Typical External Alarm Relay 1 Wiring

Jumper the ‘Neutral’ line of an external power source or the monitor’s AC input to the ‘Common’ terminals on the relay connector.

Connect one end of the strobe or horn to the ‘NO’ terminal of whichever level of alarm is appropriate for the application.

The other end of the strobe or horn is connected to the other leg of the external power source. For protection, install an in-line fuse of the appropriate size and design for the external alarm device being used.

4–20 mA Current Loop Interface

An external 4–20 mA monitoring device (e.g., chart recorder) can be connected to the AGMSZ using a shielded-twisted-pair cable. Use any of the service knockouts to gain access to the interior of the monitor. Locate the 420 mA Connector (Page 8), remove it from the circuit board, and then remove the resistor or shorting wire from its terminals.

IMPORTANT! The monitoring device must be isolated from ground (floating).

NOTE: A 100 ohm, ¼ W resistor must be connected to the 4–20 mA connector if no external monitoring device is used. Failure to install this resistor may cause a loop fault code <0010> to occur (Page 19).

Secure the wire leads from the external monitoring device to the 4–20 mA connector as shown in the diagram below, making sure that the polarity at this connector matches the wiring at the monitoring device.

The default current-to-ppm factor is set to 0.016 mA = 1 ppm, providing a measurement range 0 ppm (4 mA) to 1,000 ppm (20 mA). Note that the current-to-ppm factor can be changed using the monitor’s LOOP function (Page 16).

To facilitate loop zero and span checking, note that when the LOOP function is selected the loop output is set to 20 mA, and upon exiting this function the loop output is set to 4 mA.

4–20 mA Current Loop Connector

CAUTION: Never apply power to the 4–20 mA Current Loop Connector from an external power supply. Connect only a load resistor and/or a floating measurement device.

Instruction 3015-4286

11

Page 15
Image 15
Bacharach 3015-4286 manual MA Current Loop Interface, Typical External Alarm Relay 1 Wiring, MA Current Loop Connector

3015-4286 specifications

Bacharach 3015-4286 is an innovative and versatile instrument, specifically designed for professionals in industries where air quality monitoring is paramount. This model stands out due to its advanced features and technologies, making it a preferred choice for those needing accurate and reliable measurements of various gases.

One of the main features of the Bacharach 3015-4286 is its multi-gas detection capability. It can simultaneously monitor up to five different gases, providing users with a comprehensive understanding of their environment in real-time. This is particularly beneficial in applications such as HVAC, refrigeration, and industrial processes, where the presence of gases like carbon dioxide, ammonia, and refrigerants can have significant safety and regulatory implications.

The device utilizes state-of-the-art sensors that ensure high sensitivity and selectivity to the target gases. These sensors are designed for quick response times, allowing users to detect any changes in gas concentrations almost instantaneously. This responsiveness is crucial for environments where rapid decision-making is necessary to ensure safety and compliance with environmental regulations.

In addition to its gas detection capabilities, the Bacharach 3015-4286 features a user-friendly interface. The large display screen provides clear readouts, and the intuitive navigation system allows users to easily switch between different measurement modes and settings. This accessibility makes it suitable for both experienced professionals and those who may be new to gas monitoring technologies.

Battery life is another characteristic that sets the Bacharach 3015-4286 apart from its competitors. With efficient power management, the device can operate continuously for extended periods without the need for frequent recharging or battery replacement. This reliability is crucial for fieldwork, where access to power sources may be limited.

Moreover, the device is compact and lightweight, enhancing its portability. Users can easily transport the Bacharach 3015-4286 to various job sites without inconvenience. Its robust design ensures durability in diverse working conditions, further establishing it as a dependable tool in the field.

In summary, the Bacharach 3015-4286 is a cutting-edge gas detection instrument offering multi-gas detection, advanced sensors, user-friendly operation, long battery life, and portability. These features make it an indispensable asset for professionals seeking to ensure safety and compliance in their working environments.