Hanna HI98539 Checktemp® Dip Digital Thermometer
- Range: ‑20.0 to 80.0°C
- Accuracy: ±0.3°C precision
- Cable Length: 3 m silicone
- Protection: IP65 rated
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Description
Precision Temperature Measurement With CAL Check® Assurance
The Hanna HI98539 Checktemp® Dip Digital Thermometer is engineered for precise temperature measurement in professional environments where accuracy is paramount. Incorporating Hanna’s proprietary CAL Check® system, this device automatically verifies its calibration status every time it is switched on, displaying “CAL” and “‑0‑” to confirm that measurements remain accurate to the stated specifications. For users in industries governed by HACCP protocols, such as food and beverage manufacturing or cold chain logistics, this level of built‑in calibration assurance provides both confidence and compliance. The HI98539 uses a weighted stainless steel probe connected via a 3 m (9.9’) flexible silicone cable, housing a high‑performance NTC thermistor sensor. This combination delivers a temperature accuracy of ±0.3°C (±0.5°F) over a generous measurement range of ‑20.0 to 80.0°C (‑4.0 to 176.0°F). Whether monitoring large vats of liquid, verifying storage conditions, or ensuring process consistency, the Checktemp® Dip offers consistently dependable readings in seconds.
Robust Stainless Steel Probe For Liquid Immersion
The HI98539 is distinguished by its AISI 316 stainless steel weighted probe, designed specifically for immersion measurements. Stainless steel construction ensures resistance to corrosion, even when used in salty, acidic, or chemically treated liquids. The weighted design allows the probe to sink easily into the medium being measured without floating or drifting, guaranteeing stable readings in tanks, barrels, or containers of varying depths. The smooth machined finish enhances hygiene and simplifies cleaning after use, making it ideal for laboratories, food preparation facilities, beverage production lines, aquaculture tanks, and environmental monitoring stations. The 3 m silicone‑jacketed cable offers flexibility, resilience to heat, and resistance to moisture ingress, enabling the operator to place the device comfortably away from the measurement point while retaining full probe submersion. This engineering is complemented by IP65 environmental protection, assuring reliable operation in dusty or humid conditions.
Simple Operation With Selectable °C/°F Readout
Ease of use is a hallmark of the Checktemp® Dip’s design. The instrument offers a clear LCD display with large 7‑segment numerals, enabling quick reading even in low‑light conditions. Upon powering on, all LCD segments are briefly illuminated for verification. The user can choose between Celsius and Fahrenheit units by entering the setup mode via the SET button located inside the battery compartment. Switching units is straightforward, using the ON/OFF button to toggle between “°C” and “°F” before pressing SET to save the selection. This flexibility makes the HI98539 suitable for international operations where both metric and imperial temperature scales may be required by local standards or contractual specifications. The interface is intentionally minimal, avoiding complex menus, allowing operators at all skill levels to achieve accurate measurements without extended training sessions.
Practical Auto Shut‑Off And Battery Longevity
One of the thoughtful features of the HI98539 is its customizable auto‑off function, designed to conserve battery life. Users can select between an 8‑minute default setting, a 60‑minute option, or completely disable automatic shut‑off for continuous monitoring. Powered by three standard 1.5 V AAA alkaline batteries, the instrument offers an impressive average service life of approximately two years under typical use conditions. A low‑battery indicator appears when capacity drops below 10%, allowing proactive replacement and avoiding unexpected downtime. Hanna’s Battery Error Prevention System further safeguards measurement integrity by shutting down the device if voltage falls too low to support accurate readings. The battery compartment is easily accessible via the rear cover, with polarity markings ensuring correct installation. These features collectively minimize maintenance and ensure uninterrupted performance during critical measurement tasks.
Designed For Challenging Industrial And Food Environments
The HI98539 is purpose‑built for reliability in demanding environments. Operating effectively between ‑30 and 50°C (‑22 to 122°F) and at relative humidity levels up to 95%, this thermometer withstands a wide range of ambient conditions. IP65‑rated protection means the instrument is dust‑tight and safeguarded against water jets, making it suitable for both indoor and outdoor applications. In the food industry, such durability ensures the device can be used in refrigerated warehouses, production kitchens, or near steamy cooking stations without degradation. In industrial processing, it stands up to high‑humidity factory floors, chemical storage areas, and raw material mixing locations. This robustness extends the thermometer’s applicability across agriculture, aquaculture, beverage manufacturing, chemical production, and environmental science, allowing for dependable temperature verification wherever immersion measurement is necessary.
