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通過隧道全截面平均值的測量來監(jiān)控隧道內(nèi)風(fēng)速風(fēng)向或廢氣排風(fēng)管道。由于氣候狀況的變化，對空氣流動方向和流速的測量是隧道有效管理必不可少的---可以確定通風(fēng)控制和zui大程度降低運(yùn)營成本。

　 技術(shù)指標(biāo)

　 測量參數(shù)

是/否超高

　 測量量程

100m

　 測量原理

雙探頭光電開關(guān)

　 防護(hù)等級

IP 65

　 測量值輸出 模擬輸出0 / 2 / 4 ... 20 mA

　 接口 RS 232 / 422 / 485

　 狀態(tài)/控制信號 繼電器輸出（運(yùn)行/故障，報警，維護(hù)）

　 設(shè)備構(gòu)成 超聲波探頭對，計算單元

　 備注

由于氣候狀況的變化，對空氣流動方向和流速的測量是隧道有效管理必不可少的---可以確定通風(fēng)控制和zui大程度降低運(yùn)營成本。

Advanced Ultrasonic

Technology

• High-accuracy measurement at

each point across the tunnel

• High precision of air flow even

at very low velocity rates

• Additional recording of wind

directions

• Stand-alone measuring system

without any moving parts

• Simple Installation and

easy to use controls

Technical Data FLOWSIC 200

Type of models:

Transceiver unit

• FLSE 200-M, Aluminium cast housing (alumin. transducer)

• FLSE 200-M SS, Stainl. Steel housing (alumin. transducer)

• FLSE 200-H, Stainless Steel housing (titanium transducer)

evaluation Unit Measuring value processing/output, monitor function;

cable length to TR unit: 500 m max. (with optional data

repeater 1000 m max.); larger distances on request

Measurement Data

Measur. component Velocity of air flows

Measuring Principle Measurement of difference in ultrasonic transit time

Measuring range –20 m/s (65 ft/sec) ... + 20 m/s (65 ft/sec); cont. variable

Accuracy ± 0.1 m/s (0.3 ft/sec); depending on calibration, installation,

flow profile and measuring distance

Measuring distance 5 … 25 m (16 … 82 ft) with FLSE 200-M and -M SS

5 … 40 m (16 … 130 ft) with FLSE-H; larger on request

Response time 1 … 300 s (sec); freely selectable

Ambient Conditions

Ambient temperature –20…+50 °C (–4 … 120 °F)

Device Data

Maintenance intervals ½… 1 year: FLSE 200-M

1 … 5 years: FLSE 200-H depend. on application cond.

Point of Installation

• Height above road

• Angle to tunnel axis

4.2 m (14 ft) typical

45° … 60°

Displays

• Measuring values

• Status

LC-Display with 2 rows

LEDs (operation, faults, maintenance, cycles)

Power supply 90 … 140/190 … 260 V AC; 50/60 Hz;

power consumption: approx. 20 W max.

Dimensions

(L x W x D)

FLSE 200-M: 80 x 80 x 120 mm3 (260 x 260 x 393 ft3)

FLSE 200-M SS/H: 80 x 150 x 150 mm3 (260 x 492 x 492 ft3)

FLA 200: 240 x 200 x 120 mm3 (787 x 565 x 394 ft3)

Weight FLSE 200-M: approx. 1 kg (2.2 lb)

FLSE 200-M SS/H: approx. 2 kg (4.4 lb)

FLA 200: approx. 1.5 kg (3.3 lb)

Protection class IP 65/NEMA 4X

Connection/Interface via evaluation unit (customer-provided)

Signals 1 analog output: 0…20 mA, 750 Ω max. load

optional: max. 2 additional analog modules (inputs/outputs)

4 relays: 48 V AC, 1 A; electrically isolated

Interface RS 232 for service purposes;

optional: PROFIBUS, RS 422 for data transfer