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Metrohm 7A501C Safety Insulation Tester

£875.00 (Delivery from £8.00)
( £1,050.00 inc. VAT)
Item in Stock  |  Usually dispatched within 24 hours
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Martindale 7A501C Product Description…
The Metrohm 7A501C safety insulation tester, originally designed for use in hazardous areas - such as mines and petrol sites. With the introduction of the new ATEX regulations, the item no longer meets requirements for intrinsically safe products, however this product has been in active service for 45 years in hazardous areas.

There are no other testers of this kind on the market, that we know of, which fully meet ATEX requirements, therefore the use of this tester should be decided upon by a suitably qualified and knowledgeable person. Whilst this tester does not qualify for ATEX approval, safety officers should evaluate the risks of failing to perform adequate electrical safety testing. Below are the details of the availability and compliance statements issued after the changeover from Intrinsically Safe to ATEX regulations. As such this product is only available for sale where the intended use is outside the EU.

The 7A501C is supplied with test leads, carry case, battery and safety tool to remove battery cover.

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It should be noted that B.S.1259 was superseded by B.S.5501-9:1982 and more recently by both BS EN 50014:1998 and BS EN 50020:2002.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 replacement 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.

Metrohm 7A501C Availability Statement - April 2006

A detailed technical review of the Metrohm 7A501C has resulted in the decision to withdraw it from sale in the EU.

However, non compliance with ATEX 94 prevents CE marking, as there is a relevant directive with which the product does not comply.


Accordingly, the product is now only available for sale where the intended place of use is outside the EU.

Please see data sheet for full product specification.

If you have any problems or complaints of any nature please do not hesitate to contact us. Our staff will be more than happy to assist you and we guarantee a polite response and speedy resolution to all matters.

Upon Clearance of full payment, and subject to availability and price checking, the ordered goods will be dispatched to the address quoted by the customer. We accept no liability for undelivered or mis-delivered items due to the customer supplying the incorrect delivery details.

Delivery Dates are given as accurately as possible but are not guaranteed. Under no circumstances will late delivery entitle the purchaser to reject the contract or to claim damages.

Customers will receive an email advising expected delivery dates, for such products.

If upon cancelling an order after it has been processed and/or dispatched a restocking fee may be charged.

All products bought/hired from this website will be bought/hired; Ex-Works, for alternative delivery methods, please contact our Guisborough office on Telephone: +44 (0) 1287 204020 or by email at:

We accept no liability for any damage or loss incurred by the customer or a third party due to carriage/delivery, late delivery, non delivery or any other circumstances no matter how such loss or damage was caused.

Goods remain the property of Euremica Limited until payment has been received in full. (This excludes hire items)

We understand that from time to time you may wish to return a product to us.
We have created this 14 day returns policy to enable you to return the products to us.

If you are in any way dissatisfied with the product you receive upon delivery we will be happy to exchange it for something more suitable, In order to take advantage of your rights under this returns policy. Please complete the following steps:

- You must Contact our Guisborough office, in writing, within 48 hours of delivery of the goods; Via Post; Euremica limited, Instrument House, Morgan Drive, Guisborough, Cleveland, TS14 7DG; or by email at:, giving full details of:
-  Reason for return (Listing any damages if any)
- Contact details to enable Euremica to Contact you, to arrange collections/replacements (if required)

- Goods must be returned back to Euremica within 14 days of delivery. (Don’t forget to include your goods returns note, so we can identify where the parcel has come from). Postage, re-stocking fees and/or suitable hire charges (if applicable) will be at the customers cost.

- Goods must be returned; unused, and in original packing.

- Goods will be inspected by Euremica Staff. If the goods are found to be damaged/unsuitable for resale, the cost of repair/replacement shall belong to the purchaser.

- Once inspected, instructions will be given to the customer outlining the relevant course of action (i.e.: replacement, repair, refund, new delivery dates etc).

-  If we are at fault in delivering your goods, for instance we dispatch the wrong item; we will resolve the problem as fast as is possible and cover all subsequent costs.

The following kinds of products may not be returned under this policy:
- Any products liable to deteriorate or perish subject to shelf life (i.e. gas sensors, - ALL hire items. Please refer to instructions listed in our terms & conditions of hire, and any subsequent delivery notes.

We will give you a refund for the full price of any product properly returned by you in accordance with the terms of this returns policy excluding the original delivery charges and excluding the costs of returning the product to us).

Refunds will not be made until all merchandise is received back into Euremica in Good condition.

Where you return a product in contravention of this policy (and where you do not - We will not refund or exchange the product.
- We may retain the returned product until you pay to us such additional amount as we may charge for re-delivery of the returned product.