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DIGITAL AND ANALOG SENSORS
(up to 16 can be attached by using splitters)
Note: The maximum combined cable length for all digital sensors connected to a single monitoring unit is 600ft, in total.
Standard Temperature Sensor
Monitor temperature to identify hot spots, and adjust the ambient temperature of your data center to reduce cooling power consumption while increasing efficiency within ASHRAE guidelines.
Use these accurate digital sensors to measure temperatures of critical locations in a server room. The small size and weight makes them easy to install where you need them. Stick one in the cabinet inlet and one in the outlet to diagnose air-flow problems. Put one in the A/C vent to detect problems at the source. Accurate to +/-0.5°C. Run them hundreds of feet from the Watchdog monitor.
SRTs are improved temperature sensors which are encapsulated with a stainless steel sheath probe sealed with waterproof heat shrink tubing. This provides abrasion resistance and environmental protection against dust and moisture. This allows SRT temperature sensors to carry an IP67 rating, supporting applications related to cold storage and the ability to submerge these probes in water or glycol for liquid temperature monitoring.
These are instant 'Plug & Play' sensors via one of the standard RJ-12 jacks on any Watchdog environmental monitor. A Watchdog environmental monitoring appliance cycles through the digital sensors to collect and log new readings. Custom alarms are triggered when a sensor value falls above or below a user-defined threshold. Alarm notifications are sent through email or SNMP.
The standard temperature probe measures 1.25" (3.18 cm) in length.
Watchdog digital sensors such as these SRTs communicate with Watchdog environmental monitors through a digital serial protocol. On those units that support digital sensors - up to 16 can be added by using splitters. The Watchdog environmental monitor auto detects the sensor type and identifies it on the web interface. Each digital sensor can be given a "friendly" name that can be set by the user. Sensors are available in several different lengths, however the total cable length of all digital sensors combined should not exceed 600 feet.
Item # SRT-xx
RTAFHD3-XX: All-in-one temperature/airflow/humidity/dew-point sensor
Provides multiple remote environment readings as a complete package
Built to remotely monitor computer cabinet or server room conditions, remote temperature/airflow/humidity/dew-point sensor (RTAFHD3) provides real-time values and feeding data back to the Watchdog environmental monitoring appliance for data logging and alarming.
Use to monitor temperature and humidity to identify hot spots and adjust the ambient temperature of your data center to reduce cooling power consumption while increasing efficiency within ASHRAE guidelines. Set multiple alarms and get alerts via email, SMS, SNMP or voice phone call.
This is an instant 'Plug & Play' sensor via one of the standard RJ-12 jacks on any Watchdog environmental monitor. Watchdog environmental monitoring appliance cycles through the digital sensors to collect and log new readings. Custom alarms are triggered when a sensor value falls above or below a user-defined threshold. Alarm notifications are sent through email or SNMP.
Watchdog digital sensors such as this RTAFHD3 communicate with Watchdog environmental monitors through a digital serial protocol. On those units that support digital sensors - up to 16 can be added by using splitters. Watchdog environmental monitor auto detects the sensor type and identifies it on the web interface. Each digital sensor can be given a "friendly" name that can be set by the user.
Common Sensor Locations
• Air-conditioning inlet (return air)
• Air-conditioning output (vent)
• Ambient room temperature
• Internal cabinet temperature
• Outside (sensor needs to be kept dry)
• Refrigeration units (1 to 3°C)
Features and Benefits
• Provides measurements for temperature, humidity, air flow and dew point
• Accurate and compact, easy to install
• Get alerts via email, SMS, SNMP and/or phone call
• Small and lightweight
• Compatible with Watchdog climate monitoring devices that support up to 16 sensors
Note: This sensor model may not be compatible with previous versions of the RTAFH sensors and may not work together on the same monitoring device.
Item # RTAFHD3-xx
ANALOG SENSORS
(Analog inputs show up on the web interface as "I/O" sensors. The default name for each input can be changed to reflect what is attached. Analog sensors generally come in two types: analog voltage and dry contact.)