Key Applications Across Multiple Professional Sectors
The Hanna HI98539 Checktemp® Dip Digital Thermometer excels in numerous professional applications:
• Food and Beverage Quality Control – Ensures proper cooking, cooling, and storage temperatures, aiding HACCP compliance for safety and quality assurance.
• Industrial Process Monitoring – Validates temperatures in liquid baths, chemical tanks, and manufacturing processes where immersion readings are required.
• Aquaculture Management – Monitors water temperature in fish farming or shellfish hatcheries, ensuring optimal conditions for growth and health.
• Environmental Research – Provides accurate readings in rivers, lakes, or laboratory samples during ecological field studies.
In each of these uses, the weighted stainless steel probe design allows precise immersion readings without manual holding, freeing the operator to record or act on data quickly. The combination of CAL Check® accuracy verification, selectable unit display, and rugged environmental protection has earned the HI98539 a reputation as a dependable measurement instrument in diverse industries.
Authentic Global Availability Through tpt24.com Store
For those seeking the HI98539 Checktemp® Dip Digital Thermometer, tpt24.com is acknowledged as the world’s leading online store for this product. Customers worldwide benefit from guaranteed authenticity, ensuring that each instrument meets strict Hanna quality standards. Every unit is supplied complete with weighted stainless steel probe, 3 m silicone cable, new batteries, and a user instruction set. tpt24.com delivers globally, bringing this precision instrument directly to your location, regardless of region. By offering secure ordering, comprehensive customer support, and a guarantee of original manufacturer specifications, tpt24.com ensures buyers receive not only the thermometer itself but also peace of mind regarding its performance, durability, and compliance. For industries where measurement precision translates directly into safety, quality, and efficiency, purchasing from a trusted global source is indispensable.
Trusted Performance Supported By Hanna’s Warranty
Backed by a one‑year warranty, the HI98539 Checktemp® Dip Digital Thermometer reflects Hanna Instruments’ commitment to quality manufacturing and customer satisfaction. This coverage addresses defects in materials and workmanship when the device is used for its intended purpose and maintained according to instructions. Exclusions are applied for misuse, tampering, or neglect, as well as damage from environmental extremes outside rated specifications. The warranty process is straightforward: customers contact their local Hanna office, provide purchase details and serial number, and arrange shipping if repairs or replacements are required. Hanna’s established global service network ensures professional handling of warranty cases, adding an extra layer of confidence to the instrument’s adoption in critical workflows. Coupled with its rugged build, precise measurement capability, and intuitive operation, the warranty underscores why the HI98539 is a trusted professional tool worldwide.
Specifications
| Specification | Detail |
|---|---|
| Product Model | HI98539 Checktemp® Dip Digital Thermometer |
| Temperature Range | ‑20.0 to 80.0°C / ‑4.0 to 176.0°F |
| Temperature Resolution | 0.1°C / 0.1°F |
| Temperature Accuracy | ±0.3°C (±0.5°F) |
| Temperature Probe | Weighted stainless steel probe with 3 m (9.9’) silicone cable |
| Sensor Type | NTC thermistor |
| Selectable Units | °C or °F |
| Automatic Shut‑Off | 8 min (default), 60 min, or OFF |
| Battery Type / Life | 3 × 1.5 V AAA alkaline / approx. 2 years |
| Low Battery Indicator | Below 10% capacity |
| Environment Rating | ‑30 to 50°C (‑22 to 122°F), RH max 95%, IP65 |
| Dimensions | 107 × 59 × 17 mm (4.2 × 2.3 × 0.7″) |
| Weight | 109 g (3.8 oz.) |
| Supplied Accessories | Weighted stainless steel probe, 3 m silicone cable, batteries, manual |
| Warranty | 1 year |








