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DH2 Free Range Type Isolator
Brand: Yokogawa Electric Corporation
The DH2 is a nest-mounting type DCS-supported isolator that converts DC current or DC voltage signals into isolated DC current or DC voltage signals.
Features- On-site zero/span adjustment and I/O monitoring etc. can be performed from the host system or a handy terminal via the communication interface
Specifications
Accuracy
- ± 0.1 % of Span
Consumption
- 50 mA at 24 Vdc (1-5 V)
- 80 mA at 24 Vdc (4-20 mA)
Current
- 0.1 to 50 mA DC to Span
- 1-24 mA DC - Span
Electrical Connectors
- M4 Screw Terminal
Humidity
- 5 to 90 % RH, Non-Condensing
Input
- 0-50 mA DC
- -30 to 30 Vdc
- 70 mA DC or Less - Current Input
- Within ± 15 Vdc - Voltage Input
Input Signal
- 0-20 mA DC, Span is 0.1 mA or more - Input Signal Code B
- 0-50 mA DC, Span is 1 mA or more - Input Signal Code A
- -10 to 10 Vdc, Span is 0.1 V or more - Input Signal Code 1
- -2 to 2 Vdc, Span is 10 mV or more - Input Signal Code 2
Insulation Resistance
- 100 MΩ or more at 500 Vdc between Input & Output, Output & Power Supply, & Input & Power Supply
Load Impedance
- 750 to 250,000 ohms
Mounting
- Nest-Mounting
Operating Temperature
- 0° to 50° C (32° to 122° F)
Output
- -10 to 10 Vdc
- 1-5 Vdc
- 4-20 mA
Power Supply Effect
- ± 0.1 % of Span or Less
Resistance
- 1 MΩ During Power-On, 800 kΩ During Power Off - Input Resistance for Signal Code 1
- 10 kΩ During Power Off, 1 MΩ During Power-On - Input Resistance for Signal Code 2
- 100 ohms - Input Resistance for Signal Code A & B
Response Time
- 200 ms, 63 % Response (10 to 90 %)
Span & Zero Adjustments
- ± 1 % of Span - Input Adjustment
- ± 10 % of Span - Output Adjustment
Supply Voltage
- 1,500 Vac/minute between Input & (Output & Power Supply) - Withstand Voltage
- 10 mV-20 V - Span (DC)
- 10 mV-60 V - Span (DC)
- 24 Vdc ± 10 % (Ripple Content 5 % Peak-to-Peak or Less)
Temperature Effect
- ± 0.2 % of Span or Less for a Temperature Change of 10° C (18° F) - Effect of Ambient Temperature Change
Zero Offset
- 0 to 200 % - Zero Elevation (Current Signal)
- -100 to 200 % - Zero Elevation (Voltage Signal)
- -50 to 50 % - Zero Elevation (Voltage Signal)