３.
General specifications
■Measurement block
■
Comparison block specifications
■
Common specifications
４．Mounting
4-1 Mounting
1)Mounting the meter on mounting panel
Drill the hole as shown in Fig.1 through the mounting panel, then
insert the meter into the mounting panel through the hole from
the front.
Recommended panel thickness: 0.8 to 3.5mm
4-2 Connector connection
1)Power supply connection
Connect the power supply between the zno.9 (0V) and No.10 (+24V)
terminals on the lower connector. Use the meter at a power supply
voltage of 24V DC+20%. (As this meter is not provided with a power
supply switch, the meter is ready to operate just when the power
is turned on.)
2)Connect the input signal between the HI (No.1) and LO (No.2)
terminals on the upper connector.
Measurement function
：Specify one Model from among DC voltage
and current measurement Model Nos.
Operation type
：Double integral
Input circuit
：Single-ended
Input bias current
：2nA(TYP)
Sampling speed
：2.5 times/sec
Noise rejection ratio
：NMR40dB TYP (50/60Hz)
Temperature
characteristics
：Offset displayed-value:
Within ±0.3digit/℃
Fullscale displayed-value
Within ±0.3digit/℃
Overrange warning
：”1999” flashes for input signal
exceeding the maximum display.
Fullscale variable
range
：100 to 1999
Offset variable range
：±1000
Span
：2000 counts
Display
：LEDs(Light Emitting Diodes, Numeric
elements)
Character height;8mm(red)
Polarity display
：：”－” is automatically displayed when
the measurement result is minus.
External control
：・Scaling function：
Set by the multi-rotating variable
resistor on the front surface.
・External hold：
0V signal or contact signal (shorting)
・External start：
Positive pulse of +5V for more than 1ms
from 0V or contact signal (open)
・Decimal point：
The position of the decimal point can
be freely set by the stud pin on the
front surface.
Analog output
：0 to ±2V
Load resistance; More than 1kΩ
Control method
：Analog comparator
Comparison setting
range
： 100 to +1999(for both high and low
limits)
However for offset display, the offset
value becomes the minimum value of the
setpoint.
Comparison setting
accuracy
：Setpoint ±2digit(23℃±5℃)(TYP)
Setting
: Set by selector switch.
Set by the multi-rotating variable
resistors for both HI and LO.
Comparison output
relays
：Relay output for HI and LO;
250V AC, 0.1A Max. Resistive load
120V AC 0.5A MAX. Resistive load
28V DC 1A MAX. Resistive load
Mechanical service life;
More than 5 million times
Electrical service life;
More than 100,000 times
(at rated load)
Comparison operation
indication
：For both HI and LO;
Red LEDs on the front surface light.
Comparison conditions ：For HI;
High-limit setpoint≦Displayed value
For LO;
Low-limit setpoint> Displayed value
Hysteresis
：None
Response
：5ms(TYP)
Dielectric strength
：Between power supply terminal (0V) and
input terminal (LO);
For 1 min. at 500V DC
Between input terminal (LO) and case;
For 1 min. at 1500V AC
Insulation resistance
： Between each terminal described
above; More than 100MΩ at 500V DC
Operating temperature/
humidity range
：0 to 50℃/
35 to 85％RH（No-condensing）
Power supply voltage
：24V DC
Allowable voltage
variation range
：24V DC±20%
Consuming current
：35mA(TYP)(At 24V DC)
Dimensions
：48(W)×24(H)×87(D)DIN size
Weight
：Approx. 55g(Only for the mainframe)
Accessories
：Instruction manual 1 copy
Connectors 2 pcs.
Scaling label 1 sheet
Others
：If you need to display engineering
units, please contact us.
Compliance standard
：EN61326-1/2006
EMI:Class A
EMS:Industrial locations
※Cable length: 30m or less
※In the case of DC drive DC power
Supply port: DC connections
between parts of equipment
EN61010-1:2001
Mounting environment
：Mounting category Ⅱ
Pollution level 2 (IEC1010-1)
Mounting altitude
：Lower than 2000m
Fuse
：MC3/10. 125V, 0.3A
Quick blow type
MODEL AM-212 Series
(2/4)
WATANABE ELECTRIC INDUSTRY CO., LTD.
