Product classification

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3 Product classification 04 Our savoir-faire 05 Electromechanical sensors (HF05 and HF32) 06 Control unit for electromechanical sensor (HF85) 06 Alarm equipment (HF90/1 and HF90/2) 07 Electronic sensors (HF10 and HF35) 08 Electronic sensors (HF40, HF41 and HF50) 09 Electronic sensors (HF52, HF53 and HF70) 10 Interface, frequency converter (HF84/14 and HF84/4) 11 Electronic control unit (HF80) 11 Digital display (HF87) 12 UHF Radio link (HF89) 12 Computer assistance and management 13 Dynamometric lifting shackle (HF55BT) 13 Load controller for chain hoist (HF25) 13 Dynamometers 15 Instrumented sheave blocks 16 Repair and calibration 17 Configuration of rigging systems 18 Dimensions for machining dynamometric pin 19 Photographs of some installations 3

4 Our savoir-faire Study and design of products Design and development of our electronic control systems Machining of sensors on NC machines Assembly, calibration and repair Instrumentation of all types of sensors MANUFACTURING SENSORS ON NC MACHINES INSTRUMENTATION AND ELECTRONIC CONTROL OF SENSORS ASSEMBLY AND CALIBRATION OF PRODUCTS 4

5 Electromechanical sensors T he electromechanical load limiter has been developed for installation on small and medium lifting equipment where the sole selection criterion is the load limiter function. This sensor provides the most economical solution that is also the easiest to install. For capacities from 250 to 12,000 dan Available with one or two set levels Contact rating: 5A / 250VAC Protection rating: IP 55 Exists in standard A version, or high-precision B version HF 05 SENSOR Installation Fits directly between the attachment point of the dead end and the wedge socket For cables from 4 to 36 mm diameter For cable loads of 100 to 12,000 dan Available with one or two set levels Contact rating: 5A / 250VAC Protection rating: IP 55 Exists in standard A version, or high-precision B version Installation Fits directly to the dead end of the rigging HF 32 SENSOR 5

6 Control unit for sensors Version b C ontrol unit designed for operation with all electromechanical sensors that use a microswitch for level detection. Its function is to act as an interface between the microswitch and the contactor coil on the lifting equipment. CONTROL UNIT HF 85 Two changeover contacts A dynamic effects corrector Output for audible and visual alarms Permanent self-checking of the sensor Overload simulation button Installs on DIN rail Power supply: 48/110 VAC or 230/400 VAC Installation Designed to operate with all version B electromechanical sensors Alarm equipment Flashing lamp type HF90/2 6 Electronic siren type HF90/1 110 db

7 Electronic sensors O ur family of electronic sensors provides a solution to practically 100% of your requirements, whatever the loads or capacities of your lifting equipment. All the sensors are fitted with integrated electronics generating a digital signal from 0 to 10,000 Hz and allowing for distances of up to 100 metres between the sensor and the control unit. SENSOR HF 10 Sensor operation: self-aligning traction sensor Capacity: from 1,600 to 20,000 dan Frequency converter: integrated in sensor Load management: using control unit type HF80 Operating temperature: -20 C to +60 C Connection: via PG?? and integrated terminal block Sensor precision: 0.3% of nominal capacity Installation Installed directly on the dead end of the rigging Sensor operation: electronic sensor fitted to cable Measurement range: for cables from 4 to 46 mm diameter Capacity: from 200 to 20,000 dan Frequency converter: integrated in sensor Load management: using control unit type HF80 Operating temperature: -20 C to +60 C Connection: via PG?? and integrated terminal block Sensor precision: ± 1% of nominal capacity Protection rating: IP65 Installation Installed directly on the dead end of the rigging SENSOR HF 35 7

8 Electronic sensors Sensor operation: compression sensor Capacity: from 1,600 to 20,000 dan Frequency converter: integrated in sensor Load management: using control unit type HF80 Operating temperature: -20 C to +60 C Connection: via PG?? and integrated terminal block Sensor precision: ± 1% of nominal capacity Installation Installed directly on the traction pin at the dead end of the rigging SENSOR HF 40 Sensor operation: compression sensor Capacity: from 5,000 to 50,000 dan Frequency converter: remote type HF84 Weight indicator: type HF87 Operating temperature: -20 C to +60 C Sensor precision: 0.07% of nominal capacity SENSOR HF 41 Installation Ideally, sandwiched between two chassis members to provide high-precision weighing. 8 Sensor operation: load-cell pin manufactured to order Capacity: from 500 kg to 1000 tonnes Frequency converter: integrated in sensor Load management: using control unit type HF80 Operating temperature: -20 C to +70 C Connection: via PG?? and integrated terminal block Sensor precision: ±0.3% of nominal capacity SENSOR HF 50 Installation May be fitted to all applications with a standard pin

