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| ◢"OSNET" is a trademark of Osashi Tecnos. |
This is a network series for disaster prevention monitoring developed by OSASI Technos.
The Network Series consists of landslide monitoring units and other network capable units developed to perform data gathering and monitoring in mountainous areas where it is not easy to secure a power supply. These units have a network fault detection function that detects, for example, broken transmission cables and faults in units, and are characterized by being able to operate for a long time at low power consumption using lithium batteries or an external power supply.
Up to 64 units can be connected in a network, with up to 1km between units (when shielded twisted pair wires are used, each wire being 0.9mm in diameter). By adding various types of ONET units as necessary, data gathering can be consolidated in an arbitrarily selected location; alarm output can be given; and computer control can be performed from a remote location.
In addition, Network Series units permit preinstalled programs to be upgraded from a remote location via the network, so the latest functions can be easily added. For more details on upgrading, see the "download page". |
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Number of Input Channels |
1 channel for water level |
| Resolution |
1cm or 1mm |
| Measurement Accuracy |
within +0.1% full scale (including temperature drift throughout the full operating temperature range) |
| Recording Interval |
1 second to 1 day (choice of 20 intervals) |
| Compatible Sensors |
our company's semiconductor type pressure sensors, including the DS-1and DS-3 |
| Communication Port |
1 NET compatible port |
| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
*DC12V (5V to 15V) external power supply |
| Operating Temperature Range |
-20oC to +55oC, no condensation |
| Exterior Dimensions |
100(H) x 120(W) x 57.8(D),
weight about 500g |
| Two types of cases which can be mounted directly to the borehole are available, a wooden case and a lightweight resin case. Please click on the name to see an example. |
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Input Signal |
0.5mm or 1mm/ 1 pulse (no-voltage contact) |
| Recording Time |
until cumulative rainfall reaches 7,620mm. |
| Alarm Functions |
hourly precipitation, daily precipitation, continuous precipitation, effective precipitation |
| Alarm Contact Capacity |
DC30V/500mA(Max)AC100V/150mA(Max) |
| Compatible Sensor |
RS-1 tipping bucket rain gauge and transmitter |
| Communication Port |
1 NET compatible port |
| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
*DC12V (5V to 15V) external power supply |
| Operating Temperature Range |
-20oC to +55oC, no condensation |
| Exterior Dimensions |
100(H) x 120(W) x 57.8(D),
weight about 500g |
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∥Strain Sensor Input Section |
| Number of Input Channels |
30 channels |
| Sensor Power Supply |
DC 5mA (independent power supply for each channel) |
| Measurement Range |
+20000 microstrain |
| Resolution |
1 microstrain |
| Measurement Accuracy |
within +0.5% full scale (including temperature drift throughout the full operating temperature range) |
| Recording Interval |
1 minute to 1 day (choice of 13 intervals)
(in the case of a recording interval of 6 hours or more, the measurement time can be specified) |
| Alarm Functions |
change over time, cumulative change (change from initial value) |
| Compatible Sensor |
strain gauge (2-gauge 3-wire type, 120 ohm) |
| ∥Water level sensor input section |
| Number of Input Channels |
1 channel for water level |
| Resolution |
1cm or 1mm |
| Measurement Accuracy |
within +0.1% full scale (including temperature drift throughout the full operating temperature range) |
| Recording Interval |
1 second to 1 day (choice of 20 intervals) |
| Alarm Functions |
water level upper limit, water level lower limit |
| Compatible Sensors |
our company's semiconductor pressure sensors including the DS-1 |
| ∥Common section Communication Port |
| Communication Port |
1 NET compatible port |
| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
DC12V (5V to 15V) external power supply |
| Operating Temperature Range |
-20oC to +55oC, no condensation |
| Exterior Dimensions |
219(H) x 368(W) x 85(D),
weight about 4.0kg |
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A 4-channel strain data logger with network communication port built in (measurements of up to 4 elements can be carried out simultaneously to high accuracy using a variety of commercially available strain sensors including inclinometers, load meters, displacement meters, gap water pressure meters and thermometers). |
| Number of Input Channels |
4 channels for 4-gauge strain |
| Sensor Power |
Supply DC5.7mA (each channel has its own independent power supply). |
| Measurement Range |
+30000 microstrain |
| Resolution |
1 microstrain |
| Measurement Accuracy |
within +0.04% full scale (including temperature drift throughout the full operating temperature range) |
| Recording Interval |
1 minute to 1 day (choice of 13 intervals)
(in the case of a recording interval of 6 hours or more, the measurement time can be specified). |
| Alarm Functions |
upper limit, lower limit, change over time (1 minute to 30 days) |
| Compatible Sensor |
strain gauge (4 gauges, 350 ohm) |
| Input Resistance |
350 ohm(100 ohm to 500 ohm) |
| Communication Port |
1 NET compatible port |
| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
*DC12V (5V to 15V) external power supply |
| Operating Temperature range |
-20oC to +55oC, no condensation |
| Exterior Dimensions |
137(H) x 183(W) x 78(D),
weight about 1.1kg |
