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Summary of Contents for GEM 125 Series
- Page 1 GEMÜ 125x Limit switches Operating instructions...
- Page 2 All rights including copyrights or industrial property rights are expressly reserved. Keep the document for future reference. © GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG 01.10.2024 GEMÜ 125x 2 / 20 www.gemu-group.com...
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Page 3: Table Of Contents
10 Electrical connection ........... 10.1 Inserting the cable ......... 10.2 Electrical connection in the potentially ex- plosive areas ..........10.3 GEMÜ 1250 electrical connection ....10.4 GEMÜ 1251/1252 electrical connection ..10.5 GEMÜ 1256/1257 electrical connection ..10.6 Switch positions .......... -
Page 4: General Information
Imminent danger! ▶ Non-observance can cause death or severe injury. WARNING Potentially dangerous situation! ▶ Non-observance can cause death or severe injury. CAUTION Potentially dangerous situation! ▶ Non-observance can cause moderate to light injury. GEMÜ 125x 4 / 20 www.gemu-group.com... -
Page 5: Safety Information
3. Carry out installation and commissioning using trained 4. Do not store solvents, chemicals, acids, fuels or similar personnel. fluids in the same room as GEMÜ products and their spare 4. Provide adequate training for installation and operating parts. personnel. -
Page 6: Product Description
Name Limit switch Fig. 3: GEMÜ 1250 operating principle Plug The GEMÜ 1250 limit switch is equipped with a built-in Locking screw bistable change-over contact with two switch positions. The limit switch changes to the "Maximum" switch position (posi- 4.2 Function tion B) when the float, which is equipped with a permanent magnet, passes upwards past the limit switch. -
Page 7: Gemü Conexo
The products must: For further information on GEMÜ CONEXO please visit: www.gemu-group.com/conexo - Only be used for measuring the flowmeters of the GEMÜ 800, GEMÜ 840 and GEMÜ 850 series. In the corresponding design with CONEXO, this product has an RFID chip for electronic identification purposes. The posi- - Only be operated within the performance limits (see “Elec-... -
Page 8: Order Data
ATEX(2014/34/EU) zone1/21 Order example Ordering option Code Description 1 Type 1250 Change-over contact limit switch for variable area flowmeter 2 Fieldbus Without 3 Accessory Accessory 4 Option Without 5 ATEX zone ATEX(2014/34/EU) zone1/21 GEMÜ 125x 8 / 20 www.gemu-group.com... -
Page 9: Technical Data
7.4 Electrical data Switching voltage: GEMÜ 1250: max. 175 V (DC or peak AC) GEMÜ 1251 – 1257: max. 250 V (DC or peak AC) Switching current: GEMÜ 1250: 0.5 A (DC or peak AC) GEMÜ 1251 – 1257: 1.0 A (DC or peak AC) Switch rating: GEMÜ... -
Page 10: Dimensions
8 Dimensions 8 Dimensions GEMÜ 1250, 1251, 1252 GEMÜ 1256, 1257 51,5 Dimensions in mm GEMÜ 125x 10 / 20 www.gemu-group.com... -
Page 11: Installation
10.1 Inserting the cable Fig. 6: Assembling the limit switch Fig. 7: Inserting the cable 1. During assembly of the GEMÜ 1250–1257 limit switches observe the correct position and nominal sizes. 1. Undo the cable gland 1 and screw 5. 2. Clamp the limit switch 2 onto the dovetail 1 on the meter- 2. -
Page 12: Electrical Connection In The Potentially Explosive Areas
11 Commissioning the flowmeter 10.2 Electrical connection in the potentially explosive 10.3 GEMÜ 1250 electrical connection areas In the potentially explosive area, the limit switches must be connected to ATEX-certified buffer stages or switching ampli- fiers (one or two channels) in ignition protection type [Ex ia/ib] IIC. -
Page 13: Maintenance
▶ Damage to the product. ▶ Manufacturer liability and guarantee will be void. Only the spare parts specified below must be replaced. ● The device must only be repaired by GEMÜ. ● Preventive maintenance/cleaning is recommended depending on the operating conditions. -
Page 14: Troubleshooting
The product does not output any continu- Faulty product Replace product ous signal Variable flow Dampen pulsation of flow The product outputs an irregular signal, Faulty product Replace product which does not correspond to the float position GEMÜ 125x 14 / 20 www.gemu-group.com... -
Page 15: Disposal
Returned goods can be processed only when this note is completed. If no return delivery note is included with the product, GEMÜ cannot process credits or repair work but will dispose of the goods at the operator's expense. -
Page 16: Eu Declaration Of Conformity
Version 1.0 EU-Konformitätserklärung EU Declaration of Conformity Wir, die Firma We, the company GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG Fritz-Müller-Straße 6-8 74653 Ingelfingen Deutschland erklären hiermit in alleiniger Verantwortung, dass die nachfol- hereby declare under our sole responsibility that the below-... - Page 17 GEMÜ 125x 17 / 20 www.gemu-group.com...
- Page 18 GEMÜ 125x 18 / 20 www.gemu-group.com...
- Page 19 19 / 20 GEMÜ 125x...
- Page 20 GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG Fritz-Müller-Straße 6-8, 74653 Ingelfingen-Criesbach, Germany Subject to alteration Phone +49 (0) 7940 1230 · info@gemue.de www.gemu-group.com 10.2024 | 88629878...
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