frequently asked questions
What products and services does Teltherm offer?
Teltherm supplies a wide range of process measurement instruments, including temperature sensors, pressure guages, flow and level measurement instruments, gas detection equipment and analytics instruments. They also offer calibration, repair, custom builds and technical support for these devices.
What industries does Teltherm serve in New Zealand?
Teltherm supports industries such as manufacturing, food processing, energy, utilities, petrochemical, scientific research and environmental monitoring, where accurate measurement and monitoring are critical.
Do you provide calibration services?
Yes. Teltherm offers IANZ‑accredited calibration services for temperature, pressure, humidity, gas detectors, analytical instruments and more. Calibration ensures your instruments measure accurately and comply with NZ standards. Check out our scope for further deatils.
What does IANZ accreditation mean for calibration?
IANZ accreditation means the calibration process meets international ISO/IEC 17025 standards for technical competence and traceability, providing confidence in measurement accuracy and regulatory compliance.
How often should my instruments be calibrated?
Calibration frequency depends on factors like usage, environmental exposure and quality requirements. For example, pressure and humidity instruments often need annual calibration, while some temperature sensors may require more frequent checks. Teltherm can help set the right schedule for you
Can Teltherm customise instruments for specific applications?
Yes. Teltherm’s team can work with you to customise measurement instruments or build specialist solutions tailored to your specific application or process. This includes adapting sensors, controls or complete systems to suit unique requirements.
Do you offer on‑site calibration and support?
Yes. Alongside in‑lab calibration, Teltherm can provide on‑site calibration and support services, which can reduce downtime and keep your systems operating efficiently.
What is the importance of temperature measurement in industry?
Accurate temperature measurement is vital in industrial processes as even small measurement errors can impact product quality, safety, energy efficiency and regulatory compliance. Teltherm instruments are designed to deliver reliable performance under industrial conditions
How do I choose the right measurement instrument?
Choosing the right instrument depends on the environment, expected range, accuracy needed and application. Teltherm’s experts can advise you on the most suitable sensor or device for your project.
How can I get a quote or technical advice?
You can contact Teltherm by phone or email via their website to request a quote, technical consultation or product recommendation tailored to your needs, ensuring you select the right solution for your measurement or calibration project.
Calibration Services & Process
What calibration services does Teltherm’s Calibration Lab provide?
Teltherm’s Calibration Lab offers IANZ‑accredited calibration for a wide range of instruments including temperature sensors, pressure guages, humidity monitors, infrared devices and gas detectors, all traceable to national standards to ensure accuracy and compliance.
What does IANZ accreditation mean?
IANZ (International Accreditation New Zealand) accreditation means the lab meets the internationally recognised ISO/IEC 17025 standard for technical competence, traceability and quality, giving confidence that your calibrated instruments are accurate and compliant.
Which types of instruments can be calibrated in your lab?
The lab calibrates temperature probes, infrared thermometers, pressure instruments, humidity sensors, gas detectors and analytical devices. Teltherm can also certify backflow testers and other specialised instruments depending on your requirements.
Do I need calibration for my instruments?
Yes. If your instruments are used for safety‑critical measurements, quality systems (e.g. ISO 9001), regulatory compliance, or customer reporting, regular calibration ensures they remain accurate and reliable.
5. FAQ: How often should I calibrate my instruments?
Calibration frequency depends on how often an instrument is used, its operating environment and industry requirements. Many pressure and temperature instruments are calibrated annually, while gas detectors often require calibration or bump testing every 6 months. Teltherm can advise on a schedule that suits your needs.
Can calibration be done on‑site at my facility?
Yes. Teltherm can arrange on‑site calibration for instruments that cannot be easily sent to the lab, such as permanently mounted devices or critical process equipment. On‑site services are subject to travel arrangements and may incur additional costs.
What’s involved in a calibration certificate?
An IANZ‑endorsed calibration certificate includes measured results, corrections and uncertainty data, documenting that your instrument was tested against known standards with traceable accuracy. This is useful for audits, quality systems and regulatory compliance.
How long does calibration take?
Turnaround times vary by instrument type and workload, but Teltherm aims to provide efficient service tailored to your requirements. Simple calibrations are often completed within days, while more complex instruments may take longer.
Do you repair instruments as well as calibrate them?
Yes. If an instrument needs adjustment or repair before it can be calibrated to specification, Teltherm’s technicians can diagnose and fix issues, then complete the calibration and certification in one service.
How do I arrange a calibration with Teltherm?
