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        Learn more by watching our Major Tech MT993 | Loop Calibrator PLC Testing video.

        Major Tech MT993 | Loop Calibrator PLC Testing

        The Major Tech MT993 is a versatile loop calibrator and signal generator, perfect for PLC debugging, process instrumentation, and valve testing. It can source and measure voltage (0-24V), current (0-24mA), and frequency (0-9999Hz), making it a must-have tool for industrial applications. With dual independent channels, users can measure and source different signals simultaneously, improving efficiency on the job.

        Its 2.4-inch high-definition TFT LCD, with adjustable backlighting, provides clear readings in any environment. The real-time curve display tracks signal changes over time, while the PWM output function allows for independent frequency and duty cycle adjustments. Powered by a 3000mAh rechargeable lithium battery, it delivers up to 26 hours of standby time, making it ideal for fieldwork.

        Major Tech MT993 Features:

        • Multifunction loop calibrator – Measures and sources voltage, current, and frequency signals.
        • Dual-channel operation – Enables simultaneous measurement and output.
        • Real-time curve display – Tracks voltage and current variations over time.
        • High-precision measurement – Provides ±0.1% accuracy for voltage and current readings.
        • PWM output function – Allows independent control of frequency and duty cycle.
        • 2.4” TFT LCD with backlight – Ensures clear data visibility in any lighting condition.
        • Long battery life – 3000mAh lithium battery supports up to 26 hours of standby time.
        • Compact & portable design – Small enough for easy carrying and on-the-go use.

        MT993 FAQ:

        Q: What signals can this calibrator measure and source?
        A: It supports voltage (0-24V), current (0-24mA), and frequency (0-9999Hz).

        Q: Does it support real-time monitoring?
        A: Yes, the real-time curve display allows users to monitor voltage and current changes over time.

        Q: How long does the battery last?
        A: The built-in 3000mAh lithium battery provides up to 26 hours of standby time and 8-10 hours of continuous use at 20mA output.

        (MT993)

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.

        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.

        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 2 Year
        Commercial Use: 2 Year
        Warranty Method: Return to Sparky Direct

        All Major Tech Meters sold through Sparky Direct are covered by the manufacturer’s warranty. If you believe your meter is faulty or defective, you may request an assessment under this warranty policy.

        How to Lodge a Warranty Claim

        To initiate a warranty claim:

        1. Return to Sparky Direct
          Ship the meter back to Sparky Direct along with:

          • A copy of your proof of purchase
          • A brief description of the issue
          • Your contact details

          Please ensure the unit is securely packaged to prevent damage in transit.

        2. Forwarded for Assessment
          Upon receiving your meter, we will forward it to Major Tech’s authorised service centre for inspection, testing, and calibration.

        Assessment Process

        Major Tech’s service lab will assess the returned unit to determine:

        • Whether the fault is due to a manufacturer’s defect (covered under warranty), or
        • If the issue is the result of user error or no fault is found.

        Outcomes

        • If approved under warranty: The product will be repaired or replaced at no cost to you.
        • If not covered under warranty: The lab may offer repair services, which will be quoted and billed directly to you by the service provider.

        Important Notes

        As Major Tech’s service labs are independent providers, Sparky Direct cannot govern or guarantee turnaround times or any costs incurred for repairs outside of warranty coverage.

        Please allow up to 7-14 working days for the return of your product.

        Function Range Precision Resolution
        Active Current Output 0 - 24mA ±(0.1%+0.005) 0.01mA
        Passive Current Output 0 - 24mA ±(0.1%+0.005) 0.01mA
        Voltage Output 0 - 24V ±(0.1%+0.005) 0.01V
        24V Loop 0 - 24mA ±(0.1%+0.005) 0.01mA
        Frequency Output 0 - 9999Hz ±(2%) 5 digits
        Current Input 0 - 24mA ±(0.1%+0.005) 0.01mA
        Voltage Input 0 - 30V ±(0.1%+0.005) 0.01V
        Dimensions 112 x 82 x 27mm
        Weight 165g

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Major Tech
        SKU MT993
        Barcode # 6008229040979
        Package Weight 0.470kg
        Package Width 0.150m
        Package Height 0.095m
        Package Length 0.155m
        View Datasheet
        View Manual
        TYPE VALUE
        Type Earth/Loop/PSC Testers
        Brand Major Tech
        Maximum Load 750Ω
        Output Voltage 0 - 24V
        Dimensions 112 x 82 x 27mm
        Battery 3000mAh Rechargable
        Weight 165g
        Output Current 0 - 24mA
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