Portable Logger Thermohygrometer Pt100 — Delta Ohm HD2101.2

The Delta Ohm HD2101.2 is a professional handheld thermo‑hygrometer with integrated data logger designed for demanding field and laboratory work. It combines precision temperature measurement with Pt100 or Pt1000 probes and reliable relative humidity sensing via combined probes, delivering fast, traceable readings and a 38,000‑sample memory. With its robust IP66 enclosure, USB and RS232 connectivity, and advanced psychrometric calculations such as dew point, absolute humidity, mixing ratio and enthalpy, the HD2101.2 turns every measurement into actionable insight for HVAC, quality control and environmental monitoring.

Key Benefits and Applications

• High‑accuracy results you can trust — Instrument accuracy of ±0.1 °C and ±0.1 % RH ensures consistent, repeatable measurements for audits, validation and process control.
• One instrument, many tasks — Use combined humidity and temperature probes for ambient monitoring or fit Pt100 and Pt1000 probes for immersion, penetration, air or contact temperature checks across industrial processes and laboratories.
• Actionable psychrometrics on site — Calculate dew point, wet‑bulb temperature, partial vapour pressure, absolute humidity, mixing ratio, enthalpy and comfort indices to make immediate HVAC balancing and IAQ decisions.
• Field‑ready durability — IP66 protection with ABS and rubber housing resists dust, water jets and rough handling in plant rooms, cleanrooms and outdoor campaigns.
• Traceable logging and reporting — Store up to 38,000 samples with selectable intervals from 1 s to 1 h and stream data in real time to a PC or portable printer for effortless documentation.
• Easy calibration and probe management — SICRAM smart probes carry their factory calibration data, enabling quick swaps and simplified maintenance with optional saturated‑salt checks.
• Ideal for HVAC, pharma, food and heritage — Commission air‑handling units, verify storage conditions, validate production lines and protect museums and archives with one versatile meter.

Featured technical specifications

• Measurement ranges — Temperature with Pt100 or Pt1000 from −200 to +650 °C. Relative humidity from 0 to 100 % RH without condensation. Dew point indication from −40 to +60 °C Td.
• Resolution and instrument accuracy — Resolution of 0.1 °C and 0.1 % RH. Instrument accuracy ±0.1 °C and ±0.1 % RH excluding the probe contribution.
• Probe compatibility — Works with combined relative humidity and temperature probes of the HP series and temperature probes of the TP47 and TP49 families for immersion, penetration, air and contact. Supports Pt100, Pt1000 and Ni1000 sensors.
• Data logging capacity — Internal memory for 38,000 samples organised in pages. Logging interval selectable from 1 s up to 1 h with real time clock for timestamped records.
• Connectivity — Galvanically isolated RS232C and galvanically isolated USB 1.1 and 2.0 on the HD2101.2 for data transfer to PC or portable printer.
• User functions — Max, Min and Average calculation, relative measurement mode, HOLD and auto power off that can be disabled.
• Display — Large two‑line LCD with 4½ digits. Visible area 52 × 42 mm for clear reading of primary and secondary parameters.
• Power and autonomy — Four 1.5 V AA batteries or external mains adapter. Typical autonomy of 200 h with 1800 mAh alkaline cells. Stored data remain safe regardless of battery charge.
• Environmental limits — Operating temperature from −5 to +50 °C. Storage from −25 to +65 °C. Working relative humidity from 0 to 90 % without condensation.
• Protection and build — IP66 enclosure made of durable ABS with protective rubber for dependable field performance.
• Dimensions and weight — 185 × 90 × 40 mm and 470 g including batteries.
• Available units — °C, % RH, grams of vapour per kilogram of dry air g/kg, grams per cubic metre g/m³, hectopascal hPa, joules per gram J/g, plus psychrometric indicators Td, Tw, DI and NET.

Why this instrument is the perfect choice for your project

Choose the HD2101.2 at Stratosens.com to combine manufacturer‑level expertise with responsive local support. Our team helps you select the right probes for your application, provides calibration options for regulatory compliance, and delivers fast fulfilment so your projects stay on schedule. With reliable after‑sales assistance, compatible accessories and practical advice from specialists, Stratosens.com ensures you get maximum value and long‑term performance from your Delta Ohm HD2101.2.