Temperature Threshold Monitoring System

Description and Purpose

Refrigeration is widely used to keep food or material within a temperature range for storage. Refrigeration is found in kitchen and food service facilities, laboratories, hospitals, schools, and other facilities. Critical temperature levels are also needed in computer server rooms.

If the facility has a number of refrigeration units, the system can monitor each one with its own identification. If the facility currently provides individual temperature sensing units, the system can unify them into a single, easier-to-use system, many times using the existing temperature monitoring equipment. This makes the collection of refrigeration units easier to manage from a single keypad annunciator. The system can also monitor the cold storage door using a door position sensor. It can even provide a panic alarm for the inside to allow trapped personnel to call for help.

Capabilities and configuration depends upon the control panel that you choose.

Figure 1: Connections for the Temperature
Threshold Monitoring System

Connections and Considerations

The table below refers to the drawing in Figure 1. If you are using this document on line, click the model number in the table below to see more information.

Item	Model No.	Description	Mounting Options	Notes
Ht	T-1000	Temperature Threshold Sensor	Wall: Flat Surface Wall: Double-gang Box
B	4193SN	Adapter: Serial Interface Module	Inside of monitored device.
O₁₂	AD25624	Power Supply (DC Voltage indicated)	In enclosure (#1451-24)	Selectable 12VDC or 24VDC operation when using XF30 transformer.
V	V-Plex	V-Plex™ Data Bus		Connects to addressable devices, zone input devices and relay modules.
Y	Genesis: 4506	2-wire, 18AWG, Fire rated, Non-shielded	Use Genesis 1118 for Non-Fire Applications	This part number is an example. See your building and electrical codes for actual jacketing requirements.

Solving Refrigeration Temperature Issues

Those who use refrigeration as a critical service for preserving or processing material are challenged with keeping temperature levels within an acceptable range. The system can monitor the refrigerated compartment or room and sense when the temperature is too warm or too cool. When the compartment is out of tolerance, the system can provide indications locally and transmit the indication to the central station to begin a pre-determined policy.

Power failures and extended door propping cause the temperature to drift out of range. The system can provide an immediate notification so that users can take action. When notified, users will typically find a tripped fuse, a power failure, the door ajar, or that the refrigeration unit is in need of repair. Correcting the causal issue quickly saves the value of the cold compartment’s contents.