Flood Sensor
• Used to detect water leaks
• Connects to a Vertiv Geist Watchdog climate monitor via analog input or analog to digital converter
• Receive alarms via email or SNMP
The flood sensor allows a Vertiv Geist Watchdog climate monitor to detect leaks that could damage your equipment. The sensor measures conductivity and indicates whether the sensor is dry, damp, or completely immersed in water.
When water or other conductive liquid is present, a tiny electrical current flows between the metal contacts on the sensor. The more liquid, the higher the current. A cable attached to the sensor allows the climate monitor to detect the presence and severity of a leak. Some example sources include:
• Plumbing fixtures
• Air-conditioner drip pans
• Condensation-outflow pans
• Roof/ceiling leaks
Connecting to a Vertiv Geist Watchdog climate monitor
There are two options for connecting the flood sensor to a Vertiv Geist Watchdog climate monitor. Since the flood sensor is an analog sensor device it can connect directly to an analog input. If other sensors already occupy these inputs, or the climate monitor doesn't have them, then you can use an analog to digital converter to connect the sensor to the monitor's digital-sensor ports.
Alarms
The web interface provided by a Vertiv Geist Watchdog climate monitor allows you to configure alarms to notify you if water is present. The notification is sent through email and/or SNMP trap. Some units can also trigger an alarm buzzer or energize an output relay.
Features and Benefits
• Used to detect water leaks
• Connects to Vertiv Geist Watchdog climate monitoring devices via analog input or A2D (analog-to-digital interface converter)
• Receive alarms via email or SNMP
Item # FS-xx
Door Position Sensor
Watchdog magnetic door position sensor offers a low-cost method to monitor access doors or cabinets that should remain closed. The noncontact magnetic switch mounts to the door of a server rack or equipment room and connects to a Watchdog climate monitor.
Remotely check the door status through the web interface or use alarms to notify you if a door is open.
Watchdog door position sensor/switch has four components:
• Magnet
• Switch with screw-terminals
• screw terminal
• cover and connection wires
The magnet mounts to a door or access panel, while the switch mounts to the frame. When the door is closed the two pieces should be within 1/2" of each other. When the door opens this distance increases, eventually toggling the switch. This allows the Watchdog to know when the door is open.
Connecting to a Watchdog
There are two options for connecting the door switch to a Watchdog. You can connect the sensor directly to the Analog Input terminals. If the inputs are all in use or the climate monitor doesn't have analog inputs, then you can use a A2D interface to connect the sensor to a digital sensor port.
Multiple door switches can be wired in series to a single analog input or A2D. This is a good way to free up inputs when you don't need to know the specific door that is open, just that at least one door in the group is.
Alarms
You can configure alarms using the Watchdog's web interface. With the appropriate alarm thresholds the Watchdog will send you an alert via email or SNMP trap if a door is detected open.
Some units can also trigger an alarm buzzer or energize an output relay in response to an alarm.
Features and Benefits
• Used to detect whether a door is open or closed
• Connects to the Watchdog via analog input or A2D
• Receive alerts via email or SNMP
Item # RDPS-xx
ACCESSORIES
5 Port Splitter
For multiple remote sensors this 5 port splitter makes the installation easy. Chain them together to connect up to 16 sensors. One RJ-11 plug, five receptacles, 5 foot cord. White.
Item # SP-5...$37
MORE SENSORS
(Analog inputs show up on the web interface as "I/O" sensors. The default name for each input can be changed to reflect what is attached. Analog sensors generally come in two types: analog voltage and dry contact.)
Current Transducer - Load Trend Monitoring
Current transducer monitors the current being drawn by a particular device or group of devices. It also measures current ranges of 30, 60 and 120 amps, determined by a three-position switch. The unit outputs 0 to 5 VDC (proportional to current).
Current transducer encircles a single power wire and transforms the AC amperage into a 0 to 5VDC signal suitable for input into a Watchdog climate monitor.
A selector switch allows you to chose one of the sensor's three current ranges.
The split-frame design of this Current transducer simplifies installation. The frame swings open and clamps around a current-carrying wire. Note that a single wire is necessary for current measurement. If two wires are placed in the Current transducer their magnetic fields will cancel each other and the current measurement will be inaccurate.
Connecting to a Watchdog
A 2-position screw-terminal block provides connections for signal wires (not included) that go to the Watchdog. Make note of the polarity on the label, as connecting the wires backwards may cause damage.
