GfG Instruments

2210-031 Dynagard 25 Series System with ZD 21 Transmitter for Detecting Oxygen (O₂) and GMA 41B Single Channel Controller (no power supply) by GfG

Simple and Effective

The Dynagard 25 Series accurately measures oxygen levels. The unit offers a local display, a horn / strobe, and a linear 4-20 mA output. The Dynagard 25 Series offers a safe and reliable gas warning system.

Alarm Points

Each alarm can be adjusted separately. The alarm point values can be freely adjusted within the detection range of the transmitter. Every alarm point value can be set to over range / under range, latching / non-latching, or resettable / non-resettable.

Alarm Relays

The controller provides four voltage-free relays for the three alarms and one fault warning. The relays may be used to control additional alarm devices like lights or horns. They can even prompt specific counter measures to prevent or limit dangers from gases or vapors.

ZD 21 Zirconia Sensor

The comprehensive electronics allow for easy operation and maintenance and also increase operational safety and accuracy. In less than 2 seconds, the ZD 21 responds to an oxygen deficiency. The sensor has a platinum coating on the inside and outside of the ceramic cylinder. Oxygen is electrochemically reduced at the cathode.

The voltage produced is proportional to the next difference in the partial pressures of oxygen in the reference gas versus the sampled gas. This extremely short response time allows the user the time to take measures to prevent consideable damage.

Features

• Easy installation
• Local display and horn / strobe
• Adjustable alarm points
• On-board relays for external controls
• 4-20 mA output

2813-4505-002 EC 28i Intrinsically Safe Transmitter with Sensor, Ammonia (NH3), 0-500 ppm, Display by GfG

Features

• Full-featured smart transmitter for oxygen or a wide range of toxic gas measurement
• Non-intrusive AutoCal calibration adjustment
• Increased safety design to reduce installation cost in potentially hazardous locations
• Intrinsically safe (i) EX-Proof version
• BVS 04 ATEX E 132 X (electrical ex-protection) II 1G EEx ia IIC T4 C 0158
• Available in two configurations: Blind (no display), Display
• Barriers are required
• EX- conduit is not required
• Reduced installation costs

CS22-706-DM CS22 Fixed Transmitter, Ammonia (NH3), 0(20) - 3,000 ppm, Display / Modbus by GfG

Wherever toxic or flammable gases and vapors must be monitored without requirements for explosion protection, the use of the CS22 is recommended.

Proven and cost-effective

The CS22 works on the principle of chemisorption (CS). Thanks to a wide range of monitorable gases and multiple measurement ranges, the CS22 offers a wide range of uses, from laboratories to industrial applications to refrigeration systems.

Transmitters with electrochemical sensors (EC), are also used with toxic and flammable gases. In contrast, the CS22 is a much more durable and cost-efficient solution. However, the environmental parameters must fit.

Communicates analog and digital

The measured values and status information of the CS22 can be transmitted either analog (4-20 mA or 0.2-1 mA) or digital (RS-485). This allows not only the use in combination with any GfG controller, but also the connection to programmable logic controllers (PLC).

Smart measured value processing

Industry-wide, the trend is towards smart units, such as the CS22, whose integrated electronics process the data already at the measuring point. The linearization of the measurement signal, compensation of temperature influences, detection of malfunctions and information on the next service or maintenance interval are just some of the advantages that result.

Variants for every requirement

The basic version of the CS22 is sufficient for many applications. If a measured value display on site is desired, there is also a variant with display and acoustic alarm.

CS22 Basic variant for a wide range of catalytic sensors
CS22 D with display to show the current measured value

In combination with GfG's powerful controllers, both variants are the right choice for a wide range of gases to be monitored.

2210009 ZD 21 Fixed Gas Transmitter with Internal Sensor, Oxygen (O2), 0 - 25% / vol. by GfG

A particularly long sensor life makes the ZD 21 a low cost transmitter for oxygen monitoring. The expected lifetime of the sensor is 5 years in continuous operation. A robust aluminum casing protects the sensor and the circuitry from impacts, splashed water, and dirt.

The ZD 21 is an "intelligent" transmitter. The comprehensive electronics allow for easy operation and maintenance and also increase operational safety and accuracy. In less than 2 seconds the ZD 21 responds to oxygen escaping from a leak. This extremely short response time allows the time to take measures to prevent considerable damage.

