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Sensaphone Monitors and Temperatures Sensors for Refrigerators, Cold Storage and Freezers

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Question about which Sensaphone monitor will closely monitor commercial and medical freezers and refrigerators in our facility.

Q: "We need to monitor 8 different refrigerators and freezers where we keep medical supplies. Which Sensaphone units will meet our needs? Thanks. Sue."

Answer: With the limited information you gave, I will do my best to offer you choices to meet your needs.

Sensaphone has two low temperature sensor models

The FGD-0107is a unique 2.8K Temperature Sensor with Glass Bead Vial. This unit ideal for cold storage temperature monitoring. The glass bead filled vial buffers any momentary fluctuations that may cause a preliminary alarm dial out, such as defrost cycles, opening of doors, and fans circulating air. The glass beads will slow the response time of the sensor allowing normal daily operations to occur without having an alarm initiated. This is a highly recommended sensor for every cold storage application.


The Temperature Range that can be monitored depends upon which Sensaphone controller unit is being used:

  • 400, 800: -20° to 150°F (-30° to 65°C)
  • 1400, 1800, 2800, WEB600: -109° to 115°F (-85° to 57°C)
  • 2000: -125° to 124°F (-87° to 51°C)
  • Express II: -85° to 200°F (-65° to 93°C)

The IMS-4814 Ultra Low Temperature Sensor is designed to connect to the Sensaphone IMS product line (i.e. the IMS-1000 and the IMS-4000) and monitor temperatures in refrigerators or freezers. The electrical connection between the sensor and IMS unit is made via the attached RJ-45 patch cable. The package contains the 1) Ultra Low Temperature Sensor (1) Attached 7’ Patch Cable and (1) Attached 12’ of cable with weatherproof probe. The sensor probe may be secured inside equipment using the included clamp or it may be hung using tie wraps. Do not install the black plastic enclosure inside of a refrigerator or freezer. It is available with an optional NIST temperature certification. (IMS-4814-NIST) The Ultra Low Temperature Sensor comes with an attached 7’ cable with an RJ-45 plug on the end and a weatherproof probe with 12’ of cable. If the sensor installation is close to the IMS unit, you can plug it directly into an IMS environmental input. If the cable is too short you can use the included RJ-45 adaptor and a longer patch cable to extend the length. For applications where the sensor may be far from the IMS unit, you may utilize your existing network wiring infrastructure. For example, the sensor may be installed in another room or another floor. Connect the sensor to your structured wiring network via an RJ-45 jack. At the other end, connect a patch cable from your structured wiring patch panel directly to the Host or Node environment input.

  • Temp Range: -122° to 53°F (-86° to 12°C)
  • Humidity: 5–90% RH
  • Sensor type: Sealed thermistor probe
  • Accuracy: ± 3°F
  • Connector: 7’ Cable with RJ-45
  • Housing: Black plastic
  • Compatibility: IMS-4000, IMS-4000 Node, IMS-1000

So next you need to determine which IMS (Internet Monitoring System) unit you need to handle your monitoring issues. The Sensaphone IMS-1000 has 8 sensor inputs. Configuration is easy: all IMS Solution sensors are auto-configured when you plug them into the IMS-1000. The Ultra Low Temperature Sensor will identify itself as a 4-20mA transducer. On the Properties screen for this sensor you must select the sensor type: either Low Temperature (Deg F) or Low Temperature (Deg C). When a sensor is removed, or the connection is disrupted, the configuration data remains intact but the sensor will go into trouble status and generate a trouble alarm. When the sensor is plugged in again, or the connection is re-established,configuration data remains unchanged and the sensor returns to normal operating condition.

The Sensaphone IMS-4000 in combination with the IMS-4000 node can monitor up to 64 sensors.

Please look at our webpages and decide which features you need. There are cross references on the pages to most sensors and to the IMS-4000.

Thanks for your question.

Sincerely, Barbara

 


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