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Martindale Electric Co Ltd
Metrohm House
Penfold Trading Estate
Imperial Way
Watford
Herts
WD24 4YY
Tel: + 44 (0) 1923 441717
Fax: + 44 (0) 1923 446900
E-mail: sales@martindale-electric.co.uk
Web: www.martindale-electric.co.uk
CMR0073
Issue 4
Martindale Electric Co Ltd
Metrohm House
Penfold Trading Estate
Imperial Way
Watford
Herts
WD24 4YY
Tel: + 44 (0) 1923 441717
Fax: + 44 (0) 1923 446900
E-mail: sales@martindale-electric.co.uk
Web: www.martindale-electric.co.uk
CMR0073
Issue 4
07/04
07/04
E1620
DIGITAL MILLI-OHMMETER
INSTRUCTION MANUAL
Martindale Electric Co Ltd
E1620
DIGITAL MILLI-OHMMETER
INSTRUCTION MANUAL
Martindale Electric Co Ltd
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Summary of Contents for Metrohm E1620
- Page 1 E1620 Martindale Electric Co Ltd DIGITAL MILLI-OHMMETER Metrohm House Penfold Trading Estate Imperial Way Watford Herts WD24 4YY Tel: + 44 (0) 1923 441717 Fax: + 44 (0) 1923 446900 INSTRUCTION MANUAL E-mail: sales@martindale-electric.co.uk Web: www.martindale-electric.co.uk CMR0073 Issue 4 07/04...
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Page 3: Table Of Contents
TABLE OF CONTENTS PAGE TABLE OF CONTENTS SAFETY RULES GENERAL DESCRIPTION FRONT PANEL LAYOUT PREPARATION FOR USE OPERATING INSTRUCTIONS Preliminary Checks Precautions 9-10 Taking Measurements 10-11 Applications 11-12 Customer Test Leads 12-13 Thermal Effects 13-14 Battery Replacement Fuse Replacement 14-15 Input Limits SPECIFICATIONS Electrical... -
Page 4: Safety Rules
LIMITED WARRANTY Martindale Electric Limited warrant instruments and test equipment The E1620 has been designed with safety in mind. However, no manufactured by them to be free from defective material or factory workmanship design can completely protect against incorrect use. Electrical... - Page 5 Do not touch exposed wiring, connections or other SPARES AND ACCESSORIES ‘live’ parts of an electrical circuit. If in doubt, check the circuit first for voltage before touching it. Standard Kelvin Lead Set: DFK 0094 This instrument should not be used in wet conditions. Carry Case: DFK 0064P NOTE: This instrument should only be used by a competent,...
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Page 6: General Description
Damp Heat: IEC68–2–3 The E1620 has a custom, 3½ digit liquid crystal display with 18mm high digits which are readily viewed in most lighting conditions. This display also indicates low battery voltage, overrange and reverse polarity of load conditions. The decimal point changes to correspond with the range selected. -
Page 7: Front Panel Layout
150Ω on 2 and 20Ω ranges The ranges are selected by a four–position rotary switch, and test is initiated by pressing the push–button, test switch.While Battery: 6 off, AA size, manganese–alkali this switch is depressed the instrument takes a measurement, or nickel cadmium cells and when it is released the instrument retains he last reading taken for two minutes before automatically switching itself off. -
Page 8: Preparation For Use
±0.5% of reading ±2 digit (over Accuracy: It is recommended that the E1620 be calibrated every two years, operating temperature range, and that it should be carried out by the manufacturer or his -15ºC to +55ºC, with standard appointed agent. -
Page 9: Preliminary Checks
to 10.40mΩ at 30ºC. Account should be taken of this effect in OPERATING INSTRUCTIONS making measurements. Preliminary Checks When measuring the resistance of item, such as current shunts, which have joints of dissimilar conductors, thermal EMFs can With the leads disconnected, select the 20mΩ range affect the accuracy of the measurement. - Page 10 Connect the standard Kelvin lead set into the E1620. Current Leads One pair of leads should be connected into the C1 and P1 sockets, and the other into the C2 and P2 sockets as Shrouded, 4mm, safety plugs are illustrated below in Fig. 2. Connect the two Kelvin required at one end of each lead as crocodile clips to a shorting bar.
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Page 11: Precautions
Shrouded, 4mm, safety plugs are required at one end of each lead for If it is probable that the instrument’s protection has been connection to the E1620 measuring impaired due to electrical, mechanical or environmental sockets. damage, it must not be used. It should be returned to the manufacturer or his appointed Insulated, 16/0.2mm, tinned copper... -
Page 12: Precautions
Bond testing in aircraft, mines, railways, ships such a source of danger. anddomestic and industrial wiring installations. Set the rotary selector switch on the E1620 to the desired range. Press the test switch and hold it depressed (iii) Ring main continuity testing in industrial and until a steady reading is obtained on the display.
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