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DH1 Isolator
Brand: Yokogawa
The DH1 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- Output 1 (the first output) is 1-5 V and connectable with the host control system
- Output 2 (the second output) follows the output 1. It can be connected to a recorder or an indicator, without any disturbances to the control system
Specifications
Brand
Accuracy
- Output 1: ± 0.1% of Span
- Output 2: Relative Error within ± 0.2% between Output-1 & 2
Consumption
- 55 mA at 24 Vdc (1-5 V) - Current Consumption
- 85 mA at 24 Vdc (4-20 mA) - Current Consumption
Current
- 100 μA-150 mA - Span (DC)
- 1-24 mA DC - Span
Electrical Connectors
- M4 Screw Terminal
Humidity
- 5 to 90% Relative Humidity, Non-Condensing - Operating Humidity
Input
- 0 to 100 mVdc
- 0 to 150 mA DC
- 10 mV-600 V - Span (DC)
- -300 to 300 Vdc
- Within ± 30 Vdc
Insulation Resistance
- 100 MegaOhms or more at 500 Vdc between Input & Output, Output & Power Supply, & Input & Power Supply
Mounting
- Nest-Mounting
Operating Temperature
- 0° to 50° C (32° to 122° F)
Output
- 0 to 100 mVdc
- 0 to 24 mA DC
- -10-10 Vdc - Measuring Span
Power Supply
- 24 Vdc ± 10% (Ripple Content 5% peak-to-peak or less)
Power Supply Effect
- ± 0.1% of Span or less for the Fluctuation within the Operating Range of Power Supply Voltage Specification
Resistance
- 100 to 1,000,000 ohms - Input Resistance
- 750 to 250,000 ohms - Allowable Load Resistance
Response Time
- 150 milliseconds, 63% Response (10 to 90%)
Span & Zero Adjustments
- -5 to 5% - Zero Adjustment
- 95 to 105% - Span Adjustment
Supply Voltage
- 1,500 Vac/minute between Input & (Output & Power Supply) - withstand Voltage
- 500 Vac/minute between Output & Power Supply - withstand Voltage
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)
- Within ± 50% of Span - Zero Elevation
