New Arrival China High Precision Thermometer - PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran

Short Description:


Product Detail

Product Tags

Related Video

Feedback (2)

Assume full responsibility to meet all demands of our clients; achieve continuous advancements by promoting the growth of our clients; become the final permanent cooperative partner of clients and maximize the interests of clients for Black-Body Cavity Calibration Baths, Temperature Uniformity Survey Systems, Pressure Generator, In case you are intrigued in almost any of our merchandise, remember to will not hesitate to make contact with us and take the initial step to create up a prosperous enterprise romance.
New Arrival China High Precision Thermometer - PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran Detail:

PR1231/PR1232Standard Platinum-10% Rhodium/Platium Thermocouple

Part1 Overview

The first and second grade standard platinum-iridium 10-platinum thermocouples which have high accuracy good physical and chemical properties, good oxidation resistance at high temperatures, good stability and reproducibility of thermoelectromotive force. Therefore, it is used as a standard measuring instrument in (419.527~1084.62) °C , it is also used to temperature magnitude transmit and precision temperature measure in the temperature range.

Part2 Technical parameters

Parameter index

First grade platinum-iridium 10-platinum thermocouples

Second grade platinum-iridium 10-platinum thermocouples

Positive and negative

The positive is a platinum-rhodium alloy (platinum 90% rhodium 10%), the negative is pure platinum

electrode

Two electrodes diameter is 0.5-0.015mm length is no less than 1000mm

Requirements of the thermal electromotive force

Measure junction temperature is at Cu point(1084.62℃Al point(660.323℃)

Zn point(419.527℃) and reference junction temperature is 0℃

E(tCu)=10.575±0.015mV

E(tAl)=5.860+0.37 [E(tCu)-10.575]±0.005mV

E(tZn)=3.447+0.18 [E(tCu)-10.575]±0.005mV

Stability of Thermo-electromotive force

3μV

5μV

Annual change Thermo-electromotive force at Cu point(1084.62℃

≦5μV

≦10μV

Working Temperature Range

300~1100℃

Insulating sleeve

Double hole porcelain tube or corundum tube

Outer diameter(3~4)mm, hole diameter(0.8~1.0)mm, length(500~550)mm

Part3 Application Instructions

standard platinum-iridium 10-platinum thermocouples must be in accordance with the national delivery system table,National verification procedures must be implemented. First grade standard platinum-iridium 10-platinum thermocouples can be used to measure second grade,Ⅰ grade,Ⅱ grade platinum-iridium 10-platinum thermocouples and Ⅰ grade base metal thermocouples; Second grade platinum-iridium 10-platinum thermocouples can only used to measure Ⅱ grade base metal thermocouples

National verification code

National verification name

JJG75-1995

standard platinum-iridium 10-platinum thermocouples calibration specification

JJG141-2013

Working precious metal thermocouples calibration specification

JJF1637-2017

base metal thermocouple calibration specification

Part4 Maintenance and preservation

1. The standard thermocouple calibration period is 1 year, and every year the standard thermocouple must be calibrated by metrology department.

2. The necessary supervisory calibration should be performed according to the usage.

3. The work environment of the standard thermocouple should be clean to avoid contamination of the standard thermocouple.

4. The standard thermocouple should be placed in a non-polluting condition and protected from mechanical stress.

Part5 Precautions when use

1. The insulation tube cannot be used at high temperature roasting. The original insulation tube is used after strict cleaning and high temperature roasting.

2. The insulation tube ignores positive and negative, which will cause the platinum pole to be contaminated and the thermoelectric potential value to decrease.

3. Randomly the standard thermocouple insulation tube with cheap wire will contaminate the standard thermocouple, and the protective metal tube must be used for the verification of the base metal thermocouple.

4. The standard thermocouple cannot be suddenly placed in the temperature-regulating furnace, nor be taken out from the temperature-regulating furnace. The sudden-heat and cold will affect the thermoelectric performance

5.Under normal circumstances, the verification furnace for the precious metal thermocouple and the base metal thermocouple should be strictly distinguished; if it is impossible, the clean ceramic tube or corundum tube(diameter about 15mm) should be inserted to the furnace tube for protecting precious metal Thermocouples and standard thermocouples from base metal thermocouple pollution.


Product detail pictures:

New Arrival China	High Precision Thermometer	- PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran detail pictures

New Arrival China	High Precision Thermometer	- PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran detail pictures

New Arrival China	High Precision Thermometer	- PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran detail pictures

New Arrival China	High Precision Thermometer	- PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran detail pictures


Related Product Guide:

We always continually offer you the most conscientious purchaser services, and the widest variety of designs and styles with finest materials. These efforts include the availability of customized designs with speed and dispatch for New Arrival China High Precision Thermometer - PR1231/PR1232 Standard Platinum-10% Rhodium/Platium Thermocouple – Panran , The product will supply to all over the world, such as: Swansea, Australia, India, The credibility is the priority, and the service is the vitality. We promise we have now the ability to offer excellent quality and reasonable price items for customers. With us, your safety is guaranteed.
The after-sale warranty service is timely and thoughtful, encounter problems can be resolved very quickly, we feel reliable and secure.
5 Stars By Julie from Comoros - 2018.11.04 10:32
High Quality, High Efficiency, Creative and Integrity, worth having long-term cooperation! Looking forward to the future cooperation!
5 Stars By Amelia from Ukraine - 2017.11.20 15:58