You can contact Teltherm by phone or email to discuss your needs, arrange instrument drop‑off or on‑site service, and get a quote. Their team will guide you through the process from booking to certificate issuance.
Pressure Instruments & Applications
What types of pressure instruments does Teltherm supply?
Teltherm offers a wide range of pressure measurement instruments including pressure guages, transducers, transmitters, switches and digital indicators suitable for industrial, scientific and process control applications throughout New Zealand.
What are pressure guages used for?
Pressure guages measure the pressure of gases or liquids in systems such as hydraulic lines, compressors, pipelines, boilers and tanks. They provide vital information to ensure systems operate safely and efficiently.
What is the difference between a pressure transmitter and a pressure gauge?
Pressure guages provide local visual readings, while pressure transmitters convert pressure changes into an electrical signal for monitoring or control in automated systems such as SCADA or PLCs.
How do I choose the right pressure instrument for my application?
Consider the pressure range, media type (gas or liquid), installation environment, accuracy requirements and output signal needed. Teltherm’s technical team can help you select the right instrument for your setup.
Do Teltherm pressure instruments need calibration?
Yes. Pressure instruments should be periodically calibrated to maintain accuracy and compliance, especially for quality systems or regulated industries. Calibration services are available through Teltherm’s Calibration Lab.
What pressure ranges do your instruments cover?
Teltherm’s range includes instruments covering low, medium and high pressure ranges, from vacuum and differential pressure to high‑pressure industrial applications. Specific ranges depend on the model selected.
Can pressure instruments be used outdoors?
Yes. Many models are designed with weather‑resistant housings and suitable ingress protection (IP ratings) for outdoor or harsh environments, but you should verify the specification for your particular application.
What do accuracy and resolution mean on a pressure instrument?
Accuracy defines how close the instrument’s reading is to the true pressure value, while resolution is the smallest change in pressure the instrument can detect and display. Higher accuracy and resolution are important in critical measurement settings.
How do I maintain my pressure instruments?
Regular checks, zeroing before use, keeping guages clean and dry, checking seals and ensuring instruments run within their rated pressure ranges will extend life and accuracy. For complex issues, Teltherm’s technicians can advise or service your instrument.
How can I get help choosing or ordering a pressure instrument?
Contact Teltherm by phone, email or the online enquiry form to discuss your requirements. Their technical support team can help you specify the best solution and provide a quote for supply or calibration.
Temperature Instruments & Applications
What temperature instruments does Teltherm supply?
Teltherm offers a wide range of temperature measurement instruments, including thermocouples, resistance temperature detectors (RTDs), digital thermometers, infrared thermometers, probes and temperature data loggers for industrial and laboratory applications.
What are thermocouples and when should I use them?
Thermocouples are temperature sensors made from two dissimilar metals that generate a voltage related to temperature. They’re ideal for high‑temperature environments like furnaces, kilns and industrial process control.
How is an RTD different from a thermocouple?
RTDs (Resistance Temperature Detectors) use a material whose resistance changes with temperature, offering higher accuracy and stability over a narrower range, great for precision applications like laboratory or HVAC systems.
Why would I choose a digital thermometer over other sensors?
Digital thermometers provide instant, easy‑to‑read temperature values without needing external signal conditioning. They’re useful for portable checks, food‑safety monitoring and general measurement tasks.
What is an infrared thermometer and when should I use one?
Infrared thermometers measure temperature without contact by sensing thermal radiation. They’re ideal for moving surfaces, hot objects, hard‑to‑reach areas or hygiene‑sensitive environments.
Do temperature instruments need calibration?
Yes. Accurate measurement requires periodic calibration to ensure readings remain precise over time. Teltherm can calibrate many temperature instruments through its accredited Calibration Lab
What temperature range should I consider when choosing a sensor?
Select a sensor with a range that exceeds your expected minimum and maximum temperatures. Thermocouples suit extreme temperatures, while RTDs and thermistors provide precision at moderate ranges.
How accurate are Teltherm’s temperature instruments?
Accuracy varies by model and technology, but quality sensors (such as precision RTDs and digital units) can provide accuracy to within ±0.1 °C or better. Always check product specifications for exact details.
Can temperature instruments be used outdoors or in harsh environments?
Yes. Teltherm stocks rugged instruments with appropriate environmental protection ratings (e.g., IP‑rated housings) for outdoor use, industrial conditions or washdown environments.
How do I choose the right temperature instrument for my application?
Consider the temperature range, accuracy needed, environment (indoor/outdoor), measurement type (contact vs contactless) and whether data output or integration with control systems is required. Teltherm’s technical team can help you select the best option.