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 
 
| 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 | 
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 
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 
 
| 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 | 
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