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Ultra1000 Series Carbon Dioxide (CO2)

The Ultra1000 Series is a 24 VDC powered gas detector to monitor carbon dioxide vapors in air. The complete sensor consists of a stainless steel sensor head assembly and an interface module enclosed in a flame proof instrument enclosure.

Interface module generates a 4-20mA signal proportional to O to 100% of the detection range. Digital display and two (2) fully programmable alarm relays for Low and high gas alarm are also provided on the interface module. A half-duplex RS-485 port for MODBUS RTU communication to user PLC or control system.

The detectors feature a simple non-intrusive automated calibration without any manual adjustments. Analog signal and alarm relays are inhibited during calibration mode to avoid any unnecessary or false alarms.

View Data Sheet   Technical Specifications


  • Oil & Gas Drilling Rigs
  • Offshore Platforms
  • Petrochemical Industry
  • Chemical Storage
  • Water & Wastewater Treatment
  • LPG Storage
  • Refineries

Key Features

  • LCD display with back light
  • Non-dispersive Infrared Sensing technology (NDIR)
  • Simple one person auto Calibration
  • Three programmable alarm relays
  • Linear 4-20mA Output
  • Wide Power input range
  • Reverse Polarity protection
  • Provides complete status & control capability in the control room

Technical Specifications

Sensor Type

Continuous diffusion / absorption
Non-dispersive Infrared Optical (NDIR)

Measuring Ranges Available

0-10% & 0-100 % Volume


± 2 % Full Scale

Zero Drift

< 5% per year

Response Time

T50 < 15 seconds
T90 < 30 seconds


± 2 % Full Scale

Electrical Classification

Explosion Proof Enclosure

ATEX: II 2G Ex d IIC T6 (Tamb= -34° to +100°C)
CSA: Class I, Div 1 & 2, Groups B, C & D


ABS Type Approved

Operating Temperature Range

-40°F to +149°F (-40°C to +65°C)

Humidity Range

10 - 90% RH (non condensing)

Storage Temperature

-40°F to +185°F (-40°C to +85°C)


Height: 7.4 inches ( 188 mm)
Width: 6.2 inches (159 mm)
Depth: 4.9 inches (125 mm)

Ingress Protection


Display and Indicators

2 line by 8 character display with backlight for gas reading, Alarms and Fault conditions

Power Input

12- 28 VDC (24 VDC Nominal)

Power Consumption

< 2 Watts

Typical Sensor Life

5 Years in air

Alarm Relays

Programmable Low and High Alarms, Fault Alarm
  SPDT Form "C" Relays
  2 A @ 250 VAC or 30 VDC


Non-Intrusive automated calibration
No manual adjustments required

Analog Output

Linear 4-20 mA output

Fault: 0 mA
Calibrate Mode: 2 mA
Over Range: > 21 mA

Serial Communication

RS-485 Half Duplex

Input / Output Protection

Transient over voltage suppressor
Reverse Polarity protection
EMI / RFI Immunity

Cable Requirement

Three wire shielded cable for power and analog signal.
Max of 300 Ω load for analog output


Dust or Splash guard, Flow Adapter with tube fittings, Sensor Duct Mount Kit, Pole Mount brackets.

Cable Entry

3/4" NPT Female
Adapter available for 1/2" NPT or M20


Two year Electronics
One year Sensor head assembly


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