Newtons4th Ltd-SLM3505

Selective Level Meter

 

Portable Selective Level Meter with integrated Signal Generator

Selective Level Meter: The SLM3505 was designed to provide a single instrument solution for the Electric Utility System Protection Engineer and Relay/Communications Technician responsible for the alignment and maintenance of Power Line Carrier, Audio Tone and FSK Communications Systems. This multifunction instrument replaces all 4 existing Power Line Carrier Instruments in one for a fraction of the cost, all in a compact lightweight package.

  • Instrument Functions
    • Single and Dual Frequency Selective Level Meter
    • Impedance Analyzer (LCR Measurements)
    • Frequency Response Analyzer
    • VSWR Meter
    • Signal Generator
    • Oscilloscope
  • Applications
    • Power Line Carrier Alignment & Maintenance
    • Line Trap Alignment & Test
    • Line Tuner Alignment & Test
    • PLC Transmitter & Receiver Test & Set-up
    • Audio Tone Protective Relay Channel Test & Set-up
    • FSK Telemetry Testing
Newtons4th Ltd-SLM3505

Newtons4th Ltd-SLM3505 Selective Level Meter

 

Newtons4th Ltd (N4L), established in 1997 and headquartered in Leicester, UK, specializes in designing, manufacturing, and supporting innovative electronic test instrumentation for a global market.

The company offers a comprehensive range of products, including:

  • Power Analyzers: Utilizing advanced signal processing technology, N4L’s power analyzers provide fast, accurate, and repeatable measurements for applications such as variable frequency drives, power transformers, and power supply design.
  • Frequency Response Analyzers: Designed for applications like control loop and frequency response analysis, these analyzers cover a wide frequency range and offer precise measurements.
  • Impedance Analyzers: Suitable for electronic circuit design and test, as well as biological and electrochemical analysis, these instruments measure impedance across various frequencies.
  • IEC61000 EMC Test Systems: These systems assist in standards compliance testing, including harmonics and flicker analysis.
  • AC+DC Power Sources / Amplifiers: Providing programmable power sources for applications such as avionics and power transformer testing.
  • Selective Level Meters: Used for power-line communication testing and other selective level measurements.

N4L operates an ISO17025 accredited calibration laboratory, ensuring high standards in voltage, current, phase, power, harmonics, and flicker measurements.

The company’s products are utilized in various sectors, including:

  • Variable Frequency Drives & Motors
  • Power Transformers & Distribution
  • Power Supply Design and Test
  • Standards Compliance
  • Avionics
  • Control Loop and Frequency Response
  • Electronics Circuit Design and Test
  • Biological and Electrochemical Analysis
  • Electronic Components
  • Selective Level and Power-Line Communication Testing

N4L’s commitment to innovation and quality has established it as a trusted provider of electronic test instrumentation worldwide.

SELECTIVE LEVEL METER
Frequency range 5Hz to 5MHz
Frequency accuracy ±5ppm over all temperature range
High Accuracy Option F <±2ppm  over all
temperature range
Magnitude accuracy <1KHz: 0.05% rng + 0.05% rdg + 50uV. <10KHz: 0.05%rng+0.05% rdg +0.01%/KHz + 50uV.
<5MHz:  0.05%rng+0.25%rdg +0.001%/KHz + 50uV
Inputs (Unbalanced)Type &Connection differentially isolated & isolated BNC
Bandwidth settings 3, 25, 100,  1.95k, 3.1kHz & wideband
Measurement Units V, dBm, dBu, dB0 (Traditionally referred to as dB in PLCC applications)
Accuracy of Level Measurement at 0dB(m) ± 0.3 dB(m)
High voltage input
Max input ±300V peak
Input impedance 1MΩ ±5% // 30pF
50ê­¥ input
Max input 10W (28V rms)
Input impedance 75Ω ±1% // 30pF
Low Level Input
Max input ±10V peak
Input impedance 50Ω ±1% // 30pF - 75Ω ±1% // 30pF - 600Ω ±1% // 30pF - 1MΩ ±5% // 30pF
Input (Balanced)
Max input ±10V peak
Input impedance As Low level input
Input type differential
Input connection 3 x 4mm connectors - positive, negative, and ground

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