CORE Temperature Probe — Food temperature probe for guided HACCP checks

Frequently asked questions

What is the difference between the EDGE and BLOCK families?

EDGE is the display-equipped line: ambient temperature and humidity, external probes down to -55 °C (-67 °F), CO2, plus pharmacy and in-transit variants. Every EDGE unit has an on-screen display, an audible buzzer and a visible on-device alarm, and most models come in matched WiFi and cellular pairs. BLOCK is the industrial and retrofit line: one compact WiFi housing (IP31, working down to -30 °C (-22 °F)) with sensor ports for fluid pressure, current clamps, CO2 and 4-20 mA loops. Several older BLOCK models are being retired, and the coming EDGE Multi will take over pressure and current monitoring. The principle is swap the probe, not the device, because calibration lives with the plug-in sensor, so recertifying means a new probe rather than an RMA.

What are the EDGE variants and what does each one add?

Essential logs ambient temperature and humidity at ±0.2 °C (±0.36 °F). Essential PLUS measures through a fixed external temperature and humidity probe, so the measurement point sits away from the logger, and takes up to two external temperature probes. Thermo ships with two detachable digital probes covering -55 °C to +125 °C (-67 °F to +257 °F) for freezers and cold rooms. Pharma ships with two NIST-traceable probes rated -20 °C to +50 °C (-4 °F to +122 °F). Air adds CO2 alongside temperature and humidity. GEO adds geo-location from cell towers and WiFi networks, sent with every upload, for shipments in transit. EDGE Lite, not released yet, is a compact min/max WiFi thermometer (not a data logger) reading ambient temperature and one external probe at ±0.5 °C (±0.9 °F). Most variants come in matched WiFi and cellular pairs.

Do you make anything beyond loggers — meters, gateways, handheld probes?

Yes. The Cellular Water Meter is an ultrasonic meter with its own 4G modem and managed SIM, so there is no gateway and nothing to pair; you claim it to your LF Cloud account yourself with its serial number and DUID, and support can help if you run into trouble. MODGATE brings Modbus RTU and TCP equipment registers into LF Cloud, and the LF M-Bus Cloud Bridge reads wired M-Bus utility meters. AgriMax reports soil moisture content (MC), measured by capacitance, and soil temperature, and LoggerFlex Halo shows live conditions on a round display at the point of use.

Does a freezer or cold-room install shorten battery life?

Yes, to a degree. Extreme cold and extreme heat both reduce cell efficiency, so a unit logging inside a deep freezer will not match a bench figure. Keep the device inside its stated operating range, use lithium cells where you can, and where the enclosure allows it mount the logger outside the cold space on an external probe. One thing that is not a fault: the EDGE display pauses updates below 0 °C (32 °F) to protect the screen, so a static display in a freezer is normal and the device is still recording.

Can I get a battery-life figure for my exact configuration before I order?

Yes, and it is the right way to specify a fleet. Rated life is a function of your recording interval, sync interval, alarm rate, radio type, signal strength and temperature, so a single headline number tells you little on its own. Send those settings, the environment and the number of monitoring points to your authorized LoggerFlex distributor, or talk to an engineer through the contact form, and you get a recommended configuration with an expected runtime attached. Hardware is configured and quoted per application rather than sold from a list.

How will I be alerted if a reading goes out of range?

LF Cloud sends an automated phone call, an SMS and an email at the same time, to an unlimited number of recipients. Every recipient is notified at once, with no escalation order, and notifications repeat about once an hour while the alarm lasts, so an excursion reaches your phone day or night. EDGE models with a display also raise a local alarm, an audible buzzer and a visual alert on the screen, so staff on site see it even if nobody is looking at a phone. On cellular units the built-in eSIM keeps alarms going out when your Wi-Fi drops.

Can I send alerts to more than one person?

Yes, to an unlimited number of people. Each recipient needs their own free LoggerFlex account and the device shared with them, because sharing is how someone becomes an alarm recipient. Adding new people requires Premium Access; on the free tier existing shares keep working but you cannot invite more. Each person manages their own phone number and notification preferences under Alarm receivers in My Profile, and email is always on. If someone should see the data but never be paged, share the device with the Silent Viewer role.

Do I have to ship the device back to have it recalibrated?

No. Because calibration lives with the sensor, you replace the probe rather than the logger. Order a newly calibrated probe from your distributor, unplug the old one and plug the new one in. There is no RMA and no lab shipment, which is how the swap avoids monitoring downtime and keeps renewal costs low. Because LF Cloud flags an approaching expiry, a probe swap can be scheduled into a planned maintenance visit rather than handled as an urgent job after a certificate has already lapsed.

What is the difference between the Pharma probe and the standard external probe?

They are not interchangeable. The NIST-traceable Pharma probe is a narrow-range probe for −20 °C to +50 °C (−4 °F to +122 °F), shipped in pairs with EDGE Pharma and sized for vaccine and pharmacy refrigerators. The standard external digital probe used on EDGE Thermo and the probe-equipped BLOCK models covers −55 °C to +125 °C (−67 °F to +257 °F) for freezers, cold rooms and process work. Both are rated ±0.5 °C (±0.9 °F); on the standard probe that accuracy applies from −10 °C to +85 °C (+14 °F to +185 °F). Pharma copy also describes an ethanol-buffered probe that tracks product temperature rather than air, so routine door openings do not raise false excursions.

How do returns and RMAs work?

In Canada and the USA you can contact LoggerFlex directly; elsewhere, returns and RMAs run through the distributor that supplied the device, who raises the claim, handles the logistics and confirms the terms that apply to your order. Start with the product manual, and if the device is genuinely faulty, talk to an engineer through the contact page so the fault is diagnosed before anything ships. Note that calibration is not an RMA: NIST certificates are issued to the sensor, not the device, so you renew by plugging in a newly calibrated probe instead of sending hardware away.

How do I order spare probes, accessories or NFC tags?

Through the same distributor, on the same quote. The public catalog lists loggers, meters, gateways and soil sensors; probes, flood-detector kits, sensor extensions, dry-contact cables and covers are specified with your configuration or ordered as spares, so give your distributor the part number of the device they fit. Replacement calibrated probes are the normal way to renew a NIST certificate, and they ship without taking the logger out of service. Microthermo NFC tags are single-use, so plan quantities per shipment and ask your distributor about order quantities and lead time.

Do I have to ship devices back for recalibration?

No. The NIST-traceable certificate is issued to the sensor, not the device, so renewal means buying a newly calibrated probe and plugging it in. Nothing goes back to a lab and the installation stays live. Certificates are valid for 3 years in use, or 5 years on the shelf. EDGE supports optional NIST certificates on up to two external sensors per device, the E-INK display shows certificate validity with a 60-day countdown as expiry nears, and LF Cloud emails reminders before it lapses. Order replacement probes through the distributor who supplied the loggers.