3.2 Decimal point setting
Prior to factory shipment, the decimal point of this meter is so
set that its position corresponding to the 10
1
digit is lit, change
the position of the decimal point by referring to the following
figure.
4. Calibration
In order to calibrate the meter, a current generator with an accuracy
of ±0.01% or more is required. This calibration is conducted in
the same manner as 3.1 Scaling adjustment.
5. Specifications
Model
Measuring
range
Display
Max. allowable
input current
AL-512
4 to 20mA DC
Offset;±200
Fullscale;
100 to 1999
±50mA
Accuracy: ±(0.1% of FS +1 digit)(23℃±5℃ and 35 to 85% RH)
Measurement function
： Measurement of instrumentation
signal(4 to 20mA DC)
Operation
：Double integral type
Maximum display
：1999
Sampling speed
：2.5 times／sec.(TYP)
Noise rejection ratio ：NMR 40dB (TYP)
Temperature
characteristics
：Offset displayed-value:
±0.3 digit/℃
Fullscale displayed-value:
±0.3 digit/℃
Overrange warning
：For an input of more than 1999, “1”
is displayed in the most
significant digit and the lower 3
digits go out.
Variable span of
fullscale
：100 to 1999
Variable span of
offset
：±200
Voltage drop
：5V at an input of 4mA(TYP)
5.3V at an input of 20mA(TYP)
Display
：7-segment LEDs (Red light emitting
diode numeric elements)
Character height, 14.2mm
Polarity display
：”-“ is automatically displayed
when the computation result is
minus.
External control
：None
Operating temperature
/humidity range
：0 to 50℃/ 35 to 85%RH
Power supply
：None (Driven by input signal)
Dielectric strength
：Between input terminal (LO) and E
terminal; For 1 min. at 500V DC
Dimensions
：96(W)×48(H)×22(D)mm
Weight
：Approx 55g
Accessory
：Screw terminal cover 1 pc.
Instruction manual 1 copy
Conformity standard
：EN61326-1: 2006
6. Dimensions
7. Warranty and After Sales Service
7.1 Warranty
The warranty lasts for one year from the date of delivery. If this
product fails during this period and the reason is considered to
be clearly.
The manufacturer warrants to the original retail customer its
indicator to be free of defects in material and workmanship for
use under normal care and will repair or replace any
7.2 After Sales Service
Under strict quality control measures, this product was
manufactured, tested, inspected and shipped. Should a defect in
manufacture or Workmanship be identified, please return the
product to our distributor or directly to us. It would be highly
appreciated if you could give a detailed account of the fault and
enclose it with the product.
Model AL-512 Series ED-49982c
WATANABE ELECTRIC INDUSTRY CO., LTD.
6-16-19, Jingumae, Shibuya-ku, Tokyo 150-0001, Japan
Phone: (81)3-3400-6140
Homepage http://en.watanabe-electric.co.jp/
ASAHI KEIKI DIVISION
WATANABE ELECTRIC INDUSTRY CO., LTD.
6-16-19, Jingumae, Shibuya-ku, Tokyo 150-0001, Japan
Phone: (81)3-3400-6141
Homepage http://www.watanabe-electric.co.jp/en/
