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TML-NET is our original data acquisition network to perform measurement control and data transfer as well as power supply using two-wire cable. Commands and data are transferred on the network with clock signal, and bidirectional communication is possible. Network modules are placed near sensors such as strain gauge, DC voltage source and thermocouple, and measured data are converted into digital form by the network mudules. The network modules transmit those digitized data through the network, and the data are received by a data logger via a network driver which is connected to the network. It is also possible that a PC to directly receive data from the network by connecting a network interface to the network. Unlike ordinary analog measurement system, there is no sensitivity drop due to influence of cable extension and insulation lowering. Therefore, long term stable measurement is acheived. The TML-NET is also available in 4-wire system, in which two wires are used for data transfer while another two wires are used for power supply. In addition, the use of a network handheld strainmeter makes on-site data acquisition and checking possible.
Features
- Easy connection and branching
- Network module is small and light - Easy to install
- No sensitivity drop due to cable extension
- Resistive to noise owing to digital processing near sensors
- No influence of insulation lowering
- Total extension distance is within 2km between data logger and NDR-100
- Total extension distance is within 2km between NDR-100 and network module
- Combination available with external switching boxes - Electrically isolated between instruments
Specifications
TML-NET (network part) specifications
| Communication System (2-wire, 4-wire) | |
|---|---|
| Transmission | 2-wire (4 wire) bidirectional serial transfer |
| Number of connection | Up to 100 module for one system, 1000 measurement points at the maximum |
| Standard Cable | Exclusive 2-core shielded cable (2-1.125L1) |
| Total extension distance | 2 km or less for one system (see below) |
| Measurement time | 200 msec / 1 measurement point (including transfer time) |
| Loop connection | Possible |
| Terminator | Not required |
Network modules: NSW-011C, NSW-014C
Network modules: NSW-024C (2-ch type)
Network modules: NSW-01VB, NSW-01TB, NSW-01C
Network modules: NSW-01VB, NSW-01TB
Dedicated shielded cables used 2-wire method: 1 4-wire method: 2
Network Module
Counter Module NSW-01CC
A
module that counts precipitation, flow rate, quantity, number of vehicles that
pass by, frequency of machine operation, and other information with no-voltage
contact or open collector input.
A built-in backup battery allows to continue counting even when the power
supply is not available.
|
Type |
NSW-01CC |
|
Measured object |
Precipitation meter, etc. |
|
Number of measurement point |
1 point |
|
Measurement time |
200 ms/point (including transfer time) |
|
Programmable item |
Channel number (000-999) |
|
Input signal |
Non-voltage contact / Open collector signal Square Wave |
|
Responding pulse width |
0.01 sec or more |
|
Measuring range |
0 ～ 31999 counts |
|
Measurement data |
Accumulated counts |
|
Reset |
At power on / Full count / External rese |
|
Back up |
Alkaline AA dry batteries x 3 pcs. Approx. 3 months |
|
Dimensions |
95（W）×35（H）×100（D）mm |
|
Weight |
Approx. 250 g (Alkaline AA dry batteries x 3 pcs. 70 g not included) |
Note: The counter module NSW-01CC is not a low-consumption type, but four units of NSW-01CC can be connected when 100 units are connected, and the total length is 2,000 m.
*Connection of four units and more is possible depending on the conditions.
Network driver NDR-100
NDR-100 is a network module driving interface. It connects to the ASW/SSW converter box extension cable system, and the converter box connects to the TDS data recorder.
System Block Diagram
In case of 4-wire connection, two exclusive 2-core cables should be used.
Specifications
Type
NDR-100
Number of connection
100 modules for one NDR-100 (1000 measurement points at the maximum)
Applicable data logger
TDS-630, TDS-530, TDS-602, TDS-303, TDS-540-01/-03
TML-NET connection
Terminal blocks
Features
Converts 3-wire signal into 2-wire signal.
