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“A complete documenting calibrator”
The 741B does the work of several tools – sourcing, simulating and measuring pressure, temperature, and electrical signals in one rugged, hand-held device. For documentation, the 741B automates calibration procedures and captures your data.
And, of course, it helps you meet rigorous standards like ISO 9000, FDA, EPA and OSHA regulations.
The 741B is the choice for plants that use standard company worksheets and that make reports in the shop. It has storage capacity for a day's calibration and measurement data. When you're back at the shop recall the data on screen to fill out calibration forms.
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The 741B is easy to use with flexible test strategies. And like all Fluke tools, it's rugged, reliable and tough as nails. It's like having several powerful tools in one - so you can work faster than ever:
- Measure volts, mA, RTDs, thermocouples, frequency, and ohms to test sensors, transmitters and other instruments
- Source/simulate volts, mA, thermocouples , RTDs, frequency, ohms, and pressure to calibrate transmitters
- Power transmitters during test using loop supply with simultaneous mA measurement
- Measure/source pressure using any of 29 Fluke 700Pxx Pressure Modules
- Measure and source simultaneously with one compact, rugged, reliable tool
- Create and run automated as-found/as-left procedures to satisfy quality programs or regulations. Record and document results
- Use many features like autostep, custom units, user entered values during test, one-point and two-point switch testing, square root DP flow testing, programmable measurement delay etc.
- Easy to use
- Three year warranty
- Bright white display. Read both sourced and measured parameters.
- Multi lingual interface
- Handling of fast pulsed RTD transmitters and PLCs, with pulses as short as 1msec.
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| Measurement Accuracy |
| Voltage DC |
| 110.000 mV |
0.025%+0.015% * |
| 1.10000 V |
0.025%+0.005% * |
| 11.0000 V |
0.025%+0.005% * |
| 110.000 V |
0.05%+0.005% * |
| 300.00 V |
0.05%+0.005% * |
| | Voltage AC |
| 20 to 40 Hz |
2% + 10 |
| 40 to 500 Hz |
0.5% + 5 |
| 500 to 1 kHz |
2% + 10 |
| 1 kHz to 5 kHz |
10% + 20 |
| Ranges: |
1.1000, 11.000, 110.00, 300V |
| | Current DC |
| 30.000 mA |
0.01% + 0.015% * |
| 110.00 mA |
0.01% + 0.015% * |
| | Resistance |
| 11.000 Ω |
0.05% + 50 mΩ |
| 110.00 Ω |
0.05% + 50 mΩ |
| 1.1000 kΩ |
0.05% + 500 mΩ |
| 11.000 kΩ |
0.1% + 10 Ω |
| | Frequency |
| 1.00 to 109.99 Hz |
0.05 Hz |
| 110.0 to 1099.9 Hz |
0.5 Hz |
| 1.100 to 10.999 kHz |
5 Hz |
| 11.00 to 50.00 kHz |
50 Hz |
| | Pressure |
| Accuracy |
from 0.025% of range using any of 29 pressure modules. |
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(for detailed specifications refer to pressure modules in options and accessories) |
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Modules available for differential, gage, vacuum, absolute, dual and high pressure. |
| | Note |
| * |
(% of reading + % of full scale) |
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| Source Accuracy |
| Voltage DC |
| 110.000 mV |
0.01%+0.005% * |
| 1.10000 V |
0.01%+0.005% * |
| 15.0000 V |
0.01%+0.005% * |
| | Current DC |
| 22.000 mA (Source) |
0.01%+ 0.015% * |
| 22.000 mA (Simulate) |
0.02% + 0.03% * |
| | Resistance |
| 11.000 Ω |
0.01% + 20 mΩ |
| 110.00 Ω |
0.01% + 40 mΩ |
| 1.1000 kΩ |
0.02% + 500 mΩ |
| 11.000 kΩ |
0.03% + 5Ω |
| | Frequency |
| 0.00 to 10.99 Hz |
0.01 Hz |
| 11.00 to 109.99 Hz |
0.1 Hz |
| 110.0 to 1099.9 Hz |
0.1 Hz |
| 1100 to 21999 Hz |
