Flowserve NT3000 Series - Manual (Page 3)

3
NT 3000 Series Electro-Pneumatic Transducer Module FCD VLAIM0047-00 - 09/04
flowserve.com
General Information
This bulletin is designed to assist in installing, calibrating, trouble-
shooting and performing maintenance as required for the Flowserve
Valtek
® NT 3000 series electro-pneumatic transducer.
Product users and maintenance personnel should read thoroughly and
follow exactly the instructions contained in this bulletin prior to opera-
tion of the transducer. If there is any question concerning this bulletin,
call a Flowserve representative.
To avoid possible injury to personnel or damage to equipment, users
must strictly adhere to WARNING and CAUTION notes. Modifying
this product, substituting non-factory or inferior parts, or using
maintenance procedures other than outlined could drastically affect
performance, be hazardous to personnel and equipment, and may void
existing warranties.
c WARNING: This product has electrical conduit connections in
thread sizes ½-inch NPT or M20 (distinguished by the letter
“M” stamped on the conduit port) which appear identical but
are not interchangeable. Forcing dissimilar threads together
will damage equipment, cause personal injury and void
hazardous location certifications. Conduit fittings must match
equipment housing threads before installation. If threads do
not match, obtain suitable adapters or contact a Flowserve
office.
NOTE: Numbers in parenthesis correspond to the part item numbers in
Figure 8.
The Valtek NT 3000 series electro-pneumatic transducer is used with
a milliampere electrical control signal. It is interchangeable with the XL
series or Beta series pneumatic positioners and can be mounted on
either Valtek linear or rotary actuators without modification.
The NT 3000 series transducer is certified for the following locations:
FM/CSA
Intrinsically Safe: See Figure 1
Class I, Div. 1, Groups A, B, C, D
Class II, Groups E, F, G
Explosion-proof:
Class I, Div. 1, Groups B, C, D
Class II, Div. 1, Groups E, F, G
CENELEC
II 2 G, EEx d IIB + H
2
EEx ia IIC
II 2G EEx d IIB+H2
II 1G EEx ia IIC
II 1D EEx ia IIC (90°C)
II 3G EEx nL
II 3D EEx nL (70°C)
T6, Tamb -40°C to 40°C
T5, Tamb -40°C to 75°C
T4, Tamb -40°C to 110°C
SAA
Ex d, IIB + H
2
T6 IP65
Ex ia IIC T5 IP 65
Since the positioner is insensitive to supply pressure changes and
can handle supply pressures from 30 to 150 psi, a supply regulator is
usually not required; however, a coalescing air filter is highly recom-
mended.
c WARNING: Substitution of components may impair intrinsic
safety.
NOTE: The air supply should conform to ISA-7.0.01 (a dew point at
least 18°F / -7.8°C below ambient temperature, particle size below five
microns, oil content not to exceed one part per million).