Specifications

DC Ammeters
Mechanical Indicators
43
Specifications
Size (width ✕ height) mm
Model name
Operation principle
Accuracy (grade)
Scale length (mm)
Weight (kg)
Indicator rating and delivery period classification
Direct indicator
Note 1
100mA
200mA
300mA
500mA
1mA
3mA
5mA
10mA
20mA
50, 100mA
200, 500mA
1, 2, 5, 7.5A
10, 15, 20,
30A
1A~7500A
With lead wire
adjustment
resistor
Special
specification
Rectangular indicators
64✕60
YM-206NDA
Page with outer dimensions drawing
Delivery
period












Maximum scale
value
Combined
with shunt
Wide-angle indicators
L-N Series
Y-2N Series Y-N Series
55
0.07
85✕75
YM-208NDA
70
0.1
100✕85
YM-210NDA
85
0.1
82✕82
YM-8NDA
70
0.1
102✕102
YM-10NDA
90
0.15
122✕122
YM-12NDA
100
0.3
80✕80
LM-80NDA
2.5
124
0.3
110✕110
LM-110NDA
1.5
175
0.4
Movable coil
2.5
2000Ω
1200Ω
1000Ω
730Ω
200Ω
70Ω
8Ω
2Ω
0.8Ω
60mV
60mV, 100mV
(consumption current: approx. 20mA)
Manufacturable
35
2000Ω
1200Ω
1000Ω
730Ω
200Ω
70Ω
8Ω
2Ω
0.8Ω
Internal resistance (Ω) or voltage drop
5000Ω
5000Ω
1550Ω
780Ω
250Ω
85Ω
50Ω
25Ω
0.8Ω
—
—
920Ω
580Ω
180Ω
60Ω
8Ω
60mV
60mV, 100mV
(consumption current: approx. 5mA)
Manufacturable
37
60mV
60mV, 100mV
(consumption current: approx. 20mA)
Manufacturable
36
Movable coil
2.5 1.5
Movable coil
Standard
product
Immediate delivery
 Quasi-standard
product
Within 20 days
Special
product
21 to 60 days
Symbol
Reference delivery period
Delivery period classification
Note 2 Note 2 Note 2
Note 1.
Note 2.
The operating circuit voltage is 300V or less with the Y-2N Series, and 600V or less with the Y-N Series and L-N Series.
In the case of combined use with a shunt, refer to “DC Ammeter Combined with Shunt” on p.44, and specify the lead
wire thickness and one-way length or round-trip resistance.
LM-110NDAYM-8NDAYM-206NDA
Remarks
(1) In the case of a bidirectional deflection indicator, determine the
specifications according to the following.
• Direct-rating models can be manufactured if the larger of the
left and right scales is 30A or less.
• For combined use with a shunt, select a scale so that the
sum of the absolute values of the indicator ratings is 60mV or
more.
Example:
In the case of a shunt with ratings of 100A and 60mV
Ammeter scale -50~0~+100A
Ammeter rating -30~0~+60mV
(Sum of absolute values=90mV≥60mV)
(2) Refer to “Receiving Indicators” on p.67 concerning zero-
suppressed indicators.
(3) Please make sure to read the “Safety Precautions” (pp.5-8)
and the “Selection Precautions” (p.9) to assist in selecting the
model and use specifications suited to the application.
Connection diagrams
Load
Lead wire with specified
resistance value
Shunt
Load
The items in must be specified.
Indicator combined with shunt
Model name
Model name
Indicator rating
Scale
Scale
Cover type
Cover type
Shunt rating +
required/not required
With lead wire adjustment
resistor
Special specifications
Special specifications
Number of
units
Thickness and length of lead
wire + required/not-required
Direct indicators
YM-206NDA
YM-206NDA
10
Number of
units
10
60mV
B
B
0-20A
0-200A
Double scale, colored
lines, etc.
Double scale, colored
lines, etc.
lead wire 3.5mm
2
3m,
not required
VR
SHT 200A 60mV,
required
Ordering method
Fig. 1 DC ammeter (direct) load Fig. 2 DC ammeter (combined with shunt)