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
2-wire Extended distance.
Network modules: NSW-024C (2-ch type)
2-wire Extended distance.
Network modules: NSW-01VB, NSW-01TB, NSW-01C
2-wire Extended distance.
Network modules: NSW-01VB, NSW-01TB
4-wire Extended distance.
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.
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)
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.
Features
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
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
Scanning measurement, Monitoring measurement, Module checking function, ID checking function, Reading transducer information (CAP, RO), 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
*1: When 2-channel modules (NSW-024C and NKB-MD) are used, the maximum number of channel is 100. 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.
Features
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
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.
Either 120 Ω or 350 Ω (to be specified when ordering)
Measuring range
±30000 x 10-6strain
Dimensions
50(W) x 20(H) x 100(D) mm
Weight
Approx. 250 g
Network Module Strain Full Bridge Module NSW-014C
This is a low comsumption module dedicated to full bridge connection including strain gauge based transducer. The extension distance and number of connection are improved compared to conventional modules.
This is a conventional module dedicated to pulse counting of non-voltage contact or open collector input. It is used for measuring rain gauge, flow meter, frequency of traffics and machine operation, and so on.
This is a strain gauge based transducer with a built-in network module. It is connected to a network driver NDR-100, and the NDR-100 is connected to a data logger for data transmission. Connection between the transducer and the NDR-100 is available using an exclusive two-core cable since the data transmission is made in degital form. Additional TML-NET compatible transducers can be cascaded using the two-core cable.
Features
Bulit-in digital conversion module for TML-NET
Not influenced by lowering of insulation resistance and no sensitivity decrease
Easy wiring
Insulation check feature
System Block Diagram
Thunder proof for TML-NET NNZ-2A
Protects network measuring system TML-NET from induced lighting. In lighting-prone areas, the induced voltage of lighting traveling through the cables of measuring instruments or network modules can damage network drivers and network modules on the network.
When this unit is connected at both ends of the extended network line, it automatically separates the network line when instruments enter standby, to block induced current on the line from lighting and protect networked drivers and modules.
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
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
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.
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.
For more detailed technical parameters, please consult Earth Products China!
Enquiry:hkmarketing@epc.com.hk
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