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Dilog DL9118 Multifunction Tester

  • Boasts a wide range of advanced measurement features
  • Results conveyed to the operator via large LCD screen
  • Supplied with neck harness, remote probe and hard carry case

rrp £1,149.00

now £474.00 (Ex. VAT) £568.80 (Inc. VAT)

rrp £1,149.00

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  • Description

    Dilog DL9118 Multifunction Installation Tester

    The British-made Dilog DL9118 Multifunction Tester is a 18th edition multifunction tester which performs a whole range of tests including those for insulation resistance, loop impedance, prospective short circuit current, continuity, RCD trip current/times, phase rotation and socket polarity. These functions are supplemented by a range of advanced features that are now widely considered as standard on contemporary MFTs.

    Firstly, the unique RCD-LOC XLT non-trip loop test does provides a very accurate test result without the risk of tripping RCDs whilst the instrument’s auto-start function saves time without compromising accuracy. High current loop and line impedance testing adds another option in this important system test. Auto-start is also available for the PSCC test which has a direct readout to quickly determine whether protective devices meet the required standards.

    Continuity testing is another string to the Dilog DL9118’s bow and boasts a null function to negate the effects of lead resistance alongside auto-start. For RCDs, the device can be used to check both trip time and trip current with sophisticated methods such as auto-testing and ramp current for improved speed and accuracy. Insulation resistance measurement is available with test voltages of 250V, 500V and 1000V whilst the voltage and frequency measurement adds more detail to the user’s picture of system performance. Phase rotation indication and socket polarity testing complete a comprehensive list of test functions.

    Results are shown to the operator via the Dilog DL9118’s large LCD screen which offers dynamic, clear presentation of the instrument’s findings. A remote probe is included with the device and operation is made easier by a handy neck harness that allows hands-free use and easy function selection. Furthermore, the device is fully protected against potential damage caused by inadvertent connection cross phases, thereby safeguarding the user’s investment, and a 2-year warranty provides further peace of mind.

    This sophisticated, accurate MFT comes in a handy toolbox-style carry case and is supplied with everything needed to carry out tests, such as test leads and crocodile clips, as well as meeting the standards for BS EN 61557 and EN61010.

    Dilog part number: DL9118

    Key Features

    • No-trip RCD-LOC XLT loop testing
    • High current loop and line testing
    • Prospective short circuit current testing
    • RCD testing for current and speed
    • Phase rotation test
    • Socket polarity test
    • Continuity test with lead resistance compensation
    • Insulation resistance test with test voltages of 250V, 500V and 1000V
    • Voltage and frequency measurement
    • Protected from unintentional cross phase connection
    • Large LCD screen
    • Meets BS EN 61557 and EN61010
    • Neck harness for hands-free use
    • Supplied with remote probe, hard carry case and more
    • 2 year warranty
    Continuity Test
    Insulation Test 250V, 500V 250V, 500V, 1000V
    Auto Start Loop & Continuity
    RCD Test (AC, A, S-type)
    Colour RGB display
    Colour change indicates error
    Auto RCD Test
    RCD Ramp Test
    Loop Test (3-wire no-trip)
    PFC and PSC Fault Current(L-PE/L-N)
    Phase-Phase Line Test (L-L)  
    Phase Rotation  
    Remote Probe  
    Intelligent Full Range Protection
    Full calibration certificate
  • Specification


    • Range: 0V to 440V
    • Accuracy: +/- 5% +/- 2digits from 0 to 100Hz
    • Resolution: 1V


    • Range: 0.01Ω to 200Ω
    • Accuracy: +/- 2% +/- 5 digits
    • Resolution 0.01Ω to 1.99Ω; 2.0Ω to 19.9Ω; 20Ω to 200Ω
    • Test Voltage: >4Vdc >25Vdc Open Circuit
    • Test Current: >200mA
    • 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: 250V/500V/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: 0.01Ω 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 Measurement

    • Range: 1A to 26kA
    • Accuracy: +/-5% +/-5 digits
    • Range 1A to 999A; 1kA to 26kA

    High Current Line 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 Voltage: Phase to Neutral 190V to 260V; Phase to Phase 328V to 440V
    • Test Current: 3.5A Peak

    Line Test PSC Measurement

    • Range: 1A to 26kA
    • Accuracy: +/-5% +/-5 digits
    • Range: 1A to 999A; 1kA to 26kA

    RCD Trip Time Test

    • Range 0ms to 2000ms
    • Accuracy +/-5% +/-2 digits
    • Range: 0 to 2000ms ½ 1x; 0 to 300ms 1x general (500ms selective); 0 to 40ms 5x
    • Test Current: 10mA/30mA/100mA ( ½ , 1x, 5x current); 300mA/500mA ( ½, 1x current)
    • Compliance: IEC61557-6 and IEC61557-10

    RCD Trip Current Test

    • Range: 0.5 I∆n to 1.1 I∆n
    • Accuracy: +/-5% of expected current
    • Step Size: 0.1*∆n
    • Step duration: 300ms
    • Compliance: IEC61557-6 and 61557-10
  • Supplied Accessories

    • Dilog DL9118 Multifunction Tester
    • Padded neck strap
    • Professional carry case
    • DI-LOG mains lead
    • 1.2 M black test lead
    • 1.2 M red test lead
    • 1.2 M green test lead
    • Black crocodile clip
    • Red crocodile clip
    • Green crocodile clip
    • Remote probe with test button
    • MN1500 (AA) 1.5v Batteries x 6
    • DL9118 Operating Instruction Manual
    • Calibration certificate
  • Product Questions

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  • Reviews

    Review by Rustytin (Posted on 25/09/2018)
    I have purchased this model myself after looking at the other multifunction testers and realising that brand names mean a lot to people but this model shows that name is not everything.

    Functionality is exceptional, and the dials are easy enough to follow.

    Having the full automatic rcd test is a great functional so you can set the machine and keep resetting the end and then record all your results at once.

    If you also get your machine calibrated through Dilog you can also extend the 2 year warranty to 3 years.

    I would recommend anyone looking for a new machine for a great price do not discount this machine.

    Review by Paul (Posted on 13/12/2017)
    I have used most of the usual brands. Came across this tester when considering purchasing a new MFT. I think it is a brilliant tester. It has many of features of top end testers. The loop is test is both quick and accurate. I like the ability to to carry out auto tests on many of the functions and lock the meter in auto or manual test.
    With a saving of £250 against equivalent top brands. Its a great value machine. and the fact that it is made in UK is a real plus.
    Review by Sparky Mark (Posted on 19/04/2017)
    Decided to purchase this Dilog after seeing it reviewed in Professional Electrician magazine. I'm glad I did as the tester has proved to be a valuable replacement for my older model. The loop test is very fast and readings are stable which is what my old tester failed on. The tester comes in a really handy carry case with storage room for all the leads. Highly recommend A++

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    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

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