PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
PACKAGE : I Bid Document VOLUME : II - Public Health Engineering
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Pressure gauge (IS 3624):<br />
The delivery of all the Pumps and Pump common header shall be provided with dial<br />
type pressure gauge of suitable range complete with copper tubes and control cocks.<br />
The gauges shall be of direct mounting SS diaphragm sealed type. The dial size of<br />
each pressure gauge shall not be less than 100/150 mm. The M.O.C. shall be<br />
suitable for storm/raw water pumping installation. Each pressure gauge shall be<br />
complete with snubber of suitable class of enclosure. Accuracy shall be 1 % of<br />
full scale range or better. Scale range shall be selected so that normal system<br />
pressure is approximately 50 % of the full scale.<br />
Specification:<br />
1. Quantity to be provided : 4 nos.<br />
2. Type : Top mounted (directly) diaphragm sealed type.<br />
3. Reference standard : IS 3624<br />
4. Range : 0 – 10 Kg / cm. sq<br />
5. Dial size : 100 / 150 mm.<br />
6. Accuracy : 1 %<br />
7. M.O.C.:<br />
Dial<br />
Flanges<br />
Internals<br />
:<br />
:<br />
:<br />
Cast Aluminium<br />
SS 316<br />
SS 304<br />
8. Enclosure : Weather proof IP 65.<br />
9. Accessories With M.O.C : Snubber, 2 way cock of SS 304<br />
Pressure Transmitters:<br />
Pressure Transmitters shall be 2 wires, smart type with facility for remote<br />
calibration. Transmitters shall also have 4-20 mA, DC output capacity up to 600<br />
ohms. Transmitters shall be provided with Local Digital indicator & shall generally<br />
be installed on Instrument stands made of 2 M.S. pipe at a convenient point.<br />
The sensing element material & internal parts shall be constructed with AISI316L<br />
in general.<br />
Temperature – Sensor Element.<br />
All Temperature Sensor Elements shall be of Duplex type with SS316 sheath &<br />
Mgo filled depending on temperature ranges, Pt:100 Probe, RTD or thermo conpu<br />
shall be used. Outer dia. of the sheath shall be minimum of 6 mm.<br />
Pressure & Differential Pressure Switches:<br />
Local switches for pressure, differential pressure etc. shall be blind type having<br />
potential free contact output for alarm/inter lock purposes. All switch elements shall<br />
be snap acting & shock proof type.<br />
DTS : Detailed Tender Specification. Page 201
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