Thunder proof for TML-NET

Thunder proof for TML-NET NNZ-2A

The NNZ-2A is used for protecting TML-NET network measurement system from induced lightning. When the cable of instrument or network-module receives induced lightning, failure may be caused in the network driver and/or network module by the lightning surge. The NNZ-2A is connected to the connection cable of the network, and works to flow the surge current to the earth when induced lightning occurs. In addition, during standby of measurement, it automatically shuts off the network line to protect the network driver and network modules from the lightning surge.

Thunder proof for TML-NET NNZ-2A
Features
  • Shuts off network line automatically during measurement standby status to avoid induced current
  • Power is supplied from network line
  • Monitors voltage of network line and current of network modules, and shuts off immediately if abnormal condition occurs

  • Specifications
    Type NNZ-2A
    Surge tolerance 100A (8/20µs impulse)
    Available number for one system NNZ-2A: up to 10
    Low-comsumption network module: up to 100
    Rated power supply voltage DC18 to 24V
    Standard used cable Dedicated 2-conductor shielded cable
    Total extended distance: up to 2 km (at DC24V power supply voltage)
    up to 1 km (at DC18V power supply voltage)
    Display function Drop of voltage in the network line 
    Over current of network module (Shuts off the network modules at over current)
    Environment -20 to +60°C 85%RH or less (no condensation)
    Dimensions 50(W) x 28(H) x 100(D)mm (except projecting parts)
    Weight Approx. 120g

System Block Diagram

img_nnz2a_03e

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One-side Strain Gauge

DD series One-side strain gaugeCE

These gauges are intended for measuring the bending and tensile strains separately by simply bonding the gauges on one side of a plate or beam. It works on the assumption that the strain distribution in the section of the specimen is linear along the height of the section when the section is subjected to both tensile and bending stress.  The gauges are effectively used for the measurement of a box　construction in structures such as bridges or pressure vessels, where the reverse side of the measurement object is not accessible for strain gauge installation. Optional (-F) lead-free solder specifications are also available.

One-side Strain Gauge
Applicable specimen Metal
Operational temperature(℃) -10 to +70℃
Temperature compensation range(℃) -
Applicable adhesive CN, P-2
Backing Acrylic
Element Cu-Ni
Strain limit 0.15% (1500 x 10-6 strain)
Fatigue life at room temperature 1 x 105 (±1000 x 10-6 strain)

  • ONE-SIDE STRAIN GAUGE

    dd
    Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length a
    (mm)    		 Backing
    width b
    (mm)    		 Backing
    thickness
    c (mm)    		 Resistance
    (Ω)    		 Thickness of
    applicable
    specimen (mm)
    DD-1-15 3 2.9 15 7 1 350 Approx. 5 or less
    DD-2-30 3 2.9 30 7 2 350 Approx. 5 to 10

     

    * Orders accepted for 5 units at a time

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Multi-Recorder Control Unit (TMR-300 Series)

Control unit TMR-311 CE

This works as the central unit of multi-recorder system. It controls, supplies power to and collects data from the connected measurement units. Up to ten measurement units can be controlled for measurement of 80 points at maximum. 

Control unit TMR-311

  • Specifications
    Type TMR-311
    Number of measuring　points 80 at maximum
    (with up to 10 networked units, by selection of input unit)
    Sampling 0.01 to 0.09ms (set by every 0.01ms)
    0.1 to 0.9ms (set by every 0.1ms)
    1 to 1000ms (set by every 1ms)
    512, 1024, 2048, 4096, 8192 Hz
    Trigger function Data trigger Data of optional channel
    (optional input level, or relative level from start)
    Command trigger Command from interface
    Timer trigger Real time, Interval
    Synchronization of multiple units Synchronization of sampling and trigger for up to 4 units of TMR-311 (320 measurement points)
    Maximum extension between two units: 100m
    Recording media SD card 4GB to 32GB (SDHC high speed mode class 10)
    Interface LAN, USB, Wireless LAN (AP mode, IP fixed) *
    *: Built-in wireless LAN is not available for overseas model.
    Indication Status LED (status, IP address, etc.)
    External dimensions 200(W) x 50(H) x 100(D) mm (excluding projected parts)
    Weight Approx. 900g (including rubber protectors)
    Power supply DC 10 to 30V, 0.6A at maximum (when 12V supplied, single unit)
    AC 100 to 240V, 50/60 Hz, 100VA at maximum (when using optional AC adapter CR-1897)

