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Introducing SNS™ Temperature and Humidity Sensors
SNS Thermobuffers
A thermobuffer can be used with battery- and AC-powered single and dual probe temperature
sensors to simulate the actual temperature of contents within coolers or freezers. The thermobuffer
is a bottle of food-grade glycol into which the temperature probe is placed inside the refrigerator.
The thermobuffer simulates refrigerated items, which change temperature more slowly than the air
when the refrigerator door is opened. Using a thermobuffer with sensor devices limits the impact of
fluctuating air temperature on sensor readings and helps provide a higher degree of measurement
accuracy. The thermobuffer is effective to a minimum temperature of -27° F.
Accessory Part Number
SNSGRP
SNSGLY-1
Overview of SNS Sensor Network Installation
Prerequisites to SNS Sensor Installation
The following tasks must be complete before installing SNS Sensors.
•
Install and set up the SNS Application Management Platform (AMP)/Network Time Protocol
(NTP) server.
•
Enter the SNS Sensors license key in the AMP.
•
Assign the Sensor Admin role to the AMP administrator or other user login.
This installation guide assumes that the AMP and Sensors license are installed and that you can
log in to the AMP as a user with the Sensor Admin role. See the SNS AMP Installation and
Administration Guide and the SNS Temperature and Humidity Sensors User Guide for details.
Plan the Installation
Sensor device installation begins by planning where to place sensor devices and ensuring that the
wireless or wired network is available at these locations.
Note:
Sensor devices must have adequate signal to support wireless operation. Sensor
devices will work in areas where a wireless laptop can connect to the network or
where signal to noise level measures 20 dB or greater. If wireless signal is
inadequate, a wireless Access Point may be added in proximity to improve local
signal strength. AC-powered sensor devices can also be connected to the
Ethernet network via the RJ45 connector.
Configure Sensor Devices for the Network
Sensor devices arrive at your facility with no knowledge of the network. The next step in installing
the SNS Sensors network is to configure sensor devices. See Configure Sensors for the Network
on page 25 for details.
Install and Verify Sensor Devices
Once sensors are configured and you know they can connect to the network, they are ready for
installation in their permanent locations. See Install SNS Sensor Devices and Accessories on page
47 for details.
Primex Wireless, Inc.
Table 5: SNS Thermobuffer Accessories
Accessory Description
SNS Thermobuffer, 4 oz. Glycol Bottle for RTD Probe and Thermistor (NIST)
1 Gallon Food Grade Glycol
SNS™ Temperature and Humidity Sensors Installation Guide
Overview of SNS Sensor Network Installation
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