❖ TC-R
It is made up of plutonium (+ve electrode) & rhodium (-ve electrode). It operates over the
temperature range of (0) to (1750) C temperature. Its sensitivity is 36 uV/C
❖ TC-S
It is made up of plutonium & rhodium (+ve electrode) & platinum (-ve electrode). It operates over
the temperature range of (100) to (1750) C temperature. Its sensitivity is 43 uV/C. Mainly used
for calibration for melting point of gold.
❖ TC-T
It is made up of copper (+ve electrode) & constantan (-ve electrode). It operates over the
temperature range of (-200) to (400) C temperature. Its sensitivity is 32 uV/C. Mostly used in
vacuum furnaces.
❖ TC-B
It is made up of platinum (+ve electrode) & rhodium (-ve electrode). It operates over the
temperature range of (200) to (1800) C temperature. Its sensitivity is 52 uV/C.
❖ TC-E
It is made up of chromel (+ve electrode) & constantan (-ve electrode). It operates over the
temperature range of (-100) to (1000) C temperature. Also used for measuring low temperature,
cryogenics (-110) to (140) C. Its sensitivity is 68 uV/C.
❖ TC-N
It is made up of nicrosil (+ve electrode) & nisil (-ve electrode). It operates over the temperature
range of (-200) to (1300) C temperature. Its sensitivity is 39 uV/C.
6.2.7.1.3 Process Inputs
There is a total of 6 types of process inputs the recorder accepts
• 4-20 mA
• 0-20 mA
• Unipolar 1 Volt
• Bipolar 1 Volt
• Unipolar 5 Volt
• Bipolar 5 Volt
One of the examples of these process input is the Vibration sensor. The 4-162 vibration sensor is a
compact, well-protected industrial accelerometer, giving a process output of 4-20mA proportional to
various vibration ranges in terms of velocity RMS.
The 4-162 is intended for use as a direct input of vibration levels into many kinds of control and data
acquisition systems, however it can be used with a trip amplifier or suitable display as a standalone
unit.
Unipolar voltages include only one positive voltage for logic 1. That is unipolar 1 volt, 5 volt gives 1
volt, 5 volts output respectively for logic 1 and 0 volt for logic 0.
Whereas bipolar voltages give output in form of positive and negative voltages. Bipolar 1 volt, 5 volt
gives output +1-volt, +5 volt for logic 1 respectively and gives -1 volts, -5 volt for logic 0 respectively.
To Next Page
Loading...
Need help?
General
