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Ultra 1000 Combustible Gas Addressable Sensor
Features
- RS-485 MODBUS Serial Output
- 4-20mA Analog Output
- 12-28 VDC Operation
- Automated Non-Intrusive Calibration
- Fully Adjustable Alarm Relay
- Lower wiring costs
- Liquid Crystal display with back light
Description
Ultra 1000 series is a microprocessor based addressable sensor for detection of combustible gases. The self- contained sensor features user friendly interface and menu driven calibration procedure and configuration.
The complete sensor consists of a stainless steel sensor head assembly, a user connection board and a transmitter board assembly. All of the sensor electronics are enclosed in an explosion proof instrument box. The unit’s modular design allows easy maintenance, troubleshooting and high reliability.
The unit provides a 4-20mA signal proportional to 0 to 100% of the detection range. In addition the sensor may be addressed via MODBUS RTU interface. The MODBUS output provides sensor status, alarm & fault conditions. Alarm levels can be programmed via MODBUS RTU or via magnetic switch on the face of the transmitter board assembly.
Ultra 1000 can be calibrated in less than 2 ½ minutes. The calibration and the set-up parameters are retained in a non-volatile memory.
Specifications
- Sensor Type
- Continuous diffusion Catalytic Bead
- Measuring Range
- 0 to 100 % LEL
- Repeatability
- ± 2 % Full scale
- Zero Drift
- < 5% per year
- Response Time
- 50 < 10 seconds T90 < 30 seconds with 100% LEL methane gas applied
- Classification
- Class I, division 1, Groups B,C & D
- Operating Temperature
- -40°F to +158°F (-40°C to +70°C)
- Operating Humidity
- 10% to 90% RH, non-condensing
- Display
- 2 lines by 8 Character LC Display with back light
- Mechanical Specifications
- Length: 7 inches (178 mm)
- Width: 5 inches (127 mm)
- Height: 4.5 inches (114 mm)
- Status Indicators
- LC Display for gas concentration, Alarm relay status, calibration mode and sensor fault status.
- Input Power
- 14-28 VDC. 24 VDC nominal
- Power Consumption
- 150mA @ 24 VDC Typical
- Alarm Relays
- Fully programmable. 0 to Full scale range of the sensor. Latching or Non-Latching.
- Relay Ratings
- SPDT Form “C” type Relay contacts
- 5 Amps @ 250 VAC or 30 VDC
- Analog Output
- Linear 4-20mA (300 Ohms max. load)
- 2.0 mA - Calibration mode
- < 1.0 mA - Sensor malfunction
- Interface
- RS-485 MODBUS RTU (2 wire) at 9600 Baud rate
- Calibration
- Non-Intrusive activated by internal magnetic switch
- Cable Entry Hub
- ¾” NPT Female