ENGLISH User manual © Copyright HT ITALIA 2009 Release IT 1.
HT-5000 Indice: 1 2 3 SAFETY PRECAUTIONS AND PROCEDURES ..........................................................2 DESCRIZIONE GENERALE.........................................................................................3 PREPARATION FOR USE ...........................................................................................3 3.1 Initial ......................................................................................................................3 3.2 Supply voltage ...................
HT-5000 1 SAFETY PRECAUTIONS AND PROCEDURES This instrument conforms with safety Standard IEC/EN61010-1 related to electronic measuring instruments. For your own safety and to avoid damaging the instrument follow the procedures described in this instruction manual and read carefully all notes preceded by this symbol .
HT-5000 2 DESCRIZIONE GENERALE The HT-5000 location system is designed for the uncomplicated and user-friendly determination of the location, orientation and depth of metallic lines (e.g. cable and pipe lines). It can be used to probe areas for unknown lines or for locating specific lines.
HT-5000 4 OPERATING INSTRUCTIONS 4.1 INSTRUMENT DESCRIPTION 4.1.1 Description of the receiver RX5000 Fig. 1: Description of the receiver RX5000 Item 1 Description Control panel with display (see paragraph 4.1.2) Speaker with volume control The speaker plays back various acoustic signals (e.g. beeps with modulating pitch relative to the signal strength) 2 Quieter 3 4 5 Louder When the receiver is switched on, the volume is set at a standard level.
HT-5000 4.1.2 Display and control panel of RX5000 1 2 3 5 6 4 Fig.
HT-5000 4.1.3 Description of transmitter TX5000 The TX5000 transmitter is distinguished by the following features: • Inductive coupling of the signal using the integrated antenna or transmitter clamp • Direct (galvanic) coupling of the signal using connected equipment (such as the measurement cable and power socket adapter) • Two-step adjustable transmission power (0.1W / 0.5W) • Selectable signal output continuous or pulsed Fig.
HT-5000 4.2 CONNECTION AND INITIAL USE OF TRANSMITTER TX5000 4.2.1 Transmitter signals and operation modes The type and strength of the output signal can be configured by the user as follows to meet the specific requirements of either the line to be located or the site to be surveyed: Symbol Signal type Pulsed signal As it is more easily distinguished from other signals, the pulsed signal is helpful for locating when there is interference within the frequency range of the transmitter.
HT-5000 4.2.2 Options for direct and inductive signal coupling CAUTION If the transmitter is connected to electrical service cables, it has to be considered that the device is designed to achieve CAT II / CAT III 440 V and CAT IV 300 V with Class 2 protection (double insulation) according to IEC / EN 61010-1. This means that the maximum voltage between the two terminals must not exceed 440 V in measurement categories CAT II / CAT III and 300 V in measurement category CAT IV 4.2.2.
HT-5000 Application Principle of coupling Single-wire lines or pipes (with or without insulation against earthing) The distance between the earth spike and the ends of the connected lines should be as great as possible There is a danger of the return current flowing through the earth into adjacent lines, which could result in their path being follow Single-wire cable with metallic screen and earthing insulation Short circuit between internal conductor and screen at the end of the cable with earthing at th
HT-5000 4.2.2.2 Coupling with special accessories The signal from the transmitter can be directly coupled into plug sockets, antenna connections coax and telephone jacks with the aid of a suitable adapter cable (Cod. 890008852). In doing so, it is not necessary to disconnect the lines. Fig. 5: Couplng via adapter cable The transmitter signal can be coupled onto easily accessible cables with the aid of a 100mm transmitter clamp (Cod. 820005314).
HT-5000 4.2.2.3 Inductive signal coupling For lines which are not easily accessible, the signal from the transmitter has to be inductively coupled via the integrated antenna. The inductive coupling of the signal is highly recommended if unknown lines are to be located (e.g. at a construction site). To determine the orientation of a specific line, the transmitter has to be positioned directly above the presumed line as shown in Fig. 7.
HT-5000 Under certain circumstances lines at lower depths can 'hide' deeper, adjacent lines, thus making it more difficult to locate them. In such cases, the transmission characteristics of the transmitter TX5000 can be fully utilised and the lines which have already been located can be masked out (see Fig. 8) Fig.
HT-5000 4.2.2.4 Signal coupling in non-metallic pipes With the aid of the FlexSonde GOK50-R the transmitter's signal can be transmitted through non-metallic pipes, as shown in the picture below: Fig. 9: Signal coupling in non-metallic pipes Alternatively, any other active probe (e.g. a camera probe) with adequate transmitting frequency can be located using the receiver. For a detailed description, please refer to the manual of the respective product.
HT-5000 4.2.3 Initial use of the transmitter TX5000 Follow the steps listed below in order to prepare the transmitter to search for lines in conjunction with the receiver: Step 1 2 Action Connect the transmitter to the line to be located using the most suitable method, or place the transmitter on the site to be searched see paragraph 4.2.2 Press to switch on the transmitter P 3 M Select the desired output signal using the and function keys (see paragraph 4.1.
HT-5000 4.3 USE OF RECEIVER RX5000 4.3.1 Modes of operation for the receiver RX5000 If a TX5000 transmitter is not available, a site can also be probed by means of passive line location. The RX5000 receiver is capable of detecting radio signals in the frequency range between 15kHz to 23kHz as well as power signals in the frequency range between 50/60Hz. The following pictures illustrate how each of the signals couple onto conductors buried in the ground: Fig.
