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WR9A/WR9V Dew Point Converter
Brand: Yokogawa Electric Corporation
The WR9A/WR9V is a compact, front terminal connection type dew point converter that converts dew-point temperature signals into isolated DC current or DC voltage signals.
Features- Burnout setting, I/O adjustment and I/O monitoring can be made using the optional parameter setting tool (VJ77) or handy terminal (JHT200)
- Dual output and 2,000 Vac withstand voltage specifications are available
- For the Fahrenheit display, specify the option “/DF”
Specifications
Accuracy
- ± 0.2 % of Span or 0.2° C (0.36° F) whichever is greater (Including Linearization Error)
- Relative Error within ± 0.2 % between Output 1 & 2 - Dual Output
Burn-Out
- 60 seconds or Less - Burn-Out Time
- Down
- Off
- Up
Consumption
- 10 VA at 100 Vac (WR9A) - Power Consumption
- 55 mA at 24 Vdc (WR9V) - Current Consumption
- 6 VA at 100 Vac (WR9V) - Power Consumption
- 90 mA at 24 Vdc (WR9A) - Current Consumption
Current
- Approximately 1 mA DC - Measuring Current
Electrical Connectors
- M4 Screw Terminal
Enclosure, Body Material
- ABS Resin
Humidity
- 5 to 90 % Relative Humidity, Non-Condensing - Operating Humidity Range
Insulation Resistance
- 100 megaohms or more at 500 Vdc between Input & Output, Input & Power Supply, Input & Ground, Output & Power Supply, Output & Ground, & Power Supply & Ground
Measuring Range
- -45° to 60° C (-49° to 140° F)
Mounting
- DIN Rail Mounting
- Rack-Mounted
- Wall Mounted
Operating Temperature
- 0° to 50° C (32° to 122° F)
Output
- 0 to 24 mA DC
- 10 mV-20 V - Span (DC)
- -10-10 Vdc
- 1-24 mA - Span (DC)
Power Supply
- 24 Vdc ± 10 % (DC Drive)
- 85-264 Vac, 47 to 63 Hz (AC Drive)
Power Supply Effect
- ± 0.1 % of Span or Less - Power Supply Voltage Fluctuations
Resistance
- 150 ohms or Less Per Wire - Allowable Leadwire Resistance
- 2 to 250 kiloohms or more - Allowable Load Resistance for DC Voltage Output
- 750 to 15,000 ohms or Less - Allowable Load Resistance for DC Current Output
Response Time
- 200 milliseconds, 63 % Response (10 to 90 %)
Sensor, Probe Type
- Ni RTD (3-Wire Typical) of Dew-Point Sensor
Span & Zero Adjustments
- ± 1 % - Input Adjustment
- ± 10 % - Output Adjustment
Supply Voltage
- 1,500 Vac/minute for AC Drive - Withstand Voltage
- 500 Vac/minute between Output & Power Supply for DC Drive - 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)