Ultra 1000有毒气体/氧气传感器

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

Description

Ultra 1000 series is a microprocessor based addressable sensor for toxic gas detection. 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

Electrochemical

Measuring Range

 

Repeatability

± 2 % Full scale

Zero Drift

< 5% per year

Response Time

T90 < 30 seconds

Classification

Class I, division 1, Groups B,C & D

Operating Temperature

-4°F to +122°F (-20°C to +50°C)

Operating Humidity

15% 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

Three-digit display for gas concentration, Alarm relay status, calibration mode and sensor fault status.

Input Power

14-28 VDC. 24 VDC nominal

Power Consumption

90mA @ 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

Calibration

Non-Intrusive activated by internal magnetic switch

Cable Requirement

3 wire shielded cable. Max loop resistance 20 Ohms

Cable Entry Hub

Ammonia (NH3)	50 ppm
Carbon Monoxide (CO)	100 & 1000 ppm
Chlorine (CL2)	10 ppm
Chlorine Dioxide (CLO2)	50 ppm
Ethylene (C2H4)	100 pm
Ethylene Oxide (C2H4O)	50 ppm
Hydrogen Chloride (HCL)	20 ppm
Hydrogen Sulfide (H2S)	100 ppm
Hydrogen (H2)	100 & 1000 ppm
Hydrogen Cyanide (HCN)	30 ppm
Methyl Mercaptan (CH3SH)	100 ppm
Nitrogen Dioxide (NO2)	20 ppm
Nitric Oxide (NO)	100 ppm
Oxygen Deficiency (O2)	25%
Sulfur Dioxide (SO2)	50 ppm