agilent U1240 series handheld digital multimeters helping you check and fix more installation and maintenance bugs data sheet the agilent U1240 series handheld digital multimeters enable you to check more with wider measurement ranges. they feature true rms readings on their 10,000-count displays. the adjustable backlighting allows you to complete your jobs even in subdued lighting conditions, or to simply prolong battery life. your maintenance tasks are greatly simplified due to the built-in switch counter, harmonic ratio, dual and differential temperature capabilities, with just a press of the button. the meters have a high safety rating with cat iii 1000 v and cat?iv?600 v protection and are certified to ce and csa standards. on top of that, the U1240 series comes with a certificate of calibration and test report C at no extra cost. the latest multimeters in this series, the u1241b and u1242b, now come in vivid orange cases, offering the capabilities and functions you need. key features check more, fix more ? 10,000-count display ? 0.09% basic dcv accuracy ? true rms ac measurement ? basic functions acv, dcv, aci, dci, resistance, frequency, diode, continuity tests ? advanced functions capacitance, temperature, minmax recording ease of use ? adjustable backlighting two intensity levels ? manual data logging (u1242b only) ? built-in switch counter, harmonic ratio (u1242b only), dual/differential temperature capabilities (u1242b only) built to last ? overmold body casing ? cat iii 1000 v and cat iv 600 v safety protection ? certified to ce and csa standards ? operating temperature: C10 to 55 c diode test switch counter dcv/acv: 0.1 mv to 1000 v harmonic ratio (u1242b only) backlight: two intensity levels resistance: 0.1 to 100 m aca: 0.1 a to 10 ma capacitance: 0.1 nf to 10 mf ambient temperature acma: 0.01 to 1000 ma aca: 0.01 to 10 a frequency: 1 hz to 200 khz minmax recording t1Ct2 differential temperature (u1242b only) temperature: C40 to 1000 c manual data logging (u1242b only) functions and ranges at a glance
2 electrical specifications dc specifications function range resolution test current/ burden voltage accuracy (% of reading + counts of least significant digit) u1241b u1242b voltage 1 1000.0 mv 0.1 mv C 0.09% + 5 10.000 v 0.001 v C 0.09% + 2 100.00 v 0.01 v C 1000.0 v 0.1 v C 0.15% + 5 current 1000.0 a 0.1 a < 0.06 v (50 ) 0.1% + 3 10000 a 1 a < 0.55 v (50 ) 0.1% + 3 100.00 ma 0.01 ma < 0.18 v (0.5 ) 0.2% + 3 440.0 ma 2 0.1 ma < 0.8 v (0.5 ) 0.5% + 3 10.000 a 3 0.001 a < 0.4 v (0.01 ) 0.6% + 5 resistance 4 1000.0 5 0.1 0.5 ma 0.3% + 3 10.000 k 5 0.001 k 50 a 100.00 k 0.01 k 4.91 a 1000.0 k 0.1 k 447 na 10.000 m 0.001 m 112 na 0.8% + 3 100.00 m 6 0.01 m 112 na 1.5% + 3 diode test 7 1 v 0.001 v approximately 0.5 ma 0.3% + 2 1. input impedance: 10 m (nominal). 2. current can be measured up to 440 ma continuously. an additional 0.2% needs to be added to the specified accuracy if the sig nal measured is in the range of 440 ma to 1100 ma for 30 seconds maximum. after measuring a current of > 440 ma, leave the meter to cool down for twic e the measur- ing time used before applying a low current measurement. 3. current can be measured up to 10 a continuously with a maximum operating temperature of 50 c. an additional 0.3% needs to b e added to the specified accuracy if the signal measured is in the range of 10 a to 19.999 a for 15 seconds maximum. after measuring a current of > 10 a, leave the meter to cool down for 60 seconds before applying a low current measurement. 4. the maximum open voltage is < 2.8 v. for instant continuity, the built-in buzzer sounds when resistance is < 10.0 . 5. the accuracy of 1 k and 10 k is specified after null function, which is used to substrate the test lead resistance and the thermal effect. 6. for the range of 100 m, the r.h. is specified for < 60%. the temperature coefficient will be 0.15 times of specified accura cy as > 50 m. 7. overload protection: 1000 v rms for circuits < 0.3 a short circuit current. the built-in buzzer sounds when reading is appro ximately below 50 mv and audible single tone for normal forward biased diode or semiconductor junction as 0.3 v reading 0.8 v.