Supplies power source to network modules
Dimensions
160(W) x 60(H) x 120(D) mm (except projecting parts)
Power source
When AC power source is supplied: AC85-250 V 50Hz/60 Hz 90 VA max.
Network Interface NIF-100
The NIF-100 is a driver interface used to drive each network module directly from a personal computer, without using a data logger.
Features:
Directly drives network modules via the built-in RS-232C interface through a computer
One NIF-100 can connect 100 modules
-
The maximum usable distance between the farthest network module and the NIF-100 is 2km
-
Compatible with Visual LOG TDS-7130v2 static measurement software
System Block Diagram
In case of 4-wire connection, two exclusive 2-core cables should be used.
Specifications
Type
NIF-100
Number of connection
100 modules
Function
Converts RS-232C interface into 2-wire Signal
Supplies power source to network modules
Dimensions
235(W) x 50(H) x 160(D) mm (except projecting parts)
Weight
Approx. 1.2 kg
Power source
When AC power source is supplied: AC85-250 V 50/60 Hz 90 VA max.
Network Handheld Strainmeter TC-35N
The TC-35N is a handheld instrument which captures and processes the digitized strain data from network modules. It can be used for checking the system on site and/or constructing a small measurement system.
By adopting low-consumption type network modules, number of connectable modules and extending distance of modules are enlarged drastically and construction of a comparatively larger measurement system is easily enabled.
- Small, light and easy to carry
- 4 pieces of AA(LR6) battery operation - Easy battery exchange on site
- Drip proof construction
- Built-in deta memory
- Compact Flash Card can be used
- Built-in interval timer
- Control and data transmission by RS-232C interface
- Automatic measurement with sleep interval function
- Use of external DC power supply available
System Block Diagram
Specifications
Scanning measurement, Monitoring measurement, Module checking function, ID checking function, Reading transducer information (CAP, RO),
*1: When 2-channel modules (NSW-024C and NKB-MD) are used, the maximum number of channel is 100.
Type
TC-35N
Maximum number of connection
Conventional module
5 modules (when using internal AA batteries or AC adaptor)
100 modules (when using external DC power source; 200m or less for 2-wire conection)
Low-comsumption module
50 modules (when using internal AA batteries or AC adaptor)
100 modules *1 (when using external DC power source; 2km or less for 2-wire connection)
Maximum extension distance
Conventional module
50m (when using internal AA batteries or AC adaptor)
2km (when using external DC power source; 15 modules or less for 2-wire connection)
Low-comsumption module
50m (when using internal AA batteries or AC adaptor)
2km (when using external DC power source; 100 modules or less for 2-wire connection)
Applicable transducer
Conforms to network module
Data acquisition speed
Approx. 0.2sec/ch in scanning measurement
Function
Setting channel of network module
Dimensions
102(W) x 55(H) x 223(D)mm
Weight
Approx. 850g
Power source
Alkaline dry battery LR6×4 or Dedicated AC adaptor
Note: When conventional module and low-comsumption module are used together, the specifications follow those for conventional module.
Network Measurement System
Monitoring System Controller MD-111
The monitoring system makes flexible use of TML-NET measurement system. The system consists of controller, network modules and TML-NET compatible transducers. The controller MD-111 controls the network modules and the transducers at specified intervals and stores measurement data in SD card. It is suitable for installation in an instrument storage box or cabinet, and is equipped with input/output contacts. Accordingly, it is most suited for making a measurement system of small scale.
- Automatic measurement by sleep interval function
- Driven by DC power source
- Small, light and available for installation on DIN rail
- Number of measurement point can be extended easily
- Measurement data are stored in SD card
- Alarm via contact output
System Block Diagram
(Available when connecting only one module)
(The starting time of measurement can be specified)
DC9 to 18V
Network Module
Strain Quarter Bridge Module NSW-011C
This is a low consumption module dedicated to quarter bridge 3-wire connection. The extension distance and number of connection are improved compared to conventional modules.
±30000 x 10-6 strain
