WATANABE ELECTRIC INDUSTRY AM-212 Series Instruction Manual

DIGITAL METER RELAY
MODEL AM-212 SERIES
INSTRUCTION MANUAL
■Meaning of warning mark
WARNING
■Caution marks
The mark on the label indicates the measuring range
in Item 2. Specifications.
Do not disassemble the meter or touch the components
and parts inside the meter with the power turned on
or input connected.
Precautions
(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.
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.
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.
This mark indicates that if the meter is
operated incorrectly, death or serious
injury may result.
CAUTION
WATANABE ELECTRIC INDUSTRY CO., LTD.
２.Specifications
■Instrumentation signal input
(DC voltage measurement)
Model/Range Measuring
code range
Offset ±1000
AM-212-1V 1 to 5V Fullscale
100 to 1999
Accuracy：±(0.1% of rdg +2digit)(23℃±5℃、35 to 85%RH)
■Instrumentation signal input
(DC current measurement)
Model/Range Measuring
code range
Offset ±1000
AM-212-2A 4 to 20mA Fullscale
100 to 1999
Accuracy：±(0.1% of rdg +2digit)(23℃±5℃、35 to 85%RH)
■DC voltage measurement
Model/Range Measuring
code range
AM-212-11 ±199.9mV
AM-212-12 ±1.999V
AM-212-13 ±19.99V Fullscale
±100 to 1999
AM-212-14 ±199.9V
Accuracy：±(0.1% of rdg +2digit)(23℃±5℃、35 to 85%RH)
■DC current measurement
Model/Range Measuring
code range
AM-212-21 ±199.9μA
Offset ±1000
AM-212-22 ±1.999mA
AM-212-23 ±19.99mA
Fullscale
AM-212-24 ±199.9mA
±100 to 1999
AM-212-25 ±1.999A
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:
Input Max. allowable
Display
impedance input voltage
Approx.1MΩ
Input
Display
resistance
input current
51Ω
Input
Max. allowable
Display
impedance input voltage
100MΩ
Offset ±1000
10MΩ
10MΩ
10MΩ
Input Max. allowable
Display
resistance input current
1kΩ
100Ω
10Ω
※1Ω
※0.1Ω
±250V
Max.
allowable
±70mA
±100V
±250V
±250V
±500V
±10mA
±50mA
±150mA
±500mA
±3A