■Meaning of warning mark
■Caution marks
(1)The application of voltage or current exceeding its maximum
allowable value to the input terminals may result in instrument
damage.
(2)The supply of power out of its allowable range may cause fire,
electric shock or instrument failure.
(3)The content of this manual may subject to change without prior
notice for product improvement.
(4)This manual is carefully prepared. However, if any question
arises, or any mistake, omission or suggestion is found in the
content of this manual, contact your nearest our sales agent.
(5)Make this manual available easily anytime.
1.Outline
The AP-212 digital meter relay is a scaling meter with the 2-step
setting analog comparator function. It is provided with the
output of 2-stage relays and analog signal as the standard
specification. It has case dimensions of 48mm×24mm conforming
to DIN Standard and is driven by a power supply voltage of 24V
DC.
Its display uses 7-segment LEDs with a character height of 8mm
with a maximum display of 1999.
２.
Specifications
■Instrumentation signal input
(DC voltage measurement)
Accuracy：±(0.1% of rdg +2digit)(23℃±5℃、35 to 85%RH)
■Instrumentation signal input
(DC current measurement)
Accuracy：±(0.1% of rdg +2digit)(23℃±5℃、35 to 85%RH)
■DC voltage measurement
Accuracy：±(0.1% of rdg +2digit)(23℃±5℃、35 to 85%RH)
■DC current measurement
Accuracy：±(0.2% of rdg +2digit)(23℃±5℃、35 to 85%RH)
However, only for the AM-212-25: ±(0.3% of rdg +1digit)
*In the internal resistance column: Externally mounted.
■Model No. configuration
Example:
Model/Range
code
Measuring
range
Display
Input
impedance
Max. allowable
input voltage
AM-212-1V
1 to 5V
Offset ±1000
Fullscale
100 to 1999
Approx.1MΩ
±250V
Model/Range
code
Measuring
range
Display
Input
resistance
Max.
allowable
input current
AM-212-2A
4 to 20mA
Offset ±1000
Fullscale
100 to 1999
51Ω
±70mA
Model/Range
code
Measuring
range
Display
Input
impedance
Max. allowable
input voltage
AM-212-11
±199.9mV
Offset ±1000
Fullscale
±100 to 1999
100MΩ
±100V
AM-212-12
±1.999V
10MΩ
±250V
AM-212-13
±19.99V
10MΩ
±250V
AM-212-14
±199.9V
10MΩ
±500V
Model/Range
code
Measuring
range
Display
Input
resistance
Max. allowable
input current
AM-212-21
±199.9μA
Offset ±1000
Fullscale
±100 to 1999
1kΩ
±10mA
AM-212-22
±1.999mA
100Ω
±50mA
AM-212-23
±19.99mA
10Ω
±150mA
AM-212-24
±199.9mA
※1Ω
±500mA
AM-212-25
±1.999A
※0.1Ω
±3A
DIGITAL METER RELAY
INSTRUCTION MANUAL
MODEL AM-212 SERIES
Precautions
This mark indicates that if the meter is
operated incorrectly, death or serious
injury may result.
WARNING
Do not disassemble the meter or touch the components
and parts inside the meter with the power turned on
or input connected.
CAUTION
The mark on the label indicates the measuring range
in Item 2. Specifications.
Caution required when the AM-212 is used on equipment conforming
to EN/IEC Standards!
For the AM-212 with an input signal of more than 70VDC, connect its
HOLD and ANALOG out terminals to the equipments whose foundation
is isolated.
WATANABE ELECTRIC INDUSTRY CO., LTD.