9 Electronic sensors SENSOR HF 52 Function: dynamometric swivel housing Capacity: from 1,600 to 100,000 dan Frequency converter: integrated in sensor Load management: using control unit type HF80 Operating temperature: -20 C to +60 C Connection: via PG?? and integrated terminal block Sensor precision: ±0.3% of nominal capacity Installation Designed to accept directly the traction pin at the dead end of the rigging SENSOR HF 53 Sensor operation: instrumented wedge socket Type of wedge socket: CROSBY Dynamometric pin: POWER LIMIT in stainless steel Capacity: for cable diameters from 9 to 35 mm Frequency converter: integrated in sensor Load management: using control unit type HF80 Operating temperature: -20 C to +60 C Connection: via PG?? and integrated terminal block Sensor precision: ±1% of nominal capacity Installation Direct replacement for the original wedge socket without any height loss. For all lifting equipment with a dead end Sensor operation: traction or compression Capacity: from 500 to 10,000 dan Frequency converter: remote type HF84 Load management: using control unit type HF80 Operating temperature: -20 C to +60 C SENSOR HF 70 Sensor precision: 0.1% of nominal capacity Installation Many applications are available to answer specific requirements 9

10 Interface Frequency converter Frequency converter This frequency converter is supplied in an IP67, aluminium housing and converts the mv signal from the sensors into a frequency signal that varies from 0 to 10,000 Hz, and is compatible with all our control equipment. This frequency converter is already incorporated into most of the Power Limit sensors. This frequency converter also ensures that all strain gauge sensors are compatible with the Power Limit control equipment. HF 84/1 Converter addition unit This frequency converter addition unit, in an aluminium housing, can sum 4 mv sensors and output a proportional frequency signal ranging from 0 to 10,000 Hz. 10 HF 84/4

11 Control of electronic sensors C ontrolled entirely by a microprocessor, this control unit is able to program setpoints automatically. It calculates and stores loads on travelling cranes according to the FEM (European Federation of Materials Handling) standard MONITOR HF 80 Function: digital control unit Management: overload and cable slack Power supply: 48/110 or 230/400 VAC Protection of settings: 4-digit code Dynamic effects management: integrated Contacts: 2 changeover contacts Alarm: audible and visual Operating temperature: -20 C to +60 C Digitales Display Screen: red display + bar graph Programming: 4 push buttons Dimension of digits: from 16 to 125 mm Power supply: 230/400 VAC Tare function: integrated PC connection: included via RS 232 Load limiter function: integrated Protection rating: IP65 HF 87 11

12 Wireless link UHF Transmitter/receiver All the Power Limit sensors can be connected to a telemetry box that allows communication over long distances between the sensor and the display. This unit is very useful in providing a link between an instrumented sheave block and a display installed on a travelling crane HF 89 Assistance on ultra-portable computer P ower Limit can supply an ultra-portable computer (format A5) equipped with specific software that can act as an interface between the control units and the displays. It provides very rapid access to all the setting parameters, or after a certain period of utilisation it can provide the whole spectrum of loads according to the requirements of the FEM (European Federation of Materials Handling) standard. 12

13 Instrumented lifting shackles Lifting shackle Instrumented and stand-alone lifting shackle with a Bluetooth communication link. Reads and stores loads directly on a PDA or an ultra-portable PC. Three operating modes to answer all your needs. The PDA can store and handle all measurements taken. HF 55 BT Supplied with PDA manufactured by HP or with an ASUS ultra-portable Field of application Weighing suspended loads or evaluation of tensile loads Capacity: from 6.5T to 100 Tonnes Data interrogation range: 25 metres Operating autonomy: 15 hours Load controller for chain hoist Description This HF 25 kit and its accessories are supplied in a robust box, and can determine the load on chain hoists very rapidly and efficiently. It is thus very easy to check if the torque limiter fitted to a chain hoist is correctly adjusted according to current regulations. The need for calibrated loads is completely eliminated. TYP HF 25/1/A 13

