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Dilog DL9118 18th Edition Multifunction Tester

FREE Gift The all new Dilog DL9118 17th Edition Multifunction Tester. It's RCD-LOC XLT feature allowins loop testing without tripping any type of RCD/RCBO with very high accuracy.

Important Calibration Information

This instrument comes with a manufacturers calibration certificate.
Please see 'Calibration Options' in the description for more details.

Next Day Delivery (subject to availability)

£469.00 excluding VAT £562.80 including VAT @ 20% Regular Price: £1,378.80
  • Manufacturer Certificate Included
  • Phase Rotation Service
  • Earth Testing
  • Auto RCD
  • Backlit LCD Display
  • Non Trip Loop Testing
  • Memory Function
  • FreeDelivery
  • 30DayMoneyBack
Required Fields
  • Description
  • Features & Specification
  • Resources
  • Delivery

Free Gifts

This instrument comes complete with your choice of free gift from the drop-down menu above. Choose from a calibration voucher for next 
year or a 50m R2 wander lead. How about any one of the IET Guidance Notes, or a quality two-pole tester? 
Whatever you choose you can be sure you're getting a fantastic deal at Instrument Sales & Service.

DiLog DL9118 17th Edition Multifunction Tester

Test continuity, voltage, insulation, high and low current loop impedance, phase rotation, PFC loop tests, RCD trip time and current tests and loop impedance all in one unit.

The ALL NEW Di-Log DL9118 multifunction tester has been designed to fully comply with the testing requirements of the 17th Edition. It also incorporates many of the features that we have come to expect with modern MFTs. It is designed to be worn around the neck with a comfortable harness, for easy function selecting and testing.

The All NEW RCD-LOC XLT feature allows loop testing without tripping any type of RCD or RCBO with very high accuracy. The DL9118 is also packed full of features, such as a Remote Test Probe, Auto Start Loop & Continuity, colour changing LCD display indicating error, and comes complete with a toolbox style carry case.  All in all, the DL9118 offers incredible value for a feature packed MFT meeting all the safety and performance requirements of BS EN 61557.

*Important Calibration Information:

This instrument comes complete with the manufacturers dated calibration certificate. Please be aware that these certificates are generic and may also be time lapsed. If you would prefer a personalised full traceable calibration certificate applied to the equipment before dispatch, then please select this option from the drop-down menu above, an additional calibration charge will apply.


Di-Log DL9118 Comes Supplied With:

  • Rugged Carry Case
  • Manufacturers Certificate
  • Remote Probe
  • Set of Shielded Test leads with Crocodile Clips
  • Shielded AC Power Cord


Key Features:

  • Loop Impedance – Unique auto start RCD-LOC XLT loop test principle will not trip any RCD
  • Prospective short circuit current – with auto start and direct readout of PSCC
  • High Current Loop Test – auto start loop test with high current Ze measurement
  • Phase Rotation Test – will indicate the correct phase sequence
  • Continuity test – with auto start & null facility to zero out lead resistance
  • RCD testing – Trip time, trip current, auto test and ramp current
  • RCD auto test – test RCDs in auto mode and simply recall the test results once finished
  • Insulation measurement – with 250, 500 & 1000V test voltages
  • Integrated socket polarity test
  • Fully protected against damage when accidentally connected across phases

About Di-Log

Di-Log Test Equipment offers a comprehensive range of test equipment from a voltage indicator to 18th Edition and Thermal Imaging to portable  appliance testing kits. All Di-Log instruments are designed and manufactured to the highest quality specification and you can be assured that all manufacturing processes adhere to internationally recognised standards.  Di-Log instruments are accurate, safe and rugged – you won’t find a better balance between cost and fitness for purpose.


