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GfG ZD 22 Fixed Gas Transmitter with Oxygen (O2) Sensor, 0 - 25% vol. Range, No Display / 4-20 mA - ZD22-701

Item #:
ZD22-701
Brand:
GfG
$1,270.00
Qty
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GfG ZD 22 Fixed Gas Transmitter with Oxygen (O2) Sensor, 0 - 25% vol. Range, No Display / 4-20 mA - ZD22-701

GfG ZD 22 Fixed Gas Transmitter with Oxygen (O2) Sensor, 0 - 25% vol. Range, No Display / 4-20 mA -...

$1,270.00

ZD22-701 ZD 22 Fixed Gas Transmitter with Oxygen (O2) Sensor, 0 - 25% vol. Range, No Display / 4-20 mA by GfG

Superior technology

The ZD 22 Transmitter is specifically designed for long-term monitoring of oxygen concentrations. The integrated amperometric oxygen sensor is based on an electrochemical oxygen pumping cell made of zirconium dioxide. It is characterized by its robustness, a very high life expectancy and its outstanding long-term stability. The integrated thermostatic control of the sensor element achieves accurate measuring results in the entire temperature range, regardless of the operating temperature. It can also be permanently used in environments with high concentrations of CO2 or in dry atmosphere. Special equipment is available to protect the transmitter when used in harsh environments.

Signal processing

The protective casing (IP 54) of the ZD 22 Transmitter contains the complete signal processing electronics and the failsafe routing of the measurement signal for the measuring computer, with extensive self-monitoring. The embedded software linearises the measuring signal and compensates for the effects of temperature. As a result, correct readings are transmitted even with weather related fluctuations in temperature. In addition, the transmitter can be connected to a gas measurement computer for the option of transmitting service, maintenance, and error messages.

Universal signal transmission

The ZD 22 Transmitter transmits the signals either using an analog (0.2 1mA / 4-20 mA) current interface or a digital (RS485) Modbus interface. This permits the universal use of the trasmitters in combination with GfG gas measurement computers and thus connection to a safety system, so that you and your systems will benefit from the best possible protection.

There are a variety of applications for the ZD 22 in regard to sensors, status LEDs and optional analog or digital interface, "Zero" key to calibrate the zero point, test socket and a potentiometer for the calibration of the sensor.

Weather protection

A weatherproof housing not only protects transmitters against exposure to wind and weather, but also against contamination and excessive temperatures caused by direct sunlight.

Optional colored graphic display

The clear graphic display of the ZD 22 is self explanatory and allows you to read the current status and other important information with ease. The display enables you to navigate effortlessly through the unit’s concise menu and to change settings or even calibrate, depending on your user authorization. In the event of an alarm the display changes color from green to red. Two LEDs indicate the status.

Operation buttons

The buttons on the transmitter allow the unit to be calibrated and settings to be adjusted through the menu as needed.

Calibration adapter

In order to perform a calibration, a calibration adapter is used on the transmitter, which ensures a uniform and secure supply of gas.

Easy and convenient service

GfG offers full after-the-sale commissioning and field service support.

  • Long service life of the sensors
  • Extremely fast response time: t90 < 5 sec.
  • Reduced pressure, humidity, or temperature influence
  • No damage due to CO2
  • Cost effective single-man adjustment
  • Affordable operation costs
Gases Oxygen (O2)
Measuring Range 0.2 % vol.
0.25 % vol.
Measuring Accuracy +/- 0.1 % vol. (repeatable)
Detection Method Power Limited sensor based on zirconium dioxide
Measurement Principle Zirconium Dioxide
Gas Supply Diffusion
Flow rate with calibration adapter
Response Time t90 <5 seconds (0 at 25 % vol. O2)
Expected Sensor Life >5 years (depending on the sensor and environmental conditions)
Ambient Temperature -4 °F to +122 °F/ -20 °C to +50 °C
Humidity 5 to 90 % r.h. non-condensing
Ambient Pressure 80-120 kPa
Output Signal 0.2-1 mA / 4-20 mA / RS485 (Modbus)
Power Supply 15 - 30 V DC
Available Configurations Display
Blind (without display)
Housing Material: Plastic, IP 54
Weight 6 oz. or 8 oz. / 175 g or 220 g (display version)
Dimensions 3.8 x 5.5 x 2 in. / 96 x 140 x 49 mm (W x H x D)
Housing Protection IP 54

Datasheets & User Manuals

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