M-system 6BVS User manual

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.
SIGNAL TRANSMITTER
(eld-selectable range) MODEL 6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 1 / 7
INSTRUCTION MANUAL

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
6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 2 / 7

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)
14
(.55)
26
(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
6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 3 / 7

INSTALLATION
■MOUNTING THE ENCLOSURE ON A PIPE ■MOUNTING THE ENCLOSURE ON A WALL
TERMINAL CONNECTIONS
Connect the unit as in the diagram below.
6
5
1
2
LOAD
OUTPUT
24V DC
4 − 20mA DC
+
−
+
−
INPUT
6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 4 / 7

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) Input: Check that the input signal is within 0 – 100% of
the full-scale.
3) 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.
■PREPARATION
1) Open the outdoor enclosure cover.
2) Release knurled knobs (A) at the front of the transmitter
and open the top cover.
3) Remove two screws (B).
4) After the calibration is complete, refit the screws and
close the covers by performing the above procedure in the
reverse order.
AA
B
1234
56
SW3 SW2
VR4 VR5
VR1 VR2
SW2 : Zero Bias Selector
SW3 : Span Gain Selector
VR1 : 0% Adjustment (ne)
VR2 : 100% Adjustment (ne)
VR5 : 0% Adjustment (coarse)
VR4 : 100% Adjustment (coarse)
■INPUT BIAS ADJUSTMENT (0% input or lower range value)
1) Connect a voltmeter across the terminal 3 (+) and 2 (–).
2) With minimum (0%) input, adjust SW2 to appropriate
positions – nearest to desired value – according to Table
1 to Table 3 [INPUT BIAS SELECTION TABLE], and ad-
just output reading to 0 ±0.002V with VR5 (zero-coarse
adjustment).
3) With minimum (0%) input, adjust output to 0 ±0.05%
with VR1 (zero-fine adjustment).
■INPUT RANGE ADJUSTMENT (100% input or upper range value)
4) With maximum (100%) input, adjust SW3 to appropriate
positions according to Table 4 to Table 6 [INPUT RANGE
SELECTION TABLE], and adjust output to 100 ±0.05%
with VR4 (span-coarse adjustment) and VR2 (span-fine
adjustment).
5) With minimum (0%) input, check that input is 0 ±0.05%.
When the ZERO point is changed, repeat the procedure
1) to 4).
■OUTPUT ZERO & SPAN ADJUSTMENT
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).
6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 5 / 7

TABLES
■INPUT BIAS SELECTION TABLE
[TABLE 1] Input Span 3 to 100mV
SW2 WEIGHT OF BIT
12345678
1 1 0 0 0 0 0 0 +129mV
1 0 1 0 0 0 0 0 + 64mV
1 0 0 1 0 0 0 0 + 32mV
1 0 0 0 1 0 0 0 + 16mV
1 0 0 0 0 1 0 0 + 8mV
1 0 0 0 0 0 1 0 + 4mV
1 0 0 0 0 0 0 1 + 2mV
1 0 0 0 0 0 0 0 + 0mV
0 1 1 1 1 1 1 1 – 2mV
0 1 1 1 1 1 1 0 – 4mV
0 1 1 1 1 1 0 1 – 6mV
0 1 1 1 1 0 1 1 – 10mV
0 1 1 1 0 1 1 1 – 18mV
0 1 1 0 1 1 1 1 – 34mV
0 1 0 1 1 1 1 1 – 66mV
0 0 1 1 1 1 1 1 –131mV
[TABLE 2] Input Span 100 to 1000mV
SW2 WEIGHT OF BIT
12345678
1 1 0 0 0 0 0 0 +650mV
1 0 1 0 0 0 0 0 +325mV
1 0 0 1 0 0 0 0 +163mV
1 0 0 0 1 0 0 0 + 82mV
1 0 0 0 0 1 0 0 + 41mV
1 0 0 0 0 0 1 0 + 21mV
1 0 0 0 0 0 0 1 + 11mV
1 0 0 0 0 0 0 0 + 0mV
0 1 1 1 1 1 1 1 – 10mV
0 1 1 1 1 1 1 0 – 21mV
0 1 1 1 1 1 0 1 – 31mV
0 1 1 1 1 0 1 1 – 51mV
0 1 1 1 0 1 1 1 – 91mV
0 1 1 0 1 1 1 1 –172mV
0 1 0 1 1 1 1 1 –330mV
0 0 1 1 1 1 1 1 –650mV
[TABLE 3] Input Span 1 to 10V
SW2 WEIGHT OF BIT
12345678
1 1 0 0 0 0 0 0 +7080mV
1 0 1 0 0 0 0 0 +3540mV
1 0 0 1 0 0 0 0 +1770mV
1 0 0 0 1 0 0 0 + 890mV
1 0 0 0 0 1 0 0 + 440mV
1 0 0 0 0 0 1 0 + 210mV
1 0 0 0 0 0 0 1 + 100mV
1 0 0 0 0 0 0 0 + 0mV
0 1 1 1 1 1 1 1 – 120mV
0 1 1 1 1 1 1 0 – 240mV
0 1 1 1 1 1 0 1 – 350mV
0 1 1 1 1 0 1 1 – 560mV
0 1 1 1 0 1 1 1 – 1000mV
0 1 1 0 1 1 1 1 –1900mV
0 1 0 1 1 1 1 1 –3660mV
0 0 1 1 1 1 1 1 –7220mV
Note 1: The SW2-1 is turned ON (1) with suppressed zero
range, while it is turned OFF (0) with elevated zero
range.
Note 2: With suppressed zero range, weight of bit (mV) is
added by turning ON (1) each one of the SW2-8 to
SW2-2, while with elevated zero range, it is added by
turning OFF (0) the same.
For example, in [1 – 10V] span (TABLE 3), 1V bias
(zero suppression) is nearly obtained by turning on
SW2-1 (positive), SW2-5 and SW2-8 (890mV + 100mV
= 990mV).
6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 6 / 7

