Metrohm, originally manufactured by Edgcumbe Instruments Limited, is a world famous range of instruments that Glanford Electronics can supply, calibrate and repair, including the widely used I.S. Metrohm 7. 7A 501C - Intrinsically Safe Insulation Tester For use in testing circuits and equipment in hazardous areas e.g. Methane, Ammonia and Hydrocarbons Hand Held design Battery operated Rugged construction 500V DC Test 0-500MOhm 0-50Ohm Continuity Insulation <2mA Continuity <26mA Replace that old and tatty case, treat your insulation tester to a brand new leather case, buy one today! Metrohm 7A501C Compliance Statement.July 2003 In 1965, The Factories Inspectorate in the U.K. issued to Edgcumbe Instruments Intrinsically Safe Certificate number 2148, for the Metrohm 7A501C. This approved the instrument as suitable for use as an insulation tester in gases and vapours classified as 2a and 2c in Table I of BS 1259:1958. ¨Intrinsically Safe¨ was permitted to be applied to the instrument, as defined in BS 1259:1958. In the last 38 years there have been no accidents reported attributable to the use of a 7A501C in explosive atmospheres. Martindale Electric Co Ltd acquired the product and all associated rights in 2003. In order to preserve the relevance of the certification, Martindale Electric adheres to the same parts listings and construction techniques as those used by Edgcumbe in manufacture of the 7A501C. Copies of I.S. Certificate 2148 are available upon customer request. It should be noted that B.S.1259 was superceded by B.S.5501-9:1982 and more recently by both BS EN 50014:1998 and BS EN 50020:2002. In addition, the ATEX 94 Directive now applies in certain countries to equipment used in explosive atmospheres and places a different interpretation on the term ¨Intrinsically Safe¨. The 7A501C will not comply with the ATEX 94 Directive and is marked to this effect. We now supply the 7A501C as a Safety Insulation Tester. Ongoing use of existing 7A501C testers in explosive atmospheres is permitted up to July 2006, but new purchases should be ATEX 94 compliant, if they are to be used where ATEX 94 applies. To our knowledge, there is no ATEX 94 compliant insulation tester available. In an environment where ATEX 94 applies, the purchase of a new 7A501C to carry out essential electrical safety tests should be subject to a risk analysis by the site safety officer. Service replacements of key modules in existing instruments remains permitted. For environments where the ATEX 94 Directive does not apply, the original certification and ¨Intrinsically Safe¨ marking remains valid. E3511- High Voltage Insulation Tester Having both battery and mains operation and four selectable DC test voltages (500V, l kV, 2.5kV & 5kV), this tester measures insulation resistance from 100kOhm to 100GOhm. The large, clear analogue scale also displays AC or DC voltage up to 1000V. Latching test switch allows hands free testing. With full over-voltage and over-current protection for measurements and 8 hours operation from rechargeable Nicad batteries, the E3511 comes complete in a rugged carry case. Standard accessories include locking 2m test leads with prods and clips. Insulation Resistance Range: 100kOhm to 100GOhm accuracy ±1.5% of scale length. Voltage Range: 1000V AC or DC ±1.5% of scale length. Test Voltage: 500V, l kV, 2.5kV, 5kV DC ± 5% at 10MOhm. Battery Operation: 8 hours typical. Supply/Charger (built in) : 110V / 230V AC. Weight: 3.5kg. Dimensions: 330 x 263 x 144mm. E3640- 4kV Flash Tester The E3640 digital flash tester is a portable mains operated instrument, capable of operating from either 115V or 230V at 50/60Hz. it can apply up to 4kV AC and displays both output voltage and leakage current on the twin 31/2 digit LCD's. The fail lamp illuminates and the buzzer sounds in the chosen modes: Breakdown - fast transients can trigger the trip; Burn - where the trip function is bypassed and the fault current flows continuously to expose the fault; Hold shows the breakdown voltage and the leakage current. Power: 230V AC ± 15% 50/60Hz 115V AC ± 15% 50/60Hz Output: 0 - 4kV, 50/60Hz -0%, +5% Trip Level: 0.3 - 3mA ± 5% fsd Trip Response: Will trip for fault duration >5ms but not for <100µs Voltage Output: 0 to 4kV ± 2% rdg Leakage current: 0 to 3mA ± 2% rdg Dimensions: 330 x 263 x 144mm E1610 Earth-Ground Tester The Metrohm E1610 is a very handy, easily portable and simple to use earth tester. Large liquid crystal display shows earth/ground resistance and continuity. Can measure soil resistivity using four wire test system. Requires earth spike kit Vital for very low resistance testing. Ranges: 0 to 20Ohm in steps of 0.01Ohms 0 to 200Ohms in steps of 0.1Ohms 0 to 2000Ohms in steps of 1Ohm. Accuracy: 2% of reading ±2 digit. Test Current: 10mA AC RMS nominal on 20Ohm range, 1 mA AC RMS nominal on 200Ohm range & 0.1 mA AC RMS nominal on 2000Ohm range. Test frequency of 128Hz avoids mains / harmonics interference. Includes: soft carry case, batteries, instructions. Please ask for details on the Metrohm range of Instruments.