGF-U LC D| 24 V AC ⁄ DC| 1x 0 -10 V| – – ■| 1701-4111-1101-000
Optional: Cable connection with M12 connector as per DIN EN 61076-2-101 on request
K LG F ( V ) T| A O S
KLGFT-W| 24 V AC ⁄ DC| 2x 0 -10 V ⁄ 4…20 mA| 1 changeover contact| T| | 1701-4118-0201-001
KLGFVT-W LCD| 24 V AC ⁄ DC| 2x 0 -10 V ⁄ 4…20 mA| 1 changeover contact| T | V| ■| 1701-4118-1401-001
K LS W -W 24| | | | | |
KLSW-W24| 24 V AC ⁄ DC| –| 1 changeover contact| –| | 1701-4113-0101-001
KLSW-W24 LC D| 24 V AC ⁄ DC| –| 1 changeover contact| –| ■| 1701-4113-1101-001
K LS W -W 230| | | | | |
KLSW-W 230| 230 V **** AC| –| 1 changeover contact| –| | 1701-4133-0101-001

Note:
Changeover contact with automatic reset
(relay opens automatically when value falls below the threshold again)

AOS (Automatic Output Switching) = patented analogue interface (patent no. DE 10 2015 015 941 B4),
the unit automatically detects the required output type 0 – 10 V or 4…20 mA
T = temperature (0…+50 °C) – additional measurand
V = volume flow (0…200,000 m³/h) – alternative parameter, can be configured via display!

Schematic diagram

Schematic Diagram

Connecting diagram

Schematic diagram

Connecting diagram

SET potentiometer
setting switching point (min. 0.1m/s … max. 20m/s)

LEDs (on = active)
rel. = relay / switching point exceeded
pow. = device in operation
s.b. = start bridging
Pushbutton
zero point setting (0m/s)
DIP
start bridging (60s) (off = default)

Schematic diagram

Connecting diagram

KLGFVT-W LCD:
Switching from flow measurand to the alternative volume flow parameter is menu-controlled on the display.

SET potentiometer
thershold = switching point (min. 0.1m/s … max. 20m/s)
sb = start bridging (min. 0s … max. 120s)
offset = temperature (± 5K)
LEDs (on = aktiv)
rel. = relay / switching point exceeded
sb = start bridging
Pushbutton
zero point setting (0m/s

Installation

Mounting diagram

Installation and Commissioning

Notes for mounting

Mounting shall take place while observing all relevant regulations and standards applicable for the place of measurement (e.g. such as welding instructions, etc.). It is particularly important to comply with the following:

nstructions, etc.). It is particularly important to comply with the following:
VDE ⁄ VDI directive technical temperature measurements, measurement set-up for temperature measurements
The EMC directives must be adhered to
It is imperative to avoid parallel laying of current-carrying lines
We recommend using shielded cables with the shielding being attached at one side to the DDC ⁄ PLC
the cable length between sensor and GLT should not exceed 100 m
reversing the polarity of the connections can cause damage to the unit and/or other units on the wiring harness.

Before mounting, make sure that the existing technical parameters of the measuring instrument comply with the actual conditions at the place of utilisation, particularly with regard to:

Measuring range
Permissible maximum pressure, flow velocity
Protection type and protection class
Mounting length, tube dimensions
Oscillations, vibrations, shocks are to be avoided (< 0.5 g)
Only suitable for non-precipitating, pollutant-free air without positive or negative pressure!
Contamination must be removed with air only!
Observe a minimum inlet distance of 5x d in upstream and an outlet distance of 3x d!
Mounting length depends on direction, Observe marking!

Attention!
In all cases, please observe the mechanical and thermal load limits of protective tubes according to DIN 43763 respectively according to specific S+S standards!

SUPPLY VOLTAGE :
For operating voltage reverse polarity protection, a one-way rectifier or reverse polarity protection diode is integrated in this device variant. This internal one-way rectifier on AC supply voltage. The output signal is to be tapped by a measuring instrument. The output signal is measured her against zero potential (O V) of the input voltage! When this device is operated on DC supply voltage, the operating voltage input UB+ is to be used for 15…36 V DC supply and UB – or GND for ground wire!

When several devices are supplied by one 24 V AC voltage supply, it is to be ensured that all ”positive“ operating voltage input terminals (+) of the field devices are connected with each other and all ”negative“ operating voltage input terminals (–) (= reference potential) are connected together (in-phase connection of field devices). All outputs of field devices must be referenced to the same potential!

In case of reversed polarity at one field device, a supply voltage shortcircuit would be caused by that device. The consequential short-circuit current flowing through this field device may cause damage to it.

Therefore, pay attention to correct wiring!

General notes

Our “General Terms and Conditions for Business“ together with the “General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry“ (ZVEI conditions) including supplementary clause “Extended Retention of Title“ apply as the exclusive terms and conditions

In addition, the following points are to be observed:

These instructions must be read before installation and putting in operation and all notes provided therein are to be regarded!
Devices must only be connected to safety extra-low voltage and under dead-voltage condition. To avoid damages and errors at the device (e.g. by voltage induction) shielded cables are to be used, laying parallel with current-carrying lines is to be avoided, and EMC directives are to be observed.
This device shall only be used for its intended purpose. Respective safety regulations issued by the VDE, the states, their control authorities, the TÜV and the local energy supply company must be observed. The purchaser has to adhere to the building and safety regulations and has to prevent perils of any kind.
No warranties or liabilities will be assumed for defects and damages arising from improper use of this device.
Consequential damages caused by a fault in this device are excluded from warranty or liability.
These devices must be installed and commissioned by authorised specialists.
The technical data and connecting conditions of the mounting and operating instructions delivered together with the device are exclusively valid. Deviations from the catalogue representation are not explicitly mentioned and are possible in terms of technical progress and continuous improvement of our products.
In case of any modifications made by the user, all warranty claims are forfeited.
This device must not be installed close to heat sources (e.g. radiators) or be exposed to their heat flow. Direct sun irradiation or heat irradiation by similar sources (powerful lamps, halogen spotlights) must absolutely be avoided.
Operating this device close to other devices that do not comply with EMC directives may influence functionality.
This device must not be used for monitoring applications, which serve the purpose of protecting persons against hazards or injury, or as an EMERGENCY STOP switch for systems or machinery, or for any other similar safety-relevant purposes.
Dimensions of housings or housing accessories may show slight tolerances on the specifications provided in these instructions.
Modifications of these records are not permitted.
In case of a complaint, only complete devices returned in original packing will be accepted.

Notes on commissioning:
This device was calibrated, adjusted and tested under standardised conditions. When operating under deviating conditions, we recommend performing an initial manual adjustment on-site during commissioning and subsequently at regular intervals.

Commissioning is mandatory and may only be performed by qualified personnel! These instructions must be read before installation and commissioning and all notes provided therein are to be regarded!

DIMENSIONS

Dimensions

Subject to errors and technical changes. All statements and data herein represent our best knowledge at date of publication. They are only meant to inform about our products and their application potential, but do not imply any warranty as to certain product characteristics. Since the devices are used under a wide range of different conditions and loads beyond our control, their particular suitability must be verified by each customer and/or end user themselves. Existing property rights must be observed. We warrant the faultless quality of our products as stated in our General Terms and Conditions

Dimensional drawing