■INPUT RANGE SELECTION TABLE
[TABLE 4] Input Span 3 to 100mV
SW3 GAIN SPAN [mV]
100%IN – 0%IN
12345678
1 1 1 1 1 1 1 1 1 – 2 50 – 100
1 1 1 1 1 1 1 0 2 – 3 33 – 50
1 1 1 1 1 1 0 1 3 – 4 25 – 33
1 1 1 1 1 1 0 0 4 – 5 20 – 25
1 1 1 1 1 0 1 1 5 – 6 16.7 – 20.0
1 1 1 1 1 0 1 0 6 – 7 14.3 – 16.7
1 1 1 1 1 0 0 1 7 – 8 12.5 – 14.3
1 1 1 1 1 0 0 0 8 – 9 11.1 – 12.5
1 1 1 1 0 1 1 1 9 – 10 10.0 – 11.1
1 1 1 1 0 1 1 0 10 – 11 9.0 – 10.0
1 1 1 0 1 1 1 1 11 – 12 8.3 – 9.0
1 1 1 0 1 1 1 0 12 – 13 7.7 – 8.3
1 1 1 0 1 1 0 1 13 – 14 7.3 – 7.7
1 1 1 0 1 1 0 0 14 – 15 6.7 – 7.3
1 1 1 0 1 0 1 1 15 – 16 6.3 – 6.7
1 1 1 0 1 0 1 0 16 – 17 5.9 – 6.3
1 1 1 0 1 0 0 1 17 – 18 5.6 – 5.9
1 1 1 0 1 0 0 0 18 – 19 5.3 – 5.6
1 1 1 0 0 1 1 1 19 – 20 5.0 – 5.3
1 1 1 0 0 1 1 0 20 – 21 4.8 – 5.0
1 1 0 1 1 1 1 1 21 – 22 4.5 – 4.8
1 1 0 1 1 1 1 0 22 – 23 4.3 – 4.5
1 1 0 1 1 1 0 1 23 – 24 4.2 – 4.3
1 1 0 1 1 1 0 0 24 – 25 4.0 – 4.2
1 1 0 1 1 0 1 1 25 – 26 3.8 – 4.0
1 1 0 1 1 0 1 0 26 – 27 3.7 – 3.8
1 1 0 1 1 0 0 1 27 – 28 3.5 – 3.7
1 1 0 1 1 0 0 0 28 – 29 3.4 – 3.5
1 1 0 1 0 1 1 1 29 – 30 3.3 – 3.4
1 1 0 1 0 1 1 0 30 – 31 3.2 – 3.3
1 1 0 0 1 1 1 1 31 – 32 3.1 – 3.2
1 1 0 0 1 1 1 0 32 – 33 3.0 – 3.1
Note 1: Turning SW3 OFF (0) in negative logic adds an weight
of bits.
Note 2: Gain indicates the multiplying factor adjustable with
SW3.
[TABLE 5] Input Span 100 to 1000mV
SW3 GAIN SPAN [V]
100%IN – 0%IN
12345678
1 1 1 1 1 1 1 1 1 – 2 0.05 – 1.00
1 1 1 1 1 1 1 0 2 – 3 0.35 – 0.50
1 1 1 1 1 1 0 1 3 – 4 0.27 – 0.35
1 1 1 1 1 1 0 0 4 – 5 0.21 – 0.27
1 1 1 1 1 0 1 1 5 – 6 0.18 – 0.21
1 1 1 1 1 0 1 0 6 – 7 0.15 – 0.18
1 1 1 1 1 0 0 1 7 – 8 0.13 – 0.15
1 1 1 1 1 0 0 0 8 – 9 0.12 – 0.13
1 1 1 1 0 1 1 1 9 – 10 0.11 – 0.12
1 1 1 1 0 1 1 0 10 – 11 0.10 – 0.11
Note 1: Turning SW3 OFF (0) in negative logic adds an weight
of bits.
Note 2: Gain indicates the multiplying factor adjustable with
SW3.
[TABLE 6] Input Span 1 to 10V
SW3 GAIN SPAN [V]
100%IN – 0%IN
12345678
1 1 1 1 1 1 1 1 1 – 2 5.0 – 10.0
1 1 1 1 1 1 1 0 2 – 3 3.5 – 5.0
1 1 1 1 1 1 0 1 3 – 4 2.7 – 3.5
1 1 1 1 1 1 0 0 4 – 5 2.1 – 2.7
1 1 1 1 1 0 1 1 5 – 6 1.8 – 2.1
1 1 1 1 1 0 1 0 6 – 7 1.5 – 1.8
1 1 1 1 1 0 0 1 7 – 8 1.3 – 1.5
1 1 1 1 1 0 0 0 8 – 9 1.2 – 1.3
1 1 1 1 0 1 1 1 9 – 10 1.1 – 1.2
1 1 1 1 0 1 1 0 10 – 11 1.0 – 1.1
Note 1: Turning SW3 OFF (0) in negative logic adds an weight
of bits.
Note 2: Gain indicates the multiplying factor adjustable with
SW3.
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.
6BVS
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: [phone] Fax: [phone] E-mail: [e-mail]
EM-8868 Rev.1 P. 7 / 7