Chapter 1 The ALA5 The ALA5 is an ATEX certified (intrinsic safety) 2-wire 4-20mA amplifier providing a wide range of signal conditioning for Strain Gauges, Load Cells, Pressure and Torque Transducers. Combining the ICA5ATEX miniature loadcell amplifier with the stainless steel ILEATEX enclosure produces a compact, robust and certified in-line amplifier suitable for use in zones 0, 1, and 2 in hazardous locations.
The ALA5 is supplied pre-wired with 2-core screened cable for the supply/signal and 4-core screened cable for the loadcell connections. If installing into a hazardous zone, the ALA5 must be connected via an approved ATEX Barrier with the following parameters: Uo = 28V, Io = 100mA, Po = 0.7W, Barrier Impedance 300Ω.
The ALA5 is supplied with a 1m input cable and a 5m output cable. If the cables are too short for a particular installation, they can be replaced with longer lengths or joined provided that an ATEX approved junction box is used and the conditions set out below are satisfied.
Max shunt resistance = ((24 - 9) / 0.02) –10 = 740 Ohms Chapter 3: Calibration In order to calibrate the ALA5 the cover of the enclosure must be removed as follows: Mechanical tools required: 1.5mm hex key, 14mm AF spanner and flat-blade screwdriver, maximum width 1.5mm.
16mA for 4-20mA final calibration with 75% input or 20mA if 100% input. When re-assembling the ALA5 it is imperative that the ‘O’ is fitted correctly and the cable gland re-tightened to maintain a gas-tight seal.
IMPORTANT: OEM customers must hold a notified body Quality Assurance Notification (QAN) if the ICA5ATEX is to be installed into a Mantracourt ATEX approved ‘generic’ enclosure. If installed into a non-ATEX approved enclosure, the whole assembly must be submitted for ATEX certification by an appropriate body.
1 x M2 cylindrical spacer M2 x 12mm cap screw Cover Ensure that the ‘O’ ring is fitted to the body. Please refer to Appendix A – ‘Special conditions of safe use’ Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
Stainless steel type 304 Body material Stainless steel type 316 or 17-4 Threaded entries PG7 / 20 TPI Cable entries PG7 EMC glands (e.g. Jacob 50.007/EMV 14mm AF) Environmental rating IP67 Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
PCB tracks must maintain a minimum 0.2mm separation distance to the enclosure wall. Schedule of limitations: ILEATEX Component: PCB tracks must maintain a minimum separation distance to the enclosure wall as required by the amplifier ATEX approval. Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
Equipment category: very high protection Hazard: gas atmosphere - zones 0,1 and 2 Certification Code details Explosion protection Intrinsic safety according to EN60079-11 (previously EN 50020) Hydrogen/Acetylene gas group Temperature Classification – surface temperature <135°C Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
Ex ia IIC T4 Name and position of person binding the manufacturer or authorised representative: Signature: Name: Mr Brett James Function: Design Manager Location: Mantracourt Electronics Ltd Date of issue: April 2016 Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
ATEX Directive (2014/34/EU). Name and position of person binding the manufacturer or authorised representative: Signature: Name: Mr Brett James Function: Design Manager Location: Mantracourt Electronics Ltd Date of issue: April 2016 Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
ATEX Directive (2014/34/EU). Name and position of person binding the manufacturer or authorised representative: Signature: Name: Mr Brett James Function: Design Manager Location: Mantracourt Electronics Ltd Date of issue: April 2016 Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
ICA5ATEX Certificate: Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
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ILEATEX Certificate: Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...
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In the interests of continued product development, Mantracourt Electronics Limited reserves the right to alter product specifications without prior notice. Doc No. 517-918 Issue 1.5a 12.05.16 Mantracourt Electronics Limited ALA5, ILEAtex and ICA5Atex User Manual...