EQUIPMENT: Thermocouple wire for flue gas temperature measurement

1.1

Thermocouple wire

Multi strand with glass braided insulation

1.2

Type

K Type

1.3

Conductor size

24 AWG (Multistrand)

1.4

Insulation

Individual conductors glass braided and

overall glass braided to withstand

temperature up to 600o C (high

temperature class)

1.5

Limits of error

+ / - 1.5o C or 0.4% whichever is more

1.6

Standard

ANSI – C96.1 – 1984

1.7

Packing

In the rolls of 300 mts. (approx.)

2.0

Connectors:

Suitable Male/female connectors of

thermocouple grade for connecting

thermocouple and the extension wires.

3.0

Extension Wire

K type Extension wires

3.1

Pairs

4 pairs

3.2

Length

20 mts

3.3

Temperature limit

105o C (polyvinyl insulation approx.

1.1 mm thick)

3.4

Properties

Resistant to moisture, abrasion and UV

light and chemicals

Note:

Quantities can be decided as per the specific requirements.

Specifications:

1.

Measurement Temperature range

500 o C to 1300 o C

Process Temperature

up to 1500 oC

2.

Length

6 Mt & 9 Mt

(for 210 MW) (for 500 MW)

(a) Cooling Water Pressure

5 – 6 kg/cm2

(b) Air pressure for aspirator

6 kg/cm2

4.

Suitable for sampling flue gas

The probe materials are to

(CO, CO2, NOX, SOX, O2)

be suitable for the above

Accessories

service

i) Aspirator kit for high velocity temperature measurement

ii) Connecting quick disconnect coupling

1 set + 1 spare set

for water and air connections

iii) Spare thermocouple

2 Nos

iv) Spare radiant shield for tip

4 Nos

v) Water and air hoses

1 set optional

vi) Temperature read out

1 No.

5.

Quantity

1 set

Sl.No.

Features

Essentials/Minimum Requirement

1.

Dirty Air Probe:

Service

Coal / Air Mixture

Temperature

60o C – 120o C

Pressure

100 mmWC

PF Pipe Size (ID)

500 mm (approx.) (*1)

Straight Lengths

Upstream – 1Mt. To 3 Mtr.

Probe Material and Connections

Stainless steel (suitable grade)

K factor to be prescribed

a) Standard ½” NPT (for clean air test)

b) A set of 1.25” full port balls valves

schedule 40 class NPT Threads for

dustless connector (*2)

Accuracy

+/- 2% of actual cost conduit velocity

a)

Thermocouple type

K Type

Temperature Range

0 – 600o C

Type of element mineral insulated (duplex)

Calibration Standard

ANSI – C96.1 – 1984

Approx. Time for measurement

1 Minute

b)

Pressure Range

10” WC

Accuracy

+ / - 0.1” WC

Approx. Time for measurement

Instantaneous

Accuracy

+ / - 10% of isokinetic flow rate in

Coal Conduit

Time of sample

4 minutes