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.
Specifications
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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