14 Equipment manufactured by our partner Dynamometers TRACTEL Dynamometer Type: LLZ Capacity: from 0.25T to 20T Precision: ± 0.8% TRACTEL Dynamometer Type: LLX Capacity: from 0.25T to 250T Precision: ± 0.2% TRACTEL Dynamometer with remote interrogation Type: LLX-2 Capacity: from 0.5T to 10T Data interrogation range: 80 metres Precision: ± 0.2% HF 55 BT TRACTEL Dynamometer Type: MWX Capacity: 0,5 bis 25 t Mini-Dynamometer Type: HCB Capacity: 20 bis 200 kg Precision: +/- 0,1 % 14

15 Instrumented sheave blocks D epending upon the configuration and capacity of your lifting block, POWER LIMIT is able to provide full instrumentation according to your requirements. We can also ensure data transmission of weight measurements directly to a computer using a radio link. 3,2 T 16 T 25 T 75 T 15

16 Repair and testing Repair and testing I n addition to our own manufacturing workshop, we have the capacity to carry out repair and calibration of all types of dynamometers. In most cases, we can also calibrate sensors acting as load limiters, prior to delivery. Calibration We have three certified machines: A tensile tester with capacity 2 5 and 10 Tonnes A tensile tester with capacity 10 and 60 Tonnes A tensile or compression tester with capacity 32 Tonnes 16

17 Configuration of main rigging systems Figure 01 Figure 02 Figure 03 Figure 04 Figure 05 Figure 06 Figure 07 Figure 08 17

18 Dimensions for manufacturing Dynamometric pin A Bottom B E F ø G Top C D Required dimensions Load-bearing are «A» =... mm «B» =... mm Width of active part «C» =... mm Effective length of pin «D» =... mm Dimensions of retaining key «E» =... mm «F» =... mm Diameter and tolerance «G» =... mm Tolerance Capacity on load pin =... mm. =... dan Direction of load (see arrows) Direction = Is a greasing system fitted? Yes u N0 u

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23 Product classification 04 Operating principle of Power Limit tensiometers 05 Standard tensiometer (HF37/1/A) 06 Tensiometer with Bluetooth communication 07 Tensiometers for heavy loads (HF36/1, HF36/2 and HF36/3) 08 New Bluetooth version of tensiometer (HF36/2) 09 Tensiometer (HF36/4) with hydraulic assistance 10 Specific tensiometer for lifts (HF39/1/A) 11 Specific tensiometer for lifelines 12 Tensiometer for measuring tension in tie-down straps 13 POWERPLUG HF 44/1/A intended for testing strength of threaded concrete anchor plugs?, 14 Compact extractometer (HF 44/2/A) and extractometer (HF/44/3/A) with hydraulic assistance 15 Weighing platform and pallet weighing 16 Photographs and some applications of tensiometers 3

24 Tensiometers Description T he tensiometer is a precision item of equipment that allows loads in stretched flexible structures to be measured, without installing a dynamometer in line. Operating principle W hen the tensiometer is placed on a stretched cable, it generates a signal that is approximately proportional to the load (raw, untreated signal). Nevertheless, there are a very great variety of cables on the market and each cable has its own characteristics of composition, diameter, rigidity, specific weight, etc. Unfortunately, all these parameters have an incidence on the measurement results. In order to allow for all these specificities, Power Limit has designed and created its own database. In fact, for each cable stored in memory, 2 or 3 similar cables but of differing origins have been selected from amongst those most widely found in the market. Each stored reading is compared on our tensile test benches, and the result is the average of the three readings carried out by rotating the sensor through 120 around the cable each time. To qualify a cable, 10 sets of readings are made in steps of 10% of the nominal load a total of 30 readings for each cable. These 30 readings are treated by the microprocessor that then calculates the correction polynomial that is applicable to the cable in question, and which is then stored in the database. Using this method, Power Limit is the only manufacturer to guarantee you excellent precision across the whole measurement range. 4

25 Tensiometers TYPE HF37/1/A Specific tensiometer for different applications - Guy-wires for aerials - Guy-wires for wind turbines - Rigging of sailing vessels - Capable of measuring 7 cables of differing diameters - For cables of 5 to 13 mm - Three different databases are available 200 hours autonomy HF 84/1 5

26 Tensiometers Tensiometer with BLUETOOTH communication system Intended for the same applications as the HF37/1/A model, but with: - Reading load values on a PDA at a distance of approximately 25 meters; - It is capable of measuring cables of 7 different diameters in three different types of structure (normal, rigid, and rope); - It is fitted with a temperature sensor; - The PDA is supplied with a management program developed by Power Limit, which makes it a remarkable tool in ensuring the traceability of readings carried out. Supplied with PDA manufactured by HP or with an ASUS ultra-portable TYPE HF37/1/BT Supplied in made-to-measure case, suitable for use on-site 6