Part Names

Front

TMR-311-Front-side

 

Back

TMR-311-Rear-side

Frequency processing library TMR-311-01 (optional)

This is an optional frequency processing library for the TMR-300 series of multi-recorders. 
It realizes a histogram recording system that digitally processes measurement data according to a preset program and records them as frequency counts. 
Six frequency analysis methods are available: maximum and minimum value method (PEAK/VALLEY), maximum and minimum value method (MAX/MIN), amplitude method (AMP), time method (TIME), level crossing method (LEVEL), and rain flow method (RAIN). 

Features

  • Up to 80 analyses can be performed in low-speed mode with a sampling interval of 1 ms or more
  • Multiple analysis methods can be set up for the same channel

Note

Frequency measurement requires the optional frequency processing library. 
Purchase of the library and opening of its functions are required to use the library. 

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High Endurance Strain Gauge

DSF series High Endurance Strain Gauge

These gauges are designed for fatigue tests, and can reach a fatigue life of over 10 million times at a strain level of ±3000 με. Compared to previously (1 million times at ±1500με), these are gauges of exceptionally high durability.
In aviation and other areas, repeated load tests of large elongation of composite materials are conducted. However, it had been necessary to adhere a new strain gauge frequently as a gauge reached its fatigue life. The DSF series greatly reduces time and cost of adhering gauges.

High Endurance Strain Gauge
Applicable specimen Metal, Composite materials
Operational temperature(°C) -60 to +200°C
Temperature compensation range(°C) -
Applicable adhesive CN, EB-2B, C-1
Backing Polyimide
Element Special alloy
Strain limit 1% (10000×10-6 strain)
Fatigue life at room temperature 1×107 (±3000×10-6 strain)

* Because this strain gauge is not self-temperature-compensated, it is recommended to preliminarily measure thermal output of this strain gauge using a dummy specimen which is made of the same material as the test specimen.

  • High Endurance Strain GaugeCE
    Gauge pattern Type Gauge
    length
    (mm)    		 Gauge
    width
    (mm)    		 Backing
    length
    (mm)    		 Backing
    width
    (mm)    		 Resistance
    (Ω)    		 Gauge factor
    img_dsfla DSFLA-2-350 2 2 8 3.3 350 Approx. 3.5
    DSFLA-5-350 5 2 11 3.2 350 Approx. 3.5

  • Lead wires recommended for DSF series strain gauges (made-to-order)
    Purpose Lead wires Lead wire symbol Operating temperature range
    (℃ )    		 Gauge type exampled
    General measurement (no temperature change) 2-wire parallel vinyl wire LJC －20 to +80 DSFLA-2-350-3LJC
    General measurement 3-wire parallel vinyl wire LJCT －20 to +80 DSFLA-2-350-3LJCT
    Medium/high temperature 3-wire parallel special vinyl wire LXT －20 to +150 DSFLA-2-350-3LXT
    3-strand twisted FEP single-core wire 6FB♦LT －269 to +200 DSFLA-2-350-6FB3LT

    * “♦” indicates lead wire length

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Magnetic field strain gauge

MF series Magnetic field strain gauge

These non-inductive strain gauges are designed for strain measurement in magnetic fields. Two strain gauge elements are overlapped to cancel out electromagnetic induced noise occurring in the gauge, and the twisted lead wire also similarly works to cancel out induced noise. Their structure makes them less sensitive to induced noise from alternating fields.

Applicable specimen Metal, Concrete
Operational temperature(℃) MFLA:-20 to +80℃
Temperature compensation range(℃) -
Applicable adhesive CN, CN-E, RP-2
Backing MFLA:Special plastic
Element Ni-Cr
Strain limit 1% (10000 x 10-6 strain)
Fatigue life at room temperature 1 x 106 (±1500 x 10-6 strain)

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