3 ac specifications function range resolution test current/ burden voltage accuracy (% of reading + counts of least significant digit) 40 to 500 hz 500 hz to 1 khz 1 to 2 khz ac voltage 8, 12 true rms 1000.0 mv 0.1 mv C 1% + 5 2% + 5 C 10.000 v 0.001 v C 1% + 5 2% + 5 100.00 v 0.01 v C 1000.0 v 0.1 v C C ac current 9, 12 true rms 1000.0 a 0.1 a < 0.06 v (50 ) 1% + 5 1.5% + 5 C 10000 a 1 a < 0.55 v (50 ) 100.00 ma 0.01 ma < 0.18 v (0.5 ) 440.0 ma 10 0.1 ma < 0.8 v (0.5 ) 10.000 a 11 0.001 a < 0.4 v (0.01 ) 8. input impedance: 10 m (nominal) in parallel with < 100 pf, with overload protection of 1000 v rms 9. crest factor 3. for non-sinusoidal waveforms with crest factor up to 3, add 2% reading + 2% full scale typical. 10. current can be measured from 50 ma to 440 ma continuously. an additional 0.2% needs to be added to the specified accuracy i f the signal measured is in the range of 440 ma to 1100 ma for 30 seconds maximum. after measuring a current of > 440 ma, leave the meter to cool down for twice the measuring time used before application of low current measurement. 11. current can be measured from 0.5 a up to 10 a continuously with a maximum operating temperature of 50 c. an additional 0.3 % needs to be added to the specified accuracy if the signal measured is in the range of 10 a to 19.999 a for 15 seconds maximum. after measuring a current of >10 a, leave the meter to cool down for 60 seconds before applying a low current measurement. 12. ac voltage and ac current specifications are ac coupled. true rms measurement is valid from 5 % of range to 100 % of range. temperature specifications thermocouple type range resolution accuracy (% of reading + offset error) k (for u1241b and u1242b) C40 to 1000 oc/C48 to 1832 of 0.1 c /0.1 f 1% + 1 oc/1% + 1.8 f j (for u1242b only) C40 to 1000 oc/C48 to 1832 of 0.1 oc/0.1 of 1% + 1 oc/1% + 1.8 f capacitance specifications range resolution accuracy (% of reading + counts of least significant digit) 1000.0 nf 0.1 nf 1.2% + 4 10.000 f 0.001 f 100.00 f 0.01 f 1000.0 f 0.1 f 2% + 4 10.000 mf 0.001 mf harmonic ratio specifications range frequency voltage 0.0% to 99.9% 40 to 500 hz 100 mvac to 1000 vac electrical specifications
4 electrical specifications switch counter definition switch condition 1, 2 circuit switch display 3 switch threshold low level normally close lo < 370 ohms intermittent 4 close to open number of switch count low to high transition high level normally open hi > 430 ohms intermittent 5 open to close number of switch count high to low transition 1. detects intermittent opens or closes lasting for at least 250 sec. 2. test current of 0.5 ma with maximum open circuit voltage of 2.8 v is used. 3. maximum count reading: 199.99 m (display ol when achieving 2 x 10 8 and thereafter). 4. count only low to high transition for initial switch condition of low. 5. count only high to low transition for initial switch condition of high. frequency specifications range resolution accuracy minimum input frequency 100.00 hz 0.01 hz 0.03%+3 1 hz 1000.0 hz 0.1 hz 10.000 khz 0.001 khz 100.00 khz 0.01 khz 1000.0 khz 1 0.1 khz 1. effective frequency measurement of up to 200 khz; refer to frequency sensitivity table below for details. frequency sensitivity during voltage measurement input range (maximum input for specified accuracy = 10 x range or 1000 v) minimum sensitivity (rms sine wave) 20 hz to 50 khz 50 to 200 khz 1000.0 mv 0.3 v 0.6 v 10.000 v 0.5 v 1.8 v 100.00 v 5 v 10 v (< 100 khz) 1000.0 v 50 v 100 v (< 100 khz) frequency sensitivity during current measurement input range minimum sensitivity (rms sine wave) 20 hz to 20 khz 1000.0 a 100 a 10000 a 500 a 100.00 ma 10 ma 440.00 ma 50 ma 10.000 a 1 a
5 electrical specifications measuring rate function times/second acv 7 dcv (v or mv) 7 14 diode 14 capacitance 4 (< 100 f) dca (a, ma, a) 7 aca (a, ma, a) 7 temperature 7 (single) frequency 1 (> 10 hz) general specifications display dual display (secondary display is intended for temperature function display only) consists of 4-digit liquid crystal display (lcd) with maximum reading of 11,000 counts. automatic polarity indication. power consumption 0.22 va maximum battery type and life four single standard 1.5 v aaa batteries (alkaline or zinc chloride type); 300 hours typical operating environment ? full accuracy at C10 to 55 c; and to 80% rh for temperatures up to 30 c, decreasing linearly to 50% rh at 55 c ? 