Grant TXSEP Temperature Probe

Overview

The Grant TXSEP Temperature Probe is a high-accuracy, precision-engineered sensing device designed for reliable and repeatable temperature measurement in laboratory, quality control, and industrial process monitoring environments. Built upon a platinum resistance thermometer (Pt100) sensing element, the probe operates on the well-established principle of electrical resistance variation with temperature—providing stable, linear, and traceable output across its operational range. Its stainless steel 316 sheath ensures chemical resistance and mechanical durability, while the integrated PTFE-insulated lead wire enables safe use in humid, corrosive, or sterilizable settings. The TXSEP is not a standalone instrument but an OEM-grade sensor module intended for integration into larger measurement systems—including Grant’s own temperature controllers, data loggers, and environmental chambers—as well as third-party SCADA, PLC, and DAQ platforms compliant with standard 4–20 mA or 0–5 V analog outputs (configuration dependent on host system interface).

Key Features

• Pt100 Class A accuracy per IEC 60751:2022 (±0.15 °C at 0 °C, ±0.3 °C at 100 °C)
• Stainless steel 316 probe sheath with 6 mm outer diameter and 100 mm immersion length (standard configuration)
• PTFE-insulated, flexible 2-meter cable with 4-conductor shielded construction for noise immunity
• IP67-rated connector housing for protection against dust and temporary water immersion
• Operating temperature range: −50 °C to +250 °C (continuous), with short-term tolerance up to +280 °C
• Response time (t₉₀): <12 seconds in stirred water at 25 °C, optimized for dynamic thermal profiling
• Calibration certificate available traceable to UKAS-accredited standards (optional at time of order)

Sample Compatibility & Compliance

The TXSEP probe is compatible with liquid, semi-solid, and gaseous media where direct contact measurement is required—including aqueous solutions, oils, glycols, air streams, and sterilization chamber vapors. It is not suitable for high-pressure autoclave cycles exceeding 3 bar or abrasive particulate suspensions without protective thermowell integration. Regulatory compliance includes adherence to RoHS 2011/65/EU and REACH (EC) No. 1907/2006. When deployed within validated laboratory systems, the probe supports GLP and GMP workflows when paired with audit-trail-capable data acquisition software meeting FDA 21 CFR Part 11 requirements for electronic records and signatures.

Software & Data Management

As a passive analog sensor, the TXSEP does not include embedded firmware or onboard memory. Its signal output must be conditioned and digitized via external instrumentation—such as Grant’s TC100 temperature controller, the Unidata DL1000 series loggers, or industry-standard DAQ hardware from National Instruments or Keysight. When integrated into compliant systems, temperature data can be timestamped, logged at user-defined intervals (100 ms to 60 s), exported in CSV or Excel format, and archived with metadata including calibration date, operator ID, and environmental context. Optional software packages support automated alarm generation, statistical process control (SPC) charting, and deviation reporting aligned with ISO 9001:2015 clause 8.5.1.

Applications

• Verification and mapping of temperature uniformity in stability chambers and incubators (per ICH Q5C and ISO 14644-3)
• In-process monitoring of bioreactor jacket coolant loops and fermentation broth profiles
• Calibration reference point in multi-probe validation studies for pharmaceutical clean steam systems
• Thermal validation of lyophilizer shelves and condenser surfaces during cycle development
• Environmental monitoring in ISO Class 5–8 cleanrooms per EU GMP Annex 1 (2022 revision)
• Long-term drift assessment in HVAC commissioning and qualification protocols

FAQ

Is the TXSEP probe supplied with a calibration certificate?
A factory calibration report is included by default; UKAS-traceable certification is available as a configurable option at time of order.
Can the TXSEP be autoclaved?
No—the probe is not rated for repeated autoclave cycles; use only with a reusable stainless steel thermowell if exposure to saturated steam at 121 °C/15 psi is required.
What is the recommended replacement interval for routine QC use?
Under normal laboratory conditions with daily use and proper handling, recalibration is advised every 6 months; annual full verification is recommended per ISO/IEC 17025:2017 Clause 7.7.
Does Grant offer custom probe configurations?
Yes—length, sheath material (e.g., Hastelloy C-276), connector type (M12, Mini-DIN, or bare leads), and output signal conditioning (4–20 mA HART, RS-485 Modbus RTU) are available under OEM agreement.
Is the TXSEP compatible with non-Grant data loggers?
Yes—provided the host system accepts Pt100 input with 2-, 3-, or 4-wire configuration and supports standard excitation current (typically 1 mA).