There are two ways to connect this sensor to a Watchdog. If an Analog Input is available, then you can connect the signal wires directly to the input terminals. However, if all inputs are being used or the unit doesn't have them, you can connect the sensor using a A2D analog-to-digital interface. This interface allows the Current transducer to connect to a digital sensor port.
Alarms
The Watchdog provides the web interface to create and modify alarm thresholds. With the appropriate thresholds the Watchdog will send you an alert if the current draw is getting too high. This helps to prevent overloading a breaker or the wiring in your building. Get alerts via email or SNMP trap if there's a problem.
Features and Benefits
• Measure current ranges of 30, 60 or 120 amps
• Sensor frame swings open and clamps around wire
• Outputs 0 to 5 VDC, proportional to current
• Connects to a Watchdog via analog input or A2D
• Set alarms and get alerts via email or SNMP
Note: An A2D is required to connect an analog sensor to Watchdog environment monitors that only have digital ports.
• Amperage range: 30, 60, 120 amps, AC
• Output: 0 to 5 VDC, proportional to current
• Accuracy: +/- 2% from 10% to 100% full scale
• Connections: 2-position screw-terminal block
• Size: 2.9" L x 2.58" W x 1.04" H
• Compatibility: Works with all Watchdog climate monitors with analog ports
• Compatible with A2D Analog-to-Digital Interface
Item # CT-30/60/120....$89
Analog to Digital Interface
Analog to digital converter, better known as the A2D, converts an analog sensor into a digital sensor that can be connected to a digital sensor-port on a Watchdog 15 or Watchdog 100 environment monitor. A2D allows you to interface an analog sensor to a plug-n-play digital sensor-port.
A2D is useful for adding additional analog sensors when all of your existing analog inputs are already used up with other sensors.
It is compatible with Watchdog sensors as well as any industry standard sensors that are dry-contact or that emit a 0-10VDC or 4-20mA signal.
Features and Benefits
• Plug-n-play
• Configurable unit measurements
• Daisy-chain capable
Sensor Compatibility
• Door Position
• Power Failure
• Water Sensing Cable
• Flood Sensor
• Isolated Voltage
• Smoke Alarm
• Industry Standard 0-10V or 4-20mA
• Input Rating: 0-10VDC, 4-20mA, or dry contact
• Operating Temperature: -20°C to +75°C (-4°F to +167°F)
• Operating Altitude Limit: 3,050m (10,000ft) above MSL
• Operating Relative Humidity: 5-95%
• Connections: Digital In , Digital Out and Analog In
• Enclosure Size LxWxH: 57.15 x 27.20 x 23.49mm (2.25 x 1.071 x 0.925 in)
• Mounting Hole Size: 6.35mm (0.25 in)
• Cable Type: Includes a 3m (10 feet) uplink cable to connect to the host
• Compatibility: Watchdog 15/100
Item # ....A2D-xx
Water Sensing Cable Kit
Surround the periphery of a room or encircle rows of data cabinets with this water-sensing cable that detects liquid along the whole length.
Put this cable around the periphery of your server room or around data cabinets and get early warning of water entry. Get an e-mail or page when water hits.
Detect moisture over a wide area. This cable detects the presence of water or other conductive liquid over its entire length.
Typically used to protect computer server rooms from water damage, Watchdog WaterSnake connects to a Watchdog monitoring appliance. When water is detected, the Watchdog climate monitor sends alerts by e-mail or SNMP trap.
The sensing cable (orange wire) attaches to the floor using small nylon J-clips. The sensing cable connects to the leader cable which attaches to the wall-mounted interface box. Signals from the interface box run to the Watchdog. A LED on the box provides a visual indication of system status.
The kit comes with wall mounted control box. Uses two Watchdog I/O ports. Reports when the cable is wet, disconnected or faulty.
Connecting to the Watchdog
Four signal wires connect to terminals on the interface box. One pair of wires tells if water was detected, while the other tells if the cable is damaged (cable fault). These wires connect the interface box to the Watchdog climate monitor.
There are two ways to connect the signal wires to the Watchdog. One option is to attach the wire to Analog Input terminals. The other option is to use two A2D interfaces.
