Digital Indicator Digital Indicator AG500 product photo
CE, UL, C-Tick, RoHS
Input type
Temperatue, DC Current, DC Low Voltage Group
Thermocouple K, J, T, S, R, E, B, N, PLII, W5Re/W26Re, U, L
RTD Pt100, JPt100
DC Low voltage 0 to 10mV, 0 to 100mV, 0 to 1V, -10 to +10mV
-100 to +100mV
DC Current 0 to 20mA, 4 to 20mA

DC High Voltage Group
DC High voltage 0 to5V, 0 to 10V, 1 to 5V, -1 to +1V

* Use dip switch to change input group.
a) Thermocouple
Type K, J, T, E, PLII, U, L : Less than -100°C : ±1.0°C
-100 to +500°C : ±0.5°C
More than 500°C :
±(0.1% of reading + 1digit)
Type N, S, R, W5Re/W26Re : Less than 0°C : ±2.0°C
0 to 1000°C : ±1.0°C
More than 1000°C :
±(0.1% of reading + 1digit)
Type B : Less than 400°C : ±70.0°C
400 to 1000°C : ±(1.4°C +1digit)
More than 1000°C :
±(0.1% of reading + 1digit)
b) RTD
Less than 200°C : ±0.2°C
More than 200°C : ±(0.1% of reading + 1digit)
c) DC Voltage and DC Current
±(0.1% of span)
Cold junction temperature
compensation error
±1.0°C (Between 5 and 40°C)
±1.5°C (Between -10 and 5°C, Between 40 and 50°C)
Sampling time 0.25 sec
Input impedance a) DC High voltage : Approx 1MW
b) Temperature, DC Low voltage : Approx More than 1MW
c) DC Current : Approx 50W
Sensor current Approx 250mA (RTD input)
Influence of external
Approx 0.2mV/W (Thermocouple input)
Influence of lead
Approx 0.01%/W of Reading (Maximum 10W per wire)
PV bias -span to +span
PV ratio 0.500 to 1.500
Input digital filter 0.1 to 100.0 sec. (OFF when 0 is set.)
Input break action a) Thermocouple input : Up scale/Down scale (Selectable)
b) RTD input : Up sacale
c) Low voltage input : Up scale/Down scale (Selectable)
d) High voltage input : Value around 0V
e) Current input : Value around 0mA
Input short action Down scale (RTD input)
Hold function
Peak hold Highest measured value is held
Bottom hold Lowest measured value is held
· The held values can be reset manually, by external contact signal or by communication after the confirmation by the operator.
· Data is not backed up when the instrument power supply is off.
Display digit 5-digits (The most significant digit : -1 or 1)
Flashing function Flashing display at input error or event occurrence
· Settable flashing function from each event 1 to 6.
Alarm function (Optional)
Number of alarms Up to 6 points
· With 12V DC sensor power supply : Up to 5 points
· With 24V DC sensor power supply : Up to 2 points
Alarm type Process High, Process low
· Hold action is available.
Alarm output Relay contact output, Form a contact
250V AC 3A, 30V DC 1A (Resistive load)
· Electric life : 300,000 cycles or more
Differential gap 0 to input span
Delay timer 0.0 to 600.0 sec
Interlock (latch)
Interlock (latch) function is configurable.
Energized/de-energized action is configurable.
Digital Input (Optional)
Nunber of inputs 2 points (DI1 and DI2)
Input method Non-voltage contact input
a) OPEN : 500kW or more
b) CLOSE : 500W or less
Determination time 50 ms
Function a) DI1 : Hold reset
b) DI2 : Alarm interlock reset
Analog Retransmission Output (AO) (Optional)
Output signal a) 0 to 1V DC, 0 to 5V DC, 1 to 5V DC, 0 to 10V DC
· Load resistance : More than 1kW
· Output impedance : Less than 0.1W
b) 0 to 10mV DC, 0 to 100mV DC
· Load resistance : More than 20kW
· Output impedance : 10W
c) 4 to 20mA DC, 0 to 20mA DC
· Load resistance : Less than 600W
· Output impedance : More than 1MW
Output type Measured value (PV)
Output accuracy ±0.1% of span
Output resolution More than 12 bits
Communication (Optional)
RS-485 (2-wire), RS-422A (4-wire)
Protocol a) ANSI X3.28 sub-category 2.5A4 (RKC standard)
· Selectable
Start-stop synchronous type
1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps
Bit format Start bit :1
Data bit : 7 or 8 (For MODBUS 8 bit only)
Parity bit : 1 (odd or even) or none
Stop bit : 1 or 2
31 units
data digits
7 or 6 digits
Sensor Power Supply (Optional)
Output voltage 24V DC ±1.2V or 12V DC ±1V
Output current 24V DC type : Less than 24mA DC
12V DC type : Less than 20mA DC
Load resistance 24V DC type : More than 1kW
12V DC type : More than 600W
· When 12V DC ( For sensor power supply/LED drive supply) is used, alarm output is max. 5 points.
· When 24V DC (Sensor power supply) is used, alarm output is max. 2 points.
General Specifications
Waterproof/Dustproof NEMA4X, IP66
· Waterproof/Dustproof protection only effective from the front in panel mounted installation.
Supply voltage a) 90 to 264V AC (50/60Hz) Rating : 100 to 240V AC
b) 21.6 to 26.4V AC (50/60Hz) Rating : 24V AC
c) 21.6 to 26.4V DC Rating : 24V DC
Power consumption
a) At 100V AC :
At 240V AC :
Less than 7.0VA
Less than 10.8VA
b) At 24V AC : Less than 7.6VA
c) At 24V DC : Less than 230mA
Memory backup Backed up by non-volatile memory (FRAM)
· Data retaining period : Approx. 10 years
· Number of writing : Approx. 10 billion times.
(Depending on storage and operating conditions.)
Insulation resistance More than 20MW (500V DC) between measured terminals and ground
More than 20MW (500V DC) between power terminals and ground
More than 20MW (500V DC) between power terminals and measured terminals
Dielectric voltage 1500V AC for one minute between measured terminals and ground
1500V AC for one minute between power terminals and ground
Power failure A power failure of 20m sec or less will not affect the action. If power failure of more than 20m sec occurs, indicator will restart.
Weight Approx. 190g
Ambient temperature -10 to +50°C
Ambient humidity 5 to 95% RH (Non condensing)
Absolute humidity : MAX. W.C 29g/m3 dry air at 101.3kPa
Compliance with Standards
CE Marking
LVD EN61010-1
Class II (Reinforced insulation)
EMC EN61326
UL UL 61010-1
C-UL CAN/CSA-C22.2 No.61010-1

Red Mark Bright, Easy-to-Read Oversized LED Displays Digital Indicator AG500
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Red Mark AG500 top page Blue Mark Input range table Blue Mark External Dimensions
Blue Mark Installation Manual >>> IMR02F06E1.pdf (345KB)
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