Digital Meter
Digital Large Waterproof Display Meter
MODEL 4027, 4028
- ■ Smart design
- ■ Safe waterproof type. (IP65)
- ■ 60mm high brightness dot matrix LED for clear display
- ■ Wall or hanging-mount available.
Standard Specifications
Model Designation
| 402 | □-□ | - | □ | - | □ | - | □ |
| └①┘ | ② | ③ | ④ |
①Measuring Input
| Code | Measuring Range （type of input） |
Display Range/Input Resistance | Accuracy* |
|---|---|---|---|
| 7-02 | -200 to 999°C（K） | -270 to 999°C | ±（0.3% of rdg. + 1°C） |
| 7-04 | 40 to 750°C（J） | -210 to 999°C | ±（0.3% of rdg. + 1°C） |
| 7-05 | -200 to 350°C（T） | -270 to 420°C | ±（0.3% of rdg. + 1°C） |
| 7-11 | -200 to 850°C（PT100Ω） | -200 to 870°C | ±（0.4% of rdg. + 1°C） |
| 7-12 | -99.9 to 99.9°C（PT100Ω） | -99.9 to 99.9°C | ±（0.2% of rdg. + 0.3°C） |
| 8-03 | ±999 mV（DC V） | 1 MΩ | ±（0.1% of rdg. + 1 digit） |
| 8-04 | ±9.99 V（DC V） | 1 MΩ | ±（0.1% of rdg. + 1 digit） |
| 8-09 | 1 to 5 V | 1 MΩ | ±（0.1% of rdg. + 2 digit） |
| 8-19 | 4 to 20 mA | 12.5 Ω | ±（0.1% of rdg. + 2 digit） |
- *Accuracy:
- Defined at 23 ± 5°C, 45 to 75% RH.
- Temperature coefficient:
- ± 300 ppm/°C (K,J,T), ± 200 ppm/°C (Pt), ± 100 ppm/°C (-03), ± 150 ppm/°C (-04, -09, -19)
- Operating temperature range:
- -10 to 50 °C
- Overload:
- DC ± 10 V (K,J,T,Pt), DC ± 250 V (-03, -04, -09), DC ± 150 mA (-19)
- Calibration:
- JIS C-1602-2015 standard thermoelectric power mV (K,J,T)
JIS C-1604-2013 standard resistance element resistance values (Pt)
②Power Supply
| Code | Content |
|---|---|
| A | AC 100 to 240 V |
| 9 | DC 24 V |
③Mounting method / Sensor (only for RTD input)
| Code | Mounting method | Sensor | Protection rate |
|---|---|---|---|
| 51 | Wall-hanging | Sensor not included | IP55 equivalent |
| 52 | Suspending | ||
| 53 | Wall surface mounting | IP65 equivalent | |
| 61* | Wall-hanging | Integrated sensor type | IP55 equivalent |
| 62* | Suspending | ||
| 63* | Wall surface mounting | IP65 equivalent |
* Set with sensor
④Optional Function
| Code | Function |
|---|---|
| X | Peak hold |
| A01 | Bottom hold |
| A02 | Burnout (min. value flashes)* |
* Sensors of K,J,T only
General Specifications
| Display | 3 digits 0 to 999 High brightness large LED (character height 60 mm) in Red Zero suppression function is equipped. |
|---|---|
| Polarity display (POL) | " - " is displayed. |
| Over-range display | Temperature input: Min. or Max. value of display range flashes. DC input: Value of 130% of display range flashes. But 000 flahes, when it exceeds 999. |
| Decimal point | Temperature input: Fixed point DC input: Arbitrary setting |
| Burnout | Max. value of display range flashes. (only for temperature input) |
| Resolution | Thermocouple input: 1 ℃ RTD input: 1 ℃ or 0.1 ℃ DC input: 1/1000 |
| External resistance | Thermocouple input: less than 500 Ω RTD input: Lead wire line less than 5 Ω |
| Display cycle | Temperature input: Approx. 5 times/s. DC input: Approx. 15 times/s. |
| Protection rate | Wall-hanging and suspending installation: IP55 equivalent Wall surface mounting installation: IP65 equivalent |
| Input configuration | Single ended input |
| A/D conversion | Δ-∑ conversion system |
| Noise rejection rate | Normal mode (NMR): more than 50 dB Common mode (CMR): more than 110 dB Power line mixed noise: 1000 V |
| Insulation resistance | DC 500 V More than 50 MΩ |
| Withstand voltage | Between input terminal and outer case: AC 1500 V 1min. Between power supply terminal and outer case: AC 1500 V 1min. Between power supply terminal and input terminal: AC 1500 V 1min. (DC power supply model: AC500 1min.) |
| Power supply | AC 100 to 240 V, (50/60Hz) DC 24 V |
| Power supply voltage tolerance | AC 85 to 250 V DC 20 to 30 V |
| Power consumption | AC 100 V approx. 7 VA AC 200 V approx. 9 VA DC 24 V approx. 100 mA |
| Operating ambient temperature | -10 to 50°C |
| Storage temperature | -20 to 70°C |
| Weight | Approx. 1.5 kg |
| Unit display | Attached on front panel. ("℃" unit is attachd for 4027, Required unit can be attched for 4028, please specify at the order.) |