27 Tensiometers For cables from 5 to 44 mm in diameter and for measuring loads of 100 kg to 40 tonnes HF36/HZ Version Digital display compatible with all three tensiometers - Stored spectra for approximately 100 different cable types - Very easy to use and excellent measurement precision - Equipment suitable for on-site use 7

28 Tensiometers HF36/2/BT Interrogation range ± 25 meters Supplied with PDA manufactured by HP or with an ASUS ultra-portable NEW!!! Tensiometer with BLUETOOTH communication system - Wireless tensiometer, completely self-contained; - For cables or ropes from 8 to 28 mm diameter; - For measuring loads from 150 to 20,000 dan; - It has three different databases, standard cables, rigid cables and ropes. - The PDA is supplied with a management program developed by Power Limit, which makes it a remarkable tool in ensuring the traceability of readings carried out. 8

29 Large tensiometers Tensiometer with hydraulic assistance HF36/4/HYD Tensiometer HF36/4 and HF 36/5 for cables with diameters from 40 to 90 mm and loads up to 200 Tonnes. 9

30 POWERLIFT TYPE HF39/1/A Specific tensiometer for measuring the load distribution in lift cables. It is supplied with a database that is specific to lifts and for diameters from 8 to 13 mm. TYPE HF39/1/B Also available in a BLUETOOTH Version, this model also allows loads to be measured in dynamic mode at a rate of 50 readings a second. It also ensures complete traceability of all measurements and tests carried out. The interrogation range is ± 25 meters. POWERLIFT POWERDOOR Description The POWERDOOR is a measuring unit intended for measuring the impact force for doors with motorized closure. New!!! 10 TYPE HF42/1/A

31 POWERLINE T ensiometer specially designed for measuring loads in lifelines. Its database contains data for seven different lifelines, which thus allows almost all lifelines available on the market to be checked. HF45/A 11

32 powersangle HF 38/1/E Application This tensiometer is an autonomous measuring unit intended to measure tie-down tensions in synthetic fibre straps. It is designed to measure loads in straps from 35 to 50 mm in width. It complies fully with the requirements of the EN standard. Material: aircraft-quality aluminium Measurement capacity: from 10 to 1500 dan Measurement precision: ± 2% Measurement units: kg, dan, IBS Operating temperature range: -5 C to +50 C Protection rating: IP 62 Operating autonomy: 200 hours 12

33 POWERPLUG Extractometer The POWERPLUG HF 44/1/A is an autonomous, traction testing unit intended to test the resistance of threaded anchor plugs in concrete. - Control of sliding is either automatic or manual; - It can measure loads from 20 to 1500 dan; - It contains two test programs which comply with the EN 795 standard; - It can store up to 50 test results; - It is supplied with four threaded studs (M10 M12 M14 M16) and a traction hook for rings. TYP HF44/1/A 13

34 Compact Extractometer HF 44/2/A HF 55 BT Special features This unit has been specially developed to test anchor fittings that are set in confined positions. The design of this unit allows it to be used in any position since the measuring sensor can be both rotated and reversed. It is supplied with a test program that complies with the EN 795 standard. Traction capacity: from 0 to 1600 dan Precision of applied load: ± 0.5% Diameter of load bell-housing: 80 mm Load application: using spanner supplied with unit Protection rating: IP65 Autonomy: 200 hours (3 AA batteries) Extractometer with hydraulic assistance HF 44/3/A 14 Traction capacity: from 0 to 3600 dan Diameter of load bell-housing: 120 mm

35 Weighing platform HF 145 Application Weighing and checking vehicles for acceptance or dispatch of raw materials. Weight measurements may be printed out simply by connecting a printer to the display unit.. Capacity: and 10 T Material: aircraft-grade aluminium Protection: anodising Sensor precision: class C3 Display: 6 red digits Height of digits: 20 mm Printer or computer connection: 2 serial ports Approval: OIML 10,000 points Pallet weigher Very strong, metallic chassis in a U -shape, designed to accept a pallet mover. Weighing is by means of 4 precision sensors. Capacity: 1,250 and 2,500 kg Feet: pivoting on rubber base Sensor precision: class C3 Protection rating: IP 67 Display: 6 red digits Height of digits: 20 mm Printer or computer connection: 2 serial ports Approval: OIML 10,000 points Power supply: via power adaptor 230/12 DC 15

36 16 Applications of tensiometers

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