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The ASM series (Advanced Signal Multi-scanner) offer a great time-saving automatic solution to calibrate multiple temperature sensors at the same time. The ASM series is an eight channel scanner controlled by JOFRACAL software on a PC. Up to 3 ASM units can be stacked to calibrate up to 24 sensors at the same time. It can handle signals from 2-, 3- and 4 wire RTD’s, TC’s, transmitters, thermisters, temperature switches and voltage.
The ASM800 series is designed for use in all companies where temperature measurement is critical and/or there is a need to make traceable documents for the calibration. Easy, flexible and time-saving! The ASM signal multi-scanner may be combined with any of your existing JOFRA dry-block or liquid bath calibrators. You can also use your JOFRA DTI reference thermometer or even the JOFRA ASC300 signal calibrator, which adds further value to your existing JOFRA equipment.
Models
The ASM multi-scanner is made in an A and a B model. The ASM B model is the complete solution with integrated scan-ner and high accuracy multi signal measuring circuits. The ASM A model is less expensive and is designed to add 8 channel scanning capabilities to an existing instrument. The A model therefore needs the measuring capabilities from a JOFRA dry-block ATC B model, JOFRA ASC300 signal calibrator, DTI-1000 reference thermometer or an ASM B model.
FUNCTIONAL SPECIFICATIONS
Power supply
Power supply..................................External AC/DC adapter
Input................................................... 90 – 254V, 45 – 65Hz
Output.............................30V ±2% regulated DC, max. 30W
Scanning rate
Scanning rate........................ Max. 5 channels per seconds
PHYSICAL SPECIFICATIONS
Instrument dimensions
L x W x H...................250 x 249 x 69 mm (9.8 x 9.8 x 2.7 in)
Instrument weight
Net weight..................................................... 2.3 kg (5.07 lb)
Shipping (including carrying case)
Weight...........................................................6.3 kg (13.9 lb)
Size: L x W x H.....350 x 560 x 180 mm (13.8 x 22.1 x 7.1 in)
Shipping (without carrying case)
Weight.............................................................4.4 kg (9.7 lb)
Size: L x W x H.....350 x 560 x 180 mm (13.8 x 22.1 x 7.1 in)
Miscellaneous
Serial data interface...................................................RS232
Specification temperature............... 20 to 26°C (68 to 79°F)
Operating (ambient) temperature....0 to 40°C (32 to 104°F)
Storage (ambient) temperature.... -20 to 50oC (-4 to 122oF)
Humidity............................................. 0 to 90% RH @ 30°C
CE Conformity........................................................EN61326
INPUT SPEC’S (A MODELS ONLY)
All input specifications apply to the instrument connected
Transmitter supply
Output voltage................................................. 24VDC +10%
Output current........................................... Maximum 28 mA
Accuracy automatic cold junction compensation
ASM-801/802...±0.20°C (±0.36°F) @ ambient temperature
....................................................... 20 to 26°C (68 to 79°F)
ASM-803..........±0.50°C (±0.90°F) @ ambient temperature
........................................................ 20 to 26°C (68 to 79°F)
Temperature drift outside 20 to 26°C..0.05°C/°C 0.05°F/°F)
Input specifications
A-models when used with other equipment *
RTD 4-wire.................................. 2.5 ppm rdg. (0-400 ohm)
............................................... 15 ppm rdg. (400-4000 ohm)
RTD 3-wire...............2.5 ppm rdg. + 50 mohm (0-400 ohm)
............................ 15 ppm rdg. + 50 mohm (400-4000 ohm)
mA...................................................... 1 ppm rdg. (0-24 mA)
MV, V...............................................................................2uV
* Accuracies from the connected instruments has to be added
INPUT SPEC’S (B MODELS ONLY)
Transmitter supply
Output voltage................................................. 24VDC +10%
Output current........................................... Maximum 28 mA
Transmitter input mA
Range...................................................................0 to 24 mA
Accuracy (12 months)..................±0.01% Rdg. +0.01% F.S.
Voltage input VDC
Range................................................................ 0 to 12 VDC
Accuracy (12 months)............... ±0.005% Rdg. +0.01% F.S.
Switch input
Switch dry contacts
Test voltage............................................ Maximum 2.5 VDC
Test current...............................................Maximum 0.8 mA
RTD input specifications
Signal type...................... 2-, 3-, 4-wire true ohm RTD input
Signal range...........................0-400 Ω (PT10/PT50/PT100)
Accuracy (12 months).............±0.002% Rdg. +0.002% F.S.
Signal range.................. 0-4000 Ω (PT200/PT500/PT1000)
Accuracy (12 months).............±0.002% Rdg. +0.005% F.S.
For 3-wire input add 50 mΩ assuming all three RTD leads are
matched. For 2-wire add 100 mΩ.
Thermocouple specifications
Signal range................................................ -10mV – 78 mV
Accuracy....................... ±(0.005% of rdg. + 0.005% of F.S.)
Accuracy automatic cold junction compensation
ASM-801/802...±0.20°C (±0.36°F) @ ambient temperature
....................................................... 20 to 26°C (68 to 79°F)
ASM-803..........±0.50°C (±0.90°F) @ ambient temperature
........................................................ 20 to 26°C (68 to 79°F)
Temperature drift outside 20 to 26°C .................. 0.05°C/°C
(0.05°F/°F)
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The ASM800 will fit into a lot of process industries and especially pharmaceutical, oil & gas and power plants. Original equipment manufacturers (OEM) will also benefit from calibrating and documenting multiple temperature sensors before final installation.