• Extremely stable oxygen (O2) sensor lasts 5 years
• Fast response
• No influences from pressure, humidity, or temperature
• No damage from carbon dioxide (CO2)

1316-002 G313 Single Gas Detector for Methane (Natural Gas), Propane, Refrigerant and other MOS Detectable VOCs, with NiMH Rechargeable Battery Pack by GfG

Pinpoint the Smallest Leaks

Small leaks in pipes or storage tanks can release enough gas to build up dangerous concentrations. The careful inspection of flanged, threaded and soldered connections before and after installation will ensure equipment and worker safety. The G300 leak detector will make leakage sprays a thing of the past

Clear and simple displays and warnings

Changing gas concentrations are indicated audibly and visually. The frequency of the audible warning rises with gas concentrations, allowing the user to pinpoint leaks. The bar graph display will warn the user if dangerous gas concentrations arise.

Light, compact and durable

Designed for one-handed operation, the G300 reacts to concentrations as small as 5 ppm and measures up to more than 10,000 ppm or 1% volume. The sensor is located at the end of a flexible gooseneck or a helix cable to allow the user to reach difficult or unreachable locations. The G300 is available with or without explosion protection for ammonia and combustible gases. The G311 operates on four "AA" alkaline batteries. All others have a rechargeable battery with run times of more than eight hours.

Features

• Small, light, and durable leak detector
• For combustible gases and ammonia
• More than 8 hours of continuous operation
• Explosion-proof models available

Standard Accessories

• G300 Detector
• Specified sensor
• Alkaline batteries or rechargeable NiMH battery pack as specified
• Charger (with rechargeable battery pack only)
• Fixed gooseneck (with alkaline battery pack only)
• Manual

2801-60-002 CC 28 Fixed Gas Transmitter with Standard Catalytic Sensor 0-50% LEL (MK 219-1), Hydrogen (H2), Display by GfG

Superior technology

In areas where combustible gas or vapor hazards may exist, GfG s new CC 28 combustible transmitter is the perfect choice for reliable area monitoring. With its proven design, this ATEX certified transmitter offers an integrated explosion-proof buzzer and bright-alarm LEDs for reliable warning of combustible gas hazards (even in hazardous locations). This superior design provides warnings for immediate personnel, and ensures entire plant safety.

Easy handling

Smart sensor technology allows easy installation. Sensor replacement takes only a few seconds-simply plug in the sensor. User adjustments are performed at the transmitter with simple touch keys, or with the optional remote control interface (one person calibration).

RC2 remote control

Several combustible gases are lighter than air. With the transmitter mounted close to the ceiling, calibration can be difficult. The remote control for the CC 28 allows you to perform calibration or zero adjustments without the need of a ladder or lift. A flexible cable connects the remote control to the transmitter and displays the same reading as the display on the transmitter. With the remote control inspection,service and calibration can be performed easily by one person.

The sensor and the integrated temperature compensation provide highest measurement accuracy.

Low maintenance requirements and long sensor life reduce your cost of ownership. Just sign a service contract and don t worry about any problems. We will service your system at regular intervals.

Models

Model CC 28D allows you to read the gas concentration both at the transmitter and at the GMA controller.With the RC2 remote control - the CC 28 is easy to use and to operate even if it is mounted at the ceiling.

Model CC 28DA provides additional warning with bright integrated alarm LEDs and a buzzer.

Features

• Full-featured smart transmitter for combustible gas measurement
• Non-intrusive calibration adjustment
• Expected sensor life of 5 years
• Increased safety design to reduce installation cost in potentially hazardous locations
• ATEX EEx dem [1b] IIC T4
• Proprietary, high performance combustible gas sensor
• Available in three configurations: Blind (no display), Display, Display with local alarms

Advantages at a glance

• Display of gas concentration at transmitter or remote control
• ATEX II G EEx dem [ib] IIC T4
• Ex-proof visual and audible alarms
• No need of expensive EX-proof buzzer or wiring
• Easy sensor replacement with plug-in sensors
• Long life sensor
• Low service requirement
• Permanent status and function display at transmitter
• Adjustments by means of touch keys or remote control without opening the casing
• Easy handling even at hard-to-reach accessible transmitter positions.

ZD22-701-D ZD 22 Fixed Gas Transmitter with Oxygen (O2) Sensor, 0 - 25% vol. Range, 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

3701-030 Dynagard Stand-alone System, Oxygen (O2) by GfG

Single-point Area Monitors

Dynagard AutoCal^® monitors are single point detection instruments that accurately measure toxic gases and oxygen levels. Alarm lights on the front panel illuminate and an internal horn sounds when gas concentrations are exceeded.

