Hakaru
Hakaru DP311M Digital Panel Meter Resistance Thermometer

Manufacturer: HAKARU PLUS CORPORATION
Model: DP311M
96 × 48, 3 1/2 digits, Display only, with input–power supply isolation
Model
DP311M-(1)-(2)
Measuring Sensor Temperature Range
| Code | Description |
|---|---|
| 11 | Pt100Ω, -100 to +199.9°C |
(1) Power Supply
| Code | Description |
|---|---|
| 3 | AC100V, 90 to 132V |
| 5 | AC200V, 180 to 264V |
| 9 | DC24V ±10% |
(2) Display Color
| Code | Description |
|---|---|
| No code | Red LED |
| G | Green LED |
How to Order Example
Model: DP311M-3-G
Special Specification:
Device Specifications
Mounting: Panel-embedded type
Housing: Black plastic
Wiring connection: M3 screw terminal
Display Section
- Numeric range: 0 to 1999
- Display element: Red LED or green LED, digit height 14.2mm
- Negative input: “−” display
- Input overrange: 1□□□ display, where □ indicates blank
Scaling function: None
Hold: Data is held when the HOLD screw terminal and COM screw terminal are shorted.
Resolution: 0.1°C
Sampling period: Approx. 2.5 times/second
Isolation: Between input and power supply
Input type: Single-ended floating input
A/D conversion section: Double integration method
Unit seal: Included
Installation Specifications
Power supply:
- AC power supply: AC90 to 132V, AC180 to 264V, 50/60Hz, approx. 2VA
- DC power supply: DC24V ±10%, 70mA
- DC12V ±10%, 200mA
- DC5V ±10%, 500mA
Power consumption:
- AC90 to 132V, AC180 to 264V: Approx. 2VA
- DC24V: 70mA
Operating temperature range: 0 to 50°C
Storage temperature: -20 to 70°C
Dimensions: W96 × H48 × D90
Mass: AC power supply approx. 290g, DC power supply approx. 190g
Performance
Reference accuracy:
| Type / Measuring Range | Reference Accuracy Displayed as % of Reading Value |
|---|---|
| Pt100Ω -100.0 to 199.9°C | ±(0.2% +0.3°C), -100 to 0°C |
| ±(0.2% +0.2°C), 0 to 199°C |
Temperature coefficient: ±200ppm/°C
Noise rejection ratio:
- Normal mode: 40dB or more
- Common mode: 110dB or more
Insulation resistance: DC500V, 100MΩ or more
Dielectric strength:
- Between input and external case: AC1500V for 1 minute
- Between power supply and external case: AC1500V for 1 minute
- Between input and power supply: AC1500V for 1 minute, AC power supply
- Between input and power supply: AC500V for 1 minute, DC power supply
Connection Diagram

Outline Drawing
Mounting Dimensions Drawing (Unit: mm)
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