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CMCP505 LED/LCD Displays sold prior to 01/01/07 can only be recalibrated
to a different full scale by changing resistor R2. The existing R2 resistor
may be removed using a soldering iron and solder sucker. R2 can then
be carefully replaced after shaping and clipping the leads to the proper
shape and length. If a solder sucker is not available simply clip out
the resistor by cutting the leads close to the resistor body. The leads
remaining in the board can then be stood up and new resistor soldered
between them. Replacement resistors need to be 1% precision resistor,
1/4 watt.
After installing the proper resistor, apply 5.00 VDC to the input, the
full scale value can be adjusted (tweaked) using the 3/4 turn potentiometer
accessible through hole in circuit board. Do not force potentiometer
over 3/4 turn or permanent damage will result.
If a 5.00 VDC supply is not readily available the voltage output
of the CMCP500 Monitor can be used. Using the front selector switch
select "Danger" for the danger alarm set point. Increase the set point
to 5.00 VDC using a quality digital voltmeter. Adjust display as above
then reset danger set point.
Decimal point location is changed by solder gaps SG1 (0.000), SG2 (00.00)
and SG3 (000.0). Remove and add solder to the appropriate solder gap.
Engineering Unit Decimal Point Guideline:
in/sec = 0.00 (hundredths)
mm/sec = 00.0 (tenths)
mils = 00.0 (tenths)
microns = 000 (none)
temperature = 000 (none)
Factory recalibration charge is $50.00
plus shipping. Precision resistors are in stock and are available
at no charge. Rush or International shipping charges may apply.
| Value |
R2 Value |
Full-Scale Value |
| 050 |
9.1k |
.050, .50, 5.0,
50 |
| 100 |
18.7k |
.100, 1.00, 10.0,
100 |
| 150 |
28k |
.150, 1.50, 15.0,
150 |
| 200 |
37.4k |
.200, 2.00, 20.0,
200 |
| 250 |
47.5k |
.250, 2.50, 25.0,
250 |
| 300 |
57.6k |
.300, 3.00, 30.0,
300 |
| 350 |
68.1k |
.350, 3.50, 35.0,
350 |
| 400 |
78.7k |
.400, 4.00, 40.0,
400 |
| 450 |
909k |
.450, 4.50, 45.0,
450 |
| 500 |
100k |
.500, 5.00, 50.0,
500 |
| 550 |
113k |
.550, 5.50, 55.0,
550 |
| 600 |
124k |
.600, 6.00, 60.0,
600 |
| 650 |
137k |
.650, 6.50, 65.0,
650 |
| 700 |
147k |
.700, 7.00, 70.0,
700 |
| 750 |
160k |
.750, 7.50, 75.0,
750 |
| 800 |
174k |
.800, 8.00, 80.0,
800 |
| 850 |
187k |
.850, 8.50, 85.0,
850 |
| 900 |
200k |
.900, 9.00, 90.0,
900 |
| 950 |
215k |
.950, 9.50, 95.0,
950 |
| 1000 |
226k |
1.000, 10.00, 100.0,
1000 |
| 1100 |
255k |
1.100, 11.00, 110.0,
1100 |
| 1200 |
287k |
1.200, 12.00, 120.0,
1200 |
| 1300 |
316k |
1.300, 13.00, 130.0,
1300 |
| 1400 |
357k |
1.400, 14.00, 140.0,
1400 |
| 1500 |
390k |
1.500, 15.00, 150.0,
1500 |
| 1600 |
430k |
1.600, 16.00, 160.0,
1600 |
| 1700 |
470k |
1.700, 17.00, 170.0,
1700 |
| 1800 |
511k |
1.800, 18.00, 180.0,
1800 |
| 1900 |
560k |
1.900, 19.00, 190.0,
1900 |
| 1999 |
604k |
1.999, 19.99, 199.9,
1999 |
Copyright 2005,
STI
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