Ametek Jofra ASC-400 Reference Manual Download Page 62

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128797 05

2017-08-11

Current – mA and loop

Description

Value

Range mA:

0 to 24 mA

Loop power for transmitter:

Yes, 24 VDC / ±10%

Isolated input:

Yes

Current mA

Range

Accuracy ±

Min

Max

12 months

Read (Isolated)

0.000 mA

24.000 mA

0.010% rdg +2µA

Read (non-isolated)

0.000 mA

24.000 mA

0.010% rdg +2µA

Source

0.000 mA

24.000 mA

0.010% rdg +2µA

Hart resistor 250 ohm (On/Off in software). Maximum loop resistance source @ 24 mA (Hart on/ Hart off) 650 ohm
/ 900 ohm.
mA source voltage input range (external power/HART resistor off) 1V

‐

30V.

Summary of Contents for Jofra ASC-400

Page 1: ...Reference manual Advanced Signal Calibrator Jofra ASC 400...

Page 3: ...s may be ordered from the list of accessories Safety symbols This manual contains a number of safety symbols designed to draw your attention to instructions which must be followed when using the instr...

Page 4: ...ute Pressure Modules APM S H and Mk II 26 5 5 2 Using the BARO Module optional 26 6 0 Using Source modes Lower Display 28 6 1 Sourcing mA internal loop power supply 28 6 2 mA Sink external loop power...

Page 5: ...T I Transmitter 52 8 8 Using Percent Error when testing or calibrating a T I Transmitter 53 9 0 Maintenance 54 9 1 Returning the calibrator to service 54 9 2 Replacing batteries 56 9 3 Storing 57 9 4...

Page 6: ...A dual colour display The upper display is used for the measurement of volts current pressure error scaling and switch test The lower display can be used to measure and source volts millivolts current...

Page 7: ...haser fails to follow any and all instructions warnings or cautions in the instrument s User Manual If a manufacturing defect is found AMETEK will replace or repair the instrument or replace any defec...

Page 8: ...128797 05 2017 08 11 7 1 3 Dimensioning drawing 55 mm 96 mm 220 mm...

Page 9: ...losed and latched before you operate the calibrator Remove test leads from the calibrator before you open the battery door Inspect the test leads for damaged insulation or exposed metal Check test lea...

Page 10: ...revent damage to the pressure transducer inside To avoid damaging the pressure module from overpressure never apply pressure above the rated maximum printed on the module To avoid damaging the plastic...

Page 11: ...age and supplying Measure RTD 4w 3 4w Input terminals for performing RTD measurements with 3 wire or 4 wire setups Pressure module connector APM Connects calibrator to a pressure module for pressure m...

Page 12: ...reading Back key Cancel a selection edit or return to previous menu Action key Enter key Action function Open and close edit fields or a menu button The action key also accepts the selected option or...

Page 13: ...rimary parameter Primary Parameters Determine what parameter is going to be measured or sourced The available options for the upper display are CURRENT VOLTAGE THERMO COUPLE RTD OHMS FREQUENCY PULSE P...

Page 14: ...e and APM before switching on the instrument or before applying DC power 4 1 Basic operation Setup 1 Select mode for upper and lower display RED markers 2 Select the related options and functions for...

Page 15: ...oose from 4 Start by selecting upper or lower display 5 Use the ARROW keys to move between the parameter fields and make more changes 6 Press to accept the selections and leave the edit mode 7 Use the...

Page 16: ...ngs 3 Use the ARROW keys to move between the setting fields 4 Press to open a setting field for editing 5 Use the numeric keys to enter the desired value and press to accept the value When entering th...

Page 17: ...utes after the last keystroke To reduce or increase this time or to disable this feature do as follows 1 In the System Settings setup enter the Auto Off setting field and press to access the Auto Off...

Page 18: ...8797 05 2017 08 11 17 F4 4 4 System Information The System Information can be accessed at any stage of operation 1 Press to display the Horizontal menu bar 2 Press Info to access the System Informatio...

Page 19: ...follow the principle of navigating through the functions described in the guidelines in section 4 2 and proceed as follows 1 Select Voltage from the Lower Mode list 2 Select the desired Range from th...

Page 20: ...he guidelines in section 4 2 and proceed as follows 1 Enter edit mode 2 Select Frequency from the Lower Mode list 3 Select the desired Test Mode In from the Test Mode list 4 Enter the desired trigger...

Page 21: ...4 2 to make the desired mA measurements 1 Enter edit mode 2 Select Current from the Lower Mode list 3 Select the desired Test Mode In from the Test Mode list 4 Select the desired Range from the Range...

Page 22: ...e calculation Note CJ Off Mode should only be used when calibration is being done using an external ice bath CJ Manual mode should be used when the cold junction temperature is known but different fro...

Page 23: ...sation is turned off Note The TC wire used must match the thermocouple type being calibrated 5 4 2 Using Resistance Temperature Detectors RTDs The supported types of RTDs are shown in Section 11 Speci...

