M-system B3HU Installation Manual

SAFE INSTALLATION MANUAL (FM APPROVAL)
2-WIRE UNIVERSAL TEMPERATURE TRANSMITTER
(HART communication, intrinsically safe)
BEFORE USE ....
■ SAFETY PRECAUTIONS
This manual describes important points of caution for safe
use of this product in potentially explosive atmosphere.
Please read this manual carefully before installing and op-
erating the product.
■ MODEL NUMBER IDENTIFICATION
1) SAFETY APPROVAL
0 : None
1 : FM intrinsically safe
■ MANUFACTURED DATE CODE IDENTIFICATION
The manufactured year and month can be identified by the
serial number described on the specification label.
YEAR
V : 2008 1 : 2011
W : 2009 :
X : 2010 9 : 2019
MONTH
A : January
B : February
C : March
: :
L : December
WARNING
Explosions could result in death or serious injury:
• The housing cover must not be removed under any cir-
cumstances.
• Before you remove the unit or mount it, or before you con-
nect or disconnect the wiring, turn off the power supply
and the input signal for safety. Do not disconnect unless
the area is known to be non-explosive.
• Whenever you need to measure voltage across the termi-
nals or apply a simulated input signal to the terminals,
make sure that there is no danger of explosion in the at-
mosphere.
• Before connecting a HART communicator in an explosive
atmosphere, make sure the instruments in the loop are
installed in accordance with intrinsically safe field wiring
practices.
• Verify the certification of the product described on the
specification label on the product.
• Verify that the operating atmosphere of the transmitter is
consistent with the appropriate hazardous locations certi-
fications.
• Verify that the environmental temperature is within the
temperature class required for the area.
Model No. B3HU – 1
Serial No. Y M xxxxxx
:
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: (06)6659-8201 Fax: (06)6659-8510 E-mail: info@m-system.co.jp
MODEL
Failure to follow these installation guidelines could result
in death or serious injury:
• Make sure only qualified personnel perform the installa-
tion.
SAFETY FEATURES & CAUTIONS
■ INTRINSICALLY SAFE APPROVAL
• FM
Class I, Division 1, Groups A, B, C and D
Class I, Zone 0, AEx ia IIC
• Entity Parameters
Ui (Vmax) = 30V DC
Ii (Imax) = 96mA DC
Pi (Pmax) = 720mW
Ci = 1 nF
Li = 0 mH
• Prior to installation, check that the safety class of this
unit satisfies the system requirements.
• A safety barrier must be installed between the unit and
its power supply. Refer to "Installation Diagram" attached
at the end of this manual when selecting a safety barrier.
• The power supply and the safety barrier must be located
in a non-hazardous area.
• Environmental temperature must be within the following
ranges depending upon the required temperature class.
T4 : -40°C ≤ Ta ≤ +80°C
T5 : -40°C ≤ Ta ≤ +55°C
• DO NOT RUB the surface of the plastic enclosure with a
dry cloth. Electrostatic charge generated by the friction
may cause an explosion.
• The wiring method must be in accordance with the electri-
cal parameters described in this manual.
• Substitution of components may impair suitability for the
hazardous location and may cause an explosion.
• When metal particles are present in the air, install the
model B3HU inside an enclosure with proper ventilation.
• For installing the B3HU in an environment with a high
relative humidity exceeding 0 to 95% RH or in a condens-
ing atmosphere, install the unit inside an appropriate en-
closure.
B3HU
B3HU
Uo (Voc) = 6.4V DC
Io (Isc) = 30mA DC
Po = 48mW
Co (Ca) = 20 µF
Lo (La) = 10 mH
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