HT-5000 4.3.1.1 Regulating the sensitivity level to match the reception signal strength Reception signal strength and sensitivity are shown in the following segments of the display: 1 2 Item 1 2 Mode of operation Reception signal display bargraph The strength of the reception signal is represented by this bargraph scale. These are relative values which are based on the sensitivity level set in the receiver The triangles (▲▼) above and below the scale are a visual marker for maximum values.
HT-5000 4.3.1.2 Handling the receiver and locating the line In order to be able to determine the position and orientation of a metallic conductor, the following rules should be internalised and applied when locating lines. As shown in Fig. 11 the receiver should always be held in front of the body in an upright position and as close to the ground as possible. When the transmitter is brought directly over a metallic conductor, the maximum signal strength will be measured.
HT-5000 4.3.1.3 Changing of the system settings Proceed as follows to change the settings: Step Action Briefly press the button while continuing to hold down the until an audible signal is heard.
HT-5000 4.3.2 General site surveying A general site probing urgently needs to be conducted and there is inaccurate or no information available as to the location and orientation of metallic conductors on a site planned for construction (e.g. excavation work). When a site is to be searched for unknown conductors, a systematic approach should be taken. The following picture illustrates how to proceed: Fig.
HT-5000 4.3.3 Determining the direction of a line Step 1 2 Action If the direction of the conductor will be determined with the aid of the TX5000 transmitter, couple the transmitter's signal onto the metallic conductor in such a way that there is as little signal loss as possible (see paragraph 4.2.2 and paragraph 4.3.1) Press to switch on the receiver 3 Select the desired mode of operation by pressing the 3 key (see paragraph 4.3.1).
HT-5000 4.3.4 Determining the depth of a line The RX5000 receiver has an automatic push key depth measurement feature. One precondition is that a clear signal from the TX5000 transmitter is coupled onto the conductor to be measured. For this procedure, the transmitter's signal has to be continuous (not pulsed) (see paragraph 4.2.1). In addition to this precondition, automatic depth measurement will only function when the mode of operation of the receiver is set to TRANSMITTER.
HT-5000 4 With a steady grip, hold the receiver perpendicular to the position of a known metallic conductor, e.g. above a location which was marked during the site survey. The signal strength bargraph should show zero (see paragraph 4.3.2). In doing so, the tip of the receiver should touch the ground 5 Rotate the receiver (through its own axis) over this location until the maximum signal strength is indicated (see paragraph 4.3.1.
HT-5000 During the depth measuring process, the following symbols are used to notify the user about certain characteristics and errors: Symbol Meaning For of one of the following reasons, the depth could not be measured: • The signal received was too weak or too irregular • The receiver was not held steady enough during the measure • The receiver was not positioned directly above the line at the beginning of the process The depth of the metallic conductor / probe exceeds the measuring range (5m / 7m).
HT-5000 4.3.5 Functional test of the receiver If problems or strange measuring results occur during a line location procedure, it may be helpful to check the functionality of the receiver using the integrated self-test. This test may provide information about possible malfunctions of the instrument. Preferably, the self-test should be performed in an interference-free environment without live cables Proceed as follows to perform a self-test: Step Action Switch off the receiver RX5000.
HT-5000 Error code Description 000 Unimplemented frequency 201 Not enough battery power for the self-test procedure Interferences too strong for the self-test procedure 210 In this case, the self-test should be repeated in an environment with less interferences 220 Fault internal module L1. Contact service dept of HT ITALIA 230 Fault internal module L2. Contact service dept of HT ITALIA 240 Fault internal modules L1 and L2. Contact service dept of HT ITALIA 250 Generic fault.
HT-5000 5 MAINTENANCE 5.1 REPLACEMENT FLOOR CAP OF THE RECEIVER RX5000 The plastic floor cap, which prevents the tip of the receiver from being damaged, can be easily replaced with the aid of a pointed object (e.g. screwdriver). Fig. 14: Replacement of the floor cap 5.2 REPLACEMENT BATTERIES OF RECEIVER RX5000 The status of the receiver's batteries is checked upon start-up and indicated in the display: The system regularly checks the battery strength as well.
HT-5000 5.3 REPLACEMENT BATTERIES OF TRANSMITTER TX5000 The batteries in the transmitter TX5000 have to be replaced as soon as the red LED battery indicator starts to blink Should this occur while the user is busy locating a line with the receiver, he/she will be informed of the weak batteries via the reception signal: Type of signal Normal signal Signal when batteries are weak In order to change the 6x1.5 V batteries type LR20, both screws on the back of the transmitter must be (e.g.
HT-5000 6 TECHNICAL SPECIFICATION 6.1 TECHNICAL CHARACTERISTICS OF RECEIVER RX5000 Parameter Value Frequency ranges • Mode 1: Radio • Mode 2: Power network • Mode 3: Transmitter 15kHz ÷ 23kHz 50Hz / 60Hz 32.
HT-5000 6.2 TECHNICAL CHARACTERISTICS OF TRANSMITTER TX5000 Parameter Value Transmitted power (switchable) 0.1W / 0.5W Frequency 32.768kHz Power supply 6x1.5V batteries type IEC LR20 Working temperature • Operation • Storage 40 hours (for intermittent use with alkaline batteries, 20 °C) according to IEC/EN60068-1 -20 ÷ 55°C (-4 ÷ 131°F) -30 ÷ 70°C (-22 ÷ 158°F) Category of measure CAT II / CAT III 440V, CAT IV 300V Size (LxWxH) 260 x 255 x 140mm (10.2 x 10 x 5.
HT-5000 7 SERVICE 7.1 WARRANTY CONDITIONS This instrument is guaranteed for one year against material or production defects, in accordance with our general sales conditions. During the warranty period the manufacturer reserves the right to decide either to repair or replace the product. Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it.
