Digital Meter / Printer
Digital Meter Relay
MODEL 452A
■ Easy recognition of judgement results using 2-color display
■ Equipped with a second LED display for monitoring operating status trend
■ Output of the 4-point Comparison decision for high-low and zone judge
Model Designation
| 452A |  |
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1 |
2 |
3 |
4 |
5 |
6 |
1. Measuring input
| Code | Measuring range | Input impedance | Accuracy | Over load |
01 |
±19.999mV | 5MΩ | ±(0.05% of rdg + 5digit) | DC±50V |
V1 |
±100.00mV | |||
02 |
±199.99mV | 120kΩ | ±(0.05% of rdg + 3digit) | |
04 |
±1.9999 V | 1MΩ | ±(0.1% of rdg + 1digit) | DC±250V |
| ±19.999 V | 10MΩ | |||
| ±399.9 V | ±(0.1% of rdg + 3digit) | DC±750V | ||
06 |
±699.9 V | |||
11 |
±19.999 μA | 10kΩ | ±(0.05% of rdg + 3digit) | DC±2mA |
12 |
±199.99 μA | 1kΩ | DC±20mA | |
14 |
±1.9999 mA | 100Ω | ±(0.1% of rdg + 1digit) | DC±50mA |
| ±19.999 mA | 11Ω | DC±150mA | ||
| ±199.99 mA | 1Ω | DC±500mA | ||
49 |
DC1~5V | 1MΩ | DC±250V | |
| DC0~5V | ||||
| DC4~20mA | 12.4Ω | DC±150mA |
2. Power supply voltage
| Code | Power source voltage |
A |
AC100V~240V |
B |
DC12~24V |
C |
DC110V |
3. Power source for sensor(Floating output)
| Code | output voltage | output current |
Blank |
- |
|
2 |
DC5V±10% | 100mA |
3 |
DC12V±5% | 150mA *1 |
5 |
DC24V±5% | 100mA *2 |
| NOTE: | *1 100mA for the DC power supply |
| *2 50mA for the DC power supply |
4. Data output 1
| Code | Data output | Output impedance | Tolerable Load resistive |
Blank
|
- |
||
09
|
Analog output DC0~10V (Available scaling,Default:1~5V ) |
0.1Ω or less | 500Ω or more(DC1~5V) 1kΩ or more(DC0~10V) |
29
|
Analog output DC0~20mA (Available scaling,Default:4~20mA) |
5MΩ or more | 0~600Ω(DC4~20mA) |
BP
|
BCD output(TTL level positive logic) | - |
|
BN
|
BCD output(TTL level negative logic) | - |
|
DP
|
BCD output(transistor output,source type) | - |
|
DN |
BCD output(transistor output,sink type) | - |
|
E0 |
RS-232C | - |
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E1 |
RS-485 | - |
|
EC |
Decimal point external control | - |
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5. Data output 2
(Available- 09 and -29 of ④Data output 1 only)
| Code | Data output |
| Blank | No outout |
E0 |
RS-232C |
E1 |
RS-485 |
EC |
Decimal point external control |
6. Comparison output
| Code | specifications |
| Blank | Relay output |
TN |
Open collector output (NPN) |
Basic Specifications
| Display | 0~99999, “-” polarity, with zero-suppress function. Main display: red or green LED (character height 15.2mm) Sub-display: red LED (character height 7.6mm) Display data output, current value, peak memory, bottom memory, and display amplitude “PM” lights up at the peak memory display “BM” lights up at the bottom memory display. Both “PM” and “BM” lights up at the amplitude display |
| Scaling | Full-scale: -99999 to +99999 Offset: -99999 to +99999 |
| Display cycle | Selectable from 67ms, 400ms, 1s, 2s, 4s, 5s |
| Resolution | 1/100000 |
| Sampling rate | Approx. 15 times / sec. |
| Response | within 2 samplings or 1 display cycle, whichever longer |
| Input method | Single ended, floating input |
| A/D conversion | ⊿-∑ conversion method |
| Noise Rejection | Normalmode (NMR) - 50dB or more. Common mode (CMR) - 110dB or more. Noise through power supply line - 1000V (at AC voltage power supply) |
| Insulation Resistance | DC500V 100MΩor more. |
| Withstanding Voltage | Input terminals - Case : AC1500V each for 1 min. Power supply terminals - Case : AC1500V each for 1 min. Power supply terminals - Input and output terminals : AC500V each for 1min. I nput terminals - Output terminals : AC500V each for 1 min. |
| Power Supply | AC 100 to 240V (90-250V) 50/60HZ, DC12 to 24V (9-32V) |
| Power Consumption | 452A itself: Approx. 9VA at100V AC, 11.5VA at 200VAC, 400mA at 12V. 200mA at 24VDC. Power supply unit: Approx. 7VA at100V AC, 9VA at 200VAC, 200mA at 12V. 100mA at 24VDC. |
| Operating Temperature | 0 to 50℃ |
| Storage Temperature | -20 to 70℃ |
| Weight | Approx. 300g (60g of the power supply unit) |
| Housing protection | IP65 for the front panel, IP20 for the rear case, IP00 for terminals |
Operation Manual