M-system 6BLC Manual de usuario

BEFORE USE ....

Thank you for choosing M-System. Before use, please check

contents of the package you received as outlined below.

If you have any problems or questions with the product,

please contact M-System’s Sales Ofﬁce or representatives.

■PACKAGE INCLUDES:

Transmitter module............................................................(1)

Outdoor enclosure ...............................................................(1)

Mounting screws

Bolt (M8 × 15)....................................................................(4)

Spring washer for M8 .......................................................(4)

Mounting bracket assembly (optional)

Mounting bracket..............................................................(1)

M10 U-bolt.........................................................................(2)

Nut for M10 .......................................................................(4)

Spring washer for M10 .....................................................(4)

■MODEL NO.

Conﬁrm Model No. marking on the product to be exactly

what you ordered.

■INSTRUCTION MANUAL

This manual describes necessary points of caution when

you use this product, including installation, connection and

basic maintenance procedures.

POINTS OF CAUTION

■GENERAL PRECAUTIONS

• Before you remove the unit or mount it, turn off the power

supply and input signal for safety.

■ENVIRONMENT

• Do not install the unit where it is subjected to continuous

vibration. Do not subject the unit to physical impact.

• Environmental temperature must be within -5 to +70°C

(23 to 158°F) in order to ensure adequate life span and

operation.

■WIRING

• Do not install cables close to noise sources (relay drive

cable, high frequency line, etc.).

• Do not bind these cables together with those in which

noises are present. Do not install them in the same duct.

■AND ....

• The unit is designed to function as soon as power is sup-

plied, however, a warm up for 10 minutes is required for

satisfying complete performance described in the data

sheet.

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-8890 Rev.1 P. 1 / 5

INSTRUCTION MANUAL

STRAIN GAUGE TRANSMITTER MODEL 6BLC

COMPONENT IDENTIFICATION

Case

Specifications

Transmitter Module

Gasket

Cover

Internal Earthing Screw

External Earthing Screw

Spring Clip(s)

Knurled Knob(s)

Cable Entry Conduit

•Case Details

6BLC

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-8890 Rev.1 P. 2 / 5

EXTERNAL DIMENSIONS unit: mm (inch)

4–M8, 12 deep

92 (3.62)

110 (4.33)

70 (2.76)

118 (4.65)

7 (.28)

max.

39 (1.54)

19 (.75)

92 (3.62)

104 (4.09)

(.55)

(1.02)

MOUNTING BRACKET

(optional)

110 (4.33) dia.

19 (.75)

2–G 1/2, 1/2NPT, M20x1.5 or PG13.5

174 (6.85)

114 (4.49)

110 (4.33)

SPACE REQUIRED TO REMOVE COVER

6BLC

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-8890 Rev.1 P. 3 / 5

INSTALLATION

■MOUNTING THE ENCLOSURE ON A PIPE ■MOUNTING THE ENCLOSURE ON A WALL

TERMINAL CONNECTIONS

Connect the unit as in the diagram below.

LOAD

OUTPUT

24V DC

4 – 20mA DC

−

STRAIN GAUGE

(4-WIRE BRIDGE CIRCUIT)

EXC.

INPUT

6BLC

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-8890 Rev.1 P. 4 / 5

WIRING INSTRUCTIONS

■SCREW TERMINAL

Torque: 0.6 N·m

CHECKING

Open the unit’s outdoor enclosure cover when you conduct

checking of the transmitter. Be sure to close the cover after

the checking is complete.

1) Terminal wiring: Check that all cables are correctly con-

nected according to the connection diagram.

2) Strain gauge: Nominal bridge resistance of strain gauges

that can be connected to the unit is 350 Ω or greater.

3) Input: Check that the input signal is within 0 – 100% of

the full-scale. When applying maximum load, check that

voltage equals Exc. × Strain Gauge Sensitivity.

4) Output: Check that the load is within the permissible

limit including wiring resistance.

Load Resistance (Ω) = Supply Voltage (V) – 13 (V)

0.02 (A)

(including leadwire resistance)

ADJUSTMENT PROCEDURE

This unit is calibrated at the factory to meet the ordered

speciﬁcations, therefore you usually do not need any cali-

bration.

For matching the signal to a receiving instrument or in case

of regular calibration, adjust the output as explained below.

Zero and Span adjustments are located behind the top cover

of the unit. Open the enclosure cover, release the knurled

knobs at the front of the unit and open the top cover.

After the calibration is complete, be sure to close both cov-

ers.

1234

VR1 VR2

■HOW TO CALIBRATE THE OUTPUT SIGNAL

Use a signal source and measuring instruments of sufﬁcient

accuracy level. Turn the power supply on and warm up for

more than 10 minutes.

1) ZERO: Apply 0% input and adjust output to 0% with the

VR1.

2) SPAN: Apply 100% input and adjust output to 100% with

the VR2.

3) Check ZERO adjustment again with 0% input.

4) When ZERO value is changed, repeat the above proce-

dure 1) – 3).

MAINTENANCE

Regular calibration procedure is explained below:

■CALIBRATION

Warm up the unit for at least 10 minutes. Apply 0%, 25%,

50%, 75% and 100% input signal. Check that the output

signal for the respective input signal remains within accu-

racy described in the data sheet. When the output is out of

tolerance, recalibrate the unit according to the “ADJUST-

MENT PROCEDURE” explained earlier.

LIGHTNING SURGE PROTECTION

M-System offers a series of lightning surge protector for

protection against induced lightning surges. Please contact

M-System to choose appropriate models.

6BLC

5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN

Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp

EM-8890 Rev.1 P. 5 / 5

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