The Equipment is designed to measure the response time of the temperature sensors, either thermocouple or platinum resistance sensors. The range of the unit is 999.999 secs. with 1 m.sec. resolution. A crystal controlled clock is used for measurement of time for better accuracy, stability and reliability. The continuous display of input is provided for monitoring purposes.
The unit is capable of accepting
• 0– 40.00 m v for Thermocouple inputs.
• 0– 400.00 ohms for platinum resistance sensors.
Testing of all types of thermocouple or RTD can be done with the help of this instrument.
The input (either thermocouple of RTD) is selected by switch. The four wire method is used for measurement of RTD input.
The instrument measures the time between the two set points settable with the help of two sets of four digit thumbwheels provided on front panel.
The measurement can be either on upgoing or downgoing sensor inputs. The mode of input is selected with the help of UP/DN switch is in UP position, the Time count is started, when the input of the sensor under test, crosses the minimum setting and is stopped. When the input crosses the maximum settings. When UP/DN switch is in DN position, the time count is started, when the input of the sensors under test goes below the maximum setting and is stopped when the input goes below the minimum setting.
The special features such as error indications (with audible output) on wrong thumbwheel settings, invalid input and reserve polarity connection in case of thermocouple input make the instrument safe.
The special Diagnostic software is utilised to check the proper functioning of equipment. One can enter into diagnostic mode with the help of DGNS switch provided at rear panel.
The indication is given on 6 digit display for time and 4 digit display for input on 12.5 mm seven segment Bright RED LEDs.
The equipment works on 230 +\- 10% Volts, 50 Hz, single phase AC mains and has size of 350 mm (W) x 140 mm (H) x 270 mm (D)
|