2 Hz |
| 22.000 to 50.000 kHz |
5 Hz |
| | Note |
| * |
(% of reading + % of full scale) |
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| RTDs and Thermocouples |
| Measure Accuracy: |
| 10 Ω Cu (427):
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2 °C |
| 100 Ω Pt (3916): |
0.3 °C |
| 100 Ω Pt (3926): |
0.3 °C |
| 100 Ω Pt (385): |
0.3 °C |
| 200 Ω Pt (385): |
0.3 °C |
| 500 Ω Pt (385): |
0.3 °C |
| 1000 Ω Pt (385): |
0.3 °C |
| 120 Ω Ni (672): |
0.3 °C |
| note: |
For 2-and 3-wire measurement, add 0.4 °C |
| E: |
0.3 °C |
| N: |
0.5 °C |
| J: |
0.3 °C |
| L: |
0.3 °C |
| K: |
0.3 °C |
| T: |
0.3 °C |
| U: |
0.3 °C |
| B: |
0.9 °C |
| R: |
1.0 °C |
| S: |
0.9 °C |
| C: |
0.6 °C |
| note: |
Accuracy with external cold junction, for internal junction add 0.2°C |
| | Source Accuracy: |
| 10 Ω Cu (427): |
1 °C |
| 100 Ω Pt (3916): |
0.1 °C |
| 100 Ω Pt (3926): |
0.1 °C |
| 100 Ω Pt (385): |
0.1 °C |
| 200 Ω Pt (385): |
0.1 °C |
| 500 Ω Pt (385): |
0.1 °C |
| 1000 Ω Pt (385): |
0.1 °C |
| 120 Ω Ni (672): |
0.1 °C |
| note: |
For 2-and 3-wire simulation, add 0.4 °C |
| E: |
0.2 °C |
| N: |
0.3 °C |
| J: |
0.2 °C |
| L: |
0.2 °C |
| K: |
0.3 °C |
| T: |
0.3 °C |
| U: |
0.3 °C |
| B: |
0.8 °C |
| R: |
0.9 °C |
| S: |
0.9 °C |
| C: |
0.6 °C |
| note: |
Accuracy with external cold junction, for internal junction add 0.2 °C |
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| Specifications |
| Ramp Functions |
| Source functions: |
Voltage, current, resistance, frequency, temperature |
| Rate: |
4 steps/second |
| Trip detect: |
Continuity or voltage (continuity detection not available when sourcing current) |
| | Loop Power Function |
| Voltage: |
Selectable, 24 V or 28 V |
| Accuracy: |
5% |
| Maximum current: |
22 mA, short circuit protected |
| Maximum input voltage: |
30 V DC |
| | Step Functions |
| Source Functions |
Voltage, current, resistance, frequency, temperature |
| Manual Step |
Selectable step, change with arrow buttons |
| Autostep |
Fully programmable for function, start delay, stepvalue, time per step, repeat |
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| Environmental Specifications |
| Operating Temperature |
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-10 °C to +50 °C |
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-20 °C to +50 °C * |
| | Storage Temperature | | | Dust/water resistance | | | Operating Altitude | | | Note |
| * |
Except frequency and AC |
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| Safety Specifications |
| Agency Approvals |
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CAN/CSA C22.2 No 1010.1-92, ASNI/ISA S82.01-1994, UL3111, and EN610-1:1993 |
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| Mechanical & General Specifications |
| Size | | | Weight | | | Batteries | | | Battery Life | | | Battery Replacement |
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Via snap-shut door without opening calibrator; no tools required |
| | Side port connections |
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Pressure module connector |
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Connection for optional battery eliminator
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| | Data storage capacity |
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1 day of calibration results |
| | 90 day specifications |
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The standard specification intervals for the 741B is 1 and 2 years. |
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Typical 90 day measurement and source accuracy can be estimated by |
