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DMS-BZL2 Datasheet(PDF) 3 Page - Murata Power Solutions Inc. |
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DMS-BZL2 Datasheet(HTML) 3 Page - Murata Power Solutions Inc. |
3 / 5 page Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000 www.murata-ps.com DMS-40LCD-4/20S Series Ultra-Low 2.9V Loop-Drop 4½ Digit LCD Display Process Monitor MPM_DMS401LCD-420S.D02 Page 3 of 5 OPERATING AND SETUP INSTRUCTIONS Switch S2 SW3 SW4 SW5 SW6 DP1 DP2 DP3 DP4 The following procedure must be performed as the first re-calibration step every time DIP-switches S1 and S2 are reconfigured to select a new display range. The following procedure assumes the DMS-40LCD-4/20S is initially completely mis-adjusted, i.e., both potentiometers and DIP-switches S1 and S2 are randomly set. Make sure that all DIP-switch actuators are pushed as far as they will go to their designated ON (closed) or OFF (open) positions. 1. Set R7 (gain/span adjust) and R3 (zero/offset adjust) fully clockwise, roughly 20 turns, then using the settings found in the selected range, place the DIP-switches on S1 and S2 to the appropriate positions for the desired display reading. 2. Apply a precision 4mA input with proper polarity and adjust R3 (top 20-turn potentiometer) until the meter’s display reads “0000”. 3. Apply a precision 20mA input and adjust R7 (bottom 20-turn potentiom- eter) until the display reads the maximum desired reading. Repeat steps 2 and 3 to make sure the adjustments did not affect one another. 4. If necessary, select the appropriate decimal point by setting either SW3, SW4, SW5, or SW6 of S2 to ON (DP1, DP2, DP3, or DP4, respectively. NOTE: Please keep in mind the transmitter’s 4mA and 20mA output accu- racy may affect display readings which are at, or very close to, the high and low limits of the selected range. See Example #2 below and Technical Note 1 for more information). Examples The examples below illustrate how to configure the meter to perform some typical measurements. Recall that R3 and R7 must be set to their full clock- wise position before calibrating the meter. 1. Desired display readings are: 4mA = “0.000” 20mA = “3.000” Use DIP-switch setting #3 in Table 1 and enable decimal point DP2 by placing SW4 of switch S2 to ON. Apply 4mA and adjust R3 so the display reads “0.000”. Apply 20mA and adjust R7 so the display reads “3.000”. 2. Desired display readings are: 4mA = “0000” 20mA = “8600” Use DIP-switch setting #11. Apply 4mA and adjust R3 so the display reads “0000”. Apply 20mA and adjust R7 so the display reads “8600”. If the trans- mitter’s full-scale output is less than 20.0mA, it may not be possible to adjust R7 for a reading of “8600” with setting #11. If this occurs, select setting #12 ON ON 1 1 1 2 3 4 5 6 2 3 4 5 6 1 2 3 4 ON ON ON 1 1 1 2 3 4 5 6 2 3 4 5 6 1 2 3 4 ON S1 S2 S1 S2 ON ON 1 1 1 2 3 4 5 6 2 3 4 5 6 1 2 3 4 ON S1 S2 Table 1. DIP-Switch Settings ON ON 1 1 1 2 3 4 5 6 2 3 4 5 6 1 2 3 4 ON S1 S2 and re-calibrate both R3 and R7 to obtain “0000” and “8600”. Note that for these display readings no decimal points are used. Set SW3, SW4, SW5 and SW6 of switch S2 to OFF. 3. Desired display readings are: 4mA = “0000” 20mA = “10000” Use DIP-switch setting #13. Apply 4mA and adjust R3 so the display reads “0000”. Apply 20mA and adjust R7 so the display reads “10000”. For these display readings no decimal points are used. Set SW3, SW4, SW5 and SW6 of switch S2 to OFF. 4. Desired display readings are: 4mA = “.0000” 12mA = “.2500” This example is not as straightforward as the previous three. Notice that 12mA is exactly halfway between 4mA and 20mA. If we assume the input could go up to 20mA, the display reading would then be 2 x .2500 or “.5000”. From Table 1, select DIP-switch setting #7 and enable DP1 via SW3 of switch S2. Apply 4mA and adjust R3 so the display reads “.0000”. Apply 12mA and adjust R7 so the display reads “.2500”. Switch S1 Switch S2 Display Reading SW1 SW2 SW3 SW4 SW5 SW6 SW1 SW2 4mA 20mA 01. 0000 2250-2450 OFF ON ON ON OFF OFF ON ON 02. 0000 2450-2800 OFF ON ON ON OFF OFF OFF ON 03. 0000 2800-3200 OFF ON ON ON OFF OFF ON OFF 04. 0000 3200-3850 OFF ON ON ON OFF OFF OFF OFF 05. 0000 3850-4250 ON OFF ON ON OFF OFF ON ON 06. 0000 4250-4800 ON OFF ON ON OFF OFF OFF ON 07. 0000 4800-5500 ON OFF ON ON OFF OFF ON OFF 08. 0000 5500-6200 ON OFF ON ON OFF OFF OFF OFF 09. 0000 6200-6750 OFF OFF ON ON ON OFF ON ON 10. 0000 6750-7700 OFF OFF ON ON ON OFF OFF ON 11. 0000 7700-8600 ON ON OFF ON ON OFF ON ON 12. 0000 8600-9800 ON ON OFF ON ON OFF OFF ON 13. 0000 9800-10900 ON ON ON OFF OFF ON ON ON 14. 0000 10900-12000 ON ON ON OFF OFF ON OFF ON 15. 0000 12000-12800 ON OFF OFF ON OFF ON ON ON 16. 0000 12800-14000 ON OFF OFF ON OFF ON OFF ON 17. 0000 14000-15300 ON OFF ON OFF ON ON ON ON 18. 0000 15300-16300 ON OFF ON OFF ON ON OFF ON 19. 0000 16300-17600 OFF OFF ON OFF ON ON ON ON 20. 0000 17600-19999 OFF OFF ON OFF ON ON OFF ON |
Similar Part No. - DMS-BZL2 |
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Similar Description - DMS-BZL2 |
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