Anritsu Meter HD-1250E / HD-1250K Handheld Thermometer

Overview

The Anritsu Meter HD-1250E / HD-1250K is a precision-engineered handheld thermometer designed for field-deployable, high-reliability temperature measurement in industrial maintenance, laboratory verification, HVAC commissioning, and quality assurance environments. Built upon thermocouple-based sensing architecture, it supports E-type (chromel–constantan) and K-type (chromel–alumel) inputs—two of the most widely adopted thermocouple standards globally—and delivers traceable accuracy calibrated against internationally recognized reference conditions. Its core measurement principle relies on cold-junction compensation (CJC) using an integrated, thermally stabilized reference junction sensor and digital linearization aligned with IEC 60584-1:2013—the international standard governing thermocouple electromotive force (EMF) characteristics. This ensures metrological consistency across temperature ranges without reliance on analog approximations. The instrument operates within a controlled environmental envelope (0–40 °C, ≤80% RH non-condensing), and its robust mechanical design—including IPX5-rated ingress protection—enables reliable use in damp, dusty, or intermittently wet locations such as boiler rooms, refrigeration plants, or outdoor process skids.

Key Features

• High-accuracy thermocouple measurement with dual-resolution capability: 0.1 °C resolution over −104.9 °C to +504.9 °C (E/K), automatically switching to 1 °C resolution outside this band for optimal signal-to-noise ratio.
• Integrated cold-junction compensation sensor with ±0.2 °C accuracy at 25 °C and low thermal drift (±0.01% F.S./°C), minimizing ambient-induced error during rapid environmental transients.
• IPX5-rated enclosure providing protection against water jets from any direction—validated per IEC 60529—suitable for use in splash-prone industrial settings.
• Backlit, large-format LCD display with adjustable contrast, enabling legible readings under low-light or high-glare conditions.
• Extended battery life: up to 300 hours of continuous operation on four standard AA alkaline cells, reducing operational downtime and logistical burden in remote deployments.
• Dual operating modes: real-time measurement with P/V HOLD for peak (maximum) and valley (minimum) capture, plus manual or time-interval logging (9 programmable intervals) with onboard storage of up to 9999 data points.
• Direct data retrieval via AMS-100 PC software, supporting CSV export, timestamped traceability, and post-acquisition analysis—compatible with internal audit and GLP-aligned documentation workflows.

Sample Compatibility & Compliance

The HD-1250E/K accepts standard miniature thermocouple probes with ANP-series connectors, ensuring compatibility with a broad range of off-the-shelf and application-specific sensors—including surface contact, immersion, air/gas, and high-temperature ceramic-sheathed variants (sold separately). It does not support RTD, thermistor, or infrared inputs. All measurements comply with IEC 60584-1:2013 for thermocouple EMF linearity and cold-junction compensation methodology. The device carries CE marking per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and conforms to RoHS 2011/65/EU for hazardous substance restrictions. While not certified for intrinsic safety or ATEX/IECEx zones, its low-power architecture and non-sparking design make it suitable for general-purpose use in non-hazardous areas under ISO/IEC 17025-compliant calibration regimes.

Software & Data Management

Data acquisition and reporting are facilitated through the optional AMS-100 Windows-based software suite. AMS-100 enables bidirectional communication via USB interface (with optional adapter), allowing users to configure logging parameters, download stored datasets, apply user-defined metadata tags, and generate PDF or CSV reports with embedded timestamps, instrument ID, probe type, and calibration status. Audit trails are preserved in accordance with GLP principles; all data transfers are logged with operator ID and system timestamp. The software supports batch export for integration into LIMS or MES platforms and includes basic statistical functions (min/max/mean/std dev) for preliminary QA/QC assessment. No cloud dependency or vendor-hosted infrastructure is required—data remains fully under end-user control.

Applications

• Preventive and predictive maintenance of rotating equipment (bearings, motors, gearboxes) where localized overheating indicates incipient failure.
• Validation of thermal profiles in sterilization autoclaves, ovens, and environmental chambers per ISO 17025 and FDA 21 CFR Part 11 (when used with validated AMS-100 workflows).
• Commissioning and balancing of HVAC systems, including duct static pressure differentials, coil surface temperatures, and condensate line monitoring.
• Process validation in food processing, pharmaceutical manufacturing, and chemical synthesis where temperature excursions must be documented and reviewed.
• Educational laboratories requiring portable, NIST-traceable instrumentation for thermodynamics and heat transfer experiments.

FAQ

What thermocouple types does the HD-1250E/K support?
It supports E-type (−200 °C to +800 °C) and K-type (−200 °C to +1370 °C) thermocouples exclusively, using standardized ANP connectors.
Is the unit supplied with a calibration certificate?
Yes—a factory-issued test report (not a full ISO/IEC 17025 calibration certificate) is included, documenting as-delivered accuracy at key reference points.
Can the device operate while charging?
No. The HD-1250E/K is powered solely by replaceable AA alkaline batteries; no AC adapter or rechargeable battery option is available.
How is data integrity ensured during PC transfer?
AMS-100 performs CRC-16 checksum validation on all transmitted data blocks and logs transfer success/failure with timestamps in its local activity log.
Does the instrument meet FDA 21 CFR Part 11 requirements?
The hardware itself is not Part 11–certified; however, when deployed with AMS-100 in a validated environment—including electronic signatures, audit trails, and role-based access controls—it may support Part 11–compliant workflows per organizational SOPs.