Features
- Accurate to ±0.04°C using the external reference sensor
- Excellent stability: 0.01°C
- Wide temperature range
- RTC-158: -22 to 155°C (-8 to 311°F)
- RTC-250: 28 to 250°C (82 to 482°F)
- Unique active dual-zone block for improved temperature homogeneity
- Dynamic Load Compensation for perfect temperature uniformity in the insert
- Display indicator for temperature uniformity
- Intelligent reference sensors hold the calibration data (coefficients) of the reference sensor
- USB communication
- High speed heating and cooling times
- Best performing dry-block with regard to the EURAMET/cg-13/v.01 guideline for testing of dry-blocks
The Ametek Jofra RTC-158 and RTC-250 are advanced reference temperature calibrators. Combining dry-block and liquid bath technology, the RTC-158 and RTC-250 are designed to calibrate oddly sized and shaped sensors or multiple sensors at once. Both calibrators offer a host of innovative features along with AMETEK's long history of providing reliable, low-drift calibration instruments.
The Ameteck Jofra RTC-158 has a temperature range of -22° to 155°C (-8° to 311°F), while the RTC-250 has a temperature range of 28° to 250°C (82° to 482°F). Both units boast outstanding accuracy and stability while featuring Ametek's Dynamic Load Compensation (DLC) system that provides perfect temperature uniformity in the insert no matter the number or size of the sensors immersed. The calibrators also offer unique intelligent sensors for plug ‘n' play connectivity, an easy-to-read full-color 5.7-inch VGA display, and a USB connection for improved communications and software downloads.
The Ametek Jofra RTC-158 and RTC-250 reference temperature calibrators are available in three configurations: RTC-A reference temperature calibrator, RTC-B reference temperature calibrator with input for reference sensor, DLC sensor and sensors-under-test, and RTC-C reference temperature calibrator with input for reference sensor and DLC sensor. The RTC-158 and RTC-250 can be used without an external reference sensor. However, users will obtain better accuracies and realize the calibrator's full potential by utilizing the STS-200 reference sensor. Both the STS-200 and DLC sensors contain all individual calibration data regarding the sensor, allowing users to change the reference sensor and be up and running immediately.
The RTC-158 and RTC-250 feature a rugged, lightweight design and multi-hole inserts that cover most commonly used sensor sizes. A unique design allows the units to calibrate threaded sensors and sensors with connection heads. The 160 mm deep well has a diameter of 63.5 mm, which is twice the size of any other dry-block calibrator. Either calibrator can be used both as a dry-block or liquid calibration bath with magnetic stirrer.
The Ametek Jofra RTC-158 and RTC-250 (models A, B and C) ship complete with the following:
Mains power cable
Traceable calibration certificate (temperature performance)
Tool for insertion tubes
JOFRACAL software
AMETRIM software
USB cable
Set of rubber cones for insulation plugs
Manuals
Model B contains the following extra items:
Test cables (2 x red, 2 x black)
Traceable certificate (input performance for reference sensor and DLC sensor)
Traceable certificate (input performance for sensor-under-test inputs)
Model C contains the following extra items:
Traceable certificate (input performance for reference sensor and DLC sensor)
Ametek Jofra RTC-158 and RTC-250 Temperature Calibrators Specifications:
Parameter
RTC-158
RTC-250
Temperature Range
@ 0°C ambient
-37 to 155°C
5 to 250°C
@ 23°C ambient
-22 to 155°C
28 to 250°C
@ 40°C ambient
-9 to 155°C
45 to 250°C
Accuracy
With external ref. sensor (models B&C)
±0.04°C
±0.07°C
With internal ref. sensor
±0.18°C
±0.28°C
Stability
±0.01°C
±0.02°C
Radial Homogeneity
Block
to 0.03°C
to 0.05°C
Bath
to 0.15°C
to 0.15°C
Resolution
All temperatures
1°, 0.1°, 0.01°, or 0.001°
Heating Time
-22 to 23°C
9 minutes
23 to 100°C
23 minutes
100 to 155°C
23 minutes
28 to 100°C
3 minutes
50 to 100°C
2 minutes
100 to 250°C
9 minutes
Cooling Time
155 to 100°C
9 minutes
100 to 23°C
24 minutes
23 to 0°C
15 minutes
0 to -15°C
21 minutes
250 to 100°C
24 minutes
100 to 50°C
24 minutes
100 to 28°C
65 minutes
Time to Stability
15 minutes
Immersion Depth
With insulation plug
180 mm
Bath version
150 mm
Input Specifications
RTD reference input
See data sheet for complete specifications
DLC sensor input
See data sheet for complete specifications
RTD sensor under test
See data sheet for complete specifications
Thermocouple input
See data sheet for complete specifications
Transmitter Supply
Output voltage
24 VDC ±10%
Output current
Maximum 28 mA
Transmitter Input mA (B Model)
Range
0 to 24 mA
Accuracy (12 months)
±(0.005% rdg + 0.010 F.S.)
Voltage Input VDC (B Model)
Range
0 to 12 VDC
Accuracy (12 months)
±(0.005% rdg + 0.010 F.S.)
Switch Input (B Model)
Test voltage
Maximum 5 VDC
Test current
Maximum 2.5 mA
Communications Interface
Serial data
USB 2.0 device port
Serial data
USB 2.0 host double port (for future expansion)
LAN
Ethernet MAC 10/100 Base-T (for future expansion)
SD
SD slot (for future expansion)
Inserts
Outer diameter
63.5 mm
Length
160 mm
