Fluke 721 Pressure Calibration Instruments
Fluke 721 Precision Pressure Calibrator provides pressure calibration and temperature measurement for custody transfer applications
The Fluke 721 Precision Pressure Calibrator is the ideal tool for gas custody transfer applications. It features dual isolated pressure sensors to allow you to take simultaneous static and differential pressure measurements with a single tool. And it can be configured by selecting either a 16 psi (1.1 bar) or 36 psi (2.48 bar) low pressure sensor then adding any of seven high pressure ranges: 100, 300, 500, 1000, 1500, 3000 or 5000 psi (6.9, 20, 24.5, 69, 103.4, 200, 345 bar).
Other useful features:
- Measures up to 30 V DC, checks 24 V loop power supplies
- Extends pressure measurement range with connection to external 750P
- 750 series pressure modules (50 ranges)
- Provides a large backlit graphic display that can show up to three inputs simultaneously
- Stores five instrument setups for recall
Key features
- Precision pressure calibrator with dual isolated sensors for gas flow calibration (custody transfer) applications
- Features two isolated, stainless steel, pressure sensors with 0.025% accuracy
- Includes Pt100 RTD input for temperature measurement (probe optional)
- Measures 4 to 20 mA signals
- Provides internal 24 V loop power supply to power a transmitter under test
| Specifications 1-Year | |||
| Fluke-721-1601 | Range | Resolution | Accuracy |
| Low pressure sensor | |||
| -14 psi to +16 psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| -12 psi to +100 psi, -0.83 bar to 6.9 bar | 0.01 psi, 0.0001 bar | 0.025% of full scale | |
| Fluke-721-1603 | Low pressure sensor | ||
| -14 psi to +16 psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| -12 psi to +300 psi, -0.83 bar to 20 bar | 0.01 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-1605 | Low pressure sensor | ||
| -14 psi to +16 psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| -12 psi to +500 psi, -0.83 bar to 34.5 bar | 0.01 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-1610 | Low pressure sensor | ||
| -14 psi to +16psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +1000 psi, 0.00 bar to 69 bar | 0.1 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-1615 | Range | Resolution | Accuracy |
| Low pressure sensor | |||
| -14 psi to +16 psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +1500 psi, 0.00 bar to 103.4 bar | 0.1 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-1630 | Low pressure sensor | ||
| -14 psi to +16 psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +3000 psi, 0.00 bar to 200 bar | 0.1 psi, 0.01 bar | 0.025% of full scale | |
| Fluke-721-1650 | Low pressure sensor | ||
| -14 psi to +16 psi, -0.97 bar to 1.1 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +5000 psi, 0.00 bar to 345 bar | 0.1 psi, 0.01 bar | 0.035% of full scale | |
| Fluke-721-3601 | Range | Resolution | Accuracy |
| Low pressure sensor | |||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| -12 to +100 psi, -0.83 bar to 6.9 bar | .01 psi, 0.0001 bar | 0.025% of full scale | |
| Fluke-721-3603 | Low pressure sensor | ||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| -12 psi to +300 psi, -0.83 bar to 20 bar | 0.01 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-3605 | Low pressure sensor | ||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| -12 psi to +500 psi, -0.83 bar to 34.5 bar | 0.01 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-3610 | Range | Resolution | Accuracy |
| Low pressure sensor | |||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +1000 psi, 0.00 bar to 69 bar | 0.1 psi, 0.001 bar | 0.025% of full scale | |
| Fluke-721-3615 | Low pressure sensor | ||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +1500 psi, 0.00 bar to 103.4 bar | 0.1 psi, 0.01 bar | 0.025% of full scale | |
| Fluke-721-3630 | Low pressure sensor | ||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +3000 psi, 0.00 bar to 200 bar | 0.1 psi, 0.01 bar | 0.025% of full scale | |
| Fluke-721-3650 | Low pressure sensor | ||
| -14 psi to +36 psi, -0.97 bar to 2.48 bar | 0.001 psi, 0.0001 bar | 0.025% of full scale | |
| High pressure sensor | |||
| 0 psi to +5000 psi, 0.00 bar to 345 bar | 0.1 psi, 0.01 bar | 0.035% of full scale | |
| General Specifications | |||
| Instrument setup recall | Last used on power-up | ||
| Environmental | Operating temperature -10¡C to +50¡C Storage temperature (without batteries) -20¡C to +60¡C | ||
| Altitude | 2,000 m | ||
| Ingress protection | IP-40 | ||
| Power requirements | 6.0 V DC | ||
| Battery life | >35 hours, typical usage | ||
| Batteries required | (4) Standard AA cells | ||
| Dimensions (H x W x D) | 7.9 x 4.3 x 2.3 in (20 x 11 x 5.8 cm) | ||
| Weight | 03539 kg (1 lb 3 oz) | ||
| Connectors/ports pressure | Two, 1/8 in NPT, 700P Series Pressure Module; RTD Probe | ||
| Electrical and Temperature Measurement 1-Year | |||
| Function | Range | Resolution | Accuracy |
| mA measure | 0 to 24 mA | 0.001 mA | ±0.015% of rdg ±0.002mA |
| V DC measure | 0 to 30 V DC | 0.001 V | ±0.015% of rdg ±0.002 V |
| Temperature measure (RTD/ Ohms)1 | -40¡C to 150¡C (-40¡F to 302¡F) | 0.01¡C, 0.01¡F | ±0.015% of rdg ±0.02 ohms ±0.1¡C (±0.2¡F) ±0.25¡C (±0.45¡F) combined uncertainty when using 720 RTD probe accessory |
| Loop power supply | 24 V | N/A | 24 mA @ 24 V |
| 1. Temperature measurement requires optional Fluke-720RTD Pt-100 RTD probe available as an accessory | |||
| Temperature Effect | |||
| No effect on accuracy on all functions from 15¡C to 35¡C | |||
| Add ±0.002% F.S./¡C for temps outside of 15¡C to 35¡C | |||
| Available Pressure Engineering Units | |||
| psi, bar, mbar, kPa, kgcm2, cmH2O @ 4¡C, cmH2O @ 20¡C, mH2O @ 4¡C, mH2O @ 20¡C, inH2O @ 4¡C, inH2O @ 20¡C, inH2O @ 60¡F, mmHg @ 0¡C, inHg @ 0¡C, ftH2O @ 4¡C, ftH2O @ 20¡C, ftH2O @ 60¡F | |||
