Thiết bị hiệu chuẩn Tempsens CALsys 1200L

CALsys 1200L, CALsys 1200 3Z, CALsys 1500L, CALsys 1700L

An evaluation report of the CALsys 1200L Calibration Furnace

Manufactured by Tempsens Instruments (II) Pvt Ltd

INTRODUCTION

The CALsys 1200L is the latest version of Tempsens most popular High Accuracy Dry Block calibration Furnace. It works over the temperature range 300 Deg C to 1200 Deg C.

At Tempsens it is our earnest desire to present for our customer’s consideration as much useful information as possible and to this end we have spent a substantial amount of time evaluating our products.

The results of the evaluation of an accurate calibration Furnace can be presented in many formats some of which will give an optimistic or indeed a pessimistic view of how the products operate.

This evaluation report describes the performance of the Tempsens make CALsys 1200L that can be used as a guide to the laboratory performance.

A.  Radial Temperature Homogeneity:

What is Radial Temperature Homogeneity and why it is important to measure

Radial uniformity refers to temperature differences between wells of the block or sleeve. This nonuniformity  is  strongly  influenced  by  the  difference  between  the  block  and  ambient temperature. A larger temperature difference from ambient will result in a larger potential temperature calibration error. Therefore radial inhomogeneity should be measured at extremes (relative to ambient temperature) in an instrument’s temperature range.

Test method:

The temperature differences between the zones in the individual bores provided for the measurements are measured with one or several suitable thermometers at three different temperature  representative  of the field  of  application  and covering  the extreme  temperature which may occur. If there is only one bore no measurement has to be carried out.

For CALsys 1200L, we consider 300 Deg C, 700 Deg C and 1200 Deg C respectively. As example at 300 Deg C two Thermocouples (designed for small steam conduction) were placed in each of the holes. Measurements were recorded and then the probes were interchanged between the two pockets and repeat measurements made. The temperature Difference was calculated to remove the small offsets between the two probes.

For calibrators having fewer than four wells, it may be necessary to determine differences by cyclic exchange. The difference between two wells with two thermometers may be determined with the following Formula:

Temperature Difference = [((P1W1 – P1W2) + (P2W1 - P2W2)) / 2}]

Note: P1 = probe 1, W1 = well 1 and so on. P1W1 is read as the value of probe 1 in well 1.

CALsys 1500L

Temperature Range : 500 to 1500°C
Temperature Resolution : 1.0°C
Stability : ±0.4°C at 500°C ±0.7°C at 1000°C ±1.0°C at 1500°C
Uniformity : ±0.6°C at 500°C ±0.8°C at 1000°C ±1.2°C at 1500°C
Controlling Sensor : PT-RH/PT T/C
Method of Control : Digital self tuned PID Controller
Insert Construction : Dia 37 x 245 mm long (2X6mm & 2X8 mm
holes) of 140mm insertion depth
Heaters : Silicon Carbide Spiral Rod Heater
Time to Reach Max Temp : 2 Hrs
Computer Interface : RS - 232
Operating Temperature : 20 to 45°C
Power Requirement : 230 VAC, 3.0 KW
Dimensions : 590(H) x 450(W) x 530(D) mm
Weight : 55 Kg (without packing)
Stability : ±0.01°C at -35°C ±0.05°C at-0°C ±0.04°C at 200°C
Uniformity : ±0.03°C at -35°C ±0.07°C at 0°C ±0.07°C at 200°C
Temperature Resolution : 0.01°C
Time to Reach Max Temp : 1.5 Hrs
Medium Cooling : Methanol + Water
Medium Heating : Silicon Oil
Controlling Sensor : PT-100
Volume : 7 Ltr.
Access Opening : 157(L) x 142(W)
Depth : 127 mm
Method of Control : Digital self tuned PID
Controller
Computer Interface : RS - 232
Operating Temperature : 20 to 25°C
Wetted Part : SS-304
Power Requirement : 230 VAC, 2.0 KW
Dimensions : 540(L) x 220(W) x 620(H)mm
Weight : 41 Kg

CALsys 1700L

Temperature range : 500 to 1700°C
Voltage : 230 V AC
Power : Maximum
Supply Frequency : 50/60 Hz
Resolution : 0.1°C
Stability : ±0.5°C at 500°C ±1.0°C at 1200°C ±1.5°C at 1700°C
Uniformity : ±0.6°C at 500°C ±1.4°C at 1200°C ±1.9°C at 1700°C
Controlling sensor : B type T/C Duplex
Time to reach max. Temp. : 3 hours
Operating Temperature : 20 to 45°C
Controller Specifications : Eurotherm P104 series
Over temperature protection : Autonics controller with B Type T/C
Stabilization Time : 15 to 20 Min.
Dimensions : 640(H) x 500(W) x 550(D) mm
Insert Construction : 2 x 6.5, 2 x 8.5 mm
with 225mm depth
Weight : 80kg (without packing)