DiLog DL9118 17th Edition Multifunction Tester
Range 0 to 440V
Accuracy ±5% ±2 digits from 0 to 100Hz
Resolution 1V
Range 0.01 to 200Ω
Accuracy ±2% ±5 digits
Resolution 0.01 to 1.99Ω
2.0 to 19.9Ω
20 to 200Ω
Test Voltage >4V DC >25V DC Open circuit
Compliance IEC61557-4 and IEC61557-10
Range 0.05MΩ to 200MΩ
Accuracy ±5% ±5 digits
Resolution 0.01MΩ to 1.99MΩ
2.0MΩ to 19.9MΩ
20MΩ to 200MΩ
Test Voltage 250, 500 and 1000V
Test Current 1mA
Compliance IEC61557-2 and IEC61557-10
No Trip Loop Impedance
Range 0.01Ω to 2000Ω
Typical Accuracy ±5% ± 12 digits (to 1.99Ω)
±5 digits (to 2000Ω)
Resolution 0.01 to 1.99Ω
2.0Ω to 19.9Ω
20Ω to 2000Ω
Test Current <15mA RMS
High Current Loop Impedance
Range 0.01Ω to 2000Ω
Typical Accuracy ±5% ± 5 digits
Resolution 0.01Ω to 1.99Ω
2.0Ω to 19.9Ω
20Ω to 2000Ω
Test Current 3.5A Peak
Loop Test PFC Measurements
Range 1A to 26Ka
Accuracy ±5% ±5 digits
Range 1A to 999A
1kA to 26kA
High Current Loop Impedance
Range 0.01 to 2000Ω
Typical Accuracy ±5% ±5 digits
Resolution 0.01Ω to 1.99Ω
2.0Ω to 19.9Ω
20Ω to 2000Ω
Test Voltage Phase to neutral 190V to 260V
Phase to phase 328V to 440V
Test Current 3.5A peak
Line Test PSC Measurements
Range 1A to 26kA
Accuracy ±5% ±5 digits
Range 1A to 999A
1kA to 26kA
RCD Trip Time Tests
Range 0ms to 2000ms
Accuracy ±5% ±2 digits
Range 0 to 2000ms 1/2 1x
0 to 300ms 1x general (500ms selective)
0 to 40ms 5x
Test Current 10mA/30mA/100mA (1/2, 1x, 5x current)
300mA/500mA (1/2, 1x current)
Compliance IEC61557-6 and IEC61557-10
RCD Trip Current Tests
Range 0.5I∆n to 1.1I∆n
Accuracy ±5% of expected current
Step Size 0.1I∆n
Step Duration 300ms
Compliance IEC61557-6 and 61557-10

Standard FREE 3-5 Day Courier Delivery – UK Mainland only - Zones A & B
Included in the price for all orders over £40.00 (exc vat). Sent using express courier, delivered within 3-5 working days from the date of your order, subject to availability.

Standard 1-2 Day Express Courier Delivery – UK Mainland only - Zones A & B
£4.50 for all all orders under £40.00 (exc vat). Sent by express courier, delivered within 1-2 working days from the date of your order, subject to availability.

Express Courier 1-2 Day Delivery – UK Mainland only - Zones A & B
£4.50 select at the checkout. Sent using express courier.

Next Day Delivery – UK Mainland only - Zones A & B
£8.00 select at the checkout. Sent using express courier, orders must be placed before 3pm for next day delivery, subject to availability.

Saturday Pre 12am - UK Mainland only - Zones A & B
£15.00 select at the checkout. Sent using express courier, orders must be placed before 3pm for Saturday delivery.

Orders must be placed before 3pm for next day delivery and a telephone number supplied, subject to availability.
Please note that predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope of our dispatch and therefore may incure additional days lead time to your order.

Orders requiring calibration. Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received late afternoon and requiring calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch, this in most cases should not add more than 24 hours to you delivery.

Delivery Surcharges
Because of the high cost of carriage we need to apply a surcharge on all deliveries made in the following regions bringing the carriage charges to:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands. 
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands.
  • Zone E - Northern Ireland
  • Zone F - Republic of Ireland

New Postage Map Sept 2018> 

International delivery

International delivery charges are automatically added to your order at the checkout; you can also use the guide below for a guide on prices. For any questions regarding international deliveries please contact us at

If no shipping option is available to your selected country please call us on +44 (0) 1603 406 148 to purchase your items.