OPQS2 Series

Quartz Type Water
Level Gauge(Optical Fiber Transmission Type)■ Lightening protection measure (with a wireless cable)■ High accuracy measurement with a quartz oscillator■ Optical power supply (sensor power generated with the light)■ Wide measuring range

https://www.takuwa.co.jp/en/

The water pressure, varied as the water level changes, is measured with a quartz oscillator, whose oscillating frequency is converted to
optical signals (SM) at the E/O converter inside the sensor for transmission.
The power source of the sensor receives the laser light, emitted from the light source built in the water level gauge coder, at the opticalelectric power supply to generate the electric power.
Free from lightning surge as a wireless cable (optical fiber) is used for data transmission between the sensor and the signal converter.
High accuracy measurement, without a conversion error caused by the secular change commonly seen in diaphragmA wide measurement range, from 10m to 70m, applicable not only to rivers but also to dams.

Specifications■ Optical quartz sensor(Optical fiber transmission type)Model■ Configuration diagram

OPQS2-10(measuring range 0 to 10m)
OPQS2-20(measuring range 0 to 20m)
OPQS2-30(measuring range 0 to 30m)
OPQS2-50(measuring range 0 to 50m)
OPQS2-70(measuring range 0 to 70m)

Max.3kmMax.200m
Indoor shelter

Accuracy±0.05%FS±0.02%FS±0.01%FS*QS-S30/S50/S70 are manufactured for limited quantities.

Temperature coefficient at 0 point±0.0007% FS/℃

Temperature sensitivity coefficient±0.0049% FS/℃

Overload resistance

120%FSPower supply

Optical power feeding uni t：DC9V

Optical fiber

SM Type Optical Fiber(10/125µm) 2-core cable

Operating condition(temperature, humidity)-10℃ to +60℃ (No freezing)

Material

SUS316L or Titanium(for sea)

Dimensions

280 x φ60 mm

WeightApprox.3kg

Cable

Dedicated cable(Sensor to Junction box)

Junction box

Opticalterminal box(Outdoor, wall-mounted type)

Water level
coder
Output data

Sensor cable

Power supply

Concrete revetment, etc.
Protective steel pipe

Quartz sensor(Optical Fiber Transmission Type)■ Optical quartz sensor(Optical fiber transmission type)Max.200m■ Water level coder
WLC3-OP1−| A |B|C|D|E|F |A) Analog outputB) BCD output

10±5
Water Level Measurement position

LCD touch panel
20 sec, 1 min, 5 min,10 min(every 1 sec) or (every 2 sec)
5 sec, 10 sec, 15 sec (every 1 sec)

Weighted average
Level Setting-999.999m to +999.999m

Input type

Quartz type sensor(Optical fiber transmission type)
Optical signal(Frequency signal 28 to 44 kHz)

Number of input

1 channel

Power supply

Select from DC12V or AC100V 50/60HzDimensions

480W x 99H x 300D mm (excluding protruding parts)

Weight8kg or less1)Analog output2)BCD output3)Comparative output

Output4)Card recording■ Water level coder430

22 channels at 1 input, select from4 to 20mA, 0 to 5V or 0 to 10mV
2 channels(Max.) at 1 input,
BCD output 5 digits with odd parity
8 points at 1 input(A,B,C,D≦H or A,B,C,D≧H),
Non-voltage A contact(Photo MOS relay output)
Recording media：
SD card(Max.2GB)
Recording interval：
No, 1, 2, 5, 10, 15, 20, 30(min),1, 2, 3, 6(hour)
Recording capacity：
1 year or more(at 1 min recording)

Top view

50
99

None averaging
Moving average

300

Processing functions
Average calculation

ø12Display・Operation

C) Comparison output
D) SD card slotE) Power supplyF) Serial output

Dedicated Sensor
Cable(Optical Fiber)

280
ø60

Model

0: No, 1: 4 to 20mA,
2: 0 to 5V, 3: 0 to 10mV
0: No, 1: Yes 1 for each,
2= Yes 2 for each
0: No, 1: Yes
0: No, 1: Yes
D1: DC12V, A1: AC100V
Blank: RS232C, R4: RS422

460
480
Front view300
SD card slot
(Open only when SD card is mounted)

Name Plate Position

Side view

2401-MS-000