Gilian 5000

Gilian 5000 – 5LPM Personal Air Sampling Pumps For High Backpressure Applications

Gilian 3500 and Gilian 5000 Heavy Duty Air Sampling Pumps

The Gilian® 5000 is the industry leader in back-pressure performance, reliability and ease-of-use. The pumps offer flow rates up to 5000 cc/min. And thanks to several advanced features, the pump overcome the main causes of sampling errors – saving you time and money. The air flow display holds calibration for 30 days, even with atmospheric changes. The back-pressure capabilities of the Gilian 5000 are the highest in the industry for any personal sampling pump.

Gilian 3500

  • Up to 3.5 LPM
  • Live flow display
  • NiMH battery
  • The 3500 has been discontinued

Gilian 5000

  • Up to 5 LPM
  • Highest back-pressure capability
  • Programmable
  • Live flow display
  • NiMH battery
  • EN1232 – Type P compliant
Download datasheets: Gilian 35000 Datasheet | Gilian 5000 Datasheet

Discover the Gilian 5000 Air Sampling Pump


With the 3500 & 5000 there is less risk of lost samples due to battery failure. Both models incorporate a nickel-metal hydride (NiMH) battery which, unlike a NiCd battery, doesn’t suffer from “memory” problems. So there’s no hidden loss of battery capacity, no shorter-than-expected run time and no need for special battery maintenance. You use our standard charger and get the same, highly predictable life, charge after charge.

When the display indicates a “full” battery, that’s exactly what the pump delivers. Plus, the indicator more accurately displays remaining life throughout the sampling period. You get faster charging too. The NiMH battery charges in under four hours. And you won’t be hampered with special storage or disposal requirements, since the NiMH battery is friendly to the environment.


Gilian 3500 and 5000 Low Flow AdapterThe Gilian 3500 & 5000 provide automatic constant flow from 700 cc/min to 3500 cc/min and 800 cc/min to 5000 cc/min. When used with a low flow module, they also handle low flows from 20 to 750 cc/min and 20 to 800 cc/min under constant pressure control, such as required for multi-flow sorbent sampling. These pumps offer significantly higher back-pressure capabilities than competitive pumps thanks to a more advanced pneumatic design and a more powerful power source. As a result, dense ­particulate buildup on the filter, such as with dusty environments is far less likely to trigger premature pump shutdown and an incomplete sample. See the chart on the following page for back-pressure information.


Both the 3500 & 5000 have an intuitive automatic restart feature that will attempt to save a sample should a fault occur. If the filter becomes clogged or tubing pinches not allowing air to pass, the pump will shut down and attempt to restart every 3 minutes for up to 30 minutes. This option is selectable on the 5000.


Easy to use four-button designThese pumps are easy to understand and configure, just four keys control everything. There are no codes to enter or difficult key sequences to remember. Operation is simple, intuitive and less prone to error. So you’re up and running in less time. To secure your settings from tampering, both the 3500 & 5000 have a lockable keypad after setup and calibration.


Air flow settings and calibration of the flow rate display are done through the keypad, requiring the use of only an air flow calibrator. This means you can set up your pump and begin sampling quickly. The pumps also perform an automatic self calibration of internal temperature and pressure measurement when initially placed in the run mode and whenever the ambient temperature changes by more than 3°C during sampling.


Monitoring the pump for proper operation is easy. A large digital display continuously cycles to show flow rate, sample run time and total volume sampled. You receive immediate, real-time feedback, including live flow, not just the flow setting which quickly alerts you to any sudden changes in flow rate.The wearer can stop the pump, such as for a break and the display remains active. After 75 minutes, the pump automatically turns off the display if there’s no activity but retains all sample data.

Gilian 3500 (Discontinued)
Gilian 5000
Flow Rate, Max 3.5 Liters Per Minute 5 Liters Per Minute
Flow Rate, with Low Flow Module 20 cc/min – 750 cc/min 20 cc/min – 800 cc/min
Flow Rate, Standard 700 cc/min – 3500 cc/min 800 cc/min – 5000 cc/min
Flow Compensation 1000 cc/min 30″ H20 back-pressure (7.5 kPa) 70″ H20 back-pressure (17.4 kPa)
2000 cc/min 30″ H20 back-pressure (7.5 kPa) 60″ H20 back-pressure (15.0 kPa)
3000 cc/min 20″ H20 back-pressure (5.0 kPa) 50″ H20 back-pressure (12.4 kPa)
4000 cc/min 30″ H20 back-pressure (7.5 kPa)
5000 cc/min 20″ H20 back-pressure (5.0 kPa)
Constant Flow Control Better than ± 3% of set flow(after calibration) between 1-3 LPM;
± 5% above 3 LPM and below 1LPM
± 5% of set flow at 800-5000 cc/min
Programmable No Yes, four stage
30-Day Calibration Yes Yes
EN 1232 Compliant No Yes
Live Flow Display Yes Yes
Charging Time Under 5 Hours Under 4 Hours
Memory-Free Battery Yes, NiMH Yes, NiMH
Four-Button User Interface Yes, with lock-out feature Yes, with lock-out feature
Run Time 8 hour minimum 8 hour minimum
Flow Fault ±5% set flow, fault icon appears; if fault exceeds 30 seconds pump shuts down. Pump will attempt restart every 3 minutes for up to 30 minutes. ±5% set flow, fault icon appears; if fault exceeds 30 seconds pump shuts down. Pump will attempt restart every 3 minutes for up to 30 minutes.
LCD Display Yes; Flow Rate, Total Sample Time, Total Volume Sampled, Charge Status. Yes; Flow Rate, Total Sample Time, Total Volume Sampled, Charge Status , Program Settings.
Hazardous Approval Ratings UL: Class I, Division I, Goups A, B, C & D;
Class II, Groups E, F & GClass III, Temp Code T3CcUL: Class I, Division I, Groups C &D
Class II, Groups E, F, GClass III, Temp Code T3CCE: Ex II 2 G, Eex ib IIB T4
FM: Class I, Division I, Groups A, B, C & D
Class II, Groups E, F & GClass III, T4CE: Ex II 1 G, Ex ia IIC T4

Gilian 5000 Part Numbers

Gilian 5000