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Supply of Pressure Transmitter
Reference: GOS0993L17/2H 5/4/2016, Location: Asia
Category: Transmitters, Pressure
Scope of Work
The company invites limited tenders for the supply of Qty=5NO, Pressure Transmitter.
The specification of pressure transmitter ( 0-105 Kg/cm² ) are as follows:-
0-105 Kg/Cm², two wire gauge pressure transmitter using solid-state microcapacitance/ peizoresistive sensor and electronics in flame and explosion proof housing as per specification given below:
a) Operating pressure range: 0-105 Kg/Cm².
b) Accuracy: ± 0.1% of indicated pressure.
c) Output: 4-20mA D.C. Zero, span adjustment to be provided externally.
d) Power supply: 12-45 VDC.
e) Warranty: 18 months from dispatch or 12 months from commissioning.
f) Load limitation: Should be able to drive a load of 600 ohm at 24V D.C.
g) Turn down: 100:1
h) Process connection: 2" ANSI 600lbs RTJ Flange
i) Remote Seal and Capillary: Remote seal with isolating and replaceable diaphragm unit with 6 meter long armoured capillary assembly terminating a 2" ANSI 600 lbs/RTJ flange shall be supplied. The capillary shall be detachable from the flange and transmitter unit and will be filled with silicon oil (DC 200) for transmitting pressure to the pressure transmitter. The capillary shall have ¼ " NPT (M) at both ends. The process side of the flange should have a groove to accommodate RTJ Ring No.23 and the Ring No.23 has to be supplied along with each instrument.
j) Electrical connection: Conduit ½" NPT.
k) Ambient temperature for operation: 55ºC. Output stability should be 0.10% over the span within this temperature range.
l) Pressure reading stability = ±0.25% of upper range limit for two years.
m) Repeatability = ± 0.1 at max span.
n) Ambient temperature for operation: 55°C.Output stability should be 0.1% over the span within this temperature range.
o) Protection against the following shall be provided and clearly mentioned in the quotation.
i) EMI/RFI
ii) Lightning
iii) Current/voltage transients
iv) Reverse polarity
v) Overload
Any other item required for above protection is to be incorporated alongwith.
p) Flame and explosion proof enclosure suitability to operate in hazardous location class-1, Division -1 and group -C&D. Approval certificate for the above should be given from the competent authority i.e. CCOE/ATEX certification and calibration report shall be enclosed with the offer.
q) A local display should be integral part of the pressure transmitter. For this, digital display/analogue meter in percentage proportional to the range shall be provided.
r) End connections of capillary should be suitably supported.
s) Proper mounting bracket & 'U' Bolt shall be supplied along with each equipment for installation on 2" pipe
t) Material of construction: Flange: 316 SS
Diaphragm: 316SS
Capillary: 316SS
Armour: 304SS
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