Response Time Measurement Units, Real Time Clocks, Real Time Clock With Automatic Siren Facility, Time Synchronization, Time Recorders, Power Supply Indicators, Gate Position Systems

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)

MECHANICAL SPECIFICATIONS:

Size : 350 mm (W) x 140 mm (H) x 250 mm (D)

RESPONSE TIME MEASUREMENT UNIT
Response Time Range	999.999 Secs.
Response Time Resolution	1 milli second
Accuracy of measurement	0.1 % of reading +\- 1 msec. Crystal controlled clock.
Display
Time	6 digits of 12.5 mm 7 segment Bright RED LED
Input	4 digits of 12.5 mm 7 segment Bright RED LED
INPUT RANGE
Thermocouple PT – 100	0.00 to 40.00 mV 0.00 to 400.00 ohms.
SETTINGS FOR CROSSOVER
Maximum	4 digit of Thumb Wheel Switches (0 – 4000)
Minimum	4 digit of Thumb Wheel Switches (0 – 4000)
Accuracy of Indication	0.05% +/- 2 count
Power supply	230 V +\- 10% 50 Hz AC

SPECIAL FEATURES:

• Error indication on incorrect thumbwheel settings.
• Error indication on invalid input.
• Error indication on reverse connection of thermocouple input.
• All the errors are displayed alongwith the audible output.
• Crossover of the setpoint is also indicated by audible output.
• Selectable mode of measurement either Upgoing or Downgoing.
• Self Diagnostic feature to test the instrument.

This is unit is specifically developed for AUTOMISATION OF FACTORY SIREN to avoid manual errors, and aid the security personnel. The unit operates without manual intervention, most accurately, consistently, and most of all most RELIABLY.

The unit has quartz crystal controlled Real Time Clock with battery back up (back up of TenYars), operating in 24 hours fashion. Eight-bit micro controller is used to control all the operations. The time setting is achieved with the operation of various keys provided on the equipment. On Time of the SIREN is also settable. The present time (HR / MIN along with Day Month and Year (DD / MM / YY) is displayed on the 16X2 Alphanumeric Bakelite LCD. One change over Potential Free contact of 6amps at 230 Volts AC suitable to operate the siren is provided. We can also provide the SIZE 0 contator if required for enhanced power requirements. MANUAL mode is also provided to operate the SIREN in case of EMERGANCY.

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Real Time CLock With Automatic Sire Facility

Only authorized person accomplishes clock setting.

The unit operates on 230 V AC Mains, and will be kept under lock and key and with only the Authorized person can change the settings. (With pre defined password)

Salient Features:

• Real Time RTC with BB RAM.
• Settings under lock and key.
• 24 hour setting.
• Clock can be set externally.
• Heavy duty current rating for Siren operation.
• 230 +/- 10% Volts AC operation.
• Most compact and reliable.
• Wall Mounting Unit.