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dividing the one year "% of reading" or "%of output" specifications by 2. |
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Floor specifications, expressed as "% of full scale" or |
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"counts" or "ohms" remain constant. |
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| Model Name | Description | Price List | | Fluke 741B |
Documenting Process Calibrator
- BC7217 battery charger
- BP7217 battery pack
- Instruction manual
- NIST-traceable calibration report and data
- One set of TP220 test probes
- Two sets of AC220 test clips
- Two sets of TL224 industrial test leads
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| Clips | | AC220 | AC220 SureGrip™ Alligator Clip Set | | AC280 | AC280 SureGrip™ Hook Clips | | AC283 | AC283 SureGrip™ Pincer Clips | | AC285 | AC285 SureGrip™ Alligator Clip Set |
| Test Probes | | TP920 | TP920 Test Probe Adapter Kit |
| Differential Pressure Modules | | 700P00 | 700P00 Differential Pressure Module (2.5 mbar) | | 700P01 | 700P01 Differential Pressure Module | | 700P02 | 700P02 Differential Pressure Module (70 mbar) | | 700P03 | 700P03 Differential Pressure Module (340 mbar) | | 700P04 | 700P04 Differential Pressure Module (1000 mbar) |
| Differential Pressure Module Wet | | 700P22 | 700P22 Differential Pressure Module Wet (70 mbar) | | 700P23 | 700P23 Differential Pressure Module Wet (340 mbar) | | 700P24 | 700P24 Differential Pressure Module Wet |
| Absolute Pressure Modules | | 700PA3 | 700PA3 Absolute Pressure Module (340 mbar) | | 700PA4 | 700PA4 Absolute Pressure Module | | 700PA5 | 700PA5 Absolute Pressure Module (2 bar) | | 700PA6 | 700PA6 Absolute Pressure Module (7 bar) | | 700PRV-1 | 700PRV Pressure Relief Valve Kit |
| Batteries, Chargers & Adapters | | BC7217 | BC7217 Battery Charger | | BP7235 | BP7235 NiMH Battery Pack |
| Cases and Holsters | | C125 | C125 Soft Meter Case | | C550 | C550 Tool Bag | | C700 | C700 Hard Case (700 Series) | | C75 | C75 Accessory Case | | C781 | C781 Meter Case | | C789 | C789 Soft Meter Case |
| Connectors | | 700BCA | 700BCA Bar Code Adapter | | 700BCW | 700BCW Bar Code Wand |
| Current clamps | | i200 | i200 AC Current Clamp | | i200s | i200s AC Current Clamp |
| Dual Pressure Modules | | 700PD2 | 700PD2 Dual Pressure Module (± 70 mbar) | | 700PD3 | 700PD3 Dual Pressure Module (± 340 mbar) | | 700PD4 | 700PD4 Dual Pressure Module (±1000 mbar) | | 700PD5 | 700PD5 Dual Pressure Module (-1000/+2000 mbar) | | 700PD6 | 700PD6 Dual Pressure Module (-1000 mbar/+6.9 bar) | | 700PD7 | 700PD7 Dual Pressure Module ( -1000 mbar/+13.8 bar) |
| Software | | 750SW | Fluke 750 SW DPC/TRACK2 Software |
| Vacuum Pressure Modules | | 700PV3 | 700PV3 Vacuum Pressure Module (-340 mbar) | | 700PV4 | 700PV4 Vacuum Pressure Module( -1000 mbar) |
| Temperature | | 700TC2 | 700TC2 Thermocouple Plug Kits (5 types) | | 80CJ-M | 80CJ-M Male Mini Connectors (Type J) | | 80CK-M | 80CK-M Male Mini Connectors (Type K) | | 80PJ-EXT | 80PJ-EXT Extension Wire Kit (Type J) | | 80PK-1 | 80PK-1 Bead Probe (Type K) | | 80PK-22 | 80PK-22 Immersion Probe | | 80PK-24 | 80PK-24 Air Probe | | 80PK-25 | 80PK-25 Piercing Probe | | 80PK-26 | 80PK-26 General Purpose Probe | | 80PK-27 | 80PK-27 Industrial Surface Probe | | 80PK-8 | 80PK-8 Pipe Clamp Temperature Probe (Type K) | | 80PK-9 | 80PK-9 General Purpose Probe (Type K) | | 80PK-EXT | 80PK-EXT Extension Wire Kit (Type K) | | 80PT-25 | 80PT-25 SureGrip Piercing Temperature Probe |
| Test Leads | | TL940 | TL940 Mini-Hook Test Lead Set | | TL950 | TL950 Mini-Pincer Test Lead Set |
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