| It is possible to perform display and alarm settings in physical units by inputting calibration coefficients. The preheating time for each channel can also be set, so that measurements can be accurately recorded even with sensors that have slow response speeds. |
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Measurement Range |
+3276.7mm (main unit liquid crystal range is +1999.9mm) |
| Resolution |
0.1mm |
| Eire Pull-Out Length |
1m |
| Recording Interval |
dual system, 1 minute, 5 minutes to 1 day
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| Recorded Contents |
instantaneous values on the minute or hour; average values; minimum values; maximum values
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| Alarm Functions |
hourly displacement, daily displacement
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| Alarm Contact Capacity |
DC30V/500mA(Max) AC100V/150mA(Max)
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| Communication Port |
1 NET compatible port
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| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
*DC12V (5V to 15V) external power supply
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| Operating Temperature Range |
-20oC to +55oC, no condensation
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| Exterior Dimensions |
141.2H x 180W x 208D,
weight about 2.8kg
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A switching hub with 6 network communication ports built in. |
| Applications |
communication between NET units; ONET network expansion; data relaying; cable extensometer |
| Communication Ports |
6 NET-compatible ports |
| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
*DC12V (5V to 15V) external power supply |
| Operating Temperature Range |
-20oC to +55oC, no condensation
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| Exterior Dimensions |
113(H) x 164(W) x 57.8(D),
weight about 700g
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Receives warning signals from network units; in accordance with set conditions an alarm is output by a no-voltage contact. It is also possible to monitor for network faults such as broken cables. |
| Applications |
output of alarm on-site for warning and evacuation; output of alarm to remote location; posting of notice of network fault, etc. |
| Communication |
Port 1 NET-compatible port |
| Alarm Output |
There are 6 sets of no-voltage A contact or no-voltage B contact. |
| Alarm Contact Capacity |
DC30V/500mA(Max) AC100V/150mA(Max)
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| Power Supply |
*2 CR123A lithium batteries (1 main, 1 sub)
*DC12V (5V to 15V) external power supply
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| Operating Temperature Range |
-20oC to +55oC, no condensation
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| Exterior Dimensions |
113(H) x 164(W) x 57.8(D),weight about 700g
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Connects an external unit to the network via an RS232C converter. |
| Applications |
data recovery from personal computers; remote control; concentrated supervision system, etc. |
| Communication Port |
1 NET-compatible port |
| RS232C |
1 connector conforming to the RS232C standard
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| Power Supply |
DC12V (5V to 15V) external power supply
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| Operating Temperature Range |
-20oC to +55oC, no condensation
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| Exterior Dimensions |
100(H) x 120(W) x 57.8(D),weight about 450g
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| A communication commands manual for use with remote control is available for each unit. If you need one, please contact one of our company's salespeople. |
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Can communicate with and control units connected to the network. |
| Applications |
data recovery to PC card; settings and data checks for the various units; network setup |
| Communication Port |
1 NET-compatible port |
| PC Card Standard |
PCMCIA2.1/JEIDA4.2 Type II |
| PC Card Type |
flash ATA |
| Operating Temperature Range |
-10oC to +55oC, no condensation |
| Exterior Dimensions |
92(H) x 135(W) x 29(D),weight about 500g |
| A case for transporting this unit is available as an optional accessory. If you need one, please order it from one of our company's salespeople. |
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(Semiconductor Pressure Type Water Level Gauge) |
| ∥Model DS-1 |
| Measurement Ranges |
10m, 20m, 50m, 100m |
| Measurement Accuracy |
within +0.1% full scale (including effects of nonlinearity, hysteresis and reproducibility) |
| Operating Temperature Range |
0oC to +30oC |
| Temperature Characteristics |
within +0.09% full scale/ 10oC |
| Allowable Overload |
full span x 4
Sensor Material SUS316L |
| Exterior Dimensions |
25mm diameter x 122mm,
weight 120g |
| ∥Model DS-3 |
| Measurement Ranges |
75cm(with 10m cable) |
| Measurement Accuracy |
within +0.13% full scale (including effects of nonlinearity, hysteresis and reproducibility) |
| Operating Temperature |
Range 0oC to +30oC |
| Temperature Characteristics |
ithin +0.3% full scale/ 10oC |
| Allowable Overload |
full span x 6 |
| Sensor Material |
SUS316L |
| Exterior Dimensions |
25mm diameter x 122mm,
weight 120g |
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Detection Method |
tipping bucket type |
| Measurement Unit |
0.5mm per tip-over (pulse) |
| Water Intake Diameter |
200mm |
| Output Signal |
"make" contact signal |
| Exterior Dimensions |
about 200mm diameter x 450mm |
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