Simple and effective

The units accurately display values on a large backlit LED and can transmit a linear 4-20 mA output. AutoCal® calibration and maintenance is done effortlessly through front panel push-buttons. Smart sensors enable the user to change measuring ranges or gas types in the field without a need for additional programming. The Dynagard is equipped with onboard relays for two adjustable alarm points. It also has one sensor fault for local connection and activation or deactivation of external devices like strobes, fans, auto dialers etc.

Features

• AutoCal® automatic calibration
• Smart sensor technology
• Digital display / control connection
• Internal push-button alarm settings

2122011 GMA 104-R Four Channel Rack Mounted Controller Card Includes Feature Relays by GfG

Stationary gas monitoring systems

In many industrial operations, toxic or combustible gases and vapors or oxygen deficiency can be hazardous to personnel and disruptive to production. Even small amounts of some materials can cause dangerous situations. Both legal regulations and your responsibility to your workers demand continuous, responsive, and reliable monitoring for such dangerous gases. Only a fixed gas warning system like the GMA 100 II provides the security of a round-the-clock gas monitoring without the expense of manual measurement by your staff.

Control module GMA 100 II

The GMA 100 II stationary gas warning system is comprised of a control module and a remote sensor (MWG). The sensor continuously monitors the gas concentration and sends a signal via cable to the GMA 100 II control module for evaluation. The GMA 100 II constantly monitors its own operational status and powers the remote sensor.

Immediate recognition and warning of gas hazards

The GMA 100 II provides three alarm levels that can be used to initiate appropriate responses to gas hazards. The pre-alarm, for example, warns of low gas concentrations, indicating leaks, before dangerous situations occur. The other two main alarm thresholds indicate direct danger requiring immediate action. Alarm levels can be variably adjusted within the detection range and adapted to changing requirements. Every threshold can be set to latching / non-latching and resettable / non-resettable alarm points.

Quick reaction means increased safety

Every control module provides optional voltage-free relays for the three alarms and for fault warning. The relays may be used for controlling external alarm devices like beacons or buzzers, or they can activate specific counter measures (closing valves or turning on a fan) to eliminate the danger from gases or vapors. The GMA 100 II is flexible enough to accommodate your individual requirements. Every relay can be either a normally closed (NC) or normally open (NO) contact, and works in either closed or open circuit operation.

Easy Handling

A keypad controls the display of detection range, gas and units. Relays can be controlled and checked individually. No special tools or instruments are required. Alarm levels and calibration are set with push button menu control mechanical fine tuning with potentio meters is a thing of the past.

Single or collective alarm

The GMA RB relay module and the GMA SW key-operated switch allow you to group several control modules. The key-operated switch suppresses alarms during servicing.

In addition to the collective alarm, each controller can have up to four relays which can activate or deactivate electrical devices such as exhaust fans, valves, alarm horns or lights.

Protected against power failure

In case of a power failure, the optional battery back-up NAV takes over automatically and without delay to preserve safety. The NAV slides directly into the rack; no additional wiring is required.

More than 100 GfG sensors safety for all gas hazards

GfG Instrumentation s array of powerful and dependable remote sensors (MWG) provide a safe and reliable solution for individual detection tasks.

Combustible gases

Where combustible gases may build up to explosive concentrations, GfG Instrumentation offers a variety of monitoring techniques.

Toxic gases

Specially selected GfG sensors provide reliable monitoring of areas where toxic gases and vapors may be present.

Oxygen

Electrochemical sensors ensure reliable protection from hazards caused by oxygen deficiency or surplus.

GfG s remote sensors are available for more than 100 gases. Every remote sensor can be connected to the GMA 100 II. A simple calibration with a laptop rapidly configures the GMA 100 II to almost all requirements.

Monitoring four detection points simultaneously: GMA 100 / 4

The model GMA 100 / 4 has all the features of the GMA 100 II, and can operate four remote sensors simultaneously on one control module. This allows the configuration of a lowcost and space-saving gas monitoring system for multiple detection points.

Features

• Flexible, customizable, and economical
• Microprocessor controlled for all monitoring tasks
• Easy to operate

Includes

• G300 Detector
• Specified sensor
• Alkaline batteries or rechargeable NiMH battery pack as specified
• Charger (with rechargeable battery pack only)
• Fixed gooseneck (with alkaline battery pack only)
• Manual