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DMS-40LCD-4/20S Series
Ultra-Low 2.9V Loop-Drop 4? Digit
LCD Display Process Monitor
and re-calibrate both R3 and R7 to obtain “0000” and “8600”. Note that
Switch S2
for these display readings no decimal points are used. Set SW3, SW4,
SW3
SW4
SW5
SW6
SW5 and SW6 of switch S2 to OFF.
DP1
DP2
DP3
DP4
3. Desired display readings are:
S1
S2
4mA = “0000”
ON
ON
20mA = “10000”
1
2
3
4
5
6
1
2
3
4
OPERATING AND SETUP INSTRUCTIONS
The following procedure must be performed as the ?rst re-calibration step
every time DIP-switches S1 and S2 are recon?gured to select a new display
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.
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
4. Desired display readings are:
4mA = “.0000”
S1 S2
ON ON
far as they will go to their designated ON (closed) or OFF (open) positions.
12mA = “.2500”
1
2
3
4
5
6
1
2
3
4
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
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”.
Table 1. DIP-Switch Settings
2 and 3 to make sure the adjustments did not affect one another.
Switch S1
Switch S2
4. If necessary, select the appropriate decimal point by setting either
Display Reading
SW1
SW2
SW3
SW4
SW5
SW6 SW1 SW2
SW3, SW4, SW5, or SW6 of S2 to ON (DP1, DP2, DP3, or DP4,
4mA
20mA
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 con?gure 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.
01.
02.
03.
04.
05.
06.
07.
08.
09.
0000
0000
0000
0000
0000
0000
0000
0000
0000
2250-2450
2450-2800
2800-3200
3200-3850
3850-4250
4250-4800
4800-5500
5500-6200
6200-6750
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
1. Desired display readings are:
S1
S2
10.
0000
6750-7700
OFF
OFF
ON
ON
ON
OFF
OFF
ON
ON
ON
4mA = “0.000”
11.
0000
7700-8600
ON
ON
OFF
ON
ON
OFF
ON
ON
20mA = “3.000”
1
2
3
4
5
6
1
2
3
4
12.
0000
8600-9800
ON
ON
OFF
ON
ON
OFF
OFF
ON
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”.
13.
14.
15.
0000
0000
0000
9800-10900
10900-12000
12000-12800
ON
ON
ON
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
ON
2. Desired display readings are:
4mA = “0000”
S1
ON
S2
ON
16.
17.
0000
0000
12800-14000
14000-15300
ON
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
ON
20mA = “8600”
1
2
3
4
5
6
1
2
3
4
18.
0000
15300-16300
ON
OFF
ON
OFF
ON
ON
OFF
ON
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-
19.
20.
0000
0000
16300-17600 OFF
17600-19999 OFF
OFF
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
OFF
ON
ON
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
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MPM_DMS401LCD-420S.D02 Page 3 of 5
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相关代理商/技术参数
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功能描述:数字面板表 4.5 Digit +-2V Input Std Green RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM
DMS-40PC-1-GS-C
功能描述:数字面板表 4.5 Digit +-2V Input Std Green RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM
DMS-40PC-1-RH
功能描述:数字面板表 4.5 Digit +-2V Input Hi-Intense Red RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM
DMS-40PC-1-RH-C
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DMS-40PC-1-RL
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