Micro-controller based 16-Channel RTD Scanner

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Charlotte Hancock
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1 Micro-controller based 16-Channel RTD Scanner Model No. SC-16 Front View:- TEMPERATURE SCANNER PV O C AUTO MAN PROG ESC ACK DPM INSTRUMENTS PVT. LTD. SC-16A Technical specification:- Size : 96 X 192 X 200 mm. Display : 2 Row 4 Digit Seven Segment 0.53 LED Operating Voltage : 230VAC 50Hz.+/- 15% Calibration : By Software Input : RTD Accuracy : +/- 0.25% of Span Operating Range : C to C Resolution : C

2 Default Display:- PV AT MAN Sc08-A501 SC-12 Key Function:- SET Key INC Key DEC Key ESC Key : Enter into edit mode to change the value of parameter. To set the difference parameter. : Dual Purpose 1. Scrolls up through menus/parameter or increments the parameter value when in edit mode. 2. Increment channel in Manual mode : Dual Purpose 1. Scrolls down through menus/parameter or decrements the parameter value when in edit mode. 2. Decrement channel in Manual mode : Dual Purpose 1. Comes out of edit mode / escapes to default display screen. 2. Relay acknowledgement Editing different levels:- Sr.No Level Level Parameter 1 One Scan mode, Scan Time, Skip. 2 Two Offset Adjust Three Pass Word, Calibration. Press SET Key to enter in edit mode As display shows Edit press INC Key and select desired level When you entered to different level get the following messages. Meaning of each message and its limit given in the following table. Flashing means it s editable now you can change the value of particular message.

3 Level- 1 Sr. No. Display Label Description 1 Level 1 2 Scan mode 3 Scan time Limit(1 Sec-99 Sec) 4 Skip (On - Off) I Skip -1 II Skip -2 III Skip -3 IV Skip -4 V Skip -5 VI Skip -6 VII Skip -7 VIII Skip -8 IX Skip -9 X Skip -10 XI Skip -11 XII Skip -12 XIII Skip -13 XIII Skip -14 XV Skip -15 XVI Skip -16

4 Level 2:- Sr. No. Display Label Description 1 Level 2 2 Offset for Channel 1 3 Offset for Channel 2 4 Offset for Channel 3 5 Offset for Channel 4 6 Offset for Channel 5 7 Offset for Channel 6 8 Offset for Channel 7 9 Offset for Channel 8 10 Offset for Channel 9 11 Offset for Channel Offset for Channel Offset for Channel 12 Offset for Channel 13 Offset for Channel 14 Offset for Channel 15 Offset for Channel 16 Table 1.3

5 Display Label s in Level 1,2 and 3:- Sr. No. Display Label Description 1 Scan mode Auto Enable 2 Scan mode Manual Enable 3 Pass word 4 ON 5 OFF Table 1.5 Note: The label likes scan mode corresponding to the message s so the edit this use INC key which rolls the different corresponding messages. The label like offset adjust to channel 1 corresponding to the numbers so to edit this use INC key to increment value and decrement key to decries the value which rolls value in max and min value. Level 3:- Sr.No Label Description 1 Level 3 2 Pass word ( ) 3 Feed Low Calibration / Low Temperature 4 Feed High Calibration / High Temperature Table 1.4

6 Editing Level 3 Parameter (calibration):- Use the key combination to as per stated earlier to move in the calibration level. Then the display shows the calibration point1 by entering the appropriate password moved to When the display flashing indicate that calibrating point saving the Low calibration. At this instant by using the correct source at the input side save the different calibration point. At this instant using INC and DEC key adjust feed temperature with display temperature. after getting correct notation press SET key. and display stop flashing now pressing INC key again.display shows now feed high temperature and do the same thing as done at lower calibration side. Now press set key to store the high set point. now press the INC key which shows lower calibration display. Check by feeding it low point. If it not matching the input adjust as stated earlier do the same thing for higher side keep doing same thing until you the correct notation. CONNECTOR WIRING DETAILS: A B B A B B A B B A B B A B B A B B A B B A B B A B B A B B SENSOR - 1 SENSOR - 2 SENSOR - 3 SENSOR - 4 SENSOR - 5 SENSOR - 6 SENSOR - 7 SENSOR - 8 SENSOR - 9 SENSOR A B B A B B A B B A B B A B B A B B SENSOR - 1 SENSOR - 2 SENSOR - 3 SENSOR - 4 SENSOR - 5 SENSOR L N E 230 VAC

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