Each A2D converts the analog signal from a pair of wires into digital. This allows you to use digital sensor ports when analog inputs aren't available.
Alarms
The Watchdog climate monitor continuously monitors the WaterSnake to see if water is detected. If so, the Watchdog follows the actions indicated by user-defined alarms.
Options include sending alerts through email or SNMP and depending on the Watchdog, trigger an alarm buzzer or energize an output relay. Alarm thresholds are configured through the web interface provided by the Watchdog.
Compatibility
• Works with all Geist Watchdog climate/environmental monitors with analog ports
• Compatible with A2D interface (requires 2 A2Ds)
Kit Includes
1x Interface Box
1x 15-foot Leader Cable
1x 50-foot wire to connect Interface Box to Watchdog monitoring appliance
10x J Clips
1x 10-foot water detection cable with EOL (end of line) connector
1x Power supply with 6-foot power cord
Note: This sensor uses two analog inputs: two A2Ds are required for use with Watchdog monitors that don't have analog ports.
• 2 dry-contact type signals (water detection, cable fault)
• Cable to Watchdog appliance: 50 feet, 4-conductor
• Leader cable length: 15 feet
• Sensing cable: 10 or 40 feet (up to 300 feet using extensions)
• Power: 5VDC wall transformer
• Indicator: Status LED
Item #WSCK-xx
WATER SENSING CABLE KIT DATA SHEET
SD2 Photoelectric Smoke Alarm
SD2 smoke alarm is a photoelectric type unit for use as an alert and relocate device in residential and commercial applications.
SD2 is a low voltage smoke detector with built in interface to allow monitoring through the ports of an environmental or power+environmental monitoring unit equipped with analog-sensor inputs. A 12VDC power supply is attached and a and a 25 feet length, 2-conductor alarm wire is included for easy installation.
When in alarm state, the monitored reading will drop below 10.
Each smoke alarm has a solid state piezo signal to warn and alert to the presence of threatening smoke.
SD2 photoelectric smoke alarm is designed to detect the smoke that results from an actual fire. Consequently, it is uncommon cigarette smoke or normal cooking smoke to cause an alarm.
SD2 is a 120VAC photoelectric smoke alarm/detector with 9VDC battery back-up as an auxiliary power source in the event of an electrical failure. It features a warning signal for low or missing battery.
SD2 smoke alarm operates on the photoelectric light scatter principle. The unit's sensing chamber houses a light source and a light sensor. The darkened sensing chamber is exposed to the atmosphere and designed to permit optimum smoke entry from any direction while rejecting light from outside the smoke alarm.
The light source is an infrared (invisible) LED which pulses every 8 seconds. The light sensor is a photodiode matched to the light frequency of the LED light source.
Under normal conditions, the light generated by the pulsing infrared LED is not seen by the light sensor, as it is positioned out of the direct path of the light beam. When smoke enters the sensing chamber, light from the pulsing LED light source is reflected by the smoke particles onto the photodiode light sensor.
At the first sighting of smoke, the device is put into a pre-alarm mode. This is indicated by a rapidly flashing LED on the face of the smoke alarm. Once the light sensor confirms smoke for 2 consecutive pulses inside the chamber, the light sensor produces the signal necessary to trigger the alarm and sound the electronic horn.
This technique of verifying the smoke condition, combined with a 5-to-1 signal-to-noise ratio, substantially reduces the possibility of nuisance alarms.
Features and Benefits
• 120VAC and 220VAC with 9VDC battery back-up
• Low or missing battery indicator
• 9VDC alkaline battery included
• Patented three-position test switch
• Includes 90db piezo solid state non-latching horn
• Tandem connection up to 12 units; 6 on relay models
• Nominal 3.0% sensitivity
• 5:1 signal-to-noise ratio
• Pulsing LED sensing chamber
• Full insect screen
• Solid-state LED condition indicator
• Quick-disconnect wiring harness
• Mounting hardware adapts to standard junction boxes
• Protective high air velocity gasket
• On-site maintenance washing program
• Compliant with NFPA Standards
• Temporal 3 evacuation sounding device (9123 and 9223)
Item # SD2.....$514
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