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Yokogawa DM1B-015G-1C2A 4G2-005-0202
Product Introduction:
The DM1B-015G-1C2A is a digital multi-function panel meter from Yokogawa’s DM Series, configured for 4-20mA input, green LED display, 1 control output, and 2 alarm outputs. It features a 4-digit large 7-segment LED display for on-site process parameter display and simple control. The code 4G2-005-0202 is the complete order/configuration code for this instrument.
Detailed content
Configuration Code Breakdown (4G2-005-0202):
| Code Segment | Meaning |
|---|---|
| 4 | 4-digit display |
| G | Green LED |
| 2 | 2 alarm outputs |
| 005 | Specific configuration variant |
| 0202 | Production/serial batch code |
Technical Specifications:
| Parameter | Specification |
|---|---|
| Display Type | 4-digit 7-segment LED (Green, 14.2mm digit height) |
| Input Signal | 4-20mA DC (2-wire system) |
| Input Impedance | 250Ω |
| Measurement Range | Configurable via parameters (e.g., 0-100°C, 0-1000rpm, etc. with corresponding sensor) |
| Accuracy | ±0.1% FS (DC input) |
| Sampling Rate | Approximately 3 times/second |
| Control Output | 1 relay contact output (ON/OFF control) |
| Alarm Outputs | 2 relay contact outputs (upper limit / lower limit alarm) |
| Relay Capacity | 250V AC / 3A, 30V DC / 3A |
| Power Supply | 85-265V AC (50/60Hz) or 100-300V DC |
| Power Consumption | Approximately 3VA (AC supply) |
| Operating Temperature | 0°C to +50°C |
| Operating Humidity | 35% to 85% RH (non-condensing) |
| Installation Method | DIN rail / Panel recessed mount (48×96mm cutout) |
| Protection Rating | IP65 (front panel) |
Material Composition:
- Front Panel: Flame-retardant ABS resin (black)
- Housing: Cold-rolled steel plate, epoxy powder coating
- Terminals: Phosphor bronze with nickel plating
Structural Features:
- 48mm (W) × 96mm (H) × 82mm (D) standard panel dimensions
- Front panel with transparent protective cover for dust and water protection
- Top-mounted terminal block for rapid wiring
- Rear DIN rail mounting clips
Working Principle:
The DM1B-015G-1C2A receives the 4-20mA input signal, converts the current signal to a digital value via an internal A/D converter, performs engineering unit conversion, and displays the measured value on the 4-digit LED display. The instrument internally compares the measured value against user-set upper and lower limits; when the measured value exceeds the set range, the corresponding relay alarm output activates. The control output relay automatically switches state based on the set control mode (upper limit control, lower limit control, or deviation control), enabling simple process control.
Functional Features:
- Large digit height LED display (14.2mm), readable from up to 30m distance
- 1 control output + 2 alarm outputs: integrated display, control, and alarm in one unit
- Supports upper/lower limit alarm with adjustable hysteresis
- Parameters set via front panel push buttons, no special tools required
- Universal input, compatible with multiple sensor types (external signal conversion required)
Advantages & Highlights:
- Extremely high cost-performance ratio, ideal for high-volume OEM integration
- Green LED display, clearly visible in low-light environments
- Dual mounting modes: panel mount + DIN rail, flexible installation
- Relay outputs can directly drive solenoid valves, pumps, and other actuators
- No external power required (powered by input signal loop in some configurations)
Applicable Industries:
- Machinery speed/count display
- Simple temperature/pressure local display
- Liquid level display with high/low level alarm
- Flow totalization display with alarm
- General industrial parameter monitoring
Installation Requirements:
- Panel cutout dimensions: 45mm × 92mm (DIN 48×96 standard)
- Installation depth: ensure minimum 60mm clearance behind the unit for wiring
- 4-20mA input wiring: use shielded twisted pair cable, ground shield at one end only
- External power wiring (if used): 1.0mm² or larger conductors
- Grounding terminal must be reliably connected to earth ground
Usage Precautions:
- Input signal must be 4-20mA only; never connect voltage signals, as this may damage the instrument
- Relay outputs must not be used for inductive loads (e.g., direct motor driving); install surge suppressors
- Clean front panel regularly to prevent dust from obscuring the display
- Parameter changes require power cycle to take effect
- Avoid use in high-vibration environments; vibration affects LED display stability