Page 24: ...128797 05 2017 08 11 23 7 Attach RTD leads as shown in Figure 5 Figure 5 Measuring RTD temperature 2 3 or 4 wire connections RTD RTD RTD 4 wire 2 wire 3 wire...

Page 25: ...be measured using this function 1 Select Resistance from the Lower Mode list 2 Proceed as in the above guidelines This option can be used to measure ohms or a type resistive temperature sensor which i...

Page 26: ...idelines in section 4 2 and proceed as follows 1 Connect the pressure module to the ASC 400 calibrator as shown below in Figure 6 Note The APM might take a while to start up The module is a complete p...

Page 27: ...Barometric zero offset in non volatile memory The zero offset is stored for one absolute pressure module at a time If a new absolute module is connected this process must be repeated 5 5 2 Using the B...

Page 28: ...128797 05 2017 08 11 27 2 If the BARO option is mounted the pressure type field becomes active and pressure type can be selected...

Page 29: ...nternal loop power supply To source a current follow the principle of navigating through the functions described in the guidelines in section 4 2 and proceed as follows 1 Select Current from the Lower...

Page 30: ...ug installed mA loops Follow the principle of navigating through the functions described in the guidelines in section 4 2 and proceed as follows 1 Select Current from the Lower Mode list 2 Select Ext...

Page 31: ...tion 4 2 and proceed as follows 1 Select Voltage from the Lower Mode list 2 Select 0 to 20 V from the Range list 3 Select Out from the Test Mode list 4 Connect leads to the voltage source terminals as...

Page 32: ...rcing a Pulse Train The ASC 400 calibrator can generate a pulse train with a selectable number of pulses at a desired frequency and output level For example setting the frequency to 10Hz and the numbe...

Page 33: ...t the thermocouple leads to the appropriate polarized TC mini plug and insert the plug into the TC terminals on the calibrator as shown in Figure 10 2 Select Voltage from the Lower Mode list 3 Select...

Page 34: ...ct Thermocouple from the Lower Mode list 3 Select the desired thermocouple type from the TC Type list 4 Select the desired CJ mode from the CJ Mode list If CJ Manual is selected enter CJ temperature 5...

Page 35: ...ect the desired temperature unit from the Units list only when selecting RTD from the Lower Mode list 4 Select Out from the Test Mode list 5 Connect the calibrator to the instrument being tested as sh...

Page 36: ...ype list The option is found at the bottom of the list 2 Press System to access the System Settings 3 Enter the desired values in the Custom RTD setting fields using either the ARROW keys or the numer...

Page 37: ...ow 0 100 3 9848 x 10 3 5 87 x 10 7 4 x 10 12 PT3926 Above 0 100 3 9848 x 10 3 5 87 x 10 7 PT3916 Below 0 100 3 9692 x 10 3 5 8495 x 10 7 4 2325 x 10 12 PT3916 Above 0 100 3 9692 x 10 3 5 8495 x 10 7 6...

Page 38: ...selections have been made 7 Press Step to access the MANUAL Step menu or 8 Press Auto to start auto stepping using the selected step time 9 Pres either Step or Step to Step up or downwards 10 In AUTO...

Page 39: ...key Ramp for quick menu free access 5 Select the desired 0 and 100 values The ASC 400 will ramp from the 0 set source value to the 100 set source value in the selected time 5 to 999 seconds 6 Exit the...

Page 40: ...ay To make the desired measurements follow the principle of navigating through the functions described in the guidelines in section 4 2 and proceed as follows 1 Select Current from the Upper Mode list...

Page 41: ...with the current measuring circuit To use this option follow the principle of navigating through the functions described in the guidelines in section 4 2 and proceed as follows 1 Select Current from...

Page 42: ...ure line Caution To avoid damaging the pressure module from overpressure never apply pressure above the rated maximum printed on the module To avoid damaging the pressure module from corrosion use it...

Page 43: ...128797 05 2017 08 11 42 5 Zero the pressure module see section 5 5 1 for using the zeroing function Figure 15 Measuring on a Pressure Transmitter PTX APM pressure module Pressure transmitter...

Page 44: ...r calibrating a temperature switch measuring the temperature with an external RTD sensor using an external temperature source To perform a switch test follow the principle of navigating through the fu...

Page 45: ...e temperature slowly until the switch closes 6 The upper display will now show the temperature when the switch closed the temperature that the switch opened at the dead band between the temperatures r...

Page 46: ...in a convenient and easy to use format An example is given below for a pressure switch test To perform a switch test follow the principle of navigating through the functions described in the guideline...

Page 47: ...Dead band 6 Apply pressure with the pump slowly until the switch opens Note In the switch test mode the display update rate is increased to help capture changing pressure inputs Even with this enhance...

Page 48: ...calibrator as shown in Figure 18 8 4 Calibrating an I P Device To calibrate a device that controls pressure follow the principle of navigating through the functions described in the guidelines in sect...

Page 49: ...128797 05 2017 08 11 48 Figure 19 Calibrating an I P Device APM pressure module Pressure Device...

Page 50: ...D from the Lower Mode list 2 Select Out from the Test Mode list input output control 3 Select RTD from the RTD Type list 4 Select the upper display and select Current from the Upper Mode list 5 Select...

Page 51: ...n section 4 2 and proceed as follows 1 Select the lower display and select Pressure from the Lower Mode list 2 Select the upper display and select Current from the Upper Mode list 3 Select 4 to 20mA f...

Page 52: ...128797 05 2017 08 11 51 Figure 21 Calibrating a Pressure Transmitter Hand pump APM pressure module...

Page 53: ...ollows 1 Select the lower display and select RTD from the Lower Mode list 2 Select Out step from the Test Mode list input output control 3 Select RTD from the RTD Type list 4 Set the 0 the 100 span po...

Page 54: ...lect the lower display and select RTD from the Lower Mode list 2 Select Out step from the Test Mode list input output control 3 Select RTD from the RTD Type list 4 Set the 0 the 100 span points and th...

Page 55: ...ng operated as described in this manual and return it to the manufacturer for repair service If the calibrator needs repair and is under warranty see the warranty statement section 1 1 for terms If th...

Page 56: ...left _____________________________________________________________________________________________________ Diagnosis data cause for return Diagnosis fault description _________________________________...

Page 57: ...batteries are installed factory setting The ASC 400 calibrator uses six AA batteries 1 Unscrew the captive screw to gain access to the battery compartment 2 Replace the batteries taking care to note...

Page 58: ...stored in the soft bag delivered with the instrument 9 4 Cleaning Caution Before cleaning the calibrator you must switch it off Periodically wipe the case of the calibrator with a damp soft cloth A m...

Page 59: ...heck that the ASC 400 is set up correctly Switch the ASC 400 off and on again If the error still occurs return the ASC 400 to the manufacturer for service No contact with the ASC 400 Check the power s...

Page 60: ...AA NiMh rechargeable Battery lifetime Alkaline backlight low Battery lifetime Alkaline backlight high 12 mA loop power 30 hours 13 hours Battery charge current Use only NiMH cells with capacity large...

Page 61: ...rdg 1000 0 10000 0 06 rdg KHz source 1 000 10 000 0 06 rdg Pulse source only Rate 1 Hz to 10KHz 1 99999 Input voltage amplitude range on frequency is 1 to 20 V Trigger level 0 2 to 10 volt Minimum pu...

Page 62: ...Range Accuracy Min Max 12 months Read Isolated 0 000 mA 24 000 mA 0 010 rdg 2 A Read non isolated 0 000 mA 24 000 mA 0 010 rdg 2 A Source 0 000 mA 24 000 mA 0 010 rdg 2 A Hart resistor 250 ohm On Off...

Page 63: ...148 0 46 0 83 100 0 148 32 0 26 0 47 0 400 32 752 0 20 0 36 400 1000 752 1832 0 30 0 54 J 0 1 0 01 210 150 346 238 0 59 1 07 150 0 238 32 0 34 0 62 0 660 32 1220 0 26 0 47 660 1200 1220 2192 0 36 0 6...

Page 64: ...2 752 0 22 0 40 U 0 1 0 01 200 0 328 32 0 54 0 98 0 600 32 1112 0 26 0 47 XK 0 1 0 01 200 100 328 148 0 43 0 78 100 0 148 32 0 23 0 42 0 400 32 752 0 18 0 33 400 800 752 1472 0 24 0 44 Does not includ...

Page 65: ...0 1562 0 72 1 3 Pt400 90 385 0 1 0 01 200 0 328 32 0 09 0 17 0 400 32 752 0 34 0 62 400 660 752 1220 0 41 0 74 660 850 1220 1562 0 47 0 85 Pt500 90 385 0 1 0 01 200 100 328 212 0 22 0 4 100 400 212 75...

Page 66: ...psi APM CPF Accuracy 0 0138 to 1 barA 0 0008 barA 1 38 to 100 kPaA 0 08 kPaA 0 2 to 14 5 psiA 0 011 psiA 1 to 4 barA 0 025 RDG 0 0003 barA 100 to 400 kPaA 0 025 RDG 14 5 to 44 5 psiA 0 025 RDG 0 003 p...

Page 67: ...on CISPR 11 Class B Immunity IEC 61000 4 2 ESD 4 kV contact 8 kV air IEC 61000 4 3 Electromagnetic field 3 V m 80 MHz to 1 GHz 3 V m 1 4 GHz to 2 GHz 1 V m 2 GHz to 2 7 GHz IEC 61000 4 3 Voltage dip 0...

Page 68: ...ternal Power Supply Charger 9VDC 200mA 230VAC 115VAC 124720 Thermocouple male plug type K Yellow 120517 Thermocouple male plug type N Orange 120514 Thermocouple male plug type T Blue 120515 Thermocoup...

Page 69: ...guarantees expert materials testing solutions Also covering Texture Analysers to perform rapid general food testing and detailed texture analysis on a diverse range of foods and cosmetics Davenport P...

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Ametek Jofra ASC-400, Reference Manual, Page: 62 / 69

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