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Alarma por obstrucción/ alarma de nivel por capa

WGA 04 consists of an evaluation unit and an ultrasonic probe (WGASN 01). The probe generates an alarm signal when it detects solid matter between the two probe tips.
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ALARMA POR OBSTRUCCION/ ALARMA DE NIVEL POR CAPA

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APLICACION MODELO TECNOLOGIA MARCA
Alarmas Unidades de alarma WGA04/ WGA05   Afriso
FUNCION CODIGO SECCION
Alarma por obstrucción/ alarma de nivel por capa 09-1005 09

Alarm units WGA 04/WGA 05 for oil, petrol and grease separators
(silt alarm/layer level alarm).

Application
WGA 04 is a unit designed to provide alarm signals in oil, petrol and grease separators in which also silt and sludge accumulations occur. WGA 05 also detects the level of the layer of separated liquid and generates an alarm signal when it is necessary to empty and clean the separator.

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Description
WGA 04 consists of an evaluation unit and an ultrasonic probe (WGASN 01). The probe generates an alarm signal when it detects solid matter between the two probe tips. The evaluation unit is equipped with 2 relay outputs, visual and audible alarms as well as test and re-set buttons. WGA 05 is equipped with an additional conductivity probe (WGA-SD) for monitoring the level of the separating layer. The WGA-SD probe is mounted below the constant level of the separator. As soon as the oil, petrol or grease layer reaches the critical level, the unit generates an alarm signal. The evaluation unit monitors the connected probes and signals short circuits or cable breaks in the probe circuits.

Technical specifications WGA 04

Operating temperature range
Medium:
0 °C/+60 °C
Ambient: -25 °C/+50 °C

Probe WGA-SN 01 (silt) Principle of operation: ultrasound
Length 142 mm, width 79 mm
Probe cable PVC, oil-resistant, length 5 m
Distance probe – evaluation unit Max. 300 m
Supply voltage AC 230 V
Power consumption Approx. 2 VA

Relay outputs
Relay:
2 voltage-free changeover contacts (1 can be reset)
Contact rating: AC 250 V/ 5 A/100 VA

Visual indication
1 green LED normal operation
1 red LED alarm
1 red LED fault

Audible alarm Integrated piezo-buzzer, re-setable
Operational test Integrated test button
Housing Wall mounting housing made from impact resistant plastic (polycarbonate) W x H x D: 175 x 125 x 75 mm,
Protection IP 65 (EN 60529)
Electrical connections 4 x cable gland M16

ATEX approvals
Evaluation unit:
Ex II (1) G [EEx ia] II C
Probe WGA-SN 01: Ex II 1 G Ex ia II B T5

Scope of delivery
Evaluation unit, probe WGA-SN 01, junction box, mounting accessories

Additional specifications WGA 05

Probe WGA-SD (layer level) Principle of operation: conductivity
Length 214 mm, Ø 25 mm
Power consumption Approx. 4 VA

Visual indication
1 green LED normal operation
2 red LEDs alarm / 2 red LEDs fault

Electrical connections 5 x cable gland M16
ATEX approvals Probe WGA-SD: Ex II 1 G EEx ia II A T4
Scope of delivery Similar to WGA 04, but with additiobal probe WGA-SD
 

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