0 C 2000 meters per iec 61010-1 2nd edition cat iii, 1000 v / cat iv, 600 v iec 61010-1 2 nd edition storage compliance C20 to 70 c safety compliance ? iec 61010-1:2001 / en61010-1:2001 ? canada: csa c22.2 no. 61010-1:2004 measurement category cat iii 1000 v / cat iv 600 v overvoltage protection, pollution degree 2 emc compliance ? cispr 11:1990/en55011:1990 ? canada: ices-001:2004 ? australia/new zealand: as/nzs cispr11:2004 common mode rejection ratio (cmrr) > 90 db at dc, 50/60 hz 0.1% (1 k unbalanced) normal mode rejection ration (nmrr) > 60 db at 50/60 hz 0.1% crest factor < 3.0 temperature coefficient 0.1 (specified accuracy) / c (from C10 to 18 c or 28 to 55 c) shock and vibration tested to iec/en 60068-2 dimensions (h x w x d) 193.8 mm x 92.2 mm x 58.0 mm weight ? 450 g with batteries ? 400 g without batteries warranty ? three years for main unit ? three months for standard shipped accessories
6 ordering information standard shipped accessories ? four 1.5 v aaa alkaline batteries ? certificate of calibration (coc) ? test probe leads (4-mm tips) ? quick start guide ? free test data (option uk6) optional accessories measuring accessories (non-temperature) u1161a extended test lead kit includes two test leads (red and black), two test probes, medium- sized alligator clips and 4-mm banana plugs. ? test leads: cat iii 1000 v, cat iv 600 v, 15 a ? test probes: cat lll 1000 v, cat lv 600 v, 15 a ? medium-sized alligator clips: cat iii 1000 v, cat iv 600 v, 15 a ? 4-mm banana plugs: cat ii 600 v, 10 a u1162a alligator clips ? one pair of insulated alligator clips (red and black). recommended for use with agilent standard test leads. ? rated cat iii 1000 v, cat iv 600 v, 15 a u1163a smt grabbers ? one pair of smt grabbers (red and black). recommended for use with agilent standard test leads. ? rated cat ii 300 v, 3 a u1164a fine-tip test probes ? one pair of fine-tip test probes (red and black). recommended for use with agilent standard test leads. ? rated cat ii 300 v, 3 a u1168a standard test lead kit includes two test leads (red and black), 19-mm and 4-mm test probes, alligator clips, fine-tip test probes, smt grabbers and mini grabber (black). ? test leads: cat iii 1000 v, cat iv 600 v, 15 a ? test probes (19-mm tip): cat ii 1000 v, 15 a ? test probes (4-mm tip): cat iii 1000 v, cat iv 600 v, 15 a (highly recommended for cat iv environment) ? alligator clips: cat iii 1000 v, cat iv 600 v, 15 a ? fine-tip test probes: cat ii 300 v, 3 a ? smt grabber: cat ii 300 v, 3 a ? mini grabber: cat ii 300 v, 3 a u1169a test probe leads includes two test leads (red and black), and a pair each of 19-mm and 4-mm test probes. ? test leads: cat iii 1000 v, cat iv 600 v, 15 a ? test probes (19-mm tip): cat ii 1000 v, 15 a ? test probes (4-mm tip): cat iii 1000 v, cat iv 600 v, 15 a (highly recommended for cat iv environment) u1583b ac current clamp ? dual range: 40 a and 400 a ? rated cat iii 600 v ? bnc-to-banana-plug adapter provided for use with dmms u1241b u1242b
7 optional accessories measuring accessories (temperature) u1180a thermocouple adapter+lead kit, j and k types includes thermocouple adapter, thermocouple bead j-type and thermocouple bead k-type. ? t/c adapter j/k-type ? t/c bead j-type: C20 c to 200 c ? t/c bead k-type: C20 c to 200 c u1181a immersion temperature probe ? type-k t/c for use in oil and other liquids ? measurement range: C50 c to 700 oc ? includes adapter u1184a for connection to dmm u1182a industrial surface temperature probe ? type-k t/c for use on still surfaces ? measurement range: C50 oc to 400 oc ? includes adapter u1184a for connection to dmm u1183a air temperature probe ? type-k t/c for use in air and non-caustic gas ? measurement range: C50 oc to 800 oc ? includes adapter u1184a for connection to dmm u1184a temperature probe adapter ? mini-connector-to-banana-plug adapter for use with dmm u1185a j-type thermocouple and adapter ? t/c adapter j/k-type ? t/c bead j-type: C20 c to 200 c u1186a k-type thermocouple and adapter ? t/c adapter j/k-type ? t/c bead j-type: C20 c to 200 c carrying case u1172a transit case (aluminium-clad) the robust casing to transport your dmm and accessories ? aluminum-clad, black panel construction ? dimension: 18 inches (h) x 13 inches (w) x 6 inches (d) ? weight: 4 kg u1174a soft carrying case the convenient way to carry your dmm and essential accessories ? dimension: 9 inches (h) x 5 inches (w) x 3 inches (d) hanging kit u1171a magnetic hanging kit for fastening the dmm to a steel surface so both hands are free u1179a ir connectivity bracke connect with u1177a ir-to-bluetooth adapter or u1173